Bosch Security Systems DCNWDU Wireless Discussion Units User Manual Part 1

Bosch Security System BV Wireless Discussion Units Part 1

Contents

User Manual Part 1

Installation and User InstructionsWireless discussion systemenDCN Wireless
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | Important Safeguards en | 3Important SafeguardsBefore you install or operate the DCN Wireless digital congress network, you must read the Important Safety Instructions. The Important Safety Instructions are supplied together with the central control unit.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | Disclaimers en | 4DisclaimersCobraNet is a trademark of Peak Audio — a division of Cirrus Logic, Inc. — in the United States and/or other countries.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | About this manual en | 5About this manualFunctionThe Installation and User Instructions gives the installers and the operators the necessary data to install, configure and operate a basic DCN Wireless Discussion System. When you want to make a more advanced DCN Wireless Discussion System, you also need information from the DCN Next Generation Installation and User Instructions. The product index (refer to appendix B) tells you where you can find more data about devices that can be connected to DCN Wireless.Digital versionThe Installation and User Instructions is available as a digital file (Portable Document File, PDF).When the PDF refers you to a location that contains more data, you can click the text to go there. The text contains hyperlinks.Admonitions and notesThe Installation and User Instructions uses admonitions and notes. The admonition gives the effect if you do not obey the instructions. These are the types:•CautionIf you do not obey the caution, you can cause damage to the equipment.•WarningIf you do not obey the warning, you can cause personal injury or death.SignsThe Installation and User Instructions shows each admonition with a sign. The sign shows the effect if you do not obey the instruction.The sign that is shown along with a note gives more data about the note itself. AdmonitionGeneral sign for cautions and warnings.AdmonitionRisk of electric shock.AdmonitionRisk of electro-static discharges (refer to the section ’Electro-static discharges’).NoteGeneral sign for notes.NoteRefer to another information source.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | About this manual en | 6Electro-static dischargesElectro-static discharges can damage electric components. You must take measures to prevent electro-static discharges when you touch PCBs (refer to figure 1).Conversion tablesLength, mass and temperature are in SI units. Refer to the data below to change SI units to imperial units.figure 1: ESD preventiontable 1: ESD preventionNo. Description1 Safety isolating transformer2Distribution supply box3 Conductive compartment trays4Electro-static voltage sensor5 Cotton overall6Conductive floor mat7 Conductive boots/heel grounding protectors8Conductive stool9 Strap (resistance 0.5 to 1.0 MΩ)10 Common reference point11 Conductive bench top12 Supply ground31212 11 10 9 8 7 64 5table 2: Conversion of units of length1 in = 25.4 mm 1 mm = 0.03937 in1 in = 2.54 cm 1 cm = 0.3937 in1 ft = 0.3048 m 1 m = 3.281 ft1 mi = 1.609 km 1 km = 0.622 mitable 3: Conversion of units of mass1 lb = 0.4536 kg 1 kg = 2.2046 lbtable 4: Conversion of units of pressure1 psi = 68.95 hPa 1 hPa = 0.0145 psiNote1 hPa = 1 mbar.table 5: Conversion of units of temperature°F95--- °C32+⋅=°C59--- °F32–()⋅=
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | Table of Contents en | 7Table of ContentsImportant Safeguards ..................................................................................................................................................3Disclaimers ......................................................................................................................................................................4About this manual .........................................................................................................................................................5Table of Contents ..........................................................................................................................................................7Section 1 - System Design and Planning............................................................................................................. 111. Wireless network design ........................................................................................................................................................... 121.1 Introduction ............................................................................................................................................................................ 121.2 Limits ....................................................................................................................................................................................... 121.3 Frequency band .................................................................................................................................................................... 122. DCN design .................................................................................................................................................................................. 142.1 Introduction ............................................................................................................................................................................ 142.2 Calculation tool ..................................................................................................................................................................... 142.3 Concepts ............................................................................................................................................................................... 142.4 Limits ....................................................................................................................................................................................... 142.5 Control capacity ................................................................................................................................................................... 152.6 Power capacity ..................................................................................................................................................................... 