ADC Telecommunications DIS080AB Digivance® 800 MHz Indoor Coverage Solution User Manual 75130 CV

ADC Telecommunications Inc Digivance® 800 MHz Indoor Coverage Solution 75130 CV

Contents

Users manual 2

ADCP-75-130 • Issue 3C • August 2006 Page 16 © 2006, ADC Telecommunications, Inc. Table 6. Maximum Forward Path RF Output Signal Levels at the Digital Remote Unit MODULATION GSM 800 EDGE 800 AMPS 800 TDMA 800 CDMA 800 NUMBER OF CARRIERS Composite (dBm) Per Carrier (dBm) Composite (dBm) Per Carrier (dBm) Composite (dBm) Per Carrier (dBm) Composite (dBm) Per Carrier (dBm) Composite (dBm) Per Carrier (dBm) 1 25.5 25.5 24.5 24.5 25 25 22 22 15 15 2 23.5 19.5 21 18 22 19 20 17 14 11 3 21 16 19 13.5 20.5 16 19 14 13.5 9 4 20 14 18 12 19 13 18 12 13 7 5 19 12 17 10 18 11 17.5 10.5 12.5 6 6 18 10 16 8.5 17.5 9.5 17 9 12 4.5 7 17.5 9 15.5 7 17 8 16.5 8 12 3.5 8 17 8 15 6 16 7 16 7 11.5 3 Note : Per Industry Canada Section 5.3 – The rated output power of this equipment is for single carrier operation. For situations where multiple carrier operation signals are present, the rating would have to be reduced by 3.5 dB, especially where the output signal is re-radiated and can cause interference to adjacent band users. This power reduction is to be by means of input power or gain reduction and not by an attenuator at the output of the device.
ADCP-75-130 • Issue 3C • August 2006 Page 17 © 2006, ADC Telecommunications, Inc. 3 INSTALLATION PLANNING AND SYSTEM DESIGN This section provides installation planning information and basic system design recommendations for RF engineers that will be designing and installing an in-building coverage solution using the Digivance ICS. System design and planning services are available from ADC if required. Refer to Section 7 of this manual for additional information. 3.1 Base Station Interface Requirements The DHU may be interfaced either locally or remotely with the BTS. As referenced in this publication, the BTS could be either a microcell or a cell site base station. With a local interface, a hard-wire connection is provided between the DHU and the BTS (microcell) using coaxial cables. With a remote interface, an over-the-air connection is provided between the DHU and the BTS (cell site base station) using a donor antenna. 3.1.1 Local BTS (Microcell) Interface A local interface between the DHU and the BTS (microcell) over coax requires specific RF input and output signal levels at both the DHU and BTS. The correct signal levels can generally be provided by inserting attenuation in the forward and reverse signal paths. In the forward path, the correct input level can be provided at the DHU using the High Power Conditioning Panel (HPCP). The HPCP is an accessory item that is used to attenuate the forward path RF signal. The HPCP provides attenuation adjustments in 1 dB increments over a range of 40 to 70 dB. A block diagram of a typical local BTS interface is shown in Figure 8. The maximum RF input signal level the DHU will accept is determined by the DHU overdrive limiter. When the RF signal input to the DHU is set to 1 dB below the DHU overdrive level, the RF signal output at the DRU will be at the specified maximum level (see Table 6). The level of the RF signal output at the DRU is dependent on the modulation protocol and the number of carriers. HIGH POWERCOND. PANELFORWARD(DOWNLINK)REVERSE (UPLINK) COMPOSITE MAXPER TABLE 6-40 dBm(COMPOSITEMAX)COMPOSITE MAX PERADJUSTMENTPROCEDURE-30 dBm(COMPOSITE MAX) 17792-CDIGITALHOSTUNITOPTICAL LINKOPTICAL LINKDIGITALREMOTEUNITDIRECTIONAL ANTENNATO/FROM HANDSETSLOCAL BASETRANSCEIVER STATION(MICRO CELL)T1 LINKTO SWITCH EXTERNALATTENUATOR(IF REQUIRED) Figure 8. Local BTS Interface Block Diagram In the reverse path, the input signal level required at the BTS can generally be provided using an external attenuator or by adjusting the BTS. When the level of the reverse path (uplink) signal at the DRU is at the recommended composite maximum of –40 dBm, the level of the RF output signal from the DHU will be –30 dBm.
ADCP-75-130 • Issue 3C • August 2006 Page 18 © 2006, ADC Telecommunications, Inc. The HPCP is rack or wall mountable. Refer to the Digivance ICS 800 and 1900 MHz High Power Conditioning Panel User Manual (ADCP-75-175) for additional information. 3.1.2 Remote BTS (Cell Site Base Station) Interface A remote interface between the DHU and the BTS (cell site base station) via a donor antenna requires specific RF input and output signal levels at both the DHU and the antenna. The correct input and output signal levels can generally be provided using the Remote Interface Unit (RIU). The RIU is an accessory item that is used to adjust both the forward and reverse path RF signal levels. In the forward path, the RIU provides gain adjustments in 1 dB increments over a range of +9 to +40 dB. In the reverse path, the RIU provides gain adjustments in 1 dB increments over a range of +28 to +59 dB. A block diagram of a typical remote DHU to BTS interface is shown in Figure 9. DIRECTIONAL ANTENNA TO/FROM CELL SITE BTS17793-BREMOTEINTERFACEUNITFORWARD(DOWNLINK)REVERSE (UPLINK)-40 dBm(COMPOSITEMAX)-30 dBm(COMPOSITEMAX)DIGITALHOSTUNITOPTICAL LINKOPTICAL LINKDIGITALREMOTEUNITDIRECTIONAL ANTENNATO/FROM HANDSETSCOMPOSITE MAXPER TABLE 6COMPOSITEMAX PERADJUSTMENTPROCEDURE Figure 9. Remote BTS Interface Block Diagram The RIU connects to a directional antenna through a duplexer (internal) that provides separate forward and reverse path connections for the DHU. In the forward path (downlink), the maximum RF input signal level the DHU will accept is determined by the DHU overdrive limiter. When the RF signal input to the DHU is set to 1 dB below the DHU overdrive level, the RF signal output at the DRU will be at the specified maximum level (see Table 6). The level of the RF signal output at the DRU is dependent on the modulation protocol and the number of carriers. In the reverse path, the RF output signal level required at the donor antenna will vary depending on the distance from the BTS. When the level of the reverse path (uplink) signal at the DRU is at the recommended composite maximum level of –40 dBm, the level of the RF output signal from the DHU with be –30 dBm. Therefore, it will generally be necessary to add some gain to the reverse path signal in order to provide the output RF signal level required at the donor antenna. The RIU is rack or wall mountable and is powered by 120–240 VAC (50/60 Hz) power. Refer to the Digivance Remote Interface Unit User Manual (ADCP-75-178) for additional information.
