Bosch DCN Next Generation Assembly Instructions

Installation and User Instructions
Digital Congress Networken
DCN Next Generation

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DCN Next Generation | Installation and User Instructions | Important Safeguards en | 3
Important Safeguards
Before you install or operate the DCN Next Generation
digital congress network, you must read the Important
Safety Instructions. The Important Safety Instructions
are supplied together with the central control unit.

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DCN Next Generation | Installation and User Instructions | Disclaimers en | 4
Disclaimers
CobraNet is a trademark of Peak Audio — a division of
Cirrus Logic, Inc. — in the United States and/or other
countries.

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DCN Next Generation | Installation and User Instructions | About this manual en | 5
About this manual
Function
The Installation and User Instructions gives the
installers and the operators the necessary data to install,
configure and operate the DCN Next Generation digital
congress network.
Digital version
The 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.
Precautions and notes
The Installation and User Instructions uses precautions
and notes. The precaution gives the effect if you do not
obey the instructions. These are the types:
•Note
A note gives more data.
•Caution
If you do not obey the caution, you can cause
damage to the equipment.
•Warning
If you do not obey the warning, you can cause
personal injury or death.
Signs
The Installation and User Instructions shows each
precaution 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.
Precaution
General sign for cautions and warnings.
Precaution
Risk of electric shock.
Precaution
Risk of electro-static discharges (refer to the
section ’Electro-static discharges’).
Note
General sign for notes.
Note
Refer to another information source.

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Electro-static discharges
Electro-static discharges can damage electric
components. You must take measures to prevent
electro-static discharges when you touch PCBs (refer to
figure 1).
Conversion tables
Length, mass and temperature are in SI units. Refer to
the data below to change SI units to imperial units.
figure 1: ESD prevention
table 1: ESD prevention
No. Description
1 Safety isolating transformer
2Distribution supply box
3 Conductive compartment trays
4Electro-static voltage sensor
5 Cotton overall
6Conductive floor mat
7 Conductive boots/heel grounding protectors
8Conductive stool
9 Strap (resistance 0.5 to 1.0 MΩ)
10 Common reference point
11 Conductive bench top
12 Supply ground
312
12 11 10 9 8 7 6
4 5
table 2: Conversion of units of length
1 in = 25.4 mm 1 mm = 0.03937 in
1 in = 2.54 cm 1 cm = 0.3937 in
1 ft = 0.3048 m 1 m = 3.281 ft
1 mi = 1.609 km 1 km = 0.622 mi
table 3: Conversion of units of mass
1 lb = 0.4536 kg 1 kg = 2.2046 lb
table 4: Conversion of units of pressure
1 psi = 68.95 hPa 1 hPa = 0.0145 psi
Note
1 hPa = 1 mbar.
table 5: Conversion of units of temperature
°F9
5
---°C32+⋅=
°C5
9
---°F32–()⋅=