152.7 Cable lengths ........................................................................................................................................................................ 172.8 Examples ................................................................................................................................................................................ 192.9 Interpretation devices .......................................................................................................................................................... 213. Optical network design .............................................................................................................................................................. 223.1 Introduction ............................................................................................................................................................................ 223.2 Calculation tool ..................................................................................................................................................................... 223.3 Limits ....................................................................................................................................................................................... 223.4 Control capacity ................................................................................................................................................................... 223.5 Power capacity ..................................................................................................................................................................... 223.6 Cabling ................................................................................................................................................................................... 233.7 Example layouts .................................................................................................................................................................... 254. Camera control ............................................................................................................................................................................. 284.1 Introduction ............................................................................................................................................................................ 284.2 Scenarios ............................................................................................................................................................................... 285. Infra-red wireless language distribution .................................................................................................................................. 286. CobraNet ....................................................................................................................................................................................... 297. User set-up .................................................................................................................................................................................... 297.1 Public areas and walkways ................................................................................................................................................ 297.2 Headphones/headsets ........................................................................................................................................................ 297.3 Speaking distance ............................................................................................................................................................... 297.4 Interpreter booths ................................................................................................................................................................. 298. Device set-up ................................................................................................................................................................................ 308.1 General ................................................................................................................................................................................... 308.2 Cables ..................................................................................................................................................................................... 308.3 Temperature .......................................................................................................................................................................... 308.4 Ventilation .............................................................................................................................................................................. 308.5 Cleaning ................................................................................................................................................................................. 308.6 Storage ................................................................................................................................................................................... 308.7 Acoustic feedback ............................................................................................................................................................... 31
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | Table of Contents en | 89. Technical data .............................................................................................................................................................................. 329.1 System electrical and electro-acoustic characteristics ............................................................................................... 329.2 Environmental conditions ................................................................................................................................................... 339.3 Safety ...................................................................................................................................................................................... 339.4 Electro-magnetic compatibility .......................................................................................................................................... 