ADCP-75-130 • Issue 3C • August 2006 Page 19 © 2006, ADC Telecommunications, Inc. 3.2 Location and Mounting Requirements 3.2.1 DHU and DEU Location and Mounting Requirements The DHU and the DEU may be either rack mounted or wall mounted. Fasteners (both metric and US standard) are included with each unit for rack mount applications. A pair of reversible mounting brackets is provided that allows the unit to be mounted in either a 19-inch or 23-inch EIA or WECO equipment rack. When rack-mounted, the front panel of the unit is flush with the front of the rack. The cable management tray extends 3.9 inches (99 mm) beyond the front panel. Both the DHU and DEU occupy 3.5 inches (89 mm) of rack space. Make sure the mechanical loading of the rack will be even to avoid a hazardous condition such as a severely unbalanced rack. The rack should safely support the combined weight of all the equipment it holds and be properly anchored. For wall-mount applications of the DHU or DEU, a pair of holes is provided in the cable management tray that allows the unit to be mounted on any flat vertical surface. The mounting holes are spaced 11-21/32 inches (296 mm) apart. The DHU/DEU should be oriented so the front panel faces up when mounted. Appropriate fasteners for wall mounting must be provided by the installer. It is recommended that a backer board such as 3/4-inch plywood be installed over the mounting surface to provide a secure base for attaching the DHU or DEU. The DHU and DEU should be mounted in a non-condensing indoor environment such as inside a wiring closet or within an environmentally controlled cabinet. All controls, connectors, and indicators are mounted on the front panel. All cables should be routed to the front panel for connection. Cable retainers provided on the cable management tray for securing the fiber optic, DC power, and external alarm system cables. The maximum recommended ambient temperature for the DHU and DEU is 50º C (122º F). Sufficient space for air circulation should be provided between each unit when installed in a multi-unit rack assembly because the operating ambient temperature of the rack environment might be greater than room ambient. A minimum clearance of 3 inches (76 mm) should be provided on both the left and right sides of the unit for air intake and exhaust. Refer to Figure 2 for the DHU dimensions and Figure 6 for the DEU dimensions. 3.2.2 DRU Location and Mounting Requirements The DRU must be installed in a non-condensing indoor environment and may be wall-mounted or ceiling-mounted. The DRU may also be installed in spaces used for environmental air such as the space over a suspended ceiling or beneath a raised floor. However, the DRU is not intended for installation in marine, industrial, or Intrinsic Safety (IS) environments without an engineering review of the air quality as well as other constituent gasses and dusts. Indoor air environments are to have air borne contaminants at or below levels established in Telcordia Standard, GR-63-CORE, Network Equipment-Building System (NEBS) Requirements: Physical Protection, Section 4.5 Airborne Contaminants, Table 4-11, Indoor Contaminant Levels. Contact ADC for application assistance if necessary. The DRU is equipped with four integral mounting feet that allow it to be fastened to any flat vertical or horizontal surface. Holes are provided in the mounting feet for inserting fasteners. Appropriate fasteners for securing the DRU to the selected mounting surface must be provided by the installer.
ADCP-75-130 • Issue 3C • August 2006 Page 20 © 2006, ADC Telecommunications, Inc. The DC power cable and optical fibers should be routed to the DRU front panel for connection. The antenna coaxial cable should be routed to the DRU rear panel for connection. A minimum of 3 inches (76 mm) of clearance space should be provided on all sides of the DRU (except the bottom) to ensure there is adequate air circulation for cooling. In addition, at least one surface of the DRU installation area must be open to the interior of the building. If a portable/flexible antenna will be installed, a minimum of 9 inches (229 mm) clearance should be allowed on the surface that is perpendicular to the antenna. Refer to Figure 4 for the DRU dimensions. 3.3 Powering Requirements 3.3.1 DHU and DEU Powering The DHU and DEU are powered by 120–240 VAC (50/60 Hz) which is supplied through a standard three-conductor 120 VAC power cord. The power cord is provided with the unit and is 98 inches (2.5 m) long. Both the DHU and the DEU have a current rating of 2.0 Amps at 120 VAC input. Each unit should be located so that an AC outlet is within the reach of the power cord. If back-up powering is required, it is recommended that the building Uninterruptible Power Supply (UPS) system be used to provide back-up power to the DHU and DEU in the event of an AC power outage. This will also power all the DRU’s that are powered by the DHU or DEU. 3.3.2 DRU Powering The DRU is powered by 48 VDC power which is input to the DRU through the front panel RJ-45 connector. Power to the DRU may be provided by the DHU, DEU, or by a 120 VAC to 48 VDC power converter (available separately as an accessory item) plugged into a properly grounded 120 VAC outlet. The DRU has a current rating of 400 mA at 48 VDC input. If the DRU will be powered by the DHU or DEU, the power cable must be fabricated on-site by the installer. Category 3 or 5 twisted pair cable should be used for the power supply cable. The maximum recommended length of the power cable is 500 meters. The power cable must be routed between the DHU or DEU and the DRU. Both ends of the power cable must be terminated with a male RJ-45 connector. If the DRU will be located more than 500 meters from the DHU or DRU, it must be locally powered by a 48 VDC power converter. The DRU may be powered locally by the AC/DC converter, shown in Figure 10, which is available as an accessory item. The converter is a UL Listed stand alone Limited Power Supply (LPS) unit with a rated output of 48 VDC at 1.2 Amps. The converter is equipped with a 6-foot (1.8 m) DC power cable which is terminated with an RJ-45 male connector. The converter is powered by 120–240 VAC (50/60 Hz) power which is supplied though a standard 120 VAC three-conductor power cord. The power cord is 6 feet (1.8 m) long and is provided with the converter.
