Huawei Technologies AP4050DN-E Wireless LAN Access Point User Manual Hardware Installation and Maintenance Guide

Huawei Technologies Co.,Ltd Wireless LAN Access Point Hardware Installation and Maintenance Guide

Contents

Usermanual-V1

AP4050DN-EHardware Installation andMaintenance GuideIssue 05Date 2018-02-02HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respectiveholders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees orrepresentations of any kind, either express or implied.The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial BaseBantian, LonggangShenzhen 518129People's Republic of ChinaWebsite: http://e.huawei.comIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.i
About This DocumentOverviewThis document describes hardware features of the AP4050DN-E and provides basicinstallation methods.Intended AudienceThis document is intended for network engineers responsible for WLAN installation andmaintenance. You should have experience in network device installation and maintenance.Symbol ConventionsThe symbols that may be found in this document are defined as follows.Symbol DescriptionIndicates an imminently hazardous situationwhich, if not avoided, will result in death orserious injury.Indicates a potentially hazardous situationwhich, if not avoided, could result in deathor serious injury.Indicates a potentially hazardous situationwhich, if not avoided, may result in minoror moderate injury.Indicates a potentially hazardous situationwhich, if not avoided, could result inequipment damage, data loss, performancedeterioration, or unanticipated results.NOTICE is used to address practices notrelated to personal injury.AP4050DN-EHardware Installation and Maintenance Guide About This DocumentIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.ii
Symbol DescriptionNOTECalls attention to important information,best practices and tips.NOTE is used to address information notrelated to personal injury, equipmentdamage, and environment deterioration. Change HistoryChanges between document issues are cumulative. The latest document issue contains allchanges made in previous issues.Issue 05 (2018-02-02)This version has the following updates:The following information is modified:l2.6.1 Installing the Device on a Walll2.6.2 Installing the Device on a Ceilingl2.6.3 Installing the Device on a T-raill2.6.4 Removing an APIssue 04 (2017-08-31)This version has the following updates:The following information is modified:l1.1 Device Structurel2.3 Unpacking the EquipmentIssue 03 (2017-01-20)This version has the following updates:The following information is modified:l2.6.1 Installing the Device on a Walll2.6.2 Installing the Device on a Ceilingl2.6.3 Installing the Device on a T-railIssue 02 (2016-09-30)This version has the following updates:The following information is modified:2.7 Cable ConnectionAP4050DN-EHardware Installation and Maintenance Guide About This DocumentIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.iii
Issue 01 (2016-07-22)Initial commercial releaseAP4050DN-EHardware Installation and Maintenance Guide About This DocumentIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.iv
ContentsAbout This Document.....................................................................................................................ii1 Product Overview..........................................................................................................................11.1 Device Structure............................................................................................................................................................. 11.2 Indicator Description...................................................................................................................................................... 31.3 Basic Specifications........................................................................................................................................................41.4 Ordering Information......................................................................................................................................................52 AP Installation............................................................................................................................... 62.1 Preparing for Installation................................................................................................................................................ 62.2 Installation Flowchart..................................................................................................................................................... 82.3 Unpacking the Equipment.............................................................................................................................................. 82.4 Determining the Installation Position............................................................................................................................. 92.5 Installing an IoT Card...................................................................................................................................................102.6 Installing the AP........................................................................................................................................................... 142.6.1 Installing the Device on a Wall..................................................................................................................................142.6.2 Installing the Device on a Ceiling............................................................................................................................. 172.6.3 Installing the Device on a T-rail................................................................................................................................ 182.6.4 Removing an AP........................................................................................................................................................202.7 Cable Connection......................................................................................................................................................... 202.8 Connecting the Security Lock...................................................................................................................................... 232.9 Checking the Device After Installation........................................................................................................................ 232.10 Powering on the AP....................................................................................................................................................243 Logging In to the Device............................................................................................................ 253.1 Logging In to the Device Using STelnet/Telnet........................................................................................................... 253.2 Logging In to the Device Through the Web System.................................................................................................... 273.3 Logging In to the Device Through the Console Port....................................................................................................294 Hardware Failures....................................................................................................................... 324.1 A Device Fails to Be Powered On................................................................................................................................325 Appendix.......................................................................................................................................355.1 On-site Cable Assembly and Installation..................................................................................................................... 355.1.1 Cable Assembly Precautions..................................................................................................................................... 355.1.2 Assembling Power Cables......................................................................................................................................... 36AP4050DN-EHardware Installation and Maintenance Guide ContentsIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.v
5.1.2.1 Assembling a DC 2-Pin Round Connector (A)...................................................................................................... 365.1.2.2 Assembling a DC 2-Pin Round Connector (B)...................................................................................................... 415.1.2.3 Assembling the OT Terminal and Power Cable..................................................................................................... 475.1.2.4 Assembling the JG Terminal and Power Cable...................................................................................................... 515.1.2.5 Assembling the Cord End Terminal and the Power Cable..................................................................................... 535.1.3 Assembling Ethernet Cables......................................................................................................................................565.1.3.1 Assembling the Shielded RJ45 Connector and Ethernet Cable..............................................................................565.1.3.2 Assembling an Optimized Shielded RJ45 Connector and SFTP Network Cables.................................................625.1.3.3 Assembling an Integrated Shielded RJ45 Connector and SFTP Network Cables................................................. 665.1.3.4 Assembling a Shielded RJ45 Connector and an FTP Network Cable....................................................................705.1.3.5 Assembling an Unshielded RJ45 Connector and Ethernet Cable...........................................................................755.1.3.6 Checking the Appearance of Contact Strips...........................................................................................................775.1.3.7 Testing the Connection of Assembled Cables........................................................................................................ 805.1.3.8 Common Network Cable Faults and Preventive Measures.................................................................................... 835.1.4 Assembling Feeders...................................................................................................................................................845.1.4.1 Assembling the Straight Male Coaxial N Connector and the 1/2'' Feeder............................................................. 845.1.4.2 Assembling a Straight Male Coaxial N Connector and an RG8U Feeder..............................................................885.1.5 Installing Cable Accessories......................................................................................................................................945.1.5.1 Precautions for Installing Cable Accessories......................................................................................................... 945.1.5.2 Installing Power Adapters...................................................................................................................................... 955.1.5.2.1 Installing the OT Terminal...................................................................................................................................955.1.5.2.2 Installing the Cord End Terminal........................................................................................................................ 985.1.5.2.3 Installing a 2-Pin Round Connector and a DC Power Cable...............................................................................995.1.5.3 Installing Ethernet Adapters................................................................................................................................. 1025.1.5.3.1 Installing a Shielded Ethernet Connector.......................................................................................................... 1035.1.5.3.2 Installing an Unshielded Ethernet Connector....................................................................................................1045.1.5.4 Installing Fiber Connectors.................................................................................................................................. 1065.1.5.4.1 Cleaning Fiber Connectors................................................................................................................................ 1065.1.5.4.2 Installing an FC Fiber Connector...................................................................................................................... 1065.1.5.4.3 Installing an LC Fiber Connector...................................................................................................................... 1085.1.5.4.4 Installing the SC Fiber Connector..................................................................................................................... 1105.1.5.4.5 Installing an MPO Connector............................................................................................................................ 1115.1.6 Replacing the Mold of the Crimping Tool...............................................................................................................1135.2 Environmental Requirements for Device Operation.................................................................................................. 1165.2.1 Environmental Requirements for an Equipment Room...........................................................................................1165.2.1.1 Requirements for Selecting a Site for an Equipment Room.................................................................................1165.2.1.2 Equipment Room Layout......................................................................................................................................1175.2.1.3 Construction Requirements for the Equipment Room..........................................................................................1185.2.1.4 Equipment Room Environment............................................................................................................................ 1195.2.1.5 Requirements for Corrosive Gases....................................................................................................................... 1205.2.1.6 Requirements for ESD Prevention....................................................................................................................... 1215.2.1.7 Electromagnetism Requirements for the Equipment Room................................................................................. 121AP4050DN-EHardware Installation and Maintenance Guide ContentsIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.vi
5.2.1.8 Requirements for Lightning Proof Grounding..................................................................................................... 1215.2.2 Requirements for Power Supply..............................................................................................................................1235.2.2.1 Requirements for AC Power Supply.................................................................................................................... 1235.2.2.2 Recommendations for AC Power Supply.............................................................................................................1245.2.2.3 Requirements for DC Power Supply.................................................................................................................... 1255.2.2.4 Recommendations for DC Power Supply.............................................................................................................1255.3 Equipment Grounding Specifications.........................................................................................................................1265.3.1 General Grounding Specifications...........................................................................................................................1265.3.2 Grounding Specifications for an Equipment Room................................................................................................ 1265.3.3 Grounding Specifications for Devices.....................................................................................................................1265.3.4 Grounding Specifications for Communications Power Supply...............................................................................1275.3.5 Grounding Specifications for Signal Cables........................................................................................................... 1285.3.6 Specifications for Laying Out Grounding Cables................................................................................................... 1285.4 Engineering Labels for Cables................................................................................................................................... 1295.4.1 Introduction to Labels..............................................................................................................................................1295.4.1.1 Label Materials..................................................................................................................................................... 1295.4.1.2 Type and Structure................................................................................................................................................1305.4.1.3 Label Printing....................................................................................................................................................... 1315.4.1.4 Writing Labels...................................................................................................................................................... 1335.4.1.5 Attaching Labels...................................................................................................................................................1345.4.1.6 Contents of Engineering Labels........................................................................................................................... 1365.4.1.7 Precautions for Using Engineering Labels........................................................................................................... 1365.4.2 Engineering Labels for Optical Fibers.....................................................................................................................1375.4.2.1 Labels for the Optical Fibers Connecting Devices...............................................................................................1375.4.2.2 Labels for the Optical Fibers Connecting the Device and an ODF...................................................................... 1385.4.3 Engineering Labels for Network Cables................................................................................................................. 1395.4.4 Engineering Labels for User Cables........................................................................................................................1415.4.5 Engineering Labels for Power Cables..................................................................................................................... 1425.4.5.1 Engineering Labels for DC Power Cables............................................................................................................1425.4.5.2 Engineering Labels for AC Power Cables............................................................................................................1435.5 Guide to Using Optical Modules................................................................................................................................ 1445.6 Fault Tag..................................................................................................................................................................... 1485.7 Installation Checklist.................................................................................................................................................. 1495.8 Guide to Making Drip Loops......................................................................................................................................1565.9 Power Adaptation Solution.........................................................................................................................................158AP4050DN-EHardware Installation and Maintenance Guide ContentsIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.vii
1 Product OverviewAbout This ChapterThe AP4050DN-E has the following advantages:l2x2 MIMOlGood service support capabilitieslHigh reliabilitylHigh securitylSimple network deploymentlAutomatic AC discovery and configurationlReal-time management and maintenanceIn compliance with 802.11ac Wave 2, the AP4050DN-E can provide gigabit access forwireless users, greatly improving wireless user experience.The AP4050DN-E provides basic 802.11n/ac WLANs for scenarios that can integrateenhanced applications (such as Bluetooth and RFID), such as shopping malls, supermarkets,healthcare, warehouse, manufacturing, and logistics. It provides flexible distribution optionsin different environments.A cloud AP must be used together with a cloud server.1.1 Device Structure1.2 Indicator Description1.3 Basic Specifications1.4 Ordering Information1.1 Device StructureFigure 1-1 shows the appearance of the AP4050DN-E.AP4050DN-EHardware Installation and Maintenance Guide 1 Product OverviewIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.1
Figure 1-1 Appearance of the AP4050DN-E62317548Table 1-1 describes ports on the AP4050DN-E.Table 1-1 Interface descriptionNo. Name Description1 Default Reset button: restores factory settings and restarts thedevice if you hold down the button more than 3 seconds.2 USB port Connects to a USB flash drive to extend the storage spaceof the AP, and provides a maximum of 2.5 W power.3 Console Connects to a maintenance terminal for AP configurationand management.4 GE1/PoE_OUT10/100/1000M port: connects to the wired Ethernet andsupports PoE output.AP4050DN-EHardware Installation and Maintenance Guide 1 Product OverviewIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.2
No. Name Description5 GE0/PoE_IN 10/100/1000M port: connects to the wired Ethernet andsupports PoE input.6 DC 12V Connects a 12 V power adapter to the AP.7 Security slot Connects to a security lock.8 Radio port Connects an antenna to an IoT card through a radio cable. NOTElThe AP supports the following power supply modes: PoE power supply and DC power supply.lWhen the AP uses the DC power supply, use a power adapter for power supply; otherwise, the APmay be damaged.lFor power adapter models, see 5.9 Power Adaptation Solution.1.2 Indicator DescriptionThe AP4050DN-E provides only a single indicator, as shown in Figure 1-2.NOTEIndicator colors may vary slightly at different temperature.Figure 1-2 IndicatorIndicatorTable 1-2 Description about the single indicatorType Color Status DescriptionDefaultstatusafterpower-onGreen Steady on The AP is just powered on and the software is notstarted yet.AP4050DN-EHardware Installation and Maintenance Guide 1 Product OverviewIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.3