349.5 Wireless devices .................................................................................................................................................................. 349.6 Miscellaneous ....................................................................................................................................................................... 35Section 2 - Central Devices ...................................................................................................................................... 3710. DCN-WCCU Wireless Central Control Unit ......................................................................................................................... 3810.1 Introduction ............................................................................................................................................................................ 3810.2 Controls, connectors and indicators ............................................................................................................................... 3810.3 Internal settings .................................................................................................................................................................... 3910.4 Installation .............................................................................................................................................................................. 4310.5 External connections ........................................................................................................................................................... 4310.6 Configuration menu ............................................................................................................................................................. 4911. DCN-WAP Wireless Access Point ......................................................................................................................................... 6011.1 Introduction ............................................................................................................................................................................ 6011.2 Firmware ................................................................................................................................................................................. 6011.3 Controls, connectors and indicators ............................................................................................................................... 6011.4 Installation .............................................................................................................................................................................. 6111.5 External connections ........................................................................................................................................................... 6311.6 Configuration ......................................................................................................................................................................... 6311.7 Operation ............................................................................................................................................................................... 6512. System configuration .................................................................................................................................................................. 6712.1 Introduction ............................................................................................................................................................................ 6712.2 Initialization ............................................................................................................................................................................. 6712.3 Wireless modes .................................................................................................................................................................... 6812.4 Microphone modes .............................................................................................................................................................. 6912.5 Repetition rate ....................................................................................................................................................................... 7012.6 Audio routing modes ........................................................................................................................................................... 7012.7 Attention chimes ................................................................................................................................................................... 7212.8 Erase requests-to-speak and speakers ........................................................................................................................... 7212.9 Floor distribution ................................................................................................................................................................... 7212.10 Intercom .................................................................................................................................................................................. 7313. System operation ......................................................................................................................................................................... 7413.1 Start the system .................................................................................................................................................................... 7413.2 Stop the system .................................................................................................................................................................... 74Section 3 - Contribution Devices............................................................................................................................ 7514. DCN-WDU Wireless Discussion Units .................................................................................................................................. 7614.1 Introduction ............................................................................................................................................................................ 7614.2 Controls, connectors and indicators ............................................................................................................................... 