ADCP-75-130 • Issue 3C • August 2006 Page 21 © 2006, ADC Telecommunications, Inc. 15988-A Figure 10. AC/DC Power Converter 3.4 Optical Options and Requirements Each DHU and its associated DEU’s and DRU’s are connected over a pair of optical fibers. One fiber transports the forward path optical signal and the other fiber transports the reverse path optical signal. Either 62.5 or 50 micron core multi-mode optical fiber; or 9 micron core single-mode optical fiber may be used for the optical transport connection. With 62.5 micron core fiber, the optical path may be up to 500 meters in length. With 50 micron core fiber, the optical path may be up to 750 meters in length. With 9 micron core cable, the optical path may be up to 10 kilometers in length. Single- and multi-mode fibers may be used in the same system. A diagram of the optical connections is shown in Figure 11. Whenever possible, use conduit or a guideway such as the FiberGuide system to route the optical fibers between the DHU, the DEU’s, and the DRU’s. Avoid routing optical fibers through ladder type cable racks or troughs that do not provide sufficient support to limit bending or prevent accidental damage. Tie-wrapping is not recommended as a means of securing fiber optic cables. Provide sufficient slack at each unit for connecting each fiber to the required port. Fibers may be pre-terminated or terminated on-site using field-installable LC type connectors.
ADCP-75-130 • Issue 3C • August 2006 Page 22 © 2006, ADC Telecommunications, Inc. TX RXTX RXTX RX TX RX TX RX TX RXPORTS 1-6PORTS1-6PORTS 1-6FIBER PORTFIBER PORTHOSTPORTFORWARD PATHREVERSE PATHFORWARD PATHREVERSE PATHFORWARD PATHREVERSE PATHDIGITALREMOTEUNITDIGITALREMOTEUNITDIGITALHOSTUNITDIGITALHOSTUNITDIGITAL EXPANSION UNITBASIC CONFIGURATION WITH DHU AND DRUBASIC CONFIGURATION WITH DHU, DEU, AND DRUEND-TO-END OPTICAL CONNECTOR/CABLE ASSEMBLY DIAGRAM16814-A62.5 MICRON: MAXIMUM LENGTH = 500 METERS50 MICRON: MAXIMUM LENGTH = 750 METERS9 MICRON: MAXIMUM LENGTH = 10 KILOMETERS Figure 11. Digivance ICS Optical Connections 3.5 Coaxial Cable Requirements The DHU interfaces either locally (see Figure 8) or remotely (see Figure 9) with the BTS through coaxial cable connections. In a local interface, coaxial cables are required to link the DHU, HPCP, and the BTS. In a remote interface, coaxial cables are required to link the DHU, RIU, and the donor antenna. The DHU, HPCP, and RIU are equipped with N-type female connectors for connecting the forward and reverse path coaxial cables. High performance, flexible, low loss 50-ohm coaxial communications cable (RG 400 or equivalent) should be used for all coaxial connections.
ADCP-75-130 • Issue 4A • December 2006 Page 23 © 2006, ADC Telecommunications, Inc. 3.6 System Expansion Planning The DEU enables 6-way expansion of any optical port. This makes it possible to add more DRU’s without having to install additional DHU’s. Each DHU is equipped with six optical ports. If more than six DRU’s are required by the application, a DEU may be connected to one of the optical ports at the DHU which expands that port to six ports. If still more optical ports are required, then a second DEU may be connected to the DHU or a second DEU may be connected to the first DEU. The ability to cascade DEU’s in parallel or in series provides unlimited flexibility. It is physically possible to connect an unlimited number DRU’s to the DHU through the installation of DEU’s. The total number of DRU’s that can be served is limited by the cumulative noise effect caused by antenna combining. This number cannot be determined until the radius distance of coverage required at the DRU antenna is determined and the path loss attributed to the structure are known. The system design requires that the carrier to noise differential be greater than the customer’s desired signal to noise ratio. If it is likely that the system will be expanded in the future, locate the DHU in such a way that it can be used as a hub for an expanded system. It should be noted that a DEU can be used as an optical regenerator. A DRU may sometimes need to be located at a point that is beyond the distance limitation imposed by the optical fiber. The solution is to install a DEU at the maximum optical fiber length from the DHU. This provides an additional 500 m, 750 m, or 10 km (depending on the fiber type) of optical fiber length beyond the DEU for connecting the DRU. 3.7 DRU Antenna Options Various antennas, shown in Figure 12, are available from ADC for use with the DRU. All antennas include a 6-foot (1.8 m) long 50-ohm coaxial cable (equipped with SMA male connector) for connection to the DRU. The DRU is equipped with an SMA female connector for connecting the antenna cable. The DRU antennas are designed for unobtrusive mounting within an office environment. Each type of antenna provides a specific coverage pattern in order to accommodate the shape of the area where coverage is required. The ceiling-mount omni directional antenna is designed to mount in the center of the coverage area. The directional panel antenna is designed to mount vertically on one side of the coverage area or in the corner of the coverage area. The ceiling mount hallway antenna is designed to mount in the center of long corridors. Non-ADC antennas may also be used with the DRU to meet various application requirements but must comply with equipment authorization for RF exposure compliance. Note: To comply with Maximum Permissible Exposure (MPE) requirements, the maximum composite output from the antenna cannot exceed 1000 Watts EIRP and the antenna must be permanently installed in a fixed location that provides at least 6 meters (20 feet) of separation from all persons.