Type Color Status DescriptionSoftwarestartupstatusGreen Steady onafterblinkingonceAfter the system is reset and starts uploading thesoftware, the indicator blinks green once. Until thesoftware is uploaded and started, the indicatorremains steady green.RunningstatusGreen Blinkingonceevery 2s(0.5 Hz)lThe system is running properly, the Ethernetconnection is normal, and STAs are associatedwith the AP.lThe system enters the Uboot CLI.Blinkingonceevery 5s(0.2 Hz)The system is running properly, the Ethernetconnection is normal, and no STA is associatedwith the AP. The system is in low powerconsumption state.Alarm Green Blinkingonceevery0.25s (4Hz)lThe software is being upgraded.lAfter the software is loaded and started, the APrequests to go online if it works in Fit AP orcloud-based management mode. The indicatorremains in this state before the AP successfullygoes online.lThe AP works in Fit AP or cloud-basedmanagement mode and fails to go online.Fault Red Steady on A fault that affects services has occurred, such as aDRAM detection failure or system softwareloading failure. The fault cannot be automaticallyrectified and must be rectified manually. 1.3 Basic SpecificationsTable 1-3 provides basic specifications of the AP4050DN-E.Table 1-3 Basic specificationsItem DescriptionPhysicalspecificationsDimensions (H xW x D)53 mm x 220 mm x 220 mmWeight 0.84 kgSystem memory l256 MB DDR3Ll64 MB NOR FLASHPowerspecificationsPower input lDC: 12 V ± 10%lPoE power supply: in compliance with IEEE802.3atAP4050DN-EHardware Installation and Maintenance Guide 1 Product OverviewIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.4
Item DescriptionMaximum powerconsumption16.0 W (excluding the output power of the USB port,IoT card, or PoE_OUT port)NOTEThe actual maximum power consumption depends on locallaws and regulations.EnvironmentspecificationsOperatingtemperaturel-60 m to +1800 m: -10°C to +50°Cl1800 m to 5000 m: Temperature decreases by 1°Cevery time the altitude increases 300 m.Storagetemperature-40°C to +70°COperatinghumidity5% to 95% (non-condensing)IP rating IP41Atmosphericpressure53 kPa to 106 kPa 1.4 Ordering InformationTo place an order, contact technical support personnel.Part Number Description50082944 AP4050DN-E Mainframe(11ac wave2,Dual Band,Built-inAntenna,BT,USB,PSE,IoT Slot)50083055 AP4050DN-E Mainframe Bundle (AP4050DN-E Mainframe*8)AP4050DN-EHardware Installation and Maintenance Guide 1 Product OverviewIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.5
2 AP InstallationAbout This Chapter2.1 Preparing for Installation2.2 Installation Flowchart2.3 Unpacking the Equipment2.4 Determining the Installation Position2.5 Installing an IoT Card2.6 Installing the AP2.7 Cable Connection2.8 Connecting the Security Lock2.9 Checking the Device After Installation2.10 Powering on the AP2.1 Preparing for InstallationThis section describes safety precautions and tool preparations for AP installation.Safety PrecautionslTake proper measures to prevent injuries and device damage.lPlace the device in a dry and flat position away from any liquid and prevent the devicefrom slipping.lKeep the device clean.lDo not put the device and tools in the aisles.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.6
CAUTIONOnly the qualified personnel are permitted to install and remove the device and itsaccessories. Before installation and operation, read the safety precautions carefully.Tool PreparationTo install APs, prepare tools listed in Table 2-1.Table 2-1 ToolsPhillips screwdriver Protective gloves ESD glovesSlip-proof glove Marker Hammer drillClaw hammer Diagonal pliers Wire stripperRJ45 crimping tool Cable cutter Network cable testerMultimeter Ladder Safety helmetAP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.7
Safety belt Anti-skid shoes - 2.2 Installation FlowchartThe following figure shows the process for installing an AP.Figure 2-1 Installation flowchart2.3 Unpacking the EquipmentBefore unpacking the carton, ensure that the packing carton is intact and not damaged orsoaked. Stop unpacking if the equipment is rusted or soggy. Then, investigate causes andcontact the supplier.After unpacking, check items in the carton against the packing list. If any item is missing,contact the supplier or agent.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.8
Usually, the packing list contains the following items.lAP devicelSheet metal mounting bracketlAdjustable bucklelExpansion screwslQuick start guidelWarranty cardlMAC address labellSN labelNOTEIf a PoE adapter or a DC power adapter is required, you need to purchase it separately. For DC power adaptermodels, see 5.9 Power Adaptation Solution.2.4 Determining the Installation PositionIndoor APs are usually mounted on a wall or ceiling using sheet metal mounting brackets.The installation position is determined by the site survey. There must be at least 200 mmclearance between the cabling end of the AP and the wall. Figure 2-2 shows spacerequirements.Figure 2-2 Mounting an AP≥200 mm≥200 mm≥200 mm≥200 mmFloorCellingWallWhen determining the AP installation position, comply with the following rules:lTry to reduce the number of obstacles, such as walls, between the AP and user terminals.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.9
lPlace the AP far away from electronic devices that may produce radio interference, suchas microwave ovens, other APs, antennas, and other radio communication devices. Fordetails, see Table 2-2.lInstall the AP in a hidden position that does not affect daily lives and work of residents.lInstall the AP in a site that is free from leaking or dripping water, heavy dew, andhumidity, and take protective measures to prevent water from flowing into the equipmentalong the cable.lDo not install the AP in an environment with high temperature, dust, poisonous gases,flammable or explosive objects, electromagnetic interference (from a radar station, radiostation, or substation), unstable voltage, violent shakes, or strong noise.Table 2-2 General anti-interference requirementsScenario Deployment Distance RequirementIndoorinstallationlThere should be at least a 7 m distance between antennas.lThe antennas should be placed at least 5 m from the 4G antennas ofthe carrier.lThe antennas should be placed far away from electronic devices thatmay produce interference, such as microwave ovens. NOTEIf antennas are embedded into APs, the deployment distance requirements on the antennas are those on APs.2.5 Installing an IoT CardAn AP4050DN-E has three IoT slots supporting ANT and RFID cards. An ANT card has onlyone radio port while an RFID card has two radio ports. Depending on card characteristics, IoTcards can be installed in one-cable per card or two-cable per card mode. Users need to installIoT cards onsite as required.One-Cable per CardIn this mode, one to three ANT or RFID cards can be installed.1. Remove the front cover of an AP.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.10
2. Remove rubber plugs based on the number of IoT cards to be installed. One rubber plugmaps one IoT card.Rubber plugs3. Place IoT cards in the slots and tighten the cards using M2x7 screws (with a tighteningtorque of 1.5 N•m). You are advised to start installation from the card1 slot.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.11
1231. AP4050DN-E 2. IoT card 3. M2x7 screws 4. Install RF cables and sort cables following the instruction shown in the figure.NOTElThe diagonal size of a hexagon SMA connector must be less than or equal to 8 mm; otherwise, thecable cannot be installed.5. Slide the cover back.Two-Cable per CardIn this mode, only one RFID card can be installed. The card1 slot is preferentially used.1. Remove the front cover of an AP.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.12
2. Remove the two rubber plugs.Rubber plugs3. Place the card in the card1 slot and tighten the card using M2x7 screws (with atightening torque of 1.5 N•m).AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.13
1231. AP4050DN-E 2. IoT card 3. M2x7 screws 4. Install RF cables and sort cables following the instruction shown in the figure.NOTElThe diagonal size of a hexagon SMA connector must be less than or equal to 8 mm; otherwise, thecable cannot be installed.5. Slide the cover back.2.6 Installing the APNOTERemove the protective film on the surface before installation to prevent electrostatic discharge.2.6.1 Installing the Device on a WallAP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.14
NOTEA wall for installing the device needs to meet the following requirements:lThe wall can bear the weight of four times the total weight of the device and mounting bracketwithout damage.lWhen the tightening torx of a screw reaches 5 N•m, the screw still properly works, without crackor damage on the wall.Mounting kits and expansion bolts are required to install the AP on a wall. The procedures areas follows:When fixing the sheet metal mounting bracket, ensure that the arrows point upwards on the label.1. Fix a mounting bracket to the wall against the wall and mark the drilling positionsthrough holes of the bracket.59 mm85 mm2. Use a 6 mm drill bit to drill 25 mm to 30 mm deep holes in the drilling positions.Hammer the expansion tubes into the holes until the expansion tubes are completelyembedded into the wall.25 mm~30 mmØ63. Fix the mounting bracket to the wall and use the Phillips screwdriver to fasten threeexpansion screws into the expansion tubes.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.15
1.7 N•mST3.54. Connect the cables. For details, see 2.7 Cable Connection.5. Align the rubber feet of the device over the mounting slots on the mounting bracket andvertically push the AP to secure it. When the spring clip is popped up, push the APdownward until it snaps into place (you can hear a click).abAP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.16
NOTEIn a scenario with heavy vibrations, tighten the AP to the mounting bracket using M4x30 screws with atorque of 1.4N•m. This prevents the AP falling off from due to vibrations. In normal scenarios, you do notneed to install these screws.2.6.2 Installing the Device on a CeilingNOTEA ceiling needs to bear the weight of four times the total weight of the device and mounting bracketwithout damage.1. Remove a ceiling tile, determine locations of mounting holes based on the distancebetween two installation holes on the mounting bracket, use a hammer drill to drill holeson the ceiling tile, and fix the mounting bracket to the ceiling tile(with a tighteningtorque of 1.4 N•m).The screws provided for ceiling-mounting of APs are 30 mm long and can be used to fixan AP on a ceiling no thicker than 15 mm. To install APs on thicker ceilings, you need topurchase longer screws.47 mm1321. Ceiling tile 2. Adjustable buckle 3. M4x30 screwAP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.17
2. Connect the cables. For details, see 2.7 Cable Connection.3. Align the rubber feet of the device over the mounting slots on the mounting bracket andvertically push the AP to secure it. When the spring clip is popped up, push the APhorizontally until it snaps into place (you can hear a click).bcaNOTElEnsure that the AP is correctly installed on the mounting bracket and there is 200 mm space aboveand around the AP for maintenance.lIn a scenario with heavy vibrations, tighten the AP to the mounting bracket using M4x30 screwswith a torque of 1.4N•m. This prevents the AP falling off from due to vibrations. In normalscenarios, you do not need to install these screws.2.6.3 Installing the Device on a T-railA T-rail needs to bear the weight of four times the total weight of the device and mountingbracket without damage. Figure 2-3 shows the T-rail dimensions requirements (t: thickness;w: width).Figure 2-3 Section of a T-rail19 mm ≤ w ≤ 29 mm0.6 mm ≤ t ≤ 1.0 mmAP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.18
1. Remove two ceiling tiles around the T-rail, use screws to fix the adjustable buckle to themounting bracket, hook the adjustable buckle to the T-rail, and secure the screw on theadjustable buckle to fasten the mounting bracket and T-rail.23141. T-rail 2. M4x30 Screw 3. Adjustable buckle 4. Sheet metal mounting bracket2. Connect the cables. For details, see 2.7 Cable Connection.3. Align the rubber feet of the device over the mounting slots on the mounting bracket andvertically push the AP to secure it. When the spring clip is popped up, push the APhorizontally until it snaps into place (you can hear a click).bcaAP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.19
NOTElBefore fixing the adjustable buckle with a screw, adjust the buckle to a proper position based on theT-rail width.lEnsure that the AP is correctly installed on the mounting bracket and there is 200 mm space aboveand around the AP for maintenance.lIn a scenario with heavy vibrations, tighten the AP to the mounting bracket using M4x30 screwswith a torque of 1.4N•m. This prevents the AP falling off from due to vibrations. In normalscenarios, you do not need to install these screws.2.6.4 Removing an APFlip the spring clip on the mounting bracket and slip the AP towards the spring clip. Releasethe spring clip until the rubber feet of the AP enter the mounting keyholes. Remove the APfrom the mounting bracket.Figure 2-4 Removing an APabcNOTEIf a captive screw is installed, remove the screw and then follow the preceding steps to uninstall the AP.2.7 Cable ConnectionTable 2-3 describes the cable connections.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.20
Figure 2-5 Appearance of the AP4050DN-E31 24Table 2-3 Cable connectionsNo. Cable or Device Description1 USB flash drive Connects to a USB flash drive to extend the storage spaceof the AP, and provides a maximum of 2.5 W power.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.21
No. Cable or Device Description2 Network cable lThe service network cable and PoE input cable cannotbe connected to the console port. Otherwise, the APmay be damaged when using PoE power supply.lIf the AP needs to connect to the Ethernet, ensure thatthe Ethernet cable is working properly. If the Ethernetcable is not working properly, for example, RJ45connectors are short-circuited, the AP may fail to bepowered on or fail to work. Before connecting anEthernet cable to the AP, use the cable test tool tocheck whether the cable is qualified. If the cable isunqualified, replace it.NOTICElDo not insert a PoE input cable into the GE1/PoE_OUT port.lCAT5e cables or higher must be used.lThe length of a cable in the GE0/PoE_IN interface cannotexceed 100 m.lThe length of a cable cannot exceed 40 m when the GE1/PoE_OUT port has PoE output and cannot exceed 100 mwhen there is no PoE output.lThe GE1/PoE_OUT port of an AP can provide power outputonly works in 802.3at PoE mode. The output power varies atdifferent connection status:lThe maximum output power is 7 W when no IoT card isconnected to the AP and the USB port is not used.lThe maximum output power is 5.5 W when only one IoTcard is connected to the AP and the USB port is not used.lThe PoE_OUT function is automatically disabled whentwo or more IoT cards are connected to the AP or theUSB port is used.3DC power adapter When the AP uses the DC power supply, use a poweradapter for power supply; otherwise, the AP may bedamaged.4 RF cable Connects to an IoT card or an antenna. NOTEThe AP is powered by either the DC power supply or PoE power supply that backs up each other.When installing a cable, you must make a drip loop to prevent water from flowing intodevices along the cable. For the method of making the drip loop, see 5.8 Guide to MakingDrip Loops.Pay attention to the following points when bundling the cables:lDifferent types of cables must be separately routed with the minimum spacing of 30 mmand cannot be entangled or crossed. Cables should be parallel or separated usingdedicated separators.lBundled cables are closely arranged, straight, tidy, and undamaged.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.22
lCable ties are bound neatly facing the same direction, and those at the same horizontalline must be in a straight line. Cable tie tails should be cut smoothly and evenly.lLabels or nameplates must be attached to the cables after they are installed.2.8 Connecting the Security LockThere is a security slot on the device. You can lock the device to an immovable object toprevent theft. The detailed procedures are as follows:1. Fasten the cable of the security lock to an immovable object around.2. Insert the security lock into the security slot and lock it.Lock holeSecurity lockNOTEYou need to purchase the security lock separately.2.9 Checking the Device After InstallationTable 2-4 shows the items to be checked after installation is complete. For more details, seeInstallation Checklist in the appendix.Table 2-4 Installation checklistNo. Check Item1 The device is installed by strictly following the design draft. Theinstallation position meets space requirements, with maintenance spacereserved.2 The device is securely installed.3 The power cables are intact and not spliced.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.23
No. Check Item4 Terminals of the power cables are welded or cramped firmly.5 All power cables are not short-circuited or reversely connected and mustbe intact with no damage.6 The power cables and ground cables are separated from other cables andbundled separately.7 Connectors of signal cables are complete, intact, and tightly connected.The signal cables are not damaged or broken.8 Labels on cables are clear and correct. 2.10 Powering on the APAfter the AP is powered on, observe the indicator on the AP to check the system runningstatus. For details, see 1.2 Indicator Description.NOTEDo not frequently power on and off the device.AP4050DN-EHardware Installation and Maintenance Guide 2 AP InstallationIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.24
3 Logging In to the DeviceAbout This Chapter3.1 Logging In to the Device Using STelnet/Telnet3.2 Logging In to the Device Through the Web System3.3 Logging In to the Device Through the Console Port3.1 Logging In to the Device Using STelnet/TelnetYou can log in to the device using STelnet V2 or Telnet to configure, manage, and maintainthe device in the CLI.NOTElBy default, only the STelnet V2 service is enabled on the device.lTelnet has security vulnerabilities. You are not advised to enable the Telnet service.Device connections are classified into wired and wireless connections.lIn versions earlier than V200R007C20, APs support wired connections.lIn V200R007C20 and later, Fat APs support both wired and wireless connections, andFit APs and cloud APs support wired connections.Before logging in to the device, complete the following tasks:lPower on the device.lPrepare network cables used to connect device interfaces for wired connections. Nonetwork cable is required for wireless connections.The following table lists the default configuration of the device. You are advised to change thedefault user name and password on your first login.AP4050DN-EHardware Installation and Maintenance Guide 3 Logging In to the DeviceIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.25
Table 3-1 Default configuration of the deviceParameter Default SettingUser name adminPassword admin@huawei.comIP address lWired connection: 169.254.1.1lWireless connection: 192.168.1.1Subnet mask lWired connection: 255.255.0.0lWireless connection: 255.255.255.0SSID HUAWEI-XXXX, applicable to wirelessconnections of Fat APs (XXXX specifies thelast four bits of the AP's MAC address.)Wireless password None, applicable to wireless connections ofFat APs NOTEFor a Fit AP and cloud AP, you can perform the following operations:lIf the Fit AP is already online on the AC, you can remotely log in to the AC on a local terminal and runthe display ap all command to check the IP address of the device.lIf the Fit AP in any version is offline or the Fit AP in V200R007C10 or later does not go online, you canaccess the device through the offline management VAP for operations. By default, the SSID of the offlinemanagement VAP is hw_manage_xxxx (xxxx specifies the last four bits of the AP's MAC address) andthe password is hw_manage. After the IP address of the PC is set to 169.254.2.x/24 (169.254.2.1excluded and 169.254.2.100 recommended), the connection is set up, you can log in to the AP usingSTelnet for operations.lIf the cloud AP is offline or does not go online, you can access the device through the offline managementVAP for operations. By default, the SSID of the offline management VAP is hw_manage_xxxx (xxxxspecifies the last four bits of the AP's MAC address) and the password is hw_manage. After the PCdynamically obtains an IP address and connects to the AP, you can log in to the AP using STelnet foroperations.The following example uses the default parameters and is used for reference only.Wired Connection ModeStep 1 Use a network cable to connect a PC to any network port of the AP or that of the switch onthe same network segment as the AP.Step 2 Assign the PC with an IP address on the same network segment as the default IP address ofthe device so that the PC and device are reachable to each other.If the device uses the default settings, the IP address of the PC must be in the networksegment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended.Step 3 Start the CLI on the PC and access the IP address 169.254.1.1 of the device using STelnet V2.Step 4 Enter the user name and password as prompted to log in to the user interface.----EndAP4050DN-EHardware Installation and Maintenance Guide 3 Logging In to the DeviceIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.26
Wireless Connection ModeStep 1 By default, STAs search for the WLAN HUAWEI-XXXX within the wireless signal coverageof a Fat AP. STAs can access the WLAN without entering the password. If the SSID andpassword have been configured, use the specified SSID and password to set up a wirelessconnection.Step 2 Start the CLI on the STA and access the IP address 192.168.1.1 of the device using STelnetV2.Step 3 Enter the user name and password as prompted to log in to the user interface.----EndMethod of Obtaining Upgrade and Configuration DocumentationTo perform subsequent upgrades and configurations after login to the device, visit Huaweienterprise technical support website http://support.huawei.com/enterprise and search forproduct documentation by keyword. The search method is described as follows:lFit AP:–Upgrade: Search for Fit AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Configuration: Search for AC6605 product documentation, and refer to theconfiguration guide in the documentation of the correct version.lFat AP:–Upgrade: Search for Fat AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Configuration: Search for Fat AP product documentation, and refer to theconfiguration guide in the documentation of the correct version.lcloud AP:–Upgrade: Search for cloud AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Online configuration: Search for cloud AP product documentation, and refer tothe configuration guide in the documentation of the correct version.–Service configuration after APs go online: Search for CloudCampus solutionproduct documentation, and refer to the deployment guide in the documentationof the correct version.3.2 Logging In to the Device Through the Web SystemThe built-in web system allows you to use a browser to log in to the device. You canconfigure, manage, and maintain a Fat AP and cloud AP on the GUI. On the web page, youare prompted to configure and manage a Fit AP on the AC.Device connections are classified into wired and wireless connections.lIn versions earlier than V200R007C20, APs support wired connections.lIn V200R007C20 and later, Fat APs support both wired and wireless connections, andFit APs and cloud APs support wired connections.AP4050DN-EHardware Installation and Maintenance Guide 3 Logging In to the DeviceIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.27