7614.3 Internal settings .................................................................................................................................................................... 7914.4 Modes ..................................................................................................................................................................................... 8114.5 Installation .............................................................................................................................................................................. 8314.6 Subscription .......................................................................................................................................................................... 8514.7 External connections ........................................................................................................................................................... 8614.8 Operation ............................................................................................................................................................................... 87
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | Table of Contents en | 915. DCN-MICL, DCN-MICS Pluggable Microphones ................................................................................................................ 8915.1 Introduction ............................................................................................................................................................................ 8915.2 Controls, connectors and indicators ............................................................................................................................... 8915.3 External connections ........................................................................................................................................................... 9015.4 Operation ............................................................................................................................................................................... 9016. DCN-WLIION Battery Pack ...................................................................................................................................................... 9116.1 Introduction ............................................................................................................................................................................ 9116.2 Safety ...................................................................................................................................................................................... 9116.3 Controls, connectors and indicators ............................................................................................................................... 9216.4 Installation .............................................................................................................................................................................. 9216.5 Operation ............................................................................................................................................................................... 9217. DCN-WCH05 Battery Charger ................................................................................................................................................ 9317.1 Introduction ............................................................................................................................................................................ 9317.2 Controls, connectors and indicators ............................................................................................................................... 9317.3 Installation .............................................................................................................................................................................. 9417.4 External connections ........................................................................................................................................................... 9517.5 Operation ............................................................................................................................................................................... 9618. DCN-WPS Power Supply Adapter ......................................................................................................................................... 9718.1 Introduction ............................................................................................................................................................................ 9718.2 Installation .............................................................................................................................................................................. 9718.3 External connections ........................................................................................................................................................... 9719. DCN-DDI Dual Delegate Interface .......................................................................................................................................... 9819.1 Introduction ............................................................................................................................................................................ 9819.2 Controls, connectors and indicators ............................................................................................................................... 9819.3 Internal settings .................................................................................................................................................................... 9919.4 Configuration ......................................................................................................................................................................... 9919.5 Installation ............................................................................................................................................................................10119.6 External connections .........................................................................................................................................................10120. DCN-WFCD10 Flight Case for Wireless Discussion Units ............................................................................................10321. DCN-WFCCU Flight Case for DCN-WCCU and DCN-WAP ........................................................................................103Section 4 - Appendices ........................................................................................................................................... 