ADCP-75-130 • Issue 3C • August 2006 Page 24 © 2006, ADC Telecommunications, Inc. DIAMETER - 6.14 INCH (156 MM)DEPTH - 1.05 INCH (27 MM)7.26 INCHES(184 MM)3.88 INCHES(99 MM)2.26 INCHES(57 MM)7.90 INCHES(201 MM)2.38 INCHES(60 MM)8.65 INCHES(220 MM)4 dBi GAIN CEILING-MOUNTHALLWAY2.5 dBi GAIN CEILING-MOUNTOMNIDIRECTIONAL7.5 dBi GAIN90 DEGREE DIRECTIONAL PANEL(WALL/CORNER-MOUNT)ALL ANTENNAS ARE EQUIPPED WITHA 72-INCH RG58/U CABLE TERMINATED WITH A MALE SMA CONNECTORMOUNTING STUDLENGTH - 1.5 INCHES (38 mm)DIAMETER - 0.875 INCHES (22 MM) MOUNTING STUDLENGTH - 1.5 INCHES (38 mm)DIAMETER - 0.875 INCHES (22 MM) 18073-AINCLUDES ADJUSTABLEMOUNTING BRACKET(NOT SHOWN) Figure 12. 800 MHz DRU Antenna Options 3.8 External Alarm System Reporting Requirements The DHU provides normally open (NO) and normally closed (NC) form C dry alarm relay contacts for reporting minor and major alarms to an external alarm system. A minor alarm is defined as a high temperature condition. A major alarm is defined as any fault condition except high temperature. Connections to the alarm contacts are provided through a screw-type terminal strip. Category 3 or 5 cable should be used for the alarm wires. If an external alarm system is not in use, no alarm connections are required. 3.9 Maintenance Requirements The Digivance ICS requires no regular maintenance to insure continuous and satisfactory operation. Maintenance, as it applies to the Digivance ICS, primarily involves diagnosing and correcting service problems as they occur. Faults and failures arising from within the Digivance ICS will generate an external alarm response which includes lighting an LED indicator(s) and closing or opening a set of alarm contacts. When an alarm is reported, it will be necessary to isolate the source of the problem by observing the LED indicators on each unit and then performing various tests to
ADCP-75-130 • Issue 3C • August 2006 Page 25 © 2006, ADC Telecommunications, Inc. isolate the problem. Once the source of the fault is isolated, the appropriate action can be taken to correct the problem. The only unit components that can be replaced are the cooling fans which are mounted in the DHU and the DEU and the modular optical transceivers. The failure of any other component within a unit will require replacement of the unit. Basic trouble-shooting procedures are provided in Section 6 of this manual. 3.10 System Design Recommendations Follow a systematic process when designing an in-building coverage solution. The following sub sections outline the four phases of the in-building coverage solution design process. System design and planning services are available from ADC if required. Refer to Section 7 of this manual for additional information. 3.10.1 Phase One – Initial Evaluation Qualify the Installation: Confirm that there are no extenuating circumstances that would prevent a successful installation such as: extreme cellular system issues (blocking, severe interference, site problems, etc.), building issues, power issues, or safety issues (site should not present any hazards or conditions that would make operation of the equipment unsafe). Analyze the RF Situation: Determine how the system RF link to the outside world will be provided. Will it be a direct feed from a BTS (microcell) or an over-the-air connection via a donor antenna? If it is a donor antenna, is the customer within the coverage footprint of a serving cell or better? The coverage can be determined during the preliminary walkthrough by checking the downlink Received Signal Strength Indication (RSSI) outside the building with a unity gain sampling antenna. Sometimes a rooftop reading is needed to obtain a sufficient signal level. Note that it is an FCC violation to expand the normal coverage footprint of a cellular site with an in-building product without prior approval of the service provider. In addition, consider the impact the system will have on traffic, especially the busy hour. Confirm with the service provider that the expected increase in the volume of calls will be addressed (if needed), possibly with additional equipment such as additional channels or a microcell. Determine the Amount of Building Attenuation: If a donor antenna will provide the RF link to the BTS, determine if there is enough signal isolation between the donor antenna and the in-building system to avoid a feedback loop and signal degradation. This step can often be accomplished during the preliminary walkthrough. Discuss Installation with Building Management and Engineering: Discuss all initially anticipated Digivance ICS coverage areas (including any obviously desirable cable routings, equipment installations, power and mechanical requirements) with the authorized client and building personnel for an initial approval/confirmation. This gives a good estimate of the extent of the system work needed. Occasionally, some of the system design work can be accomplished at this point.
ADCP-75-130 • Issue 3C • August 2006 Page 26 © 2006, ADC Telecommunications, Inc. 3.10.2 Phase Two – System Design Determine forward and reverse path loss and then design for unity gain on the uplink and maximum power out of the DRU on the downlink: The overall purpose of the Digivance ICS is to transparently overcome attenuation losses, not to provide additional gain beyond what is required to bring the signal to unity gain. Complete the following steps to make this determination: 1. Determine the in-building reverse path (uplink) losses at typical operating frequencies and distances from the subscriber handset (terminal) to the DRU. This information will be used to determine the optimal uplink signal level to the outside world. 2. Determine the typical composite cell site Effective Radiated Power (ERP) into the system. Calculate the interface adjustment required to feed the required downlink signal level to the DHU in order to drive the DRU output signal at the desired level. Determine the location of the DHU and its RF and AC power sources: Complete the following steps to make this determination: 1. Determine where and how the DHU will be mounted. 2. Determine the location of the DHU AC power source. 3. Determine the RF source (local interface with BTS or remote interface with BTS through donor antenna) for the DHU. 4. If local interface connection with the BTS is required, determine the distance to the DHU. 5. If a remote interface connection with the BTS is required, determine what type of antenna is needed and where it can be mounted. 6. Determine the attenuation or amplification requirements for the DHU to BTS interface. Discuss the design of the Digivance ICS installation with building management and engineering: Explain the proposed system design with building management and engineering personnel and obtain final design approval prior to installation. 3.10.3 Phase Three – Installation Use industry standard practices for cabling, installation, and powering to complete the following: 1. Install the DHU as described in Section 3 of this manual and adjust the RF interface levels based on the system design specifications. Additional information concerning the DHU to BTS interface is provided in the Digivance ICS Remote Interface Unit User Manual (ADCP-75-178) and in the Digivance ICS 800 and 1900 MHz High Power Conditioning Panel User Manual (ADCP-75-175). 2. Install a DRU as described in the Digital Remote Unit Installation Instructions (ADCP -75-112). If a donor antenna is used, install the DHU and RIU close to the donor antenna.