Before logging in to the device, complete the following tasks:lPower on the device.lPrepare network cables used to connect device interfaces for wired connections. Nonetwork cable is required for wireless connections.The following table lists the default configuration of the device. You are advised to change thedefault user name and password on your first login.Table 3-2 Default configuration of the deviceParameter Default SettingUser name adminPassword admin@huawei.comIP address lWired connection: 169.254.1.1lWireless connection: 192.168.1.1Subnet mask lWired connection: 255.255.0.0lWireless connection: 255.255.255.0SSID HUAWEI-XXXX, applicable to wirelessconnections of Fat APs (XXXX specifies thelast four bits of the AP's MAC address.)Wireless password None, applicable to wireless connections ofFat APs NOTEFor a Fit AP and cloud AP, you can perform the following operations:lIf the Fit AP in any version is offline or the Fit AP in V200R007C10 or later does not go online, you canaccess the device through the offline management VAP for operations. By default, the SSID of the offlinemanagement VAP is hw_manage_xxxx (xxxx specifies the last four bits of the AP's MAC address) andthe password is hw_manage. After the IP address of the PC is set to 169.254.2.x/24 (169.254.2.1excluded and 169.254.2.100 recommended), the connection is set up, , and you can log in to the AP usingweb system for operations.lIf the cloud AP is offline or does not go online, you can access the device through the offline managementVAP for operations. By default, the SSID of the offline management VAP is hw_manage_xxxx (xxxxspecifies the last four bits of the AP's MAC address) and the password is hw_manage. After the PCdynamically obtains an IP address and connects to the AP, you can log in to the AP using web system foroperations.The following example uses the default parameters and is used for reference only.Wired Connection ModeStep 1 Use a network cable to connect a PC to any network port of the AP or that of the switch onthe same network segment as the AP.Step 2 Assign the PC with an IP address on the same network segment as the default IP address ofthe device so that the PC and device are reachable to each other.AP4050DN-EHardware Installation and Maintenance Guide 3 Logging In to the DeviceIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.28
If the device uses the default settings, the IP address of the PC must be in the networksegment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended.Step 3 Open the browser on the PC, enter http://IP address in the address box, and press Enter tolog in. Select a language for the web system, enter the default user name and password, andclick Login to enter the web system home page.----EndWireless Connection ModeStep 1 By default, STAs search for the WLAN HUAWEI-XXXX within the wireless signal coverageof a Fat AP. STAs can access the WLAN without entering the password. If the SSID andpassword have been configured, use the specified SSID and password to set up a wirelessconnection.Step 2 Open the browser on the STA, enter http://IP address in the address box, and press Enter tolog in. Select a language for the web system, enter the default user name and password, andclick Login. The web system home page is displayed.----EndMethod of Obtaining Upgrade and Configuration DocumentationTo perform subsequent upgrades and configurations after login to the device, visit Huaweienterprise technical support website http://support.huawei.com/enterprise and search forproduct documentation by keyword. The search method is described as follows:lFit AP:–Upgrade: Search for Fit AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Configuration: Search for AC6605 product documentation, and refer to theconfiguration guide in the documentation of the correct version.lFat AP:–Upgrade: Search for Fat AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Configuration: Search for Fat AP product documentation, and refer to theconfiguration guide in the documentation of the correct version.lcloud AP:–Upgrade: Search for cloud AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Online configuration: Search for cloud AP product documentation, and refer tothe configuration guide in the documentation of the correct version.–Service configuration after APs go online: Search for CloudCampus solutionproduct documentation, and refer to the deployment guide in the documentationof the correct version.3.3 Logging In to the Device Through the Console PortBefore logging in to the device, complete the following tasks:AP4050DN-EHardware Installation and Maintenance Guide 3 Logging In to the DeviceIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.29
lPower on the device.lPrepare a console cable.lPrepare terminal simulation software.NOTEIf your PC's operating system provides terminal simulation software (like HyperTerminal in Windows 2000/XP), you do not need to install additional terminal simulation software. If the PC runs on an operating systemwithout terminal simulation software (like Windows 7), install third-party terminal simulation software on thePC by referring to the user manual or online help.Step 1 Use a console cable to connect the PC to the console port of the device.Step 2 Start terminal emulation software on the PC, create a connection, and set communicationparameters as follows:lBaud rate (B): 9600lData bits (D): 8lParity (P): NonelStop bits (S): 1lFlow control (F): NoneStep 3 Press Enter and enter the authentication information as prompted to log in to the user view.(The following information is only for reference.)For a Fit AP, enter the default user name admin and password admin@huawei.com.You are advised to change the default user name and password on your first login.Login authenticationUsername: adminPassword:Info: You are advised to change the password to ensure security.For a Fat AP and Cloud AP, set a passowrd of console, and use the password to log in.Please configure the login password:Info: A plain text password is a string of 8 to 16 case-sensitive characters and must be a combination of at least two of the following: uppercase letters A to Z, lowercase letters a to z, digits, and special characters. A cipher text password contains 56 or 68 characters.Enter password:Confirm password:----EndMethod of Obtaining Upgrade and Configuration DocumentationTo perform subsequent upgrades and configurations after login to the device, visit Huaweienterprise technical support website http://support.huawei.com/enterprise and search forproduct documentation by keyword. The search method is described as follows:lFit AP:–Upgrade: Search for Fit AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Configuration: Search for AC6605 product documentation, and refer to theconfiguration guide in the documentation of the correct version.AP4050DN-EHardware Installation and Maintenance Guide 3 Logging In to the DeviceIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.30
lFat AP:–Upgrade: Search for Fat AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Configuration: Search for Fat AP product documentation, and refer to theconfiguration guide in the documentation of the correct version.lcloud AP:–Upgrade: Search for cloud AP upgrade guide, and refer to the upgrade guide in thedocumentation of the correct version.–Online configuration: Search for cloud AP product documentation, and refer tothe configuration guide in the documentation of the correct version.–Service configuration after APs go online: Search for CloudCampus solutionproduct documentation, and refer to the deployment guide in the documentationof the correct version.AP4050DN-EHardware Installation and Maintenance Guide 3 Logging In to the DeviceIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.31
4 Hardware FailuresAbout This ChapterThis section describes common methods for troubleshooting typical hardware faults.4.1 A Device Fails to Be Powered On4.1 A Device Fails to Be Powered OnFault DescriptionThe SYS indicator of a device is off.Possible CausesPower Supply Mode Possible CausePower supply using a power module lThe device is powered off.lThe power cable is not securelyconnected to the device.lThe power supply unit has failed.–If the device connects to an externalpower source, its power adapter mayfail.–If the device has a built-in powersupply, the device itself may befaulty.AP4050DN-EHardware Installation and Maintenance Guide 4 Hardware FailuresIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.32
Power Supply Mode Possible CausePoE power supply lThe power sourcing equipment does notsupport the PoE function or is faulty.lThe power sourcing equipment does notsupport the required power supply mode.lThe power sourcing equipment does notprovide sufficient power.lThe power sourcing equipment isincorrectly configured (the PoE functionis disabled or the power-off time range isimproperly set).lThe line is faulty (the network cable ordistribution frame is damaged).lThe device is faulty. Troubleshooting ProcedurePower Supply Mode Troubleshooting ProcedurePower supply using a power module 1. Check whether the device is poweredoff.2. Check that the power cable is securelyconnected to the device.3. Check whether the power supply isnormal.Replace the power adapter with a normalone. If the device is powered on, theoriginal power adapter is faulty. Contacttechnical support personnel or Huaweiagent and ask them to replace the poweradapter.4. If the device still cannot be powered on,the device itself is faulty. Contacttechnical support personnel or Huaweiagent and ask them to replace the device.AP4050DN-EHardware Installation and Maintenance Guide 4 Hardware FailuresIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.33
Power Supply Mode Troubleshooting ProcedurePoE power supply 1. Check whether the power sourcingequipment supports PoE or is faulty.2. Check whether the power output modeof the power sourcing equipment issupported by the powered device.3. Check whether the power sourcingequipment can support the maximumpower consumption of the device.4. Check whether the configuration on thepower sourcing equipment causes PoEpower supply errors, such as the PoEfunction is disabled or the power-offtime range is incorrectly set.5. Check whether the network cable ordistribution frame is faulty.6. If the device still cannot be powered on,the device itself is faulty. Contacttechnical support personnel or Huaweiagent and ask them to replace the device. NOTEThe output power of an 802.3af PSE port is 15.4 W, that of an 802.3at PSE port is 30 W, and that of an802.3bt PSE port is 60 W.AP4050DN-EHardware Installation and Maintenance Guide 4 Hardware FailuresIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.34
5 AppendixAbout This Chapter5.1 On-site Cable Assembly and Installation5.2 Environmental Requirements for Device Operation5.3 Equipment Grounding Specifications5.4 Engineering Labels for Cables5.5 Guide to Using Optical Modules5.6 Fault Tag5.7 Installation Checklist5.8 Guide to Making Drip Loops5.9 Power Adaptation Solution5.1 On-site Cable Assembly and Installation5.1.1 Cable Assembly PrecautionsChecking the Appearance of CableslIf the cable jacket or insulation is visibly dirty, clean it before assembly.lIf the jacket or insulation of a cable has visible damage, irreparable scuffing, or otherdefects, do not use the cable.lIf the shield layer of a cable is damaged, do not use the cable.lIf the cable jacket or insulation cracks after the cable is bent or twisted, discard this cableand check whether other cables have the same problem. If other cables have the sameproblem, replace these cables.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.35
Checking the Appearance of ConnectorslDo not use connectors with visible defects, damage, rust or scuffing.lDo not use connectors if their shells or pins have exposed part or uneven plating, or theirpins are lost, broken, or bent.lDo not use connectors that have dirt on their pins or in their jacks or if there areconductors between pins or between pins and the shell.Precautions for AssemblylUse dedicated tools or tools delivered by Huawei and follow the methods given hereduring assembly.lHold terminals of cables instead of pulling the cables themselves when installing orremoving cable components.lTake the following precautions when cutting or stripping cables:–Make cables slightly longer than necessary.–Coil cables longer than 2 m (6.56 ft) after cutting. Bind and fasten the coils usingbundling ropes. The inner diameters of the coils should be larger than 20 times theouter diameters of the cables.–When stripping the jackets of cables, avoid damaging the shield layers (braid oraluminum foil), insulation, core conductors, and other jackets that do not need to bestripped.–After assembling cables, cut all visible cross sections of jackets to ensure that thecross sections are arranged neatly.–Do not touch the core conductors of cables with your hands. Terminate exposedconductors in a timely way after stripping off insulation so that the surface of theconductors does not become oxidized.lTake the following precautions when crimping and connecting cables or connectors:–The terminals and conductors should be connected tightly after they are crimped.They should not be moved or turned.–Cut all the exposed copper wires.–Try to avoid a second crimping of sleeves.–Keep all the conductors clean and aligned.NOTEThe connectors, cables, and tools provided by different vendors may be different. The figures in thisdocument are for your reference only.5.1.2 Assembling Power Cables5.1.2.1 Assembling a DC 2-Pin Round Connector (A)ContextFigure 5-1 shows the components of DC 2-PIN round connector A.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.36
Figure 5-1 Components of DC 2-pin round connector A1. Enclosure 2. Shield circle 3. Clip 4. Socket 5. Nut ProcedureStep 1 Bind a cable tie, separate the socket and nut, and install them on the cable, as shown in Figure5-2.Figure 5-2 Installing the nut on the cable Step 2 Strip the cable as shown in Figure 5-3.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.37
Figure 5-3 Stripping the cable Step 3 Open the clip and correctly insert the core wires to the negative and positive holes, as shownin Figure 5-4.Figure 5-4 Inserting core wires Step 4 Use a Phillips screwdriver to tighten the crimping screw in "+" hole, rotate the connector by180 degree, and tighten the crimping screw in "-" hole, as shown in Figure 5-5.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.38
Figure 5-5 Tightening the crimping screws Step 5 Close the clip and tighten the screw to compact the shield layer, as shown in Figure 5-6.Figure 5-6 Compacting the shield layer Step 6 Pre-tighten the socket and enclosure and use the Phillips screwdriver to tighten the socketwith the tightening torque no less than 1.2 N•m, as shown in Figure 5-7.Figure 5-7 Tightening the socket Step 7 Pre-tighten the socket and nut and use the Phillips screwdriver to tighten the nut with thetightening torque no less than 1.2 N•m, as shown in Figure 5-8.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.39
Figure 5-8 Tightening the nut Step 8 Use a multimeter to check the connectivity of the 2-pin round connector's cable components,as shown in Figure 5-9.Figure 5-9 Checking connectivity The connectivity meets standards if the following conditions are met:lPositive and negative holes of the connector are not short-circuited.lThe metal enclosure and connector's holes are not short-circuited.lThe cable shield layer is properly connected to the metal enclosure.lCore wires are properly connected to the connector's holes.Step 9 If devices are installed outdoor, wrap three layers of PVC insulation tape around theconnector for protection, as shown in Figure 5-10.NOTICEEnsure that proper quantity of the PVC insulation tape is used for wrapping the connector,facilitating the connector uninstallation in later maintenance.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.40
Figure 5-10 Wrapping PVC insulation tape ----End5.1.2.2 Assembling a DC 2-Pin Round Connector (B)This topic describes how to assemble a DC 2-pin round connector (B) and key operations.ContextTable 5-1 lists power cables connected to the active antenna unit (AAU).Table 5-1 AAU power cableAAU Side Cable Commonly-UsedColorsColors Used inBritainDC roundwaterproofconnectorRTN (+) Black or brown BlueNEG (-) Blue Gray NOTEThe color and appearance of cables in this topic are for reference only. The cable color and appearancevary depending on countries and regions.Figure 5-11 shows components of the DC round waterproof connector.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.41
Figure 5-11 Components of the DC round waterproof connector1. Enclosure 2. Socket 3-1. Clamping jaw 1 3-2. Clamping jaw 2 4. Nut ProcedureStep 1 Determine the diameter of the cable to be installed. If the diameter is larger than 14 mm,replace the clamping jaw, as shown in Figure 5-12. During the replacement, connect theclamping jaw boss to the groove inside the socket and ensure that the clamping jaw iscompletely installed in the socket, as shown in Figure 5-13.NOTElPower cables supported by clamping jaw 1: 2 x 12 AWG, 2 x 4 mm2, and 2 x 6 mm2lPower cables supported by clamping jaw 2: 2 x 8 AWG and 2 x 10 mm2Figure 5-12 Replacing clamping jaws1. Clamping jaw 1 2. Clamping jaw 2 AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.42
Figure 5-13 Correct operation for replacing a clamping jaw1. Groove 2. Boss Step 2 Reserve the cable length at the assembly end, bind the plastic cable tie, install the nut,clamping jaw, and socket on the cable and pre-tighten them, as shown in Figure 5-14.Figure 5-14 Pre-tightening1. Cable 2. Plastic cable tie Step 3 Use the stripping ruler card to measure required lengths, strip the outer jacket (48 mm) on thehead of the cable to be connected and the outer jacket (17 mm) of each core wire, twist theshield layers into one strand, as shown in Figure 5-15.NOTICElThe stripping ruler card is delivered with the components of the connector.lCut the padding using diagonal pliers.lGently strip the insulation sheath to avoid damage to the conductor metal.lEnsure that the edge of core wires is not split.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.43
Figure 5-15 Stripping the cable1. Shield layer Step 4 Connect the cable NEG (-) (gray in Britain and blue in other countries) to - end of theconnector and cable RTN (+) (blue in Britain and black/brown in other countries) to + end ofthe connector. Tighten two crimping screws using the Phillips screwdriver and compact thecable with tightening torque 1.4 N•m, as shown in Figure 5-16.Figure 5-16 Tightening the crimping screws Step 5 After the cables are assembled, pull the cables slightly to check whether the connections aresecure. If the cable slides outward or the wire of the cable is exposed outside the hole for thecable, remove the cable, cut the split wires, and then strip the jacket and install the cableagain.Step 6 Twist the shield layers into one strand and insert it into the shield slot, tighten the tail screw,and fasten the shielded layer with tightening torque 1.4 N•m, as shown in Figure 5-17.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.44
Figure 5-17 Compacting the shield layer1. Shield layer NOTECut the extra shield layer using the diagonal pliers.Step 7 Tighten the socket and enclosure until the red line on the socket is invisible, as shown inFigure 5-18.Figure 5-18 Tightening the socket and enclosure Step 8 Pre-tighten the nut and socket and further tighten the nut using a torque wrench (openingwidth: 28 mm), as shown in Figure 5-19.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.45
Figure 5-19 Tightening the nut Step 9 Use a multimeter to check the reliability of cable components, as shown in Figure 5-20.Figure 5-20 Checking reliability NOTICElEnsure that the short circuit does not occur between the positive and negative holes ofthe connector.lEnsure that the short circuit does not occur between the metal enclosure and connector'spositive and negative holes.Step 10 If devices are installed outdoor, wrap three layers of PVC insulation tape around theconnector for protection, as shown in Figure 5-21.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.46
Figure 5-21 Wrapping PVC insulation tape NOTICEEnsure that proper quantity of the PVC insulation tape is used for wrapping the connector,facilitating the connector uninstallation in later maintenance.----End5.1.2.3 Assembling the OT Terminal and Power CableContextFigure 5-22 shows the components of an OT terminal and a power cable.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.47
Figure 5-22 Components of an OT terminal and a power cableA. Heat-shrinkable tubing B. Bare crimping terminal C. Insulation D. Conductor ProcedureStep 1 Based on the cross-sectional area of the cable conductor, strip a length of insulation coating Cto expose the conductor D of length L1, as shown in Figure 5-23. The recommended valuesof L1 are listed in Table 5-2.Figure 5-23 Stripping a power cable (OT terminal) NOTICElWhen you strip a power cable, do not damage the conductor of the cable.lIf the bare crimping terminal is not provided by Huawei, the value of L1 is 1 mm (0.04 in.)to 2 mm (0.08 in.) greater than the value of L.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.48
Table 5-2 Mapping between the cross-sectional area of the conductor and the value of L1Cross-SectionalArea ofConductor(mm2(in.2))Value of L1(mm(in.))Cross-SectionalArea of Conductor(mm2(in.2))Value of L1(mm(in.))1 (0.002) 7 (0.28) 10 (0.015) 11 (0.43)1.5 (0.002) 7 (0.28) 16 (0.025) 13 (0.51)2.5 (0.004) 7 (0.28) 25 (0.039) 14 (0.55)4 (0.006) 8 (0.31) 35 (0.054) 16 (0.63)6 (0.009) 9 (0.35) 50 (0.077) 16 (0.63) NOTEIf you are proficient in assembling OT terminals and power cables, you can obtain the value of L1 bycomparing the part to be crimped with the power cable.Step 2 Put the heat-shrinkable (A) tubing onto the bare crimping terminal, as shown in Figure 5-24.Figure 5-24 Putting the heat shrink tubing onto the bare crimping terminal Step 3 Put the OT terminal B onto the exposed conductor, and ensure that the OT terminal is in goodcontact with the insulation coating C, as shown in Figure 5-24.NOTICEAfter the conductor is fed into the OT terminal, the protruding part of the conductor, or L2 inFigure 5-24, must not be longer than 2 mm (0.08 in.).AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.49
Step 4 Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure5-25.NOTEThe shapes of crimped parts may vary with the crimping dies.Figure 5-25 Crimping the joint parts of the bare crimping terminal and the conductor (OTterminal) Step 5 Push the heat shrink tubing (A) toward the connector until the tube covers the crimped part,and then use a heat gun to heat the tube, as shown in Figure 5-26.Figure 5-26 Heating the heat shrink tubing (OT terminal) NOTICEStop heating the shrink tubing when the connector is securely locked in the shrink tubing. Donot heat the shrink tubing too long as this may damage the insulation coating.----EndAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.50
5.1.2.4 Assembling the JG Terminal and Power CableContextFigure 5-27 shows the components of a JG terminal and a power cable.Figure 5-27 Components of a JG terminal and a power cableA. JG terminal B. Heat-shrinkable tubing C. Insulation layer of a powercableD. Conductor of a power cable ProcedureStep 1 Strip a part of the insulation to expose the cable conductor with a length of L, as shown inFigure 5-28. The recommended values of L are listed in Table 5-3.NOTICElWhen you strip a power cable, do not damage the conductor of the cable.lIf the bare crimping terminal is not provided by Huawei, you can adjust the value of L asrequired.Figure 5-28 Stripping a power cable (JG terminal)AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.51
Table 5-3 Mapping between the cross-sectional area of the conductor and the value of LCross-Sectional Area of Conductor(mm2(in.2))Value of L (mm(in.))16 (0.025) 13 (0.51)25 (0.039) 14 (0.55)35 (0.054) 16 (0.63)50 (0.077) 16 (0.63) Step 2 Put the heat shrink tubing onto the bare crimping terminal, as shown in Figure 5-29.Figure 5-29 Putting the heat shrink tubing onto the bare crimping terminal Step 3 Put the bare crimping terminal onto the exposed conductor, and ensure that the bare crimpingterminal is in good contact with the insulation of the power cable, as shown in Figure 5-29.Step 4 Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure5-30.Figure 5-30 Crimping the joint parts of the bare crimping terminal and the conductor (JGterminal)AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.52