105A Audio levels .................................................................................................................................................................................106B Product index ..............................................................................................................................................................................108C Statements for FCC & Industry Canada ..............................................................................................................................110D Declarations ................................................................................................................................................................................111
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | Table of Contents en | 10Intentionally left blank.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 11Section 1 - System Design and Planning
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 121 Wireless network design1.1 IntroductionThe DCN Wireless has three parts: the wireless network, the DCN and the optical network. This chapter tells how to design the wireless network.1.2 LimitsLimit 1: Control capacityThe maximum number of devices in the wireless network that the central control unit can control is 150.Limit 2: Coverage areaFor a good operation of the wireless part, all wireless discussion units need to be in range of the wireless access point. The wireless access point has a typical maximum coverage area of 30 m by 30 m. To determine the exact coverage area the coverage test kit can be used.Limit 3: FrequencyThe wireless network must operate in a different frequency band than adjacent wireless computer networks (refer to section 1.3).1.3 Frequency band1.3.1 802.11g specificationThe wireless network is based on the 802.11g specification for WiFi technology. Devices that comply to the 802.11g specification operate in frequency bands between 2.4000 and 2.4835 GHz.1.3.2 Wireless computer networksWireless computer networks are also based on the 802.11g specification for WiFi technology. In the wireless computer networks, 13 overlapping channels are available (refer to figure 1.1).1.3.3 CarriersIn the wireless network of DCN Wireless, three non-overlapping wireless carriers are available (refer to figure 1.2).1.3.4 InterferenceThe wireless network of DCN Wireless can cause interference on wireless computer networks. You must make sure the DCN wireless carrier does not overlap the WLAN channel.1.3.5 ExampleRefer to figure 1.3. In the example, the WLAN channel is 3. WLAN channel 3 overlaps DCN wireless carriers 0 and 1. Therefore, use DCN wireless carrier 2.NoteYou can change the power value of the wireless access point (refer to section 11.6.4).NoteAlthough the system operates on frequencies which are license free world wide, you must be aware of country specific limitations and follow them.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 13figure 1.1: WLAN channelsfigure 1.2: DCN wireless carriers123456789101112132.412GHzGHz2.4172.4222.4272.4322.4372.4422.4472.4522.4572.4622.4672.4722.4842.4000122.412GHz2.4172.4222.4272.4322.4372.4422.4472.4522.4572.4622.4672.4722.484GHz2.400figure 1.3: Example of interference101223456789101112132.412GHz2.4172.4222.4272.4322.4372.4422.4472.4522.4572.4622.4672.4722.484GHz2.400
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 142DCN design2.1 IntroductionThe DCN Wireless has three parts: the wireless network, the DCN and the optical network. This chapter tells how to design the DCN.2.2 Calculation toolThe calculation tool makes the planning and design of the DCN easier. You can find the calculation tool on the CD-ROM that is supplied with your system.2.3 Concepts2.3.1 IntroductionThis section gives necessary data to understand the limitations in section 2.4.2.3.2 Trunk and tap-off socketsThe DCN uses two types of socket:•DCN trunk socketsUse the DCN trunk sockets to make a loop-through in the trunk of the DCN.•DCN tap-off socketsUse the DCN tap-off sockets to make more branches in the DCN. A DCN tap-off socket always regenerates the digital DCN signal.2.3.3 CablesMany devices used in the DCN have a 2 m cable. If necessary the extension cable (LBB4116) can extend the device cables.2.4 LimitsMake sure that these limits are not exceeded when you design the DCN:Limit 1: Control capacityThe maximum number of active devices that the central control unit can control is 95:• Max. 93x DCN-IDESK• Max. 2x DCN-DDI:• 1x with intercom handset• 1x with ambient microphoneThe number of passive devices is without limit (refer to section 2.5).Limit 2: Power capacity• The maximum power that one DCN socket of the central control unit can supply is 65 W. • The total power that the DCN sockets of the central control unit can supply is 130 W.• The maximum power that one DCN socket of the extension power supply can supply is 85 W • The total power that the DCN sockets of the extension power supply can supply is 255 W.Refer to section 2.6.Limit 3: Loop-throughsThe maximum number of loop-throughs in succession is 50. If there are more than 50 loop-throughs, the signal must be regenerated with a trunk splitter (LBB4114/00).Limit 4: Tap-off connectionsThe maximum number of tap-off connections in succession between the central control unit and the last tap-off in a branch is four. If there are more than four tap-off connections in succession, the system does not operate correctly.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 15Limit 5: Cable lengthsRefer to section 2.7:• With regenerative tap-offs, the maximum cable length is 250 m from the central control unit to the furthest device in any branch of the DCN.• The maximum cable length from the central control unit to the first regenerative tap-off is 100 m.• The maximum length of the cable between regenerative tap-offs is 100 m.• Open-ended cables can cause an incorrect operation of the system.2.5 Control capacity2.5.1 Active devicesActive devices are devices that can:• Receive data from the central control unit.• Transmit data to the central control unit.2.5.2 Passive devicesPassive devices can only receive data from the central control unit.2.5.3 OverviewThe table shows the active and passive devices in the DCN.2.6 Power capacity2.6.1 IntroductionEach device uses power and most devices do not have an independent power supply.2.6.2 Power consumptionThe table shows the power each device in the DCN uses.NoteThe total cable length includes the 2 m long device cables.NoteActive devices must have an address (refer to section 12.2).table 2.1: Active and passive devicesDevice TypeDCN-DDB Passive/ActiveDCN-DDI ActiveDCN-FCS PassiveDCN-IDESK Activetable 2.2: Power consumptionDevice WattDCN-DDB 2.0DCN-DDI 4.5DCN-FCS 0.9DCN-IDESK 3.6