ADCP-75-130 • Issue 3C • August 2006 Page 27 © 2006, ADC Telecommunications, Inc. 3. Conduct an initial performance evaluation and complete the following: a) Confirm proper isolation, signal quality, and power levels. b) Make test calls from DRU service area and evaluate call quality (confirm with service provider if desired). c) Address performance issues as needed. 4. Install the remaining DRU’s and also any DEU’s as described in the Digital Expansion Unit Installation Instructions (ADCP-75-111). Test call quality and range of each DRU as needed. 5. Check powering and alarm functions of entire system per Digivance ICS specifications. 3.10.4 Phase Four - Performance Evaluation Complete the following to evaluate the performance of the Digivance ICS: 1. Evaluate the forward path (downlink) and reverse path (uplink) RF signal levels and quality. 2. Make continuous calls from DRU to DRU, checking all service areas, seams, and coverage boundaries for call quality (both DL and UL). Address all quality issues as needed. 3. Place calls both leaving and entering the building(s), in parking lots, etc. Address all quality issues as needed. 4. Contact client/service provider to inform them when the Digivance ICS is operational.
ADCP-75-130 • Issue 3C • August 2006 Page 28 © 2006, ADC Telecommunications, Inc. 4 DIGITAL HOST UNIT INSTALLATION PROCEDURE This section provides the installation procedures for the DHU. Installation of the DEU(s) and DRU(s) may proceed separately from the installation of the DHU. The installation procedures for the DEU are provided in the Digital Expansion Unit Installation Instructions (ADCP -75-111) which are shipped with the DEU. The installation procedures for the DRU, the DRU antennas, and the AC/DC converter (optional DRU accessory) are provided in the Digital Remote Unit Installation Instructions (ADCP-75-112) which are shipped with the DRU. When all units of the Digivance ICS have been installed, refer to Section 5 of this manual for the system power up and test procedures. 4.1 System Plan Review and Pre-Installation Cable Routing Before beginning the installation, review the system plan with the system engineer. Make sure each equipment installation site is identified and located and all cable runs are mapped out. The coaxial, DC power, and fiber optic cables may be routed between the various equipment locations before the equipment is installed. Whenever possible, route fiber optic cables through conduit or a guideway such as the FiberGuide system. Avoid routing fibers through ladder type cable racks or troughs that do not provide sufficient support to limit bending or prevent accidental damage. Tie-wrapping is not recommended as a means of securing fiber optic cables. Make sure to leave sufficient slack at each equipment location for connectorizing and cable management. The procedures for terminating the cables and for connecting the cables to the DHU are provided in the sections that follow. 4.2 Tools and Materials The following tools are required in order to complete the procedures in this section: • Box cutter • Pencil or scribe • Medium and small size flat-bladed screwdrivers • TORX screwdriver (T20 bit) • Pliers • Wire cutters • Wire stripper • Tool kit for attaching RJ-45 male connectors to category 3 or 5 cable • Tool kit for attaching N-type male connectors to coaxial cable • Tool kit for attaching LC connectors to multimode fiber optic cable • Drill and assorted drill bits (wall-mount installations only) • Multimeter • Optical power meter • Laser light source • ESD wrist strap
ADCP-75-130 • Issue 3C • August 2006 Page 29 © 2006, ADC Telecommunications, Inc. The following materials are required in order to complete the procedures in this section: • Wall-mount fasteners (wall-mount applications only) • #22 AWG (0.40 mm) category 3 or 5 cable (for power cable and external alarm connections) • RJ-45 male connectors (for power cable) • #18 AWG (1.00 mm) insulated stranded copper wire (for chassis grounding wire) • Ring terminal for #18 wire (for chassis ground wire connection) • 50 or 62.5 micron core multi-mode or 9 micron core single-mode fiber optic cable • LC-type field installable connectors • High performance, flexible, low loss 50-ohm coaxial cable • N-type male connectors • Wire ties 4.3 Unpacking and Inspection This subsection provides instructions for opening the shipping boxes, verifying that all parts have been received, and verifying that no shipping damage has occurred. Use the following procedure to unpack and inspect the DHU: 1. Open the shipping carton and carefully unpack the DHU from the protective packing material. 2. Check the DHU for broken or missing parts. If there are any damages, contact ADC (see Section 6 at the end of this manual) for an RMA (Return Material Authorization) and to reorder if replacement is required. 4.4 Mounting Procedure The DHU may be either rack-mounted or wall-mounted. Of the procedures that follow, use whichever procedure is appropriate for the installation: Note: To insure that all optical connectors and transceivers remain dust-free during installation, leave all dust caps and dust protectors in place until directed to remove them for connection. 4.4.1 Rack Mount Installation The DHU may be mounted in either a 19-inch or 23-inch EIA or WECO equipment rack. Both US standard and metric machine screws are included for rack mounting the DHU. When loading the DHU in a rack, make sure the mechanical loading of the rack is even to avoid a hazardous condition such as a severely unbalanced rack. The rack should safely support the combined weight of all the equipment it holds and be securely anchored. In addition, the maximum recommended ambient temperature for the DHU is 50º C (122º F). Allow sufficient air circulation or space between units when the DHU is installed in a multi-unit rack assembly because the operating ambient temperature of the rack environment might be greater than room ambient.