Step 5 Push the heat shrink tubing toward the connector until the tube covers the crimped part, andthen use a heat gun to heat the tube, as shown in Figure 5-31.Figure 5-31 Heating the heat shrink tubing (JG terminal) ----End5.1.2.5 Assembling the Cord End Terminal and the Power CableContextFigure 5-32 shows the components of a cord end terminal and a power cable.Figure 5-32 Components of a cord end terminal and a power cableA. Cord end terminal B. Insulation layer of a power cable C. Conductor of a power cable ProcedureStep 1 Strip a part of the insulation to expose the cable conductor with a length of L1, as shown inFigure 5-33. The recommended values of L1 are listed in Table 5-4.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.53
NOTICEWhen you strip a power cable, do not damage the conductor of the cable.Figure 5-33 Stripping a power cable (cord end terminal) Table 5-4 Mapping between the cross-sectional area of the conductor and the value of L1Cross-SectionalArea ofConductor(mm2(in.2))Value of L1(mm(in.))Cross-SectionalArea of Conductor(mm2(in.2))Value of L1(mm(in.))1 (0.002) 8 (0.31) 10 (0.015) 15 (0.59)1.5 (0.002) 10 (0.39) 16 (0.025) 15 (0.59)2.5 (0.004) 10 (0.39) 25 (0.039) 18 (0.71)4 (0.006) 12 (0.47) 35 (0.054) 19 (0.75)6 (0.009) 14 (0.55) 50 (0.077) 26 (1.02) Step 2 Put the cord end terminal onto the conductor, and ensure that the conductor is aligned with theedge of the cord end terminal, as shown in Figure 5-34.NOTICEAfter the conductor is fed into the cord end terminal, the protruding part of the conductormust not be longer than 1 mm (0.04 in.).AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.54
Figure 5-34 Putting the cord end terminal onto the conductor Step 3 Crimp the joint parts of the cord end terminal and the conductor, as shown in Figure 5-35.Figure 5-35 Crimping the cord end terminal and the conductor Step 4 Check the maximum width of the tubular crimped terminal. The maximum width of a tubularcrimped terminal is listed in Table 5-5.Table 5-5 Maximum width of a tubular crimped terminalCross-Sectional Area of TubularTerminal (mm2(in.2))Maximum Width of Crimped TerminalW1 (mm(in.))0.25 (0.0004) 1 (0.04)0.5 (0.0008) 1 (0.04)1.0 (0.0015) 1.5 (0.06)1.5 (0.0023) 1.5 (0.06)2.5 (0.0039) 2.4 (0.09)4 (0.006) 3.1 (0.12)6 (0.009) 4 (0.16)AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.55
Cross-Sectional Area of TubularTerminal (mm2(in.2))Maximum Width of Crimped TerminalW1 (mm(in.))10 (0.015) 5.3 (0.21)16 (0.025) 6 (0.24)25 (0.039) 8.7 (0.34)35 (0.054) 10 (0.39) ----End5.1.3 Assembling Ethernet Cables5.1.3.1 Assembling the Shielded RJ45 Connector and Ethernet CableContextFigure 5-36 shows the components of an RJ45 connector and a shielded Ethernet cable.Figure 5-36 Shielded RJ45 connector and cableA. Jacket of connector B. Metal shell of connector C. Wire holder ofconnectorD. Plug of connectorE. Jacket of Ethernet cable F. Shield layer of EthernetcableG. Twisted-pair wires - ProcedureStep 1 Fit the jacket of the connector onto the Ethernet cable, as shown in Figure 5-37.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.56
Figure 5-37 Fitting the jacket of the connector onto the Ethernet cable Step 2 Remove a 30 mm (1.18 in.) long section of the jacket, cut off the nylon twine inside thejacket, and cut a no more than 5 mm (0.20 in.) cleft in the jacket, as shown in Figure 5-38.NOTICElWhen you remove a section of the jacket, do not damage the shield layer of the twisted-pair cable.lWhen you remove the shield layer, do not damage the insulation of the twisted-pair cable.Figure 5-38 Removing the jacket of a twisted-pair cable (unit: mm (in.)) Step 3 Fit the metal shell onto the twisted-pair cable. The shield layer is covered by the metal shell,as shown in Figure 5-39.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.57
Figure 5-39 Fitting the metal shell onto the twisted-pair cable Step 4 Fit the metal shell onto the twisted-pair cable until the shield layer is covered completely.Along the edge of the metal shell, cut off the aluminum foil shield layer and ensure that thereis no surplus copper wire. The exposed twisted-pair cable is about 20 mm (0.79 in.) long, asshown in Figure 5-40.Figure 5-40 Removing the shield layer of a twisted-pair cable (unit: mm (in.)) Step 5 Lead the four pairs of twisted-pair wires through the wire holder, as shown in Figure 5-41 andFigure 5-42. Ensure that the colored wires are in the correct location in the cable.Figure 5-41 Leading wires through the wire holderCG AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.58
Figure 5-42 Cable locations in a wire holderWhite-GreenGreenWhite-OrangeOrangeBlueWhite-BlueWhite-BrownBrown Step 6 Align the four pairs of cables in the holder, as shown in Figure 5-43. The connectionsbetween the wires and the pins are shown in Figure 5-44 and listed in Table 5-6.Figure 5-43 Four pairs of cables on a wire holder Figure 5-44 Connections between wires and pinsBrownWhite -BrownGreenWhite-BlueBlueWhite-GreenOrangeWhite-OrangePin 8Pin 1AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.59
Table 5-6 Connections between wires and pins (using a straight-through cable as an example)Matching Pins of Wires Wire Color1 White-Orange2 Orange3 White-Green4 Blue5 White-Blue6 Green7 White-Brown8 Brown Step 7 Cut off the surplus cables along the lower edge of the wire holder, as shown in Figure 5-45.Figure 5-45 Cutting off surplus cables Step 8 Put the connector body onto the wire holder and turn the metal shell by 90°, as shown inFigure 5-46.NOTEEnsure that the wire holder is in good contact with the connector body.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.60
Figure 5-46 Putting the connector body onto the wire holder Step 9 Push the metal shell toward the connector body until the wire holder and the connector bodyare engaged completely. Crimp the connector, as shown in Figure 5-47.Figure 5-47 Crimping the connector Step 10 Push the jacket towards the metal shell until the metal shell is covered. This completes theassembly of one end of the cable, as shown in Figure 5-48.Figure 5-48 Pushing the metal shell AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.61
Step 11 To complete the assembly of the other end, repeat steps 1 to 10.----End5.1.3.2 Assembling an Optimized Shielded RJ45 Connector and SFTP NetworkCablesContextThis topic describes how to assemble an optimized shielded RJ45 connector with a SecureFile Transfer Protocol (SFTP) straight-through network cable as an example. The connectorhas a cable support rack but does not have a metal jacket. Such a connector can be used forcrimping CAT. 6 network cables.Figure 5-49 shows the shielded RJ45 connector.Figure 5-49 Shielded RJ45 connector1: Corewires2: Aluminum foil 3: Braidshield4: Outerjacket5: RJ45connector6: Load bar 7: Cable supportrack ProcedureStep 1 Strip 20 mm outer jacket off the network cable, peel off the braid shield backward, and cut offthe aluminum foil and protection band, as shown in Figure 5-50.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.62
NOTICEEnsure that the shielded layer is intact when stripping outer jackets off the network cable.Keep the cable insulation intact when stripping the shielded layer.Figure 5-50 Stripping the cable Step 2 Arrange core wires in the order of colors shown in Figure 5-51 and fix the cable support rackto the bottom of the core wires.Figure 5-51 Core wire order Step 3 Hold the arranged core wires and route them through the load bar, as shown in Figure 5-52.Table 5-7 shows the mapping between the core wires and pins of the connector.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.63
Figure 5-52 Routing the core wires through the load bar Table 5-7 Mapping between core wires and pinsPin ID Core Wire Color1 White-orange2 Orange3 White-green4 Blue5 White-blue6 Green7 White-brown8 Brown Step 4 After routing core wires through the load bar, move the load bar to the bottom to connect tothe cable support rack, and neatly cut the edge cables, as shown in Figure 5-53.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.64
Figure 5-53 Neatly cutting edge cables Step 5 Insert the load bar into the RJ45 connector, as shown in Figure 5-54.Figure 5-54 Inserting the load bar into the RJ45 connector NOTICECables must be inserted into the bottom of the connector, which can be checked on the side orfront end face of the connector.Step 6 Use the crimping tool to crimp the connector, as shown in Figure 5-55. Use cutting pliers toneatly cut braid shields exposed out of the connector along the load bar, as shown in Figure5-56.Figure 5-55 Crimping the connectorAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.65
Figure 5-56 Neatly cutting braid shields Step 7 Repeat Step 1 through Step 6 to assemble the optimized shielded RJ45 connector on the otherend of the network cable.----End5.1.3.3 Assembling an Integrated Shielded RJ45 Connector and SFTP NetworkCablesContextThis topic describes how to assemble an integrated shielded RJ45 connector with a SecureFile Transfer Protocol (SFTP) straight-through network cable as an example. The connectordoes not have a cable support rack or metal jacket.Figure 5-57 shows the integrated shielded RJ45 connector.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.66
Figure 5-57 Shielded RJ45 connector1: Core wires 2: Aluminum foil 3: Braid shield 4: Outer jacket 5: RJ45 connector ProcedureStep 1 Strip 20 mm outer jacket off the network cable, peel off the braid shield backward, and cut offthe aluminum foil and protection band, as shown in Figure 5-58.NOTICEEnsure that the shielded layer is intact when stripping outer jackets off the network cable.Keep the cable insulation intact when stripping the shielded layer.Figure 5-58 Stripping the cableAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.67
Step 2 Arrange the twisted pair wires in the order of colors shown in Table 5-8 and cut the wire endsneatly with 12 mm core wires left, as shown in Figure 5-59.Figure 5-59 Core wire order Table 5-8 Mapping between core wires and pinsPin ID Core Wire Color1 White-orange2 Orange3 White-green4 Blue5 White-blue6 Green7 White-brown8 Brown Step 3 Route the arranged core wires through the RJ45 connector, as shown in Figure 5-60.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.68
Figure 5-60 Routing core wires through the connector Step 4 Use the crimping tool to crimp the connector, as shown in Figure 5-61.Figure 5-61 Crimping the connector Step 5 Neatly cut braid shields exposed out of the connector along the load bar, as shown in Figure5-62.Figure 5-62 Neatly cutting braid shields Step 6 Repeat Step 1 through Step 5 to assemble the integrated shielded RJ45 connector on the otherend of the network cable.----EndAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.69
5.1.3.4 Assembling a Shielded RJ45 Connector and an FTP Network CableContextThis topic describes how to assemble a shielded RJ45 connector and File Transfer Protocol(FTP) network cable and related notes.Figure 5-64 shows the shielded RJ45 connector.Figure 5-63 Connector jacket Figure 5-64 Shielded RJ45 connector Figure 5-65 CableA: ConnectorjacketB: Connector C: Core wires of thetwisted pairD: Aluminum foil used as thenetwork cable shieldE: Network cablejacket ProcedureStep 1 Route the network cable through the connector jacket, as shown in Figure 5-66.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.70
Figure 5-66 Routing the network cable through the connector jacket Step 2 Strip 20 mm outer jacket off the cable and cut off the nylon layer inside the jacket, as shownin Figure 5-67.NOTICEEnsure that the aluminum foil used as a shielded layer is intact when stripping outer jacketsoff the twisted pair cable.Figure 5-67 Stripping the outer jacket Step 3 Pull outward the shielded aluminum foil and cut off the PET membrane and ground cablesalong the end face of the outer jacket, as shown in Figure 5-68.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.71
Figure 5-68 Cutting off the PET membrane and ground cables Step 4 Arrange the twisted core wires according to color order shown in Figure 5-69. Use cuttingpliers to neatly cut the front end of the twisted pair, as shown in Figure 5-70. Figure 5-71shows pin arrangement of each contact of the connector.Figure 5-69 Mapping between colors and pins AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.72
Figure 5-70 Neatly cutting the twisted pair Figure 5-71 Pin arrangement of the connectorPin8Pin1 Step 5 Insert the arranged four twisted pair cables into the connector, as shown in Figure 5-72.NOTICElCables must be inserted into the bottom.lThe aluminum foil must keep intact after cables are inserted into the connector.Figure 5-72 Inserting cables into the connectorAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.73
Step 6 Use the crimping tool dedicated for FTP network cables to crimp the connector and neatly cutthe aluminum foil along the end face of the connector, as shown in Figure 5-73.Figure 5-73 Crimping the connector Step 7 Move the connector jacket to the connector body to wrap the connector shell, as shown inFigure 5-74.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.74
Figure 5-74 Wrapping the connector shell Step 8 Repeat Step 1 through Step 7 to assemble the shielded RJ45 connector on the other end of thenetwork cable.----End5.1.3.5 Assembling an Unshielded RJ45 Connector and Ethernet CableContextFigure 5-75 shows the components of an unshielded RJ45 connector and cable.Figure 5-75 Components of an unshielded RJ45 connector and cableABCA. Plug of connector B. Jacket C. Twisted-pair wires AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.75
ProcedureStep 1 Remove a 16-mm (0.63 in.) long section of the jacket, as shown in Figure 5-76.NOTICEWhen you remove the shield layer, do not damage the insulation of the twisted-pair cable.Figure 5-76 Removing the jacket of a twisted-pair cable (unit: mm (in.)) Step 2 Align the four pairs of wires and cut the ends neatly, as shown in Figure 5-77. Theconnections between the wires and the pins are listed in Table 5-9.Figure 5-77 Connections between wires and pins (unit: mm (in.))C16White-OrangeWhite-GreenOrangeBlueWhite-BlueGreenWhite-BrownBrownPin 8Pin 1 Table 5-9 Connections between wires and pins (using a straight-through cable as an example)Matching Pins of Wires Wire Color1 White-Orange2 Orange3 White-Green4 Blue5 White-Blue6 Green7 White-BrownAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.76
Matching Pins of Wires Wire Color8 Brown Step 3 Feed the cable into the plug, and crimp the connector, as shown in Figure 5-78.NOTEWhen inserting the cable, check from the side or bore of the plug to ensure that the cable is completelyseated in the plug.Figure 5-78 Crimping the connector Step 4 To complete the assembly of the other end, repeat steps 1 to 3.----End5.1.3.6 Checking the Appearance of Contact StripsContextlTo ensure proper contact between the crimped wires and the wire conductors, the heightsand sizes of the contact strips must be standard and the same.lThe contact strips must be parallel to each other, with an offset of less than ± 5°. The topmargin of a strip must be parallel to the axis of the connector, with an offset of less than± 10°.lTo ensure conductivity, the surface of the contact strips must be clean.lThe contact strips must be in good contact with the RJ45 socket. The plastic separatorsmust remain intact and be aligned.lThe contact strip blade must extend beyond the ends of the wires. The ends of the wiresmust be in contact with the edge of the RJ45. The distance between them must be lessthan 0.5 mm (0.02 in.).ProcedureStep 1 Hold the crimped connector, with the front side facing you, and check whether the contactstrips are of the same height. The height should be 6.02 ± 0.13 mm (0.237 ± 0.005). If ameasuring tool is not available, you can compare the connector with a standard connector.Figure 5-79 shows an unqualified piece, and Figure 5-80 shows a qualified piece.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.77
NOTEAll unqualified pieces must be crimped again.Figure 5-79 Contact strips of different heights Figure 5-80 Contact strips of the same height Step 2 Hold an RJ45 connector and turn it 45°. Observe the top edges of the metal contact strips.Figure 5-81 shows an unqualified piece.Figure 5-81 Unparallel contact strips of different heights AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.78
Step 3 Check whether the contact strips are clean. If they are not clean and the dirt cannot beremoved, replace it with a new RJ45 connector. Figure 5-82 shows an unqualified piece.Figure 5-82 Dirt on a contract strip Step 4 Check whether the contact strips and the plastic separators are well aligned and intact. If aseparator is skewed and cannot be fixed, replace it with a new RJ45 connector. Figure 5-83shows an unqualified piece.Figure 5-83 Skewed plastic separators Step 5 Hold the connector with the side facing towards you, and check whether you can see thecross-sections of the wires. Ensure that the ends of the wires are in good contact with the edgeof the RJ45, and that the contact strip blade extends beyond the ends of the wires and iscrimped with the wires. If not, replace the connector. Figure 5-84 shows an unqualified piece.Figure 5-84 Wires not in good contact with the edge of the RJ45AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.79
----End5.1.3.7 Testing the Connection of Assembled CablesContextHuawei provides two types of Ethernet cables: straight-through cables and crossover cables.lStraight-through cables are connected in a one-to-one manner. They are used to connectterminals such as a computer or switch to network devices. Table 5-10 lists theconnections of core wires in a straight-through cable.Table 5-10 Connections of core wires in a straight-through cableRJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not2 2 Orange Twisted1 1 Orange-White6 6 Green Twisted3 3 Green-White4 4 Blue Twisted5 5 Blue-White8 8 Brown Twisted7 7 Brown-White lCrossover cables are connected in a crossover manner. They are used to connectterminals such as two computers or switches. Table 5-11 lists the connections of corewires in a crossover cable.Table 5-11 Connections of core wires in a straight crossover cableRJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not6 2 Orange Twisted3 1 Orange-White2 6 Green Twisted1 3 Green-White4 4 Blue Twisted5 5 Blue-White8 8 Brown TwistedAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.80
RJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not7 7 Brown-White Figure 5-85 shows the pins of an RJ45 connector.Figure 5-85 Pins of an RJ45 connectorPin8Pin1 ProcedureStep 1 Feed both connectors of the cable into the ports of the cable tester.Step 2 After the connectors are properly inserted, turn on the tester. If the indicators from 1 to G turnon simultaneously, you can infer that the pins work normally and the wires are correctlyconnected.NOTETurn the switch to the S position to slow down lighting of the indicators so that you can see theindicators more clearly, as shown in Figure 5-86.Figure 5-86 Testing the conduction and connections of wires Step 3 Gently shake the connector and repeat Step 2 to check whether the metal contact strips are ingood contact with the core wires and Ethernet ports, as shown in Figure 5-87.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.81
Figure 5-87 Checking the reliability The procedure for testing a crossover cable is the same as that for testing a straight-throughcable except for the sequence in which the indicators turn on, which depends on the wireconnections of a crossover cable.The Ethernet cable is qualified if the indicators turn on in the following sequence:At the master (left) section of the tester, the indicators turn on in the sequence of 1-8-G. At theslave (right) section of the tester, the indicators turn on in the sequence of 3-6-1-4-5-2-7-8-G.If the indicators do not come on in this sequence, the Ethernet cable is unqualified.NOTEIf a tester is not available, you can use a multimeter to perform a simple test, as shown in Figure 5-88.Figure 5-88 Testing the connection of an Ethernet cableAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.82
----End5.1.3.8 Common Network Cable Faults and Preventive MeasuresTable 5-12 lists common network cable faults and preventive measures.Table 5-12 Common network cable faults and preventive measuresSymptom Cause Preventive MeasurelThe device cannot bepowered using PoE.lThe device restartsfrequently.lA large number of errorpackets exist on thedevice or services areinterrupted.A network cable has highresistance or is too long.Before using network cablespurchased from othersuppliers, use a multimeteror other tools to measurecable resistance. Replace thenetwork cables if theirresistance does not conformto PoE standardrequirements for networkcable quality.Non-standard network cableconnectors cause poorcontact with deviceinterfaces.Before making a networkcable, use a standard go-nogo gauge to test theconnectors purchased fromother suppliers. Replace theconnectors if they do notcomply with the standard.Wires in a network cable areconnected to wrong pins.After a network cable ismade, use a conductiontester to measure cableconnectivity. For test details,see 5.1.3.7 Testing theConnection of AssembledCables.A network cable connectoris not crimped securely,causing poor contactbetween the network cableand pins in the connector.When testing a networkcable with a conductiontester, gently shake the cableconnector and checkwhether indicators on theconduction tester are innormal state. If indicators 1to G turn on in a wrongsequence, remake thenetwork cable. The following methods are often used to test network cable resistance, and the test criteria arelisted in Table 5-13:AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.83
lUse a network cable tester (high-end cable tester of Fluke) to measure network cableresistance.lConnect multimeter probes to two ends of each wire in a network cable and check theresistance value on the multimeter.lConnect a network cable to an AP. Use a multimeter to test the resistance between pins 1and 2 (or between pins 3 and 6, 4 and 5, or 7 and 8) on the other end of the cable. Thecable's DC resistance approximately equals a half of the displayed value.Table 5-13 PoE standard requirements for network cable qualityStandard TotalResistance ofa NetworkCable802.3af ≤ 20 ohms802.3at Maximum PD power consumption <12.95 W≤ 20 ohmsMaximum PD power consumption <25.5 W≤ 12.5 ohms If an AP is connected to a switch or AC (excluding ACU2), you can run the virtual-cable-test command on the switch or AC to check network cable connectivity. For details, see thevirtual-cable-test command in the command reference.5.1.4 Assembling Feeders5.1.4.1 Assembling the Straight Male Coaxial N Connector and the 1/2'' FeederContextFigure 5-89 shows the components of an N coaxial connector and a 1/2" feeder cable.Figure 5-89 Components of an N coaxial connector and a 1/2" feeder cableA. Body of connector B. Back shell of connector C. O-ring seal D. Heat-shrink tubingE. Cable jacket F. Outer conductor of feedercableG. Inner conductor offeeder cableH. Insulation layer offeeder cableAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.84
ProcedureStep 1 Cut the feeder cable, as shown in Figure 5-90.Figure 5-90 Cutting a feeder cable (unit: mm) NOTICElEnsure that the feeder cable is cut with reference to the guide in the package box of theconnector.lAfter you cut the feeder cable, ensure that the cross-section of the outer conductor issmooth, intact, and round.lEnsure that the feeder cable is cut at the wave crest of the outer conductor.lThe inner conductor must be beveled, as shown in Figure 5-90.Step 2 Use a brush to remove the dirt on the cross-section of the feeder cable.Step 3 Feed the feeder cable into the heat-shrink tubing, and cover the outer conductor of the feedercable with the O-ring seal, as shown in Figure 5-91.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.85
Figure 5-91 Installing the heat-shrink tubing and the O-ring seal Step 4 Put the back shell of the connector onto the feeder cable. Tighten the back shell to the end ofthe feeder cable, as shown in Figure 5-92.Figure 5-92 Putting the back shell of the connector onto the feeder cable Step 5 Mount the body of the connector onto the feeder cable so that the inner conductors of theconnector and feeder cable are connected. Use a spanner (27 N•m to 30 N•m torquerecommended) to fasten the body and back shell, as shown in Figure 5-93.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.86