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 162.6.3 Power supplies2.6.3.1 IntroductionThe devices that supply power to the DCN are the central control unit and the extension power supply (refer to figure 2.1 and figure 2.2). The power that the central control unit supplies includes the power that the optical network uses.2.6.3.2 DCN-WCCU2.6.3.3 DCN-EPSfigure 2.1: DCN power supply: DCN-WCCUNoteIf the power is higher than shown in figure 2.1, an overload situation occurs (refer to section 2.6.4).OK FaultFaultRS 232Network12Audio In 1 Audio Out 1 Audio In 2 Audio Out 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk12230P<65WDCN-WCCUDCN-WCCUDCN-WCCUP<130WP<130WOK FaultFaultRS 232Network12Audio In 1 Audio Out 1 Audio In 2 Audio Out 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk12230OK FaultFaultRS 232Network12Audio In 1 Audio Out 1 Audio In 2 Audio Out 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk12230figure 2.2: DCN power supply: DCN-EPSNoteIf the power is higher than shown in figure 2.2, an overload situation occurs (refer to section 2.6.4).OutOutOutInTap-offTrunkOutOutOutInTap-offTrunkDCN-EPSDCN-EPSeP<85WP < 255 W
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 172.6.4 Overload indicationEach DCN socket of the central control unit and extension power supply has a red LED that comes on to show that there is a power overload. An overload occurs when:• The necessary power for the devices is greater than that is supplied.• A short-circuit occurs.When an overload occurs, the sockets are deactivated and the connected devices do not operate. The socket checks every 8 seconds (DCN-WCCU) or 30 seconds (DCN-EPS) for power overloads.2.6.5 Extension cablesExtension cables (LBB4116) have a direct effect on the available power. The longer an extension cable, the less power is available to drive the connected devices. You must chose the length of the extension cables carefully (refer to section 2.7.5).2.7 Cable lengths2.7.1 Maximum lengthThe cable length between the central control unit and the furthest device from the central control unit must not be more than 250 m. The cable length includes the device cable and extension cables.2.7.2 To first regenerative tap-offThe total cable length between the central control unit and the first regenerative tap-off socket must not be more than 100 m. This includes the device cables and extension cables.2.7.3 Between regenerative tap-offsThe total cable length between two regenerative tap-off sockets must not be more than 100 m. This includes the device cables and extension cables.2.7.4 Open-ended DCN cables‘Open-ended’ DCN cables are DCN cables of which the socket is not connected to a device in the DCN. ‘Open-ended’ cables can cause an incorrect operation of the system. You can ‘close’ the extension cable with a termination plug (refer to the DCN Next Generation Installation and User Instructions). When the ‘open-ended’ cable is connected to a termination plug, the system operates correctly.2.7.5 Power correction2.7.5.1 IntroductionThe necessary power from a DCN socket of the central control unit and the extension power supply is affected by:• The type and number of connected devices. • The lengths of the connected extension cables.The power correction graph (refer to figure 2.3) corrects the power level to compensate for the extension cables. 2.7.5.2 CalculationTo find the correction for each DCN socket of the central control unit and the extension power supply with the graph, you must first calculate:• The total power consumption of the devices that are connected to the socket. Refer to section 2.7.5.3.• The length of the longest extension cable sequence. Refer to section 2.7.5.4.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 182.7.5.3 Total power consumptionDo as follows:1 Find the power consumption of each device from the consumption table (refer to table 2.2).2 Add together the power used by all the devices. The result is the total power consumption of the devices that are connected to the socket.2.7.5.4 Length of the longest extension cable sequenceDo as follows:1 Add together the lengths of all extension cables in the longest sequence. For example, an extension cable of 20 m is connected directly to a DCN socket of the central control unit. To the extension cable, a trunk splitter is connected. To each tap-off socket of the trunk splitter, an extension cable is connected. One extension cable has a length of 10 m, the other extension cable has a length of 40 m. The length of the longest extension cable sequence is, in this example: 20 + 40 = 60 m.2.7.5.5 GraphThe power correction graph (refer to figure 2.3) corrects the power level to compensate for the extension cables. Do as follows:1 Find the total power consumption (refer to section 2.7.5.3) on the vertical axis (Y) of the power correction graph. For example, 40 W.2 Find the length of the longest extension cable sequence (refer to section 2.7.5.4) on the horizontal axis (X) of the power correction graph. For example, 60 m.3 The intersection of both values gives the necessary power from the socket. For example, 53 W.figure 2.3: Power correction graph60555045757080856540Y: Power (Watt)35302520151020 40 60 80 100 120 140 160 180X: Extension cable (m)DCN-WCCU+ DCN-EPS200 220 240 250506111621273238434954606570768161218243036424854606672788461320263340465360667380715223037455260677582817253442516068778591827364655647383102030405060708011213243546576122436486072841326405366801530456075173451688518365573