ADCP-75-130 • Issue 3C • August 2006 Page 30 © 2006, ADC Telecommunications, Inc. Warning: Wet conditions increase the potential for receiving an electrical shock when installing or using electrically-powered equipment. To prevent electrical shock, never install or use electrical equipment in a wet location or during a lightning storm. Use the following procedure to install the DHU in the equipment rack: 1. The DHU is shipped with the mounting brackets installed for 19-inch rack installations. If mounting the DHU in a 19-inch rack, proceed to step 4. If mounting the DHU in a 23-inch rack, proceed to step 2. 2. Remove both mounting brackets from the DHU (requires TORX screwdriver with T20 bit) 3. Reinstall both mounting brackets so the long side of the bracket is flush with the DHU front panel as shown in Figure 13. Use the screws removed in step 2 to re-attach the brackets to the DHU enclosure. 4. Position the DHU in the designated mounting space in the rack (per system design) as shown in Figure 14. 17271-AREMOVE AND REINSTALL MOUNTINGBRACKETS AS SHOWN FOR INSTALLATION IN 23-INCH RACKS Figure 13. Installing the Mounting Brackets for 23-Inch Rack Installations 17281-A Figure 14. DHU Rack Mount Installation
ADCP-75-130 • Issue 3C • August 2006 Page 31 © 2006, ADC Telecommunications, Inc. 5. Secure the mounting brackets to the rack using the four machine screws provided (use #12-24 screws or M6 x 10 screws, whichever is appropriate). Note: Provide a minimum of 3 inches (76 mm) of clearance space on both the left and right sides of the DHU for air intake and exhaust. 4.4.2 Wall-Mount Installation The DHU may be mounted from any flat vertical surface. It is recommended that a backer board such as 3/4-inch plywood be applied over the mounting surface to provide a secure base for attaching the DHU. Two mounting holes are provided in the cable management tray for securing the DHU to the mounting surface. The fasteners must be provided by the installer. Use the following procedure to wall-mount the DHU: Warning: Wet conditions increase the potential for receiving an electrical shock when installing or using electrically-powered equipment. To prevent electrical shock, never install or use electrical equipment in a wet location or during a lightning storm. 1. Obtain the appropriate fasteners (lag bolts, screw anchors, etc.) for securing the DHU to the mounting surface. 2. Position the DHU on the mounting surface in the specified location (per the system design) with the front panel facing up as shown in Figure 15. Note: Provide a minimum of 3 inches (76 mm) of clearance space on both the left and right sides of the DHU for air intake and exhaust. 17272-ABACKER BOARD SUCHAS 3/4-INCH PLYWOOD Figure 15. DHU Wall-Mount Installation
ADCP-75-130 • Issue 3C • August 2006 Page 32 © 2006, ADC Telecommunications, Inc. 3. Using the DHU as a template, mark the location of the mounting holes on the mounting surface. Note: The mounting holes in the DHU cable management tray are spaced 11-21/32 inches (296 mm) center to center. 4. Set the DHU aside and then drill appropriately sized holes in the mounting surface for the fasteners. 5. Partially install the fasteners in the drilled holes. Leave the head of each fastener protruding about 1/4 inch (6 mm) from the mounting surface. 6. Hang the DHU from the fasteners and then securely tighten each fastener. 4.5 Chassis Ground Connections A stud is provided on the front side of the chassis for connecting a grounding wire to the chassis. Use the following procedure to connect the grounding wire to the chassis and to route the grounding wire to an approved earth ground source: 1. Obtain a length of #18 AWG (1.00 mm) insulated stranded copper wire for use as a chassis grounding wire. 2. Terminate one end of the wire with a ring terminal. 3. Locate the chassis ground stud at the front of the DHU as shown in Figure 16. 17279-A Figure 16. Chassis Ground Stud 4. Secure the ring end of the wire to the chassis ground stud (see Figure 16) using the nut and two star washers provided. 5. Route the free end of the chassis grounding wire to an approved (per local code or practice) earth ground source. 6. Cut the chassis grounding wire to length and connect it to the approved ground source as required by local code or practice. Note: Be sure to maintain reliable grounding for rack and wall mounted equipment. Pay particular attention to ground source connections.
ADCP-75-130 • Issue 3C • August 2006 Page 33 © 2006, ADC Telecommunications, Inc. 4.6 Coaxial Cable Connections The RF interface between DHU and the BTS is supported through a pair of type N female connectors mounted on the DHU front panel. One connector provides the coaxial cable connection for the forward path (downlink) signal. The other connector provides the coaxial cable connection for the reverse path (uplink) signal. Coaxial cables link the DHU to the BTS through an interface device such as the HPCP or the RIU. Use the following procedure to install the forward and reverse path coaxial cables and connect them to the DHU: 1. Obtain the required lengths of high performance, flexible, low loss 50-ohm coaxial communications cable (RG 400 or equivalent) for all coaxial connections. 2. Route the forward path and reverse path coaxial cables (if not already routed) between the DHU and the specified interface device (per system design) and cut to the required length. Allow sufficient slack for dressing and organizing cables at the DHU. 3. Terminate each cable with a type N male connector following the connector supplier’s recommendations. 4. Connect the forward path cable to the RF IN connector on the DHU front panel as shown in Figure 17. 5. Connect the reverse path cable to the RF OUT connector on the DHU front panel. 17273-ATYPE-N MALE CONNECTORRF IN CONNECTOR(FORWARD PATH)RF OUT CONNECTOR(REVERSE PATH) Figure 17. Forward and Reverse Path Coaxial Cable Connections 6. Dress and secure cables at the DHU per standard industry practice. 7. Adjust the RF signal levels and complete the remaining the forward and reverse path coaxial cable connections as specified by the following: Local Interface Using High Power Conditioning Panel: Refer to the High Power Conditioning Panel User Manual (ADCP-75-175) for adjustment and connection procedure. Remote Interface Using Remote Interface Unit: Refer to the Remote Interface Unit User Manual (ADCP-75-178) for adjustment and connection procedure. Local or Remote interface using ancillary interface device: Refer to Section 5.2, Turn-Up System and Verify Operation, for adjustment and connection procedure.