Figure 5-93 Fastening the body and back shell Step 6 Push the heat-shrink tubing towards the connector, as shown in Figure 5-94. Then, heat thetube.Figure 5-94 Assembled N connector Step 7 After the components are assembled, install the connector, as shown in Figure 5-95.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.87
Figure 5-95 Installing the connector ----End5.1.4.2 Assembling a Straight Male Coaxial N Connector and an RG8U FeederContextFigure 5-96 shows the coaxial N connector and RG8U feeder.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.88
Figure 5-96 Coaxial N connector and RG8U feederA: Connector body B: Lining C: Clip D: NutE: Cable jacket F: Shielded layer of thefeederG: Aluminum foil of thefeederH: Insulation medium ofthe feederI: Internal conductor of thefeeder- - - ProcedureStep 1 Strip the feeder with the length shown in Figure 5-97.NOTICEEnsure that the shielded layer F is intact after the stripping.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.89
Figure 5-97 Stripping the feeder Step 2 Route the Cable jacket (E) through the nut (D), as shown in Figure 5-98.Figure 5-98 Installing the nut Step 3 Install the clip (C) on the Cable jacket (E) and move the clip until the clip is close to the Cablejacket, as shown in Figure 5-99.Figure 5-99 Installing the clip Step 4 Peel off the shielded layer (F) to the direction of the clip (C) so that the aluminum foil (G) isexposed, as shown in Figure 5-100.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.90
Figure 5-100 Peeling off the shielded layer Step 5 Install the lining (B) on the feeder and tightly crimp the shielded layer (F) of the feeder, asshown in Figure 5-101.Figure 5-101 Installing the lining Step 6 Cut off the aluminum foil (G) and insulation medium (H) along the end face of the lining (B).Ensure that the length of the conducting line inside the feeder is 4.5 mm, as shown in Figure5-102.Figure 5-102 Cutting off the aluminum foil and insulation medium of the feeder Step 7 Use the file to taper the internal conductor (I) of the feeder, as shown in Figure 5-103.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.91
Figure 5-103 Tapering the internal conductor of the feeder Step 8 Use a brush to remove impurities from the cross section of the feeder, as shown in Figure5-104.Figure 5-104 Clearing impurities Step 9 Insert the half-finished part into the main body of the connector (A) and rotate the nut (D) andthe connector's main body until you cannot rotate further, as shown in Figure 5-105.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.92
Figure 5-105 Installing the connector's main body Step 10 Use a wrench to fix the nut (D) to connector's main body (A) with recommended tighteningtorque 15 N•m, as shown in Figure 5-106.Figure 5-106 Fixing the nut to the connector shell body Step 11 Figure 5-107 shows the effect drawing after the assembling is complete.Figure 5-107 Effect drawing of the straight male coaxial N connectorAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.93
----End5.1.5 Installing Cable Accessories5.1.5.1 Precautions for Installing Cable AccessoriesToolsNOTEThe illustrations in this document may differ from actual situations, but the installation methods are thesame. For example, in this document, the adapters of cable connectors have separate interfaces. In theactual situation, the adapters may have interfaces fixed on equipment.Use dedicated tools provided or specified by Huawei and follow the installation proceduredescribed here.Bending RadiusUnless otherwise specified, bending radius (R) of cables or fibers must meet the requirementslisted in Table 5-14.Table 5-14 Bending radius of cables or fibersCable or Fiber Bending Radius (R)Ordinary cable In normal cases, R ≥ 2d. When the cable isconnected with a connector, R ≥ 5d.Fiber R ≥ 40 mm (1.57 in.); Bending angle > 90° NOTEThe letter d indicates the diameter of a cable or fiber.Precautions for InstallationlHold terminals of cables instead of pulling the cables themselves when installing orremoving cable components.lDo not insert a connector forcibly when the connector is blocked. Use a dedicated tool topull out the connector. Install the connector again after you check that the pins areinserted properly.lBefore tightening screws on cable connectors, ensure that the connectors are properlyconnected to their adapters. Tighten the screw with appropriate force using a flat-head orPhillips screwdriver instead of bare hands or an electric screwdriver. If the screw cannotbe screwed into the tapped hole, determine the reason and try again. Do not apply toomuch force, or the screw or adapter may be damaged.lWhen removing densely aligned cables or fiber connectors, use dedicated pliers such ascable-pulling pliers and fiber-pulling pliers.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.94
lDo not twist, bend, stretch, or extrude fibers during installation.lCover the idle fiber connectors with dust caps. Remove the dust caps before using thefiber connectors.Requirements for Cable RoutinglTo protect cables, remove the burrs in the cable through-holes or install protective ringsin the holes.lTo ease the connection and to avoid stress, keep cable joints slack. After connectingmultiple cables to a connector that has multiple interfaces, keep the cables slack to avoidgenerating stress.lBind or clean cables gently because cable distortion affects signal quality.lKeep cables away from moveable components such as doors.lSharp objects must not touch cable wiring to prevent damage to cables.lTo protect power cables, route power cables of the active and standby power modulesseparately.5.1.5.2 Installing Power Adapters5.1.5.2.1 Installing the OT TerminalProcedurelInstall an OT terminal.a. Align the hole of the OT terminal (conductor upward) with a connecting hole, asshown in Figure 5-108.Figure 5-108 Aligning the OT terminal with a connecting hole NOTEWhen you install an OT terminal, the crimping sleeve is installed as shown in Figure 5-109,where A is correct and B is incorrect.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.95
Figure 5-109 Installing an OT terminal, showing the orientation of crimping sleeve b. Place the spring washer and flat washer in turn, mount a matching screw, and fastenit clockwise, as shown in Figure 5-110.Figure 5-110 Installing two terminals back to back NOTICEEnsure that the OT terminal is not in contact with other terminals or metalcomponents.c. Move the cable slightly and ensure that it is securely connected, as shown in Figure5-111.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.96
Figure 5-111 Installed OT terminal lInstall two OT terminals on a post.Before you install two OT terminals on a post, ensure that the two terminals can beinstalled on the post and that the electrical connecting pieces have a large contact area.Two OT terminals can be installed using any of these methods:–Bend the upper OT terminal at a 45- or 90-degree angle, as shown in Figure 5-112.–Cross the two terminals, as shown in Figure 5-113.Figure 5-112 Bending the upper OT terminal at a 45- or 90-degree angle Figure 5-113 Crossing two terminalsAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.97
NOTICEIf the two terminals are different sizes, place the smaller one above the bigger one. Amaximum of two terminals can be installed on a post.lTo remove an OT terminal, loosen the screw counterclockwise.----End5.1.5.2.2 Installing the Cord End TerminalProcedureStep 1 Hold a cord end terminal upright and place it on a terminal jack, as shown in Figure 5-114. Toensure bump contact and dense connection, place the plain side of the terminal outwards.Figure 5-114 Placing a terminal on a terminal jack vertically Step 2 Insert the terminal into the jack vertically, and turn the screw clockwise to fasten the terminal,as shown in Figure 5-115.Figure 5-115 Feeding the terminal into the jackAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.98
NOTICElEnsure that the exposed section of the terminal is less than 2 mm (0.079 in.) in length.lDo not press the insulation of the terminal.lInsert only one terminal into one jack.Step 3 Move the cable slightly and ensure that it is securely connected.Step 4 Before you remove a cord end terminal, loosen the screw counterclockwise.----End5.1.5.2.3 Installing a 2-Pin Round Connector and a DC Power CableThis topic describes how to install a 2-pin round connector and a DC power cable and relatednotes.ContextFigure 5-116 shows the 2-pin round connector with a DC power cable.Figure 5-116 2-pin round connector and a DC power cable ProcedureStep 1 Waterproof cables to be connected.1. Wrap a layer of PVC tape, as shown in Figure 5-117.Figure 5-117 Wrapping the PVC tapeAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.99
2. Wrap three layers of insulation tape, as shown in Figure 5-118.Figure 5-118 Wrapping three layers of the waterproof insulation tape Figure 5-119 Waterproof insulation tape 3. Wrap three layers of the PVC tape around the waterproof insulation tape, as shown inFigure 5-120.Figure 5-120 Wrapping three layers of the PVC tape AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.100
4. Tightly bind the PVC tape at the ends of the wrapping section, as shown in Figure5-121.Figure 5-121 Tightly binding the PVC tape Step 2 Fix the DC power cable connector to the PWR port, as shown in Figure 5-122. Ensure thatpositive and negative polarities are correct during the installation.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.101
Figure 5-122 Installing the round connector NOTICEUse the outdoor binding strap to bind cables under the DC power cable connector for weightbearing, preventing the DC power cable connector from being pulled. Reserve the propercable length between the binding point and the PWR port.----End5.1.5.3 Installing Ethernet AdaptersAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.102
5.1.5.3.1 Installing a Shielded Ethernet ConnectorProcedureStep 1 Hold the male and female connectors, with the male connector facing the female connector, asshown in Figure 5-123.Figure 5-123 Holding the male and female shielded connectors Step 2 Insert the male connector into the female connector, as shown in Figure 5-124.Figure 5-124 Feeding the male shielded connector into the female shielded connector Step 3 When you hear a click, the cable connector is completely inserted in the port. (The clip on thecable connector pops up to fix the connector in the port.) Pull the connector slightly andensure that it is securely connected, as shown in Figure 5-125.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.103
Figure 5-125 Installed shielded Ethernet connector Step 4 To remove an Ethernet connector, press the locking key and pull out the connector, as shownin Figure 5-126.Figure 5-126 Removing a shielded Ethernet connector ----End5.1.5.3.2 Installing an Unshielded Ethernet ConnectorProcedureStep 1 Hold the male and female connectors, with the male connector facing the female connector, asshown in Figure 5-127.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.104
Figure 5-127 Holding the male and female unshielded connectors Step 2 Feed the male connector into the female connector, as shown in Figure 5-128.Figure 5-128 Feeding the male connector into the female unshielded connector Step 3 A crisp click indicates that the connector is locked by the locking key. Pull the connectorslightly and ensure that it is securely connected. Figure 5-129 shows an installed Ethernetconnector.Figure 5-129 Installed unshielded Ethernet connectorAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.105
Step 4 To remove an Ethernet connector, press the locking key and pull out the connector, as shownin Figure 5-130.Figure 5-130 Removing an unshielded Ethernet connector ----End5.1.5.4 Installing Fiber ConnectorsContextNOTICElAfter you remove the dustproof cap, ensure that the fiber pins are clean and install them assoon as possible.lWhen you disassemble fiber connectors, you must use a dedicated tool if the connectorsare densely installed.5.1.5.4.1 Cleaning Fiber ConnectorsProcedureStep 1 Clean the pins of a fiber connector by using lint-free cotton and alcohol.Step 2 Clean the pins again by using dust-free cotton. If necessary, clean the pins by using an air gun.Ensure that the pins are free from any fiber or debris.----End5.1.5.4.2 Installing an FC Fiber ConnectorAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.106
ProcedureStep 1 Remove the dustproof cap of the FC connector and store it for future use.Step 2 Align the core pin of the male connector with that of the female connector, as shown inFigure 5-131.Figure 5-131 Aligning the male connector with the female connector Step 3 Align the male connector with the female connector and gently push the male connector untilit is completely seated in the female connector, as shown in Figure 5-132.Figure 5-132 Feeding the male connector into the female connector Step 4 Fasten the locking nut clockwise and ensure that the connector is securely installed, as shownin Figure 5-133.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.107
Figure 5-133 Fastening the locking nut Step 5 To disassemble an FC fiber connector, loosen the locking nut counterclockwise, and gentlypull the male connector, as shown in Figure 5-134.Figure 5-134 Disassembling an FC fiber connector ----End5.1.5.4.3 Installing an LC Fiber ConnectorProcedureStep 1 Remove the dustproof cap of the LC fiber connector and store it for future use.Step 2 Align the core pin of the male connector with that of the female connector, as shown inFigure 5-135.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.108
Figure 5-135 Aligning the male connector with the female connector Step 3 Align the male connector with the fiber adapter and gently push the male connector until it iscompletely seated in the fiber connector, as shown in Figure 5-136.Figure 5-136 Feeding the male connector into the female connector Step 4 A clicking sound indicates that the male connector is locked, as shown in Figure 5-137.Figure 5-137 Installed LC connector AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.109
Step 5 To disassemble an LC fiber connector, press the locking nut to release the locking clips fromthe bore, and gently pull the male connector, as shown in Figure 5-138.Figure 5-138 Disassembling an LC fiber connector ----End5.1.5.4.4 Installing the SC Fiber ConnectorProcedureStep 1 Remove the dustproof cap of the SC fiber connector and store it for future use.Step 2 Align the core pin of the male connector with that of the female connector, as shown inFigure 5-139.Figure 5-139 Aligning the male connector with the female connector Step 3 Feed the fiber connector into the female connector, with your fingers holding the shell of thefiber connector (not the pigtail). When you hear a click, the fiber connector is secured by theclips (internal parts, not illustrated in the figure). Pull the fiber connector gently. If theconnector does not loosen, the installation is complete. See Figure 5-140.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.110
Figure 5-140 Installed SC fiber connector Step 4 To disassemble an SC fiber connector, hold the shell of the connector (do not hold the fiber)and gently pull the connector in the direction vertical to the adapter. Unlock the maleconnector, and then separate it from the shell, as shown in Figure 5-141.Figure 5-141 Disassembling an SC fiber connector ----End5.1.5.4.5 Installing an MPO ConnectorProcedureStep 1 Remove the dustproof cap of the MPO fiber connector and store it for future use.Step 2 Align the core pin of the male connector with that of the female connector, as shown inFigure 5-142.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.111
Figure 5-142 Aligning the male connector with the female connector Step 3 Hold the shell labeled "PUSH" and feed the male connector into the female connector untilyou hear a clicking sound. The male and female connectors are securely installed, as shown inFigure 5-143.Figure 5-143 Installed MPO fiber connector Step 4 To disassemble an MPO fiber connector, hold the shell labeled "PULL" and remove the maleconnector, as shown in Figure 5-144.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.112
Figure 5-144 Disassembling an MPO fiber connector ----End5.1.6 Replacing the Mold of the Crimping ToolProcedureStep 1 Hold the handles of a pair of COAX crimping tools. Loosen the two fastening screwscounterclockwise, as shown in Figure 5-145.Figure 5-145 Loosening two fastening screws Step 2 Hold the handles of the COAX crimping tools to open the self-locking mechanism. The jawof the COAX crimping tools opens automatically, as shown in Figure 5-146.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.113
Figure 5-146 Pliers jaw opening automatically Step 3 Remove the mold from the COAX crimping tools, as shown in Figure 5-147.Figure 5-147 Removing the mold from the COAX crimping tools Step 4 Place the mold to be installed into the jaw of the COAX crimping tools and align the screwholes, as shown in Figure 5-148.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.114
Figure 5-148 Installing a new mold in the COAX crimping tool NOTICEKeep the short side of the mold inwards and the long side outwards, with the teeth of the moldaligning from the larger size to the smaller size.Step 5 Hold the handles of the COAX crimping tools tightly to match the mold and the jawcompletely. Align the screw holes, as shown in Figure 5-149.Figure 5-149 Aligning the screw holes Step 6 Hold the handles of the COAX crimping tools with one hand. Tighten the two fasteningscrews clockwise. Figure 5-150 and Figure 5-151shows the mold installed in the COAXcrimping tool.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.115
Figure 5-150 Mold installed in the COAX crimping tool Figure 5-151 An installed mold ----End5.2 Environmental Requirements for Device Operation5.2.1 Environmental Requirements for an Equipment Room5.2.1.1 Requirements for Selecting a Site for an Equipment RoomWhen designing a project, consider the communication network planning and technicalrequirements of the equipment. Also consider hydrographic, geological, seismic, powersupply, and transportation factors.Construction, structure, heating and ventilation, power supply, lighting and fire-proofconstruction of the equipment room should be designed by specialized construction designersto suit the environmental requirements of devices. The equipment room should also followlocal regulations concerning the industrial construction, environmental protection, fire safety,and civil air defense. Construction must conform to government standards, regulations, andother requirements.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.116
The equipment room should be located in a place free from high temperature, dust, toxicgases, explosive materials, or unstable voltage. Keep the equipment room away fromsignificant vibrations or loud noises, as well as power transformer stations.The specific requirements for selecting a site for an equipment room are as follows:lThe room should be located at a distance of at least 5 km (3.11 mi.) from heavy pollutionsources such as smelting and coal mines. It should be located at a distance of at least 3.7km (2.30 mi.) from moderate pollution sources such as chemical, rubber, andgalvanization factories. It should be located at a distance of at least 2 km (1.24 mi.) fromlight pollution sources such as packinghouses and tanyards. If these pollution sourcescannot be avoided, ensure that the equipment room is upwind of the pollution sources. Inaddition, use a high-quality equipment room or protection products.lThe room should be located away from livestock farms, or be upwind of the livestockfarms. Do not use an old livestock room or fertilizer warehouse as the equipment room.lThe equipment room must be far away from residential areas. An equipment room that isnot far away from residential areas must comply with equipment room constructionstandards to avoid noise pollution.lThe room should be located far away from industrial and heating boilers.lThe room should be at least 3.7 km (2.30 mi.) away from the seaside or salt lake.Otherwise, the equipment room should be airtight with cooling facilities. In addition,alkalized soil cannot be used as the construction material. Otherwise, equipment suitablefor wet conditions must be used.lThe doors and windows of the equipment room must be kept closed to maintain anairtight room.lUsing steel doors to ensure sound insulation is recommended.lNo cracks or openings are allowed on the walls or floors. The outlet holes on the walls orwindows must be sealed. Walls must be constructed such that they are smooth, wear-resistant, dustproof, flame retardant, sound insulated, heat absorptive, and haveelectromagnetic shielding.lThe air vent of the room should be far from the exhaust of city waste pipes, big cesspoolsand sewage treatment tanks. The room should be in the positive pressure state to preventcorrosive gases from entering the equipment room and corroding components and circuitboards.lIt is recommended that the room be on or above the second floor. If this requirementcannot be met, the ground for equipment installation in the room should be at least 600mm (23.62 in,) above the maximum flood level.lThe equipment room should be strong enough to resist winds and downpours.lThe room should be located away from dusty roads or sand. If this is unavoidable, thedoors and windows of the equipment room must not face pollution sources.lDo not place air conditioning vents near the equipment so that they blow directly on theequipment because condensation may be blown into the equipment.lDo not use decorative materials that contain sulfur in the equipment room.5.2.1.2 Equipment Room LayoutAn equipment room usually contains mobile switching equipment, telecommunicationsequipment, power supply equipment, and other auxiliary equipment. To ensure easymaintenance and management, place the equipment in different rooms. Figure 5-152 showsthe layout of the equipment room.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.117
Figure 5-152 Layout of the equipment roomControl room Generator roomTransmissionroomMain communicationequipment roomPower distributionroom Battery roomSubstation room Communication cable and optical cablePower cable The general layout principles of the equipment room are as follows:lIt should meet requirements for laying out and maintaining communication cables andpower cables.lIt should reduce the cabling distance, which facilitates cable maintenance, reducespotential communication faults, and maximizes efficiency.5.2.1.3 Construction Requirements for the Equipment RoomTable 5-15 describes the construction requirements for the equipment room.Table 5-15 Construction requirements for the equipment roomItem RequirementsArea The smallest area of the equipment room can accommodate theequipment with the largest capacity.Net height The minimum height of the equipment room should not be less than 3 m(9.84 ft). The minimum height of the equipment room is the net heightbelow overhead beams or ventilation pipes.Floor The floor in the equipment room should be semi-conductive anddustproof. A raised floor with an ESD covering is recommended. Coverthe raised floor tightly and solidly. The horizontal tolerance of eachsquare meter should be less than 2 mm (0.08 in.). If raised floors areunavailable, use a static-electricity-conductive floor material, with avolume resistivity of 1.0 x 107 ohms to 1.0 x 1010 ohms. Ground thisfloor material or raised floor. You can connect them to ground using aone megohm current-limiting resistor and connection line.Load-bearingcapacityThe floor must bear loads larger than 150 kg/m2 (0.21 bf/in.2).AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.118