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 192.8 Examples2.8.1 Cable lengthsPoint IThe maximum available power with 240 m of extension cables is 19 W (refer to figure 2.3). Because the first and second trunk splitter use 2.6 W, the available power at point I is 19 - 2.6 = 16.4 W.Point IIThe maximum available power with 240 m of extension cable is 25 W (refer to figure 2.3). Because the first and second trunk splitter use 2.6 W, the available power at point II is 25 - 2.6 = 22.4 W.figure 2.4: Example with cable lengthsOutOutOutInTap-offTrunkNC C C NOFaultRS 232Network12AudioIn 1 AudioOut 1 Audio In 2 AudioOut 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk1248V 48V230TrunkLBB4114/00DCN-WCCUDCN-EPS250 m (max)250 m (max)240 m240 m100 m100 m2mLBB4114/00LBB4114/00 100 m100 m5x2m=10m5x2m=10mLBB4114/002mLBB4114/00 LBB4114/00Regenerative tap-offLegendRR RRRPPPower overloadP
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 202.8.2 Power correctionfigure 2.5: Example with interpreter desks (DCN-IDESK)LBB4114/0050 m 20 mLBB4114/00LBB4114/00LBB4114/00LBB4114/003344422222NCCCNOFaultRS 232Network 12AudioIn 1 AudioOut 1 AudioIn 2 AudioOut 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk 1248V 48V230DCN-WCCU10 mtable 2.3: Example with interpreter desks (DCN-IDESK)Socket Power for devices Cable length Corrected powerTrunk 1 50.7 W 50 m 64.0 WTrunk 2 56.6 W 30 m 64.7 W
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 212.9 Interpretation devicesThe maximum number of interpreter desks you can install in an interpreter booth is six. Refer to figure 2.6 and figure 2.7 for two examples that use LBB4114/00 Trunk Splitters and LBB4115/00 Protected Trunk Splitters. With an LBB4114/00 Trunk Splitter, you can connect the interpreter desks in series (refer to figure 2.6). If an interpreter desk becomes defective, the defective desk can have an effect on all other interpreter desks that have a connection to the same trunk.With an LBB4115/00 Protected Trunk Splitter, you can connect two interpreter desks (refer to figure 2.7). If an interpreter desk becomes defective, the defective desk has no effect on all other interpreter desks that have a connection to the same trunk.figure 2.6: Interpreter booths with LBB4114/00LBB4114/00figure 2.7: Interpreter booths with LBB4115/00LBB4115/00LBB4115/00LBB4115/00
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 223 Optical network design3.1 IntroductionThe DCN Wireless has three parts: the wireless network, the DCN and the optical network. This chapter tells how to design the optical network.3.2 Calculation toolThe calculation tool makes the planning and design of the optical network easier. You can find the calculation tool on the CD-ROM that is supplied with your system.3.3 LimitsMake sure that these limits are not exceeded when you make the optical network:Limit 1: Control capacityThe maximum number of nodes in the optical network is 63 (refer to section 3.4). Limit 2: Number of devicesThe maximum number of devices that you can connect to the optical network of the central control unit is 16. The maximum number of DCN-WAP Wireless Access Points in the optical network is 1.Limit 3: Power capacityThe maximum power that the optical network sockets of the central control unit can supply is 65 W (refer to section 3.5).Limit 4: CablesRefer to section 3.6:• The maximum length of a POF cable is 50 m.• The maximum cable length (POF and GOF) of the optical network is dependent on the number of nodes in the optical network.• The minimum bend radius of a 90 degree bend in a POF cable is 110 mm.• The minimum coiling radius of a POF cable is 110 mm.3.4 Control capacityEach device in the optical network has a number of nodes (refer to table 3.1). The maximum number of nodes in the optical network is 63.3.5 Power capacity3.5.1 IntroductionEach device uses power and most devices do not have an independent power supply.3.5.2 Power consumptionThe table shows the power each device in the optical network uses.table 3.1: NodesDevice NodesDCN-CCU 2DCN-WAP 1LBB4402/00 1LBB4404/00 1LBB4410/00 1LBB4414/10 0INT-TX04 1INT-TX08 2INT-TX16 4INT-TX32 8PRS-4DEX4 1table 3.2: Power consumptionDevice WattDCN-WAP 4LBB4402/00 7. 6LBB4404/00 10.5 LBB4410/00 3.9LBB4414/10 4.6PRS-4DEX4 6.0NoteThe Integrus transmitters do not use power from the system.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 233.5.3 Power supplyThe device that supplies power to the optical network is the central control unit, refer to figure 3.1. The power that the central control unit supplies includes the power that the DCN uses.If more power is necessary, you must install external power supplies in the optical network. The devices below can connect to external power supplies:• LBB4410/00 Network Splitter (refer to the DCN Next Generation Installation and User Instructions).• LBB4414/10 Fiber Interface (refer to the DCN Next Generation Installation and User Instruction).3.5.4 Overload indicationEach optical network socket of the central control unit has a red LED that comes on to show that there is a power overload. An overload occurs when the necessary power for the devices is greater than that supplied. The sockets are deactivated and the devices connected to the central control unit do not operate. The socket checks every 8 seconds for power overloads.3.6 Cabling3.6.1 IntroductionMany devices in the optical network have two optical network sockets that are interchangeable. You can use the two optical network sockets to make a redundant ring.3.6.2 DefinitionsThe optical network uses two types of cable:•POFPlastic Optical Fiber.•GOFGlass Optical Fiber.figure 3.1: Optical network power supplyOK FaultFaultRS 232Network12Audio In 1 Audio Out 1 Audio In 2 Audio Out 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk12230P<65WDCN-WCCUDCN-WCCUDCN-WCCUP<65WP<130WOK FaultFaultRS 232Network12Audio In 1 Audio Out 1 Audio In 2 Audio Out 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk12230OK FaultFaultRS 232Network12Audio In 1 Audio Out 1 Audio In 2 Audio Out 2MainsPort 2115:100-120V 50-60Hz T2.5A 250V230:220-240V 50-60Hz T2A H 250VRS 232 Port 1Trunk12230NoteIf only one of the optical network sockets has a power overload, the two overload LEDs come on.NoteThe two optical network connectors are the same.