ADCP-75-130 • Issue 3C • August 2006 Page 34 © 2006, ADC Telecommunications, Inc. 4.7 Modular Optical Transceiver Installation The modular optical transceivers are available separately and may or may not be installed in the DHU depending on the configuration ordered. If the optical transceivers are factory installed in the DHU, skip this section and proceed to Section 4.8. If the optical transceivers are not factory installed, use the following procedure to install each transceiver: 1. Slip on an Electro-Static Discharge (ESD) wrist strap and connect the ground wire to an earth ground source such as the grounding stud on the DHU front panel. Wear the ESD wrist strap while completing the optical transceiver installation procedure. Warning: Electronic components can be damaged by static electrical discharge. To prevent ESD damage, always wear an ESD wrist strap when handling electronic components. 2. Locate the appropriate transceiver socket on the front of the DHU as shown in Figure 18 and remove the port cover from the socket. TXRXDETAIL DRAWING OF OPTICAL TRANSCEIVERSOCKETSDETAIL DRAWINGOF TYPE A AND TYPE BMODULAR OPTICALTRANSCEIVERSTXRXTYPE ATRANSCEIVERTYPE BTRANSCEIVERRELEASELEVERRELEASE TABOPTICAL TRANSCEIVERSOCKETTRANSCEIVER COLOR CODEBLUE = SINGLE-MODE (9 MICRON)BLACK/BEIGE = MULTI-MODE (50 OR 62.5 MICRON)17258-APORTCOVERDUST CAPS Figure 18. Optical Transceiver Installation 3. Select the optical transceiver that corresponds to the type of fiber (single- or multi-mode) required for the installation. The color of the transceiver (see transceiver color code in Figure 18) corresponds to the fiber type. 4. Remove the transceiver from the anti-static packaging and orient for installation (see Figure 18.).
ADCP-75-130 • Issue 3C • August 2006 Page 35 © 2006, ADC Telecommunications, Inc. Note: Two types of optical transceivers, type A and type B, are available. Both types provide the same functionality. On the type A optical transceiver, the release lever (see Figure 18) must be closed for installation. 5. Insert the optical transceiver into the socket until it locks into place. 6. Replace the optical transceiver dust cap if it was removed for installation. 7. Repeat procedure for each optical transceiver that requires installation. 4.8 Ports 1–6 Optical Connections The optical interface between the DHU and each DEU or DRU is supported by six optical ports. Each of the six optical ports provides a duplex LC-type optical transceiver which is mounted on the DHU front panel. One side of the transceiver provides the optical fiber connection for the forward path (downlink) signal. The other side of the transceiver provides the optical fiber connection for the reverse path (uplink) signal. Use the following procedure to install the forward and reverse path optical fibers and to connect them to the DHU: Danger: This equipment uses a Class 1 Laser according to FDA/CDRH rules. Laser radiation can seriously damage the retina of the eye. Do not look into the ends of any optical fiber. Do not look directly into the optical transceiver of any digital unit or exposure to laser radiation may result. An optical power meter should be used to verify active fibers. A protective cap or hood MUST be immediately placed over any radiating transceiver or optical fiber connector to avoid the potential of dangerous amounts of radiation exposure. This practice also prevents dirt particles from entering the transceiver or connector. 1. Obtain the required lengths of single- or multi-mode fiber optic cable. 2. Route the fiber optic cable between the DHU and the DEU or DRU (if not already routed) and cut to required length. Allow sufficient slack for dressing and organizing the cables at each unit. Maintain a minimum bend radius of 2 inches (50 mm). Note: The maximum path lengths for the optical fibers are as follows: 500 meters (1,641 feet) for 62.5 micron core multi-mode fiber, 750 meters (2,461 feet) for 50 micron core multi-mode fiber, and 10 km (32,808 ft) for 9 micron core single-mode fiber. 3. Terminate each optical fiber with a field-installable LC type fiber optic connector as shown in Figure 19. Follow the instructions provided by the connector manufacturer for installing the connector. 4. Test each fiber for optical loss as described in Subsection 6.4.2 of this manual. 5. Designate one of the fibers as the forward path fiber and the other as the reverse path fiber and label both ends of each fiber with the path designation. 6. Use the plastic joiner provided with the LC connectors to join the DHU Port 1 forward and reverse path connectors together (see Figure 19). Make sure the forward path and reverse path connectors are oriented as shown. Note: When viewing any Port 1-6 optical transceiver from the front, the forward path port is on the left and the reverse path port is on the right as shown in Figure 20. In addition, single-mode transceivers are colored blue and multi-mode transceivers are colored black or beige. Both single- and multi-mode transceivers may be mounted on the same DHU.