Item RequirementsDoor andwindowsThe door of the equipment room should be 2 m (6.56 ft) high and 1 m(3.28 ft) wide. One door is enough. Seal the doors and windows withdustproof plastic tape. Use double-pane glass in the windows and sealthem tightly.Wall surfacetreatmentPaste wallpaper on the wall or apply flat paint. Do not use pulverizedpaint.Cable trays Use cable trays to arrange cables. The inner faces of the cable trays mustbe smooth. The reserved length and width of the cable trays, and thenumber, position and dimensions of the holes must comply with therequirements of device arrangement.Water pipe Do not pass service pipes, drainpipes, and storm sewers through theequipment room. Do not place a fire hydrant in the equipment room, butplace it in the corridor or near the staircase.Internalpartition wallSeparate the area where the equipment is installed from the equipmentroom door. The partition wall can block some outside dust.Installationposition of theair conditionerInstall air conditioner vents so that the air does not blow directly onequipment.OtherrequirementsAvoid the proliferation of mildew, and keep out rodents (like mice). Figure 5-153 Internal partition wall inside the equipment room 5.2.1.4 Equipment Room EnvironmentDust on devices may cause electrostatic discharge and result in poor contact for connectors ormetal connection points. This problem can shorten the life span of devices and cause faults.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.119
The equipment room must be free from explosive, conductive, magnetically-permeable, andcorrosive dust. Table 5-16 lists the requirement for dust concentration in the equipment room.Table 5-16 Requirements for dust particles in the equipment roomMechanical activematerialUnit ConcentrationDust particle Particle /m3≤ 3x 104(no visible dust accumulatedon a workbench in threedays)Suspending dust mg/m3≤0.2Precipitable dust mg/m2·h ≤1.5DescriptionlDust particle diameter ≥ 5 µmlSuspending dust diameter ≤ 75 µml75 µm ≤ precipitable dust diameter ≤ 150 µm Take the following measures to meet the requirements:lUse dustproof materials for ground, wall, and ceiling construction.lUse screens on the door and windows facing outside. The outer windows should be dust-proof.lClean the equipment room regularly and clean the air filter monthly.lWear shoe covers and ESD clothing before entering the equipment room.5.2.1.5 Requirements for Corrosive GasesThe room should be free from dusts and corrosive gases, such as SO2, H2S, and NH3. Table5-17 lists the requirements for the corrosive gas concentration.Table 5-17 Requirements for corrosive gas concentrationChemical activematerial Unit ConcentrationSO2mg/m3≤0.30H2Smg/m3≤0.10NOxmg/m3≤0.50NH3mg/m3≤1.00Cl2mg/m3≤0.10HCl mg/m3≤0.10AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.120
Chemical activematerial Unit ConcentrationHF mg/m3≤0.01O3mg/m3≤0.05 Take the following measures to meet the requirements:lAvoid constructing the room near a place where the corrosive gas concentration is high,such as a chemical plant.lEnsure the air intake vent of the room is in the prevailing upwind direction from anypollution source.lPlace batteries in different rooms.lA professional service should monitor the corrosive gas conditions regularly.5.2.1.6 Requirements for ESD PreventionThe absolute value of electrostatic voltage must be less than 1000 V.Take the following measures to meet this requirement:lTrain operators about ESD prevention.lKeep the correct humidity level in the equipment room to reduce the impact of staticelectricity.lLay out an ESD floor in equipment rooms.lWear ESD shoes and clothing before entering equipment room.lUse ESD tools, such as wrist straps, tweezers, and pullers.lGround all conductive materials in the room, including computer terminals. Use ESDworktables.lKeep non-ESD materials (such as common bags, foam, and rubber) at least 30 cm (11.81in.) away from boards and ESD-sensitive components.5.2.1.7 Electromagnetism Requirements for the Equipment RoomAll interference sources, inside or outside the equipment room, can cause equipment problemswith capacitive coupling, inductive coupling, electromagnetic wave radiation, and commonimpedance (including grounding system) coupling. Prevent the interference using theseapproaches:lTake effective measures against electrical interference from the power supply system.lDo not use the working ground of the equipment as the same ground for surgeprotection. Separate them as far as possible.lKeep the equipment far away from high-power radio transmitters, radar units, and high-frequency and high-current equipment.lUse electromagnetic shielding if necessary.5.2.1.8 Requirements for Lightning Proof GroundingTable 5-18 lists the requirements for lightning proof grounding.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.121
Table 5-18 Requirements for lightning proof groundingItem RequirementsCapitalconstructionlUse reinforced concrete to construct the equipment room.lInstall a lightning proof device like a lightning rod outside the room.lThe lightning proof ground shares the same grounding body withthe protective ground of the room.Power cablesleading in theequipment roomneed to beequipped with asurge protectorlAfter the low-voltage power cables are led into the room, install thesurge protector for the power cables in the AC voltage stabilizer andthe AC power distribution panel (box). Correctly ground the surgeprotector nearby.lFor an equipment room in urban area, install a power supply surgeprotector with the nominal discharge current of no less than 20 kA.For an equipment room that is built in a suburb and subject tolightning strikes, install a power supply surge protector with thenominal discharge current of more than 60 kA. For an equipmentroom that is built in a mountain area and subject to frequentlightning strikes, or in a separate high-rise building in a city, install apower supply surge protector with the nominal discharge current ofmore than 100 kA.lThe ground cable of the surge protector should be no longer than 1m (3.28 ft).Grounding forDC powerdistributionlConnect the DC working ground (positive pole of the -48 V DCpower supply or the negative pole of the 24 V DC power supply)with the indoor collective ground cable nearby. The total groundcable should meet the maximum load of the equipment.lThe power equipment must have a DC working ground cable, whichcan connect the power equipment to the collective ground cable ofthe telecommunication site (or the protective ground bar of theequipment room).EquipotentialconnectionlProperly ground the devices and auxiliary devices in the room suchas mobile base station, transmission, switching equipment, powersupply equipment, and cable distribution frame. Connect all PGNDcables to the collective protective ground bar. Connect all PGNDcables in one equipment room to one protective ground bar.lApply joint grounding to the working ground and protective groundof devices, which means the two share one grounding network.lThe cable tray, rack or shell, metal ventilation pipe, metal door orwindow of the equipment should be grounded for protection.Generalrequirements forgroundinglDo not connect the neutral line of the AC power cable with theprotective ground of any telecom equipment in the equipment room.lDo not install a fuse or switch on the ground cable.lAll ground cables should be as short as possible, and arranged in astraight line.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.122
Item RequirementsGroundingresistancelThe grounding resistance must be lower than 1 ohm.lThe upper end of the grounding body should be at least 0.7 m (2.30ft) over the ground. In cold areas, bury the grounding body belowthe frozen ground.lMeasure the grounding resistance periodically to ensure effectivegrounding.Routing ofsignal cablelDo not arrange the signal cables overhead in the equipment room.All signal cables must be led into the site underground.lUse the cables with a metal jacket or place them into a metal pipe ifthey come out/in the equipment room.lGround the idle lines inside the cable in the equipment room.lSignal cables should be deployed on internal walls. Do not deployoutdoor aerial cables.lKeep signal cables away from power cables and surge protectiondevices.Collectiveground cablelUse a ground ring or ground bar for the collective ground cable.lDo not use aluminum cables as ground cables. Adopt measures toprevent electrification corrosion when connecting different metalparts together.lUse a copper busbar as the collective ground cable with a cross-sectional area of no less than 120 mm2 (0.19 in.2), or use thegalvanized flat steel of the same resistance. Insulate the collectiveground cable from the reinforcing steel bars of the building.Grounding lead-inThe grounding lead-in should be a maximum of 30 m (98.42 ft) long.Use the galvanized flat steel with cross-sectional area of 40 mm x 4mm (1.58 in. x 0.158 in.) or 50 mm x 5 mm (1.97 in. x 0.197 in.). 5.2.2 Requirements for Power Supply5.2.2.1 Requirements for AC Power SupplyAn AC power supply system consists of power mains, uninterruptible power supplies (UPSs),and self-supplied electric generators. In addition to meeting the requirements of the serverload, the AC power supply must have a simple connection line, safe operation, flexiblescheduling, and easy maintenance.The low-voltage power supply should be 3-phase, 5-wire mode or monophase 3-wire mode.This AC power supply should be 110 V/220 V, with a frequency of 50 Hz.The UPS should supply the same power and operate at the same phase as the power mains.The switching time between the UPS and mains should be less than 10 ms; otherwise, thenetworking devices will reboot or reset.For power distribution capacity in the equipment room, both the working current and faultcurrent of the devices should be considered. Ensure that independent AC power suppliesAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.123
protect independent devices. Configure the current-carrying capacity of the protection switchof the equipment room for more than that of the devices.Table 5-19 lists the voltage range of the AC power supply for the devices.Table 5-19 Voltage range of AC power supplyItem RequirementsAC power capacity tosupport the devices-10% to +5% of the rated voltageAC power capacity tosupport the power modulesand important buildings-15% to +10% of the rated voltageFrequency of alternatingcurrent-4% to +4% of the rated valueVoltage wave shape sinedistortionWithin 5% of the rated voltage The automated electric generator must have a standard interface that supportstelecommunication protocols, remote telecommunication, monitoring, and control.AC power cables should meet the following specifications:lAC neutral should have a conductor with the same cross section as the phase line.lAC cables should have non-flammable insulation. The layout of AC cables shouldcomply with local regulations. Low-voltage power distribution rooms should complywith local regulations.5.2.2.2 Recommendations for AC Power SupplyThe following are recommendations for the AC power supply.lIf the voltage of the power mains that supply power directly to devices exceeds the ratedvoltage by -10% to 5%, or exceeds the voltage range that devices can support, a voltageregulating device or voltage stabilizing device is required.lIf the mains do not supply power for the device directly, or if the mains voltage exceedsthe rated voltage by -15% to 10% or exceeds the input voltage range of the DC powersupply, a voltage regulating device or voltage stabilizing device is required.lA UPS or inverter power supply system is required to provide uninterrupted AC powerto support the telecommunication load.lIf abnormalities occur on the mains, telecommunication servers should be equipped witha self-supplied electric generator to support the key telecommunication load. Thecapacity should be not less than 150% to 200% of the total uninterruptible power supply.lStorage batteries are usually installed in a parallel connection of two groups. UPSstorage batteries are generally installed in one group. The redundancy required for theUPS can rely on concatenation or parallel connection. When an inverter or a UPS isused, the active inverter is determined by the maximum power and a backup inverter isrequired.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.124
5.2.2.3 Requirements for DC Power SupplyThe equipment room should receive stable and reliable DC power. Deploy the powerequipment near the telecommunications equipment to make the DC feeder as short aspossible. To reduce power consumption and installation cost, the loop voltage drop from thebattery port to the equipment port should be less than 3.2 V.lA large-scale enterprise can deploy an independent power supply system on each floor tosupply power to the telecommunications equipment room on the respective floor.lA medium-scale enterprise can use a power room and a battery room for centralizedpower supply or use distributed power supply systems.lA small-scale enterprise can deploy an integrated power supply system in its equipmentroom but must take measures to prevent corrosive gases released from batteries fromeroding circuit boards of telecommunications equipment.Table 5-20 lists the specifications for the DC power supply.Table 5-20 Specifications for the DC power supplyItem RequirementsDC powercapacity tosupport the surgecurrentGreater than 1.5 times the rated currentRegulatedvoltage precisionIf the AC input voltage is in the range of 85% to 110% of the ratedvalue, and the load current is in the range of 5% to 100% of the ratedvalue, the output voltage of the rectifier ranges from -46.0 V to -56.4 V,with the regulated voltage precision less than or equal to 1%.Overshootamplitude ofswitch on/offIntegral value of the DC output voltage ±5%Peak noisevoltage≤200 mVDynamicresponseThe recovery time is less than 200 ms. The overshoot is in the range ofthe integral value of the DC output voltage ±5%. 5.2.2.4 Recommendations for DC Power SupplyThe following are recommendations for the DC power supply.lUse distributed power supply mode. Use multiple DC power supply systems and putpower equipment in multiple locations.lAdopt a standard DC power supply system, and set the output voltage to thecommunications equipment within the required range.lImprove reliability of the AC power supply system to reduce the necessary capacity ofstorage batteries. For small offices, increase the capacity of storage batteries if it isdifficult to enhance reliability of the AC power supply system.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.125
lThe total capacity of the high-frequency switching rectifier must satisfy the power of thecommunication loading and battery charging. If there are 10 or fewer active rectifiermodules, configure one backup module. If there are more than 10 active modules,configure one backup module for every 10 active modules.lInstall storage batteries in two or more groups. The capacity is determined by theduration for which the storage batteries must supply power. For most offices, thebatteries should be able to supply power for at least one hour.5.3 Equipment Grounding Specifications5.3.1 General Grounding SpecificationsTable 5-21 shows the general grounding specifications.Table 5-21 General grounding specificationsNo. Description1 The working ground and protective ground, including the shielded ground and thelightning-proof ground of the cable distribution frame should share the samegrounding conductor.2 The cable trays, shells, metal ventilation pipes, metal doors and windows in theequipment room should be grounded for protection.3 The metal parts of the equipment which are electrically floating in normalconditions should be grounded for protection.4 The ground cable must be connected securely to the protective ground bar of theequipment room.5 Do not use other equipment as part of the ground cable or electrical connection. 5.3.2 Grounding Specifications for an Equipment RoomThe grounding resistance of a comprehensive communication building should be less than orequal to one ohm. The grounding resistance of an ordinary communication office should beless than five ohms. The grounding resistance in an area where the earth resistance rate is highshould be less than 10 ohms.5.3.3 Grounding Specifications for DevicesTable 5-22 lists the equipment grounding specifications.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.126
Table 5-22 Equipment Grounding SpecificationsNo. Description1 All communication devices and auxiliary devices (such as mobile base stations,transmission and switching devices, power supply devices) in the equipment roomshould be grounded for protection. Connect all protective ground for variousdevices jointly to a general ground bar, and then to the same protective ground barin the room together with the protective ground (PGND) of the device.2 The PGND of the equipment is shorted to the copper ground bar provided by thecustomer. The short-circuiting cable used should be a yellow-green plasticinsulated cable with a copper core and a cross-sectional area greater than 25 sq.mm (0.039 sq. in.).3 There are grounding terminals and grounding lugs at the lower part of the frontdoor, rear door and side panel of the cabinet, connected to the grounding terminalsof the cabinet framework through connection cables with cross-sectional area of noless than 1.6 sq. mm (0.002 sq. in.).4 Ensure that all metal components of the cabinet conduct well. No insulatingcoating should be sprayed on the connection part of the metal components.5 Connect the cabinets in the same row by fastening captive screws and gaskets onthe top of the cabinets. Do not spray any coating into a rectangular area measuring30 mm x 50 mm (1.18 in. x 1.97 in.) around the connection hole for a captive bolt.Measures to prevent rust and corrosion must be taken for this area. Zincelectroplating with iridescent yellow chromate conversion coating should beapplied to the gasket and nut to ensure good electrical contact.6 When combining cabinets of the same type, short-circuiting cables are required toconnect the ground busbars (if any) of the cabinets. The cross-sectional area of theshort-circuiting cable is 6 sq. mm (0.009 sq. in.) and is no more than 300 mm (11.8in.) long. Connect the two ends of the short-circuiting cable to the ground busbarterminals of neighboring cabinets and fix them firmly. 5.3.4 Grounding Specifications for Communications PowerSupplyTable 5-23 shows the grounding specifications for communication power supplies.Table 5-23 Grounding specifications for communication power suppliesNo. Description1 The inlet for the AC power cable at the equipment room should be equipped with asurge protection device (C-level) with a nominal discharge current no less than 20kA.2 The protective ground for the power supply and that for communication equipmentshare the same grounding conductor. If the power supply and the equipment are inthe same equipment room, use the same protective ground bar for them if possible.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.127
No. Description3 Use a surge protection circuit on the AC power interface.4 The positive of the -48 V DC power supply or negative pole of the 24 V DC powersupply should be grounded at the output of the DC power supply.5 The working ground and protective ground of the DC power supply equipmentshould use the same grounding conductor with the protective ground of theswitching equipment. If the power supply and equipment are in the sameequipment room, use the same protection ground bar for them if possible.6 Add surge protection on the DC power interface. 5.3.5 Grounding Specifications for Signal CablesTable 5-24 lists the grounding specifications for signal cables.Table 5-24 Grounding specifications for signal cablesNo. Description1 Equip the cable outdoors with a metal jacket, well grounded at both ends, orconnect the ends of the metal jacket to the protective ground bar of the equipmentroom. For cables inside the equipment room, install surge protection devices at theinterface to the equipment. The PGND cable for the surge protection devicesshould be as short as possible.2 The incoming and outgoing signal cables to and from the office and unused wiresinside the cable should be grounded for protection.3 The Tone & Data Access (TDA) cable must pass through the Main DistributionFrame (MDF) with surge protective device (SPD) when going out of the office.The cable's shield layer should be connected to the protective ground of the MDF.The MDF should use the same grounding conductor as the cabinet.4 Do not route signal cables overhead. 5.3.6 Specifications for Laying Out Grounding CablesTable 5-25 shows the specifications for the ground cable.Table 5-25 Specifications for laying out ground cablesNo. Description1 The grounding wire should not run parallel to or twist around the signal cable.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.128
No. Description2 Bury ground underground or arrange them indoors. Do not route ground cablesoverhead.3 Do not connect two cables together to extend the PGND cable, or add any switchesor fuses.4 The PGND cable should be an alternating yellow and green plastic insulated onewith a copper core.5 The neutral line of the AC power cable cannot be connected to the protectiveground of transmission and communication equipment in the equipment room.6 A PGND cable should be as short as possible, with a length of no more than 45 m(147.64 ft). 5.4 Engineering Labels for CablesAn engineering label serves as an identifier for on-site installation and maintenance after theinstallation. Labels on the cables facilitate correct and orderly connection of cables, and easymaintenance after installation.Engineering labels are specialized for power cables and signal cables:lSignal cables include network cables, optical fibers, and user cables.lPower cables include the AC power cables and DC power cables.NOTEFill in labels according to specified requirements to keep consistency of labels in the equipment room.Make a relevant statement in the self-check report.5.4.1 Introduction to Labels5.4.1.1 Label MaterialsFeatures:lThickness: 0.09 mm (0.004 in.)lColor: chalk whitelMaterial: polyester (PET)lAmbient temperature: -29°C (-20.2°F) to +149°C (300.2°F)lPrinted by a laser printer and written with a markerlPass UL and CSA authenticationAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.129
5.4.1.2 Type and StructureLabel for Signal CablesThe label for signal cables is L-shaped with fixed dimensions, as shown in Figure 5-154.Figure 5-154 Label for signal cables To specify more clearly the position of a cable, use the dividing lines on the label. Forexample, there is a dividing line between the cabinet number and the chassis number, andanother one between the chassis number and the slot number. Each dividing line is light blue(Pantone 656c) and 1.5 mm x 0.6 mm (0.06 in. x 0.02 in.).The cut dotted line helps to fold the label when affixed to the cable, and its size is 1 mm x 2mm (0.04 in. x 0.08 in.).The word "TO:" (upside down in the figure) at the lower right corner of the label is used toidentify the opposite end of the cable on which the label is affixed.Power Cable LabelThe label for power cables should be attached to the identification plate on the cable ties thatare attached to the cable. The identification plate has an embossed area 0.2 mm x 0.6 mm(0.008 in. x 0.02 in.) around (symmetric on both sides), and the area in the middle is foraffixing the label, as shown in Figure 5-155.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.130
Figure 5-155 Power cable label 5.4.1.3 Label PrintingThe contents can be printed or written on the labels. Printing is recommended for the sake ofhigh efficiency and eye-pleasant layout.Template for PrintingYou can obtain a template from the Huawei local office to print labels.The template is made in Microsoft Word. Follow these instructions to use the template:lYou can modify the contents of the template. Do not change settings of centeredcharacters, direction, and fonts.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.131