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DCN Next Generation | Installation and User Instructions | Table of Contents en | 7
Table of Contents
Important Safeguards ..................................................................................................................................................3
Disclaimers ......................................................................................................................................................................4
About this manual .........................................................................................................................................................5
Table of Contents ..........................................................................................................................................................7
Section 1 - System Design and Planning............................................................................................................. 13
1. DCN design .................................................................................................................................................................................. 14
1.1 Introduction ............................................................................................................................................................................ 14
1.2 Calculation tool ..................................................................................................................................................................... 14
1.3 Concepts ............................................................................................................................................................................... 14
1.4 Limits ....................................................................................................................................................................................... 14
1.5 Control capacity ................................................................................................................................................................... 15
1.6 Power capacity ..................................................................................................................................................................... 15
1.7 Cable lengths ........................................................................................................................................................................ 17
1.8 Examples ................................................................................................................................................................................ 19
1.9 Interpretation devices .......................................................................................................................................................... 22
2. Optical network design .............................................................................................................................................................. 23
2.1 Introduction ............................................................................................................................................................................ 23
2.2 Calculation tool ..................................................................................................................................................................... 23
2.3 Limits ....................................................................................................................................................................................... 23
2.4 Control capacity ................................................................................................................................................................... 23
2.5 Power capacity ..................................................................................................................................................................... 23
2.6 Cabling ................................................................................................................................................................................... 24
2.7 Example layouts .................................................................................................................................................................... 26
3. Wireless language distribution ................................................................................................................................................. 29
4. CobraNet ....................................................................................................................................................................................... 30
5. User set-up .................................................................................................................................................................................... 31
5.1 Public areas ........................................................................................................................................................................... 31
5.2 Headphones/headsets ........................................................................................................................................................ 31
5.3 Speaking distance ............................................................................................................................................................... 31
5.4 Interpreter booths ................................................................................................................................................................. 31
6. Device set-up ................................................................................................................................................................................ 32
6.1 General ................................................................................................................................................................................... 32
6.2 Cables ..................................................................................................................................................................................... 32
6.3 Temperature .......................................................................................................................................................................... 32
6.4 Ventilation .............................................................................................................................................................................. 32
6.5 Cleaning ................................................................................................................................................................................. 32
6.6 Storage ................................................................................................................................................................................... 32
6.7 Acoustic feedback ............................................................................................................................................................... 33
7. Technical data .............................................................................................................................................................................. 34
7.1 System electrical and electro-acoustic characteristics ............................................................................................... 34
7.2 Environmental conditions ................................................................................................................................................... 35
7.3 Safety ...................................................................................................................................................................................... 35
7.4 Electro-magnetic compatibility .......................................................................................................................................... 36
7.5 Miscellaneous ....................................................................................................................................................................... 36
Section 2 - Central Devices ...................................................................................................................................... 39
8. DCN-CCU Central Control Unit ............................................................................................................................................... 40

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8.1 Introduction ............................................................................................................................................................................ 40
8.2 Controls, connectors and indicators ............................................................................................................................... 41
8.3 Internal settings .................................................................................................................................................................... 42
8.4 Installation .............................................................................................................................................................................. 46
8.5 External connections ........................................................................................................................................................... 46
8.6 Downloading ......................................................................................................................................................................... 51
8.7 Initialization ............................................................................................................................................................................. 51
8.8 Configuration ......................................................................................................................................................................... 52
8.9 Camera control configuration ............................................................................................................................................ 57
8.10 Configuration menu ............................................................................................................................................................. 62
9. DCN-CCUB Basic Central Control Unit ................................................................................................................................ 72
9.1 Introduction ............................................................................................................................................................................ 72
9.2 Controls, connectors and indicators ............................................................................................................................... 72
9.3 Internal settings .................................................................................................................................................................... 73
9.4 Installation .............................................................................................................................................................................. 73
9.5 External connections ........................................................................................................................................................... 73
9.6 Downloading ......................................................................................................................................................................... 75
9.7 Initialization ............................................................................................................................................................................. 75
9.8 Configuration ......................................................................................................................................................................... 75
9.9 Camera control configuration ............................................................................................................................................ 75
9.10 Configuration menu ............................................................................................................................................................. 75
10. DCN-NCO Network Controller ................................................................................................................................................ 76
10.1 Introduction ............................................................................................................................................................................ 76
10.2 Controls, connectors and indicators ............................................................................................................................... 77
10.3 Internal settings .................................................................................................................................................................... 78
10.4 Downloading ......................................................................................................................................................................... 80
10.5 Installation .............................................................................................................................................................................. 80
10.6 External connections ........................................................................................................................................................... 80
10.7 Initialization ............................................................................................................................................................................. 85
10.8 Configuration ......................................................................................................................................................................... 85
10.9 Camera control configuration ............................................................................................................................................ 87
10.10 Configuration menu ............................................................................................................................................................. 89
11. LBB4402/00 Audio Expander .................................................................................................................................................. 96
11.1 Introduction ............................................................................................................................................................................ 96
11.2 Controls, connectors and indicators ............................................................................................................................... 96
11.3 Installation .............................................................................................................................................................................. 97
11.4 External connections ........................................................................................................................................................... 98
11.5 Configuration menu ...........................................................................................................................................................103
12. PRS-4DEX4 Digital Audio Expander ....................................................................................................................................109
12.1 Introduction ..........................................................................................................................................................................109
12.2 Controls, connectors and indicators .............................................................................................................................109
12.3 Installation ............................................................................................................................................................................110
12.4 External connections .........................................................................................................................................................111
12.5 Configuration menu ...........................................................................................................................................................114
13. LBB4404/00 Cobranet Interface ..........................................................................................................................................120
13.1 Introduction ..........................................................................................................................................................................120
13.2 Controls, connectors and indicators .............................................................................................................................120
13.3 Installation ............................................................................................................................................................................121

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13.4 External connections .........................................................................................................................................................122
13.5 Configuration menu ...........................................................................................................................................................124
13.6 CobraNet Discovery ..........................................................................................................................................................129
13.7 CNConfig .............................................................................................................................................................................131
Section 3 - Contribution Devices.......................................................................................................................... 135
14. DCN-DIS Discussion Units .....................................................................................................................................................136
14.1 Introduction ..........................................................................................................................................................................136
14.2 Controls, connectors and indicators .............................................................................................................................136
14.3 Internal settings ..................................................................................................................................................................140
14.4 Modes ...................................................................................................................................................................................142
14.5 Installation ............................................................................................................................................................................143
14.6 External connections .........................................................................................................................................................147
14.7 Operation .............................................................................................................................................................................148
15. DCN-CON Concentus Delegate Units ................................................................................................................................149
15.1 Introduction ..........................................................................................................................................................................149
15.2 Controls, connectors and indicators .............................................................................................................................149
15.3 Internal settings ..................................................................................................................................................................152
15.4 Installation ............................................................................................................................................................................154
15.5 External connections .........................................................................................................................................................155
15.6 Operation .............................................................................................................................................................................158
16. DCN-CONCM Concentus Chairman Unit ...........................................................................................................................159
16.1 Introduction ..........................................................................................................................................................................159
16.2 Controls, connectors and indicators .............................................................................................................................159
16.3 Internal settings ..................................................................................................................................................................159
16.4 Installation ............................................................................................................................................................................159
16.5 External connections .........................................................................................................................................................159
16.6 Operation .............................................................................................................................................................................159
17. DCN-MICL, DCN-MICS Pluggable Microphones ..............................................................................................................160
17.1 Introduction ..........................................................................................................................................................................160
17.2 Controls, connectors and indicators .............................................................................................................................160
17.3 External connections .........................................................................................................................................................161
17.4 Operation .............................................................................................................................................................................161
18. LBB3555/00 Intercom Handset ............................................................................................................................................162
Section 4 - Flush-mounted Devices..................................................................................................................... 163
19. Installation ....................................................................................................................................................................................164
19.1 Introduction ..........................................................................................................................................................................164
19.2 Methods ...............................................................................................................................................................................164
19.3 Recesses .............................................................................................................................................................................164
20. DCN-FPT Flush Positioning Tool ...........................................................................................................................................168
21. DCN-DDI Dual Delegate Interface ........................................................................................................................................169
21.1 Introduction ..........................................................................................................................................................................169
21.2 Controls, connectors and indicators .............................................................................................................................169
21.3 Internal settings ..................................................................................................................................................................170
21.4 Configuration .......................................................................................................................................................................170
21.5 Installation ............................................................................................................................................................................175
21.6 External connections .........................................................................................................................................................175
22. DCN-FMIC Microphone Connection Panel .........................................................................................................................178
22.1 Introduction ..........................................................................................................................................................................178

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22.2 Controls, connectors and indicators .............................................................................................................................178
22.3 Internal settings ..................................................................................................................................................................178
22.4 Installation ............................................................................................................................................................................178
22.5 External connections .........................................................................................................................................................179
23. DCN-FMICB Microphone Control Panel .............................................................................................................................180
23.1 Introduction ..........................................................................................................................................................................180
23.2 Control, connectors and indicators ................................................................................................................................180
23.3 Installation ............................................................