ADCP-75-130 • Issue 3C • August 2006 Page 36 © 2006, ADC Telecommunications, Inc. 17274-AREVERSE PATH (RX)CONNECTORFORWARD PATH (TX)CONNECTOROPTICAL CONNECTORASSEMBLY DETAILPORT 1 OPTICALTRANSCEIVEROPTICALCONNECTORCABLEGUIDESCABLE GUIDEDETAILDESIGNATION CARD AND HOLDER DETAILHOLDERCARDCLEARPLASTICCOVER Figure 19. Ports 1–6 Fiber Optic Cable Connections 17150-ADETAIL DRAWING OFOPTICAL PORTREVERSEPATH (RX)FORWARDPATH (TX)DUST CAP (LEAVE IN PLACEUNTIL READY TO INSTALL CONNECTOR)TRANSCEIVER COLOR CODEBLUE = SINGLE-MODE (9 MICRON)BLACK/BEIGE = MULTI-MODE (50 OR 62.5 MICRON) Figure 20. Optical Transceiver Designations
ADCP-75-130 • Issue 3C • August 2006 Page 37 © 2006, ADC Telecommunications, Inc. 7. Remove the dust caps from the optical fiber connectors and the port 1 optical transceiver. Note: Leave the dust cap in place on any unused optical transceiver. 8. Clean each connector (follow connector supplier’s recommendations) and then insert the optical fiber connector pair into DHU optical port 1 (see Figure 19). 9. Place the optical fibers within the cable guides provided on the cable management tray (see Figure 19) and then dress and secure the fibers at the DHU per standard industry practice. 10. Connect the forward and reverse path optical fibers to the DEU or the DRU as specified in the instructions provided with that unit. 11. Use the designation card provided (see Figure 19) to indicate the location and name of the DRU or DEU that is connected to each optical fiber pair. The designation card holder may be attached to any convenient flat surface such as the DHU cable management tray 12. Repeat steps 1–11 for each remaining optical port. 4.9 DC Power Connections The DC power interface between the DHU and each DRU is supported by six RJ-45 female connectors. Each DHU RJ-45 connector provides nominal 48 VDC power for the associated DRU except when the DRU is powered with an AC/DC converter. A category 3 or 5 twisted pair cable is used to feed the power from the DHU to the DRU. Use the following procedure to install the DC power cable and to connect it to the DHU. 1. Obtain the required length of category 3 or 5 twisted pair cable. 2. Route the cable between the DHU and the DRU (unless already routed) and then cut to required length. Allow sufficient slack for dressing and organizing the cable at the DHU. Note: The maximum distance for routing power cable is 500 meters (1,641 feet). 3. Terminate each end of the cable with a male RJ-45 connector. Match the wire color to the connector pin as specified in Table 6. Caution: The DRU will be damaged if the RJ-45 connector is wired incorrectly. 4. Perform a continuity test to verify that each wire is properly connected to the terminating RJ-45 connector and check the connector for correct polarity (see diagram in Table 7). Table 7. RJ-45 Connector Pin Designations PIN NUMBER WIRE COLOR CONNECTOR PINS 1 2 3 4 5 6 7 8 White/Green Green White/Orange Orange White/Blue Blue White/Brown Brown PIN1PIN8+48 VDC ON PINS 1, 3, 5, AND 7RETURN ON PINS 2, 4, 6, AND 816180-A
ADCP-75-130 • Issue 3C • August 2006 Page 38 © 2006, ADC Telecommunications, Inc. 5. Connect the DC power cable to the DHU port 1 DC PWR jack as shown in Figure 21. 6. Place the DC power cable within the cable guides provided (see Figure 21) and then dress and secure the cable at the DHU per standard industry practice. 17275-ARJ-45 CONNECTORDETAILPORT 1 DC POWERCONNECTORRJ-45CONNECTORCABLEGUIDESCABLE GUIDEDETAIL18 Figure 21. 48 VDC Power Cable Connection 7. Connect the DC power cable to the DRU as specified in the instructions provided with that unit. 8. Repeat steps 1–7 for each remaining DRU that will be powered by the DHU. 4.10 External Alarm System Connections The alarm interface between the DHU and an external alarm system is supported by a six-terminal plug (with screw-type terminals) that connects to a receptacle mounted on the DHU front panel. The terminal plug provides connections to normally open (NO) and normally closed (NC) dry type alarm contacts for both minor and major alarms. A category 3 or 5 cable is typically used to connect the DHU to the external alarm system. Use the following procedure to install the alarm wiring and connect it to the DHU: 1. Obtain the required length of category 3 or 5 cable. 2. Route the cable between the DHU and the external alarm system (if not already routed) and then cut to required length. Allow sufficient slack for dressing and organizing the cable at the DHU.
ADCP-75-130 • Issue 3C • August 2006 Page 39 © 2006, ADC Telecommunications, Inc. 3. Strip back the outer cable sheath and insulation to expose the wires at both ends of the cable and strip back 0.2 inches (5 mm) of insulation each wire. 4. Connect the Major alarm wire pair to the MAJOR COM/NC or MAJOR COM/NO terminals (whichever is required by the external alarm system) on the DHU alarm terminal connector (supplied with DHU) as shown in Figure 22. 17278-AALARMCONNECTORRECEPTACLEMAJORALARMWIRESMINORALARMWIRESALARM CONNECTORDETAILALARMCONNECTORNOCOM NCMINORNO COMNCMAJOR Figure 22. External Alarm System Connections 5. Connect the Minor alarm wire pair to the MINOR COM/NC or MINOR COM/NO terminals (whichever is required by the external alarm system) on the DHU alarm terminal connector as shown in Figure 22. 6. Insert the alarm terminal connector into the receptacle on the DHU front panel. 7. Connect the Major and Minor alarm wire pairs to the appropriate terminals on the external alarm system. 8. Dress and secure cable per standard industry practice. 4.11 AC Power Connections The AC power interface between the DHU and the AC power source is supported by a 3-wire AC power cord connector located on the DHU front panel. The AC connector provides a connection point for the power cord which is provided separately with the DHU. Use the following procedure to install the AC power cord:
ADCP-75-130 • Issue 3C • August 2006 Page 40 © 2006, ADC Telecommunications, Inc. 1. Locate the 120 VAC power cord which is provided separately with the DHU. Use only the AC power cord provided with the DHU or an equivalent UL/CUL listed 3-conductor, 18 AWG cord terminated in a molded-on plug cap rated 125 V, 15 A with a maximum length of 6 feet (1.8 m). Note: The DHU is intended to be used with a 3-wire grounding type plug which has a grounding pin. Equipment grounding is required to ensure safe operation. Do not defeat the grounding means. Verify DHU is reliably grounded when installed. 2. Place the DHU AC power ON/OFF switch, shown in Figure 23, in the OFF position (press O). 17276-AAC POWER CORD Figure 23. AC Power Connection 3. Connect the receptacle end of the power cord to the AC connector on the DHU. 4. Route the plug end of the power cord to the specified AC outlet (per the system design) and connect plug to outlet. Warning: The current rating of the DHU is 2.0 Amps at 120 VAC. Avoid overloading circuits which may cause damage to over-current protection devices and supply wiring. 5. Dress and secure cable per standard industry practice. 6. When all units of the Digivance ICS have been installed, refer to Section 4 of this manual for the system power up and test procedures. 4.12 Create As-Built Drawing Following installation, create an “as-built” drawing of the complete Digivance ICS system. Using a drawing of the building floor plan, show the installed location of each piece of equipment including the various Digivance electronic units, the antennas, the interface units, and the microcell (if used). In addition, show the location and routing of all copper, coaxial, and fiber optic cable runs used with the system. Retain the as-built drawing for reference when troubleshooting or when planning for system expansion.

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