lIf many characters need to be filled in, decrease the font size, but make sure that theprintouts are clear and legible.Merging Cells in the TemplateTo merge two or more cells, do as follows:1. Select Edit/Select All.2. Select Format/Borders and Shading/Borders. Select Box tab and click OK.3. Drag the mouse to select cells to be merged and select the Table/Merge Cells.Requirements on the PrinterTo print labels, use a laser jet printer of any model. Before printing labels, set up the page andtry printing.1. Try printing on ordinary paper with both sides blank. Place the blank paper over thewhole page of the label paper, and check whether the page setup conforms to the labellayout.2. Make sure the printer properties, such as "paper size" and "direction", have been setcorrectly.–If the printout conforms to the sheet of labels, print the labels on the label paper.–If the printout does not conform, adjust the page setup and try printing again untilthe correct printout is produced.The method for adjusting the page setup is as follows.1. Select File/Page Setup.2. Select Layout and set Header and Footer as 0.3. Select the Margins tab page. Select Left for Gutter Position and adjust the values of Top,Bottom, Left, and Right.NOTEIf the warning prompt as shown in Figure 5-156 appears before printing, click Ignore to continuethe printing.Figure 5-156 Warning prompt before printing After the page setup has been made correctly, save it for future use. This page setup is onlynecessary the first time you use the template to print the labels.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.132
Requirements for Feeding the PrinterThe label paper consists of two layers and has undergone multiple processing procedures suchas printing and cutting. No matter what model of printer you use, feed in the labels one pageat a time. To avoid jamming the labels, never use the auto-feed mode.Feed in the label paper in the correct direction to ensure that the text is printed in a correctposition.Requirements for the Printed LabelMake sure that the printed labels satisfy the following requirements:lAll the printouts must be on the label, and nothing should be printed on the backing layerof the label page.lContents in the cells should be aligned in the center. In a single-line printout, thedividing lines and the word "TO:" should not be covered by printed characters.lWhen the cells are merged and the printouts are made in multiple lines, avoid coveringthe word "TO:" when printing the text. Use the space bar to move the text to the nextline.5.4.1.4 Writing LabelsWriting ToolsTo make sure the printouts are clear and legible, use black markers instead of ball-point pensto write the labels.If no marker is available, black ball-point pens are allowed, although not recommended.Compared with ball-point pens, waterproof markers are better. When writing with a ball-pointpen, do not leave the oil on the label, which may contaminate the label and blur the words.NOTEThe delivered marker has two nibs. Use the smaller nib to write the labels.FontFor the sake of legibility, use standard block letters and numbers as shown in Table 5-26(Times New Roman).Table 5-26 Standard typeface for handwriting0123456789 A B C D E F G HI J K L M N O P QR S T U V W X Y Z Determine the size of characters based on the number of letters or digits and ensure that thecharacters are distinct and tidy.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.133
Placement of text on a label is shown in Figure 5-157.Figure 5-157 Placement of text on a label 5.4.1.5 Attaching LabelsAfter printing or writing the label, remove the label from the page and attach it to the signalcable, or the identification plate of the power cable. The methods for attaching labels aredescribed in the following sections.Label for Signal CableslChoose the place to attach labels.The label is attached 2 cm (0.79 in.) from the connector on a signal cable. In specialcases (for example, to avoid cable bending or affecting other cables), other positions areallowed to attach the labels. The rectangular part with text is attached facing right ordownward, as shown in Figure 5-158. The details are as follows:–The identification card is to the right of the cable in vertical cabling.–The identification card should be downward when you lay out the cablehorizontally.Figure 5-158 Text area of the label lProcedure for attaching labelsFigure 5-159 shows the methods and procedures for attaching labels.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.134
Figure 5-159 Label for signal cables Power Cable LabelRemove the label from the backing page, and attach it to the identification plate on the cabletie. The label should be attached to the rectangular flute on the identification plate, andattached to only one side of the identification plate. The cable ties are bundled at 2 cm (0.79in.) from the connectors, and other positions are allowed in special circumstances.Cable ties should be bound on both ends of a cable. After the bundling, the finishedidentification plate should be on top of the cable in horizontal cabling, or on the right side ofthe cable in vertical cabling, as shown in Figure 5-160. The details are as follows:lThe identification card is to the right of the cable in vertical cabling.lThe identification card is on the top of the cable in horizontal cabling. Make sure that thelabel is facing out.Figure 5-160 Binding the label for the power cableThe identification card is on the top of the cable in horizontal cabling. The identification card is to the right of the cable in vertical cabling. TO:B03 -48V2TO:B03 -48V2CableCableAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.135
5.4.1.6 Contents of Engineering LabelsContents of Labels for Power CablesLabels for power cables are affixed on only one side of the identification plates. On the labels,there is information (the part after the word "TO:") about the location of the device on theother end of the cable, like the location of control cabinet, distribution box or power socket.Contents of Labels for Signal CablesThe two sides of the label affixed on the signal cable carry information about the location ofthe ports connected to both ends of the cable. Figure 5-161 shows the information on bothsides of the labels affixed to the signal cables.lArea 1 contains the location information of the local end of the cable.lArea 2 (with the word "TO:") contains the location information of the opposite end of thecable.lArea 3 has been folded up inside the label.Figure 5-161 Printed parts on the label for signal cables Seen from the cabling end of the equipment, the text part of the label is on the right side of thecable. The side with "TO:" that is facing outside carries the location information of theopposite end; and the other side carries the location information of the local end.In other words, the information in Area 1 at one end is the same as the information in Area 2at the other end of the cable.5.4.1.7 Precautions for Using Engineering LabelsWhen using labels, pay attention to the following points:lWhen printing, writing, or attaching labels, keep the labels clean.lSince the label paper is made of moistureproof material, ink-jet printers and ink penscannot be used to print and write labels.lLabels should be attached neatly. New-type labels are L-shaped. If they are pasted atincorrect locations or in the incorrect direction, the appearance of the device is affected.lPower cable ties should be attached in the same positions on power cables, withidentification plates on the same side.lThe positions of "up", "down", "left" or "right" are all based on the viewpoint of theengineering person who is working on the label.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.136
5.4.2 Engineering Labels for Optical FibersThese labels are affixed to the optical fibers that connect the optical interfaces on the boardsin a chassis, or on the device boxes. There are two types of labels for optical cables:lOne is for the fiber that connects the optical interfaces on two devices.lThe other is for the fiber that connects the device and the ODF.5.4.2.1 Labels for the Optical Fibers Connecting DevicesMeaning of the LabelTable 5-27 lists information on both sides of the labels affixed to the optical fibers thatconnect two devices.Table 5-27 Information on labels affixed to the fibers between two devicesContent Meaning ExampleMN-B-C-D-R/TMN: cabinetnumberM: The cabinet rows from front to back are numberedfrom A to Z.N: The cabinet columns from left to right are numberedfrom 01 to 99.For example, A01 is the cabinet in row A and column01.B: chassisnumberNumbered in bottom-up order with two digits, forexample, 01.C: physical slotnumberNumbered in top-down and left-right order startingfrom 01. For example, 01 is the first slot at the top leftof the chassis.D: opticalinterfacenumber.Numbered in top-down and left-right order, consistentwith the port sequence number on the device.R: ReceivinginterfaceT: opticaltransmittinginterface- Example of the LabelFigure 5-162 shows a sample label on an optical fiber.Figure 5-162 Sample label on an optical fiber between two devicesA01 RTO:01 05 01G01 T01 01 01AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.137
The meaning of the label is listed in Figure 5-162.l"A01-01-05-01-R" indicates that the local end of the optical fiber is connected to theoptical receiving interface 01 in slot 5, chassis 01 in the cabinet in row A, column 01 inthe machine room.l"G01-01-01-01-T" indicates that the opposite end of the optical fiber is connected withoptical transmitting interface 01 in slot 01, chassis 01 in the cabinet in row G, column 01in the machine room.5.4.2.2 Labels for the Optical Fibers Connecting the Device and an ODFMeaning of the LabelsTable 5-28 shows information on both sides of labels attached to an optical fiber between adevice and an optical distribution frame (ODF).Table 5-28 Information on labels affixed to a fiber between a device and an ODFContent Meaning ExampleMN-B-C-D-R/TMN: cabinetnumberFor example, A01.B: chassisnumberNumbered in bottom-up order with two digits, forexample, 01.C: physical slotnumberNumbered in top-down and left-right order startingfrom 01. For example, 01 is the first slot at the top leftof the chassis.D: opticalinterfacenumber.Numbered in top-down and left-right order, consistentwith the port sequence number on the device.R: OpticalreceivinginterfaceT: opticaltransmittinginterface-ODF-MN-B-C-R/TMN: rownumber andcolumn numberof an ODFM: The cabinet rows from front to back are numberedfrom A to Z.N: The cabinet columns from left to right arenumbered from 01 to 99.For example, G01 is the ODF of row G and column01.B: row numberof the terminaldeviceRange from 01 to 99, for example, 01-01.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.138
Content Meaning ExampleC: columnnumber of theterminal deviceR: OpticalreceivinginterfaceT: opticaltransmittinginterface- Example of the LabelFigure 5-163 shows a sample label on an optical fiber.Figure 5-163 Sample label on an optical fiber between the device and the ODFODF RTO:G01 01 01A01 R01 05 01 Meaning of the label in Figure 5-163l"ODF-G01-01-01-R" indicates that the local end of the optical fiber is connected to theoptical receiving terminal in row 01, column 01 of the ODF in row G, column 01 in themachine room.l"A01-01-05-01-R" indicates that the opposite end of the optical fiber is connected tooptical receiving interface 1 in slot 05, chassis 01 in the cabinet in row A, column 01 inthe machine room.5.4.3 Engineering Labels for Network CablesApplicable RangesThe labels can be applied to Ethernet cables.Label ContentTable 5-29 shows the information on both sides of the labels affixed to Ethernet cables.You can also decide the label content based on the actual environment. If the device is notinstalled in the cabinet, for example, you can remove the cabinet number.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.139
Table 5-29 Information on the Ethernet cablesContent Meaning ExampleMN-B-C-D MN: cabinetnumberFor example, A01 is the first cabinet in row A.B: chassisnumberNumbered in bottom-up order with two digits, forexample, 01.C: physical slotnumberNumbered with two digits in top-down and left-right order. For example, 01.D: network portnumberNumbered in top-down and left-right orders. Forexample, 01.MN-Z MN: cabinetnumberFor example, B02 is the second cabinet in row B.Z: LocationnumberFill in the location number of the terminal deviceon site. If the cable is connected to a device in acabinet, specify the serial numbers of the cabinet,the chassis, and the Ethernet interface of the device.For example, B02-03-12. If the cable is connectedto the Network Management Station (NMS),specify the specific location of the NMS. The contents of the labels for network cables connecting hubs and devices or agents and thenetwork cables for other purposes should be specified according to actual connections. Thedetails are as follows:lFor a network cable connecting a hub and device, the label on the hub end shouldindicate the numbers of the chassis and cabinet where the hub resides, and the serialnumber on the hub. The label on the device end should indicate the number of thechassis and cabinet where the device is located. If the device is a standalone device,provide the specific position of the device.lFor a network cable connecting a hub and an agent or terminal, the label on the agent orterminal end should contain the serial number of the network interface. The definitionsof the cabinet number and chassis number are the same as those described in Table 5-29.lIf the hub is a standalone device without a cabinet or chassis, the label should containspecific location information that identifies the hub.The serial number on the hub, the network interface number of the agent or terminal, and thelocation of the standalone device should be specified according to actual connections.Label ExampleFigure 5-164 shows a sample label on an Ethernet cable.Figure 5-164 Sample label on an Ethernet cableA01TO:03 01 01B02 03 01AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.140
Meaning of the label in Figure 5-164.l"A01-03-01-01" indicates that one end of the network cable is connected to networkinterface 01 in slot 01, chassis 03 of the cabinet in row A, column 01 in the equipmentroom.l"B02-03-01" indicates that another end of the network cable is connected to networkinterface 01 in chassis 03 of the cabinet on row B, column 02 in the equipment room. Noslot number is given.5.4.4 Engineering Labels for User CablesAttach labels to both ends of a user cable to indicate the locations of the cable on the deviceand main distribution frame (MDF).Meaning of the Engineering Labels for User CablesTable 5-30 shows the contents of the labels.Table 5-30 Contents of the engineering labels for user cablesContent Meaning ExampleMN-B-C-D MN: cabinetnumberFor example, A01 is the first cabinet in row A.B: frame number Numbered in the bottom-up order with two digits,for example, 03.C: physical slotnumberNumbered with two digits in top-down and left-right order. For example, 01.D: cable number Numbered with two digits in top-down and left-right order. For example, 01.MDF-MN-B-C MN: row numberand columnnumber of theMDFM: The rows of cabinets from front to back arenumbered from A to Z. N: The columns of cabinetsfrom left to right are numbered from 01 to 99. Forexample, G01 is the MDF of Row G and Column01.B: row number ofthe terminaldeviceRanges from 01 to 99, for example, 01-01.C: column numberof the terminaldevice Example of the LabelFigure 5-165 shows a sample label on a user cable.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.141
Figure 5-165 Sample label on a user cableA01TO:03 01 01MDF G01 01 01 The meaning of the label in Figure 5-165 is as follows:l"A01-03-01-01" indicates that the local end of the user cable is connected to port 1 inslot 1, chassis 03 of the cabinet in row A, column 01 in the equipment room.l"MDF-G01-01-01" indicates that the opposite end of the user cable is connected to theterminal in row 01, column 01 of the MDF in row G, column 01 in the equipment room.5.4.5 Engineering Labels for Power Cables5.4.5.1 Engineering Labels for DC Power CablesThese labels are affixed to the DC power cables that provide power supply for cabinets,including the -48 V, PGND, and BGND cables. Here, the DC power cables also include powercables and PGND cables.The labels for DC power cables are affixed to one side of the identification plates on cableties. For details of the labels, see Table 5-31.Table 5-31 Contents of the labelContent MeaningMN(BC)-B--48VnMN(BC): BC is written right under MN.B: chassis number, numbered in bottom-up order with two digits, forexample, 01.N: power socket number, numbered as 1 to 3 in the bottom-up and left-to-right orders.On the loaded cabinet side, only MN is used to identify the cabinet.On the power cabinet side, MN identifies the row and column numberof the power distribution equipment like a control cabinet anddistribution box, and BC identifies the row and column number of the-48 V connector. If there is no row number or column number, or theconnector can be identified without them, BC can be omitted. It isunnecessary to identify the row and column number for BGND andPGND.MN(BC)-B-BGNDMN(BC)-B-PGND The label only carries location information about the destination direction of the power cablewhereas information about the local end is unnecessary. That is, the label only carries locationinformation about the opposite equipment, the control cabinet, or the distribution box. TableAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.142
5-31 lists the information on two -48 V power supplies on the label. The information on otherDC voltages, such as 24 V and 60 V should be given in similar methods.Make sure that labels are affixed in the correct direction. That is, after the cable ties arebundled onto the cable, the identification plates with the labels should face up, and the text onthe labels in the same cabinet should be in the same direction. For details, see Figure 5-166.Figure 5-166 Example of the labels for DC power cables The meaning of the label in Figure 5-166 is as follows:lOn the loaded cabinet side, the label "A01/B08--48V2" on the cable indicates that thecable is -48 V DC supply, which is from the eighth connector in row B of -48 V bus barin the cabinet in row A, and column 1 in the equipment room.lOn the distribution box side, the label "B03--48V2" indicates that the cable is -48 V DCsupply, connected to DC power socket 2 in row B, column 03 in the equipment room.NOTEIn the power distribution box or the first power cabinet of a row in a transmission equipment room,every terminal block on the -48 V connector bar has a numeric identification. For example, in the abovelabel of "A01/B08--48V2", "08" (or sometimes "8") is the numeric identification of the terminal block.PGND and BGND are two copper bars, on which the terminal blocks are short-circuited.Therefore, it makes no difference which terminal is connected to them. It is only necessary togive the row and column of the power distribution box, instead of giving the specific serialnumber of the terminal block on the copper bar. For example, if the label on the loadedcabinet side is "A01-BGND", it means that the power cable is a BGND that connects BGNDcopper bar in the power distribution box in row A, column 01 in the machine room.Information on the labels for PGND cables should be given in a similar way.5.4.5.2 Engineering Labels for AC Power CablesThese labels are affixed to both ends of an AC power cable that provides AC power supply tocabinets, including 110/220 V, PGND, and BGND cables. The 110/220 V AC cables andrelated PGND and BGND cables are covered with an insulating sheath, so the labels need tocontain only the word "AC" and the cabinet numbers.The labels for AC power cables are affixed to one side of the identification plates on cableties. For details, see Table 5-32.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.143
Table 5-32 Label contentContent MeaningMN-(B)-ACn MN: serial number of the cabinet or the socket where the power is ledinB: chassis number, numbered in bottom-up order with two digits, forexample, 01.n: power port number, numbered as 1 to 3 in bottom-up and left-to-rightorder.Serial number of the socket where the power is led in: the location ofthe socket is marked according to the actual situation. If the sockets canbe identified by row numbers and column numbers, they can benumbered following the same rule for the cabinets. If the socketscannot be identified by rows and columns, specify the detailedlocations to avoid confusion with other sockets. The label only carries location information about the opposite equipment and the powersocket; information about the local end is unnecessary.Make sure that labels are affixed in the correct direction. That is, after the cable ties arebundled onto the cable, the identification plates with the labels should face up, and the text onthe labels in the same cabinet should be in the same direction, as shown in Figure 5-167.Figure 5-167 Labels for AC power cablesLabel on the loaded cabinet side(indicating the position of the cableon the power distribution box)Label on the distribution box side(indicating the position of the cableon the loaded cabinet side) Meaning of the label in Figure 5-167.lOn the equipment cabinet side, the label marked "A01-AC1" indicates that the powercable is connected to the first AC power socket of row A and column 01 in theequipment room.lOn the power socket side, the label marked "B01-AC1" indicates that the power cable isconnected to the first AC power socket in the cabinet of row B and column 01 in theequipment room.5.5 Guide to Using Optical ModulesAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.144
Common Faults of an Optical ModuleNOTEThe system may fail to obtain information about non-Huawei-certified optical modules or obtain incorrectinformation. You are advised to use Huawei-certified optical modules. Obtain the electronic label of theoptical module and contact technical support personnel to confirm whether it is a Huawei-certified opticalmodule.1. An optical module is not completely installed in position.If the optical module is not completely installed in position and the latch boss is notsecured, the device cannot identify the optical module. After the optical module worksfor a long time, it will be ejected under external stress.2. The optical receptacle on an optical module is contaminated.If an optical module is not cleaned or protected properly, contaminants may accumulateon the fiber pin in the optical module. As a result, the coupling efficiency is reduced,optical signals are cut off, or even worse, the surface of the fiber pin is damagedpermanently.3. An optical module is burnt.If high-power optical signals (caused by an optical time domain reflectometer or self-loop test) are transmitted through an optical module that is used for long-distancetransmission but no optical attenuator is used, the optical power will exceed the overloadpower of the avalanche photodiode (APD). Then the optical module is burnt.The preceding faults lead to temporary or long-term cut-off of optical signals; or even causepermanent damages to the optical module, affecting communication services.Measures to Prevent a Loosened Optical Module1. When installing an optical module, insert it in position. If you hear a click or feel a slightshake, it indicates that the latch boss is secured.If the latch boss is not secured, the gold finger of the optical module is not in goodcontact with the connector on the board. In this case, the link may be connected butoptical signals will be cut off or the optical module will be loosened when the opticalmodule is shaken or hit.2. Figure 5-168 shows the release handle on an optical module when it is open and closed.When inserting the optical module, make sure that the release handle is closed. At thistime, the latch boss locks the optical module. After the optical module is inserted, trypulling it out to see if it is installed in position. If the optical module cannot be pulledout, it is secured.Figure 5-168 State of the release handle Close the release handle Open the release handleAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.145