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 243.6.3 Optical fiber lengthBecause of optical attenuation, the maximum length of optical network cables (LBB4416) is 50 m. You can use GOF and fiber interfaces to increase the distance between devices to a maximum of 1500 m.3.6.4 Cable couplersYou can use the LBB4419/00 Cable Couplers to connect optical network cables to each other. A cable coupler causes optical attenuation. Each cable coupler decreases the maximum distance between two devices in the optical network (normally 50 meters) with 20 meters.3.6.5 Maximum cable lengthThe maximum cable length (LBB4416 and GOF) of the optical network is dependent on:• The number of nodes• The number of LBB4414/10 Fiber InterfacesDo as follows:1 Find the number of nodes of each device from the node value table (refer to table 3.1). Add together the nodes of all devices.2 With the value of step 1, use the graph (refer to figure 3.2) to find the maximum cable length without LBB4414/10 Fiber Interfaces.3 Count the number of LBB4414/10 Fiber Interfaces. Each fiber interface decreases the maximum cable length from step 2 with 18 m.NoteIf the distance between two devices is less than 100 m, use a network splitter between devices to remove the use of fiber interfaces. Use only the trunk sockets of the network splitter in this case.figure 3.2: Cable correction graph9505010152025Nodes30 35 40 45 50 55 60 63105011501250135014501550165017501850195020502150Max. cable length (m)
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 253.6.6 BendingThe minimum bend radius of a 90 degree bend in an LBB4416 cable is 110 mm (refer to figure 3.3). A 180 degree bend is the same as two 90 degree bends.3.6.7 CoilingThe minimum coiling radius of an LBB4416 cable is 110 mm (refer to figure 3.4).3.7 Example layouts3.7.1 IntroductionThe number and type of devices that make the optical network give the layout of the optical network. This chapter shows examples of the possible layouts of optical networks.figure 3.3: Bend radiusfigure 3.4: Coiling radiusR=110 mmR=110 mm
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 263.7.2 Basic optical networkRefer to figure 3.5 for an example of a basic optical network.3.7.3 Extended optical networkRefer to figure 3.6 for an example of an extended optical network.3.7.4 Redundant cablesThe example of the extended optical network (refer to figure 3.6) has no redundant cable. If the cable between the central control unit (DCN-WCCU) and the wireless access point (DCN-WAP) breaks, the central control unit cannot transmit data to the wireless access point. A solution for this problem is to use redundant cable (refer to figure 3.7 for an example).The example of the system without redundant cable (refer to figure 3.6) has no connection between the cobranet interface (LBB4404/00) and the central control unit (DCN-WCCU). The example of the system with redundant cable has a connection between the Cobranet Interface and the central control unit. This connection makes a ring. If a cable breaks, the optical network continues to operate. The maximum total power of all devices in the redundant optical network is 65 W. If the optical network is defective near the central control unit, the other socket can supply power to all of the optical network.figure 3.5: Basic optical networkfigure 3.6: Extended optical networkDCN-WCCUDCN-WAPDCN-WCCUDCN-WAPLBB4404/00INT-TXPRS-4DEX4figure 3.7: Redundant optical networkDCN-WCCUDCN-WAPLBB4404/00INT-TXPRS-4DEX4
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 273.7.5 Tap-offsThe network splitter (LBB4410/00) lets you make tap-offs (refer to figure 3.8 for an example). Tap-offs cannot be redundant. If the cable between the network splitter and the digital audio expander (PRS-4DEX4) becomes defective, the digital audio expander has no connection to the central control unit.figure 3.8: Redundant optical network with tap-offDCN-WCCUDCN-WAPPRS-4DEX4 INT-TXLBB4410/00
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 284 Camera control4.1 IntroductionThe central control unit can automatically point video cameras in the direction of the delegate or chairman who speaks. You can connect video cameras to the central control unit through a video switcher or directly to the central control unit. Use a video switcher to connect more that one video camera and video display to the central control unit.4.2 ScenariosThese scenarios are possible:• Direct camera control in a system without a DCN control PC. Refer to the DCN Next Generation Installation and User Instructions.• Camera control through a video switcher in a system without a DCN control PC. Refer to the DCN Next Generation Installation and User Instructions.5 Infra-red wireless language distributionYou can connect the system to an Integrus digital infra-red language distribution system. This system has a transmitter, radiators and receivers.NoteRefer to the Integrus Installation and User Instructions for more data.figure 5.1: Integrus
Bosch Security Systems | 2007-02 | 9922 141 70691 enDCN Wireless | Installation and User Instructions | System Design and Planning en | 296 CobraNetCobraNet is a standard for the transport of real-time digital audio and control data through an Ethernet network. A CobraNet network can transport a maximum of 64 channels of 48 kHz, 20-bit audio through a 100 Mbit link connection in each direction. Many manufacturers of professional audio devices support the CobraNet standard.The DCN Wireless digital congress network can connect to CobraNet networks with the LBB4404/00 Cobranet Interface. For example, you can use the LBB4404/00 Cobranet Interface to:• Benefit from Ethernet infrastructure• Transport audio signals over large distancesPC data, for example data from the DCN Wireless Open Interface can co-exist with CobraNet data on the same Ethernet network when you use managed Ethernet switches that are approved by Peak Audio.7User set-up7.1 Public areas and walkwaysKeep public areas clear of system and extension cables and connections.7.2 Headphones/headsetsPut headphones or headsets with:• Wireless discussion units.• Interpreter desks.• Channel selector.• Integrus receivers.Acoustic feedback between the connected headphones or headsets and the microphone occurs when:• The volume level is set too high.• The headphones are too close to activated microphones.7.3 Speaking distanceThe recommended speaking distance from the microphone is 0.2 m to 0.4 m.7.4 Interpreter boothsMake sure each interpreter booth has sufficient dimensions. The International Organization for Standardization (ISO) gives the specification for interpreter booths. Refer to standard ISO 2603 ‘Booths for simultaneous interpretation - General characteristics and equipment’ for more data.NoteRefer to the DCN Next Generation Installation and User Instructions for the LBB4404/00 Cobranet Interface.NoteRefer to the website of Peak Audio (www.peakaudio.com) for:• More data about CobraNet networks.• A list of approved Ethernet switches.

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