Measures to Prevent Receptacle Contamination1. Cleaning tissues must be prepared on site. You need to clean the optical connector beforeinserting it in the receptacle. This protects the receptacle against contamination on thesurface of the optical connector.Figure 5-169 Cleaning optical fibers with special cleaning tissuesNOTEPlace at least three cleaning tissues on the work bench. As shown in Figure 5-169, wipe the end ofan optical connector from left to right or from right to left on a cleaning tissue, and then move theconnector end to the unused part of the cleaning tissue to continue.2. Cover an unused optical module with a protective cap to prevent dust, as shown inFigure 5-170.Figure 5-170 Installing a protective cap If no protective cap is available, use fibers to protect the optical module, as shown inFigure 5-171.Figure 5-171 Using fibers to protect an optical module 3. Cover unused optical connectors with protective caps, as shown in Figure 5-172, andthen lay out fibers on the fiber rack or coil them in a fiber management tray to preventfibers from being squeezed.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.146
Figure 5-172 Installing a protective cap on a fiber 4. If a receptacle or an optical connector has not been used for a long time and is notcovered with a protective cap, you need to clean it before using it. Clean a receptaclewith a cotton swab, as shown in Figure 5-173. Clean an optical connector with cleaningtissues.Figure 5-173 Cleaning a receptacle with a cotton swab NOTICEWhen cleaning a receptacle, insert the cotton swab and turn it slowly in the receptacle.Do not use too much strength because the receptacle may be damaged.5. If optical signals are lost during the operation of a device, use the preceding method toclean the receptacle or the optical connector. In this manner, the possibility ofcontamination can be excluded.Measures to Prevent an Optical Module from Being Burnt1. Before using an optical time-domain reflectometer (OTDR) to test the connectivity or theattenuation of optical signals, disconnect the optical fibers from the optical module.Otherwise, the optical module will be burnt.2. When performing a self-loop test, use an optical attenuator. Do not loosen the opticalconnector instead of the optical attenuator.Precautions1. The optical connector should be vertically inserted in the receptacle to avoid damages tothe receptacle.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.147
2. Fibers must be inserted into optical modules of the corresponding type. That is,multimode fibers must be inserted into multimode optical modules, and single modefibers must be inserted into single mode optical modules. If a fiber is inserted into anoptical module of a different mode, faults may occur. For example, optical signals willbe lost.5.6 Fault Tag*Customer name:Address:Contact person:Tel.: Fax:Category*: □ RMA □ Return □ AnalysisBOMCodeProductDescriptionBarCode*FaultOccurringDate*Descriptionof the FaultPhenomena*CategoryNo.*SoftwareVersion* Reasons for Repairing (Category No.):Category No. includes the following eight types:F001 - Wear out damaged (◊ In warranty Period ◊ Out of warranty period)F002 - Deployment damagedF003 - Intransit damagedF004 - Version upgradeF005 - Batch replaceF007 - Overdue spare parts inspectingF008 - OthersF011 - Running circumstance changeAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.148
Note:lFor optical interface cards returned, the optical interfaces should be covered withprotection caps.lIn general, the analysis card will not be returned to you. If you have any specialrequirements, please contact Huawei.lOne Fault Tag should be adapted in one return category, such as RMA/Return/Analysis.lThe items marked with "*" are the mandatory fields that you must fill in. 5.7 Installation ChecklistComponentNo.ApplicableScopeCheck ItemAC 1Independent ACThe air vent of the device is free from blockage to ensurenormal heat dissipation.2Independent ACThe power modules are securely installed with their captivescrews tightly fixed.3Independent ACFour rubber pads are attached to specified positions on thebottom of the AC before it is placed on a desk.4Independent ACThe AC is secured in the cabinet or rack by rack-mountingbrackets or guide rails (or trays), and floating nuts arecorrectly secured.5 AC cardThe AC card is secured in the cabinet or rack by guide railsor trays, and the guide rails or trays and floating nuts arecorrectly secured.6 AC card The AC card is correctly inserted into the device slot andsecured using the ejector lever.7 AC card No pins on the backplane are bent when the AC card isinstalled.8Independent ACThe AC is grounded using a ground cable, meeting surgeprotection requirements.9Independent ACWhen the AC directly connects to APs, location IDs of theAPs are provided at the cable connection points.PoEpowersupply1 General The proper PoE switch or power adapter is selected, meetingAP power supply and onsite environment requirements.2 GeneralTo ensure that the PoE power meets requirements, the PoEpower supply device and APs must be connected throughCAT5E and CAT6E network cables, and the cable lengthcannot exceed 100 m.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.149
ComponentNo.ApplicableScopeCheck Item3 General Labels must be made for the PoE power cable to identify APlocations.4 General Leave a 20 cm space between PoE power adapters to ensurenormal heat dissipation.5 General The PoE switch is correctly grounded with the ground cable.6 GeneralReserve a few downlink network interfaces for the PoEswitch (for example, connect at most 20 APs to a 24-portswitch) for future capacity expansion.7 GeneralYou are advised to configure dual power modules for a PoEswitch for power redundancy backup and providing powerfor more APs.AP1 GeneralThe AP installation positions comply with the networkplanning report and APs cannot be installed in environmentswith strong electrical or magnetic interference or corrosivematerials. If the onsite environment does not meetrequirements, adjust the AP installation positions properly.2 General The devices are installed correctly, securely, withoutdamages or paint peeling. Screws are tightened.3 GeneralLeave at least 20 cm space at the cable outlet and top(convex) of the AP to facilitate commissioning, maintenance,and heat dissipation. APs that dissipate heat from the rearmust be fixed using mounting brackets in wall mountingscenarios. Ensure that there is a certain space between theAPs and wall to facilitate heat dissipation.4 GeneralAPs with built-in antennas should be installed in open areasand there should be no obvious obstruction in the coveragedirection of the main lobe. The main lobe of built-in antennasfaces the top (convex).5 General The APs and antennas are neatly installed, without affectingthe overall layout of the environment.6IndoorAPIndoor APs are placed far away from windows and in dryenvironments with little dust and good ventilation. Thereshould be no inflammable materials in rooms. The indoortemperature and humidity must be within acceptable ranges.7IndoorAPWhen being mounted to a ceiling, the APs must be fixedusing the matching mounting brackets. The APs cannot behung in the air or placed directly on the ceiling. When theAPs are mounted to a wall, the bottom of the APs should beat least 30 mm from the ground. The APs should be installedin places out of reach of people.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.150
ComponentNo.ApplicableScopeCheck Item8OutdoorAPWhen two or more APs are installed in the same area, theymust be installed in the same vertical or horizontal line withcertain spacing greater than 15 mm.9 GeneralDustproof, waterproof, and anti-theft measures are taken andthe devices are kept clean. The APs are secured using thesecurity locks (separately purchased) based on onsitesituations and customer requirements. If APs are placed in anetwork box, ensure that the box is well-ventilated, clean,and dustless, and the ventilation holes are not blocked.10 IndoorAPIndoor APs should be mounted on walls with network portsdownwards to prevent device damages caused by water dropsor other liquid. Install the device in a site that is free fromleaking or dripping water, heavy dew, and humidity, and takeprotective measures to prevent water from flowing into theequipment along the cable.11 OutdoorAPWhen an outdoor AP is installed against a wall or pole, keepthe indicator downwards for easy observation.12 GeneralUse waterproof labels to mark the registration names of APson the AC, as well as their channels and IP addresses. Thelables should be attached to the front of the APs for easyobservation.13 GeneralRecord AP installation positions, MAC addresses, interfacesof uplink PoE switches, and IP addresses (APs use fixed IPaddresses) into a table.14 IndoorAPThe devices required during indoor AP installation, such asthe splitter, coupler, and antennas are operated in accordancewith specifications.15 General The APs using a metal shell (with a ground point) must beproperly grounded.16 OutdoorAP Unused radio ports should be installed with 50 Ω RF loads.17 OutdoorAPTake lightning protection measures on outdoor APs (theoutdoor APs have built-in 5 kV surge protectors. Ifcustomers require a higher surge protection capability on thefeeder ports, they can purchase additional surge protectivedevices, which need to be separately grounded). The APsshould be located in the protection scope (within a 45-degreeangle) of a lightning rod.18 OutdoorAPWhen an AP is mounted to a pole, the distance between theAP and the top of pole should be at least 30 cm.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.151
ComponentNo.ApplicableScopeCheck ItemSignalcable 1 GeneralRoutes of signal cables comply with the engineering designdocument. The signal cables are correctly connected tofacilitate maintenance and capacity expansion.2 General Radio ports of an AP are correctly connected to radio portsA/B/C of antennas.3 GeneralSignal cable connectors are correctly installed and securelyconnected to the device. Wires of each signal cable aresecurely cramped in the connectors and pass connectivitytests.4 GeneralSignal cables are orderly routed and not crossed, twisted, orwinded (cables can be crossed at 1 m out of the cabinet). Thebend radius of cables meets requirements, and the cables arenot excessively bent.5 GeneralSignal cables are not damaged or broken and have no splices.Sufficient cable length is reserved. The reserved cables aretwined and placed properly to facilitate subsequentmaintenance.6IndoorAPThe optical, power, network, and feeder cables are bundledusing straps (one strap every 0.5 m) and securely fastened.7OutdoorAPThe signal cables shall be bundled at even intervals (about1000 mm), not too tight or too loose. The cables shall bebundled properly with cable ties placed in neat order. Cut offredundant cable ties and remove burrs from them to avoidinjuries. The cables shall be fixed using fasteners or ageing-resistant outdoor metal binding straps.8 GeneralKeep the signal cables away from heat sources and use heatinsulation materials to insulate the cables from the heatsources. Do not place signal cables on the air vents of thecabinet to avoid affecting subrack heat dissipation or cablelifetime.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.152
ComponentNo.ApplicableScopeCheck Item9 GeneralPigtail layout should meet the following requirements:lPigtails are not strained or twisted at the bent parts. Theyare bundled by binding tape with appropriate force.lPigtails can be pulled back and forth easily inside thecable tie and are not bent at a right angle.lPigtails are not squeezed by other cables or objects.lThe flange must be fixed.lPigtails are protected with protective tubes or envelopedin troughs when they are routed outside the cabinet. Theprotective tubes are bundled and processed to preventcutting.lThe optical fiber cannot be folded or twisted, and thepigtail cannot be squeezed. The binding diameter of anoptical fiber must be larger than 6 cm.lThe pigtail connection points must be clean and dustless.Fiber connectors and optical ports that are not used mustbe protected with protective caps or plugs. Cleaning mustbe carried out in strict accordance with Huawei toolspecifications.10 General The feeder cables shall not be bent or twisted, with no copperwire exposed.11 General The feeder cable connectors comply with correspondingstandards and are correctly connected, without looseness.12 GeneralThe feeder cables, power splitter, coupler, and surgeprotective devices are connected correctly and reliably inaccordance with specifications.13 GeneralStrong current and weak current cables are routed separately.The power cables, ground cables, and signal cables arebundled and routed separately (with a spacing of more than30 mm) to prevent electrical or magnetic interference. Useshielded cables in places with strong interference.14 GeneralWhen routing cables in walls, place the cables in the cabletroughs or pipes and fix the cables using pipe straps. For non-metal corrugated pipes, the fixing distance should be about1000 mm.15 OutdoorAPAll outdoor connectors or feeder cable connectors areproperly sealed to prevent water. Wrap the cable using one-layer PVC insulation tape, three-layer waterproof tape, andthen three-layer PVC insulation tape. The tape shall beattached evenly and neatly. The network cables shall becovered with waterproof PG tubes.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.153
ComponentNo.ApplicableScopeCheck Item16 OutdoorAPCable connectors are secured on cables and sealed to preventwater intrusion. The outlets of cable conduits on a wall aresealed by waterproof and flame-retardant materials. Driploops meeting the minimum bending radius requirement aremade on the network cable segment that stretches indoor.17 OutdoorAP Do not deploy cables overhead between two buildings.18 GeneralWaterproof labels (providing device names and cabledirections) are filled and attached to signal cables correctly.Each label is attached 20 mm to 100 mm from thecorresponding cable connector.19 OutdoorAPSurge protection measures are taken in the places where theoutdoor APs are installed. The outdoor APs, antennas, andsignal cables are deployed within 45-degree protection areaof a lightning rod.20 OutdoorAPThe bare wires of network and feeder cables should becovered by the winding pipes, flexible metal conduit, PVCpipes, or galvanization pipes. The cable outlet and inlet aresealed to prevent dusts.Antenna 1 GeneralThe installation positions of antennas should comply with theengineering design and antennas should be securely andreliably installed.2 GeneralThere should be no obstacles in the major coverage directionof antennas. The direction and downlink tilt of antennasshould be adjusted based on the coverage targets.3 General There should not be metal subjects within 1 m around anoutdoor omnidirectional antenna.4 General The azimuth deviation of a directional antenna should bewithin 5 degrees and the tilt deviation within 0.5 degree.5OutdoorantennaThe antennas are fixed using special support that supportsinstallation of surge protection devices and shall be locatedwithin a 45 degree protection angle of a lightning rod. Whenan antenna is mounted to a pole, the distance between theantenna and top of the pole should be at least 30 cm.6OutdoorantennaTake waterproof measures on connectors of the antennas andfeeder cables and keep the drain holes of antennasdownwards.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.154
ComponentNo.ApplicableScopeCheck Item7OutdoorantennaThe pole used in antenna mounting should meet thefollowing requirements:Pole height: ≥ 2000 mmBottom pole diameter: ≥ 220 mmTop pole diameter: ≥ 120 mmPole thickness: ≥ 6 mmDepth of foundation: ≥ 1500 mmThe pole deployed outdoors must be reinforced with hot-dipzinc to prevent water corrosion and rust.8OutdoorantennaIt is recommended that at most three APs or antennas bemounted to the same pole. The APs or antennas mounted tothe same pole should meet the following requirements:lThe vertical distance should be at least 3.5 m betweenadjacent 2.4G antennas and 2 m between adjacent 5Gantennas.lThere should be at least 1 m vertical distance betweenantennas that work on the same frequency band andbelong to different APs.9OutdoorantennaWhen outdoor APs use single-polarized antennas, thehorizontal distance between 2.4G antennas should be at least1 m and that between 5G antennas should be at least 0.5 m.10 OutdoorantennaIf multiple APs are mounted to different poles, the APsshould provide signal coverage in the same direction or inback-to-back mode to ensure that main lobe of antennas ondifferent APs do not face each other.Recommended AP distance:≥ 44 m (APs provide signal coverage in the same direction)≥ 6 m (APs provide distance in back-to-back mode)Powerandgroundcables1 General The female connectors of power cables connecting to thedevice are fixed using a locking latch.2 General The power cables and ground cables are correctly connected.3 General The power cables and ground cables are complete and notspliced.4 GeneralThe excess of power cables or ground cables are trimmed offwithout any coils. The power cables connecting the deliveredsurge protection boxes and devices cannot be cut. Thesepower cables can be coiled.5 General Power cables and ground cable are separated from the signalcables.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.155
ComponentNo.ApplicableScopeCheck Item6 GeneralPower cables and ground cables are routed straightly andproperly bundled, with sufficient slack at the bend part. If thecables are fixed on a sharp mechanical part, take protectionmeasures.7 General The equipotential cables between the attaching cabinets shallbe securely connected.8 General The lugs for the power cables and ground cables are solderedor crimped securely.9 GeneralThe lugs and bare wires of power cables and ground cablesare tightly wrapped with tubes or insulation tape without anyexposed copper wire. Flat washers and spring washers areinstalled correctly.10 General Labels are filled and attached to power cables and groundcables correctly.11 General Power cables deployed outdoors must be covered by PVCtubes.Opticalmodule1 GeneralA single-mode fiber can only be used with a single-modeoptical module while a multimode optical fiber can only beused with a multimode optical module. On most opticalmodules, the fibers of different types cannot be used together.2 GeneralThe labels of pluggable optical modules are smoothlyattached and intact, and cannot be covered by the opticalmodules.3 GeneralIf a short-distance optical fiber is used for a long-distanceoptical module, especially in loopback scenarios, use anoptical attenuator to prevent the optical module from beingburnt. 5.8 Guide to Making Drip LoopsTo prevent water from flowing into devices along cables, you need to take waterproofmeasures, for example, create a drip loop on a cable. As an example, the following describeshow to create drip loops on network cables connected to a device in different directions.NOTElWhen a device is installed in a harsh environment or its ports face upward, follow outdoorwaterproof standards to lay out indoor cables. For details, see "Cable Connection" in theAP6510DN&AP6610DN Hardware Installation and Maintenance Guide.lThe network cable directions in the description below are relative to an AP.lIf a cable is downward, no drip loop is required.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.156
Downward Port, Upward Cable≥50mmĶ≤100mmǹUpward Port, Upward Cable≥50mmĶ≤100mmǹHorizontal Port, Upward Cable≥50mm≤100mmǹĶBending Radius RequirementslThe bending radius of a 7/8'' feeder must be more than 250 mm, and that of a 5/4'' feedermust be more than 380 mm.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.157
lThe bending radius of a 1/4" jumper, 1/2" super-flexible jumper, and 1/2" commonjumper must be greater than 35 mm, 50 mm, and 127 mm, respectively.lThe bending radius of a ground cable must be greater than or equal to five times thecable diameter.lThe bending radius of a network cable must be greater than or equal to five times thecable diameter (that is, 50 mm).5.9 Power Adaptation SolutionSelect a suitable power supply mode as required.DC Power SupplyTable 5-33 Mapping between device models and DC power adaptersPartNumberName Vendor Applicable Device02310JFDS5700Series,ES0W2PSD0150,150W DCPower ModuleHUAWEI AC660502220119Adapter,0degC,40degC,90V,264V,+48V/2.08AFSP AD9430DN-12AP2050DN,AP2050DN-E, andAP2050DN-SAP7050DN-ER250D-E02220935Adapter,-25degC,50degC,90V,290V,56V1.07A,C8Ktec / HONOR AP2050DN,AP2050DN-E, andAP2050DN-SAP4051TNAP6052DNAP7052DN,AP7152DN,AP7052DER250D-E02220864AC/DCAdapter--5degC-45degC-90V-270V-12V/2A-Europe Standard-DC inletHuntKey /SHILONG FUHUAAP1050DN-SAP4030TN,AP4050DN,AP4050DN-S,AP4050DN-E,AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.158
PartNumberName Vendor Applicable Device02220865AP4050DN-HD,AP4051DN,AP4151DN, andAP430-EAP5030DN-CAP6050DN andAP6150DNAP7050DER450DAC/DCAdapter--5degC-45degC-90V-270V-12V/2A-UK Standard-DC inletHuntKey /SHILONG FUHUA02220866AC/DCAdapter--5degC-45degC-90V-270V-12V/2A-Australia Standard-DC inletHuntKey02220867Adapter,-5degC,45degC,90V,270V,12V/2AHuntKey /SHILONG FUHUA02220868AC/DCAdapter--5degC-45degC-90V-270V-12V/2A-China Standard-DC inletHuntKey /SHILONG FUHUA02220869AC/DCAdapter--5degC-45degC-90V-270V-12V/2A-Brazil Standard-DC inletHuntKey02220870Adapter,-5degC,45degC,90V,270V,12V/2A,India Plug, DC PlugHuntKey /SHILONG FUHUA AC Power SupplyTable 5-34 Mapping between device models and AC power adaptersPartNumberName Vendor Applicable Device02310JFAS5700Series,ES0W2PSA0150,150W ACPower ModuleHUAWEI AC6605AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.159
PartNumberName Vendor Applicable Device02130983AC/DC powermodule--25degC-55degC-90V-264V-12V/10A,-53.5V/7.1AFSP/VAPEL AC6605 AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.160
PoE Power SupplyTable 5-35 Mapping between device models and PoE power adaptersPartNumberName Vendor Applicable Device02220369Adapter,-40degC~50degC,90V~264V,54V/0.65A,C8/RJ45,GEHuntKey /SHILONG FUHUAAP2010DN,AP2030DN,AP2050DN,AP2050DN-S,AP2050DN-EAP3010DNAP4030DN,AP4030TN,AP4050DN,AP4050DN-E,AP4050DN-S,AP4051DN,AP4051TN,AP4130DN,AP4151DNAP5010DN,AP5010SN,AP5030DN,AP5030DN-C,AP5130DNAP6010SN,AP6010DN,AP6050DN,AP6052DN,AP6150DN,AP6510DN,AP6310SNAP7030DE,AP7050DE,AP7052DE,AP7052DN,AP7110DN,AP7110SN,AP7152DNAP8030DN,AP8050DN,AP8050DN-S,AP8050TN-HD,AP8130DN,AP8130DN-W,AP8150DNAP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.161
PartNumberName Vendor Applicable DeviceAP9330DNR240D, R250D,R250D-E, R450DAT815SN02220154Adapter,-25degC,60degC,90V,264V,56V/1.52A,C8/RI45,POEADAPTERFSP AD9430DN-12AP6052DN,AP6510DNAP7030DE,AP7050DE,AP7052DE,AP7052DN,AP7110DN,AP7110SN,AP7152DNAP8030DN,AP8130DN,AP8130DN-W,AP8050DN,AP8150DN,AP8050DN-S,AP8050TN-HD,AP8082DN,AP8182DNAP8030DN,AP8130DN,AP8130DN-W,AP8050DN,AP8150DN,AP8050DN-S,AP8082DN,AP8182DN02131168AC-DC Power,-5degC,45degC,90V,264V,48V/0.42ASHILONG FUHUA AT815SN PSE Power SupplylSwitches, ACs, and APs supporting the PoE out function can be used as power sourcingequipment (PSE) to supply power to connected powered devices (PDs). Ensure that thePoE out power of a PSE meet requirements of PDs.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.162
lAn S5720-14X-PWH-SI-AC (part number: 02350MTV) can supply UPoE power toAP7050DN-Es.AP4050DN-EHardware Installation and Maintenance Guide 5 AppendixIssue 05 (2018-02-02) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.163
Wireless LAN Access Point is only used indoors This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment. The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:  Reorient or relocate the receiving antenna.  Increase the separation between the equipment and receiver.  Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  Consult the dealer or an experienced radio/TV technician for help. This device complies with FCC RF radiation exposure limits set forth for an uncontrolled enviroment. The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter and must be installed to provide a separation distance of at least 20cm from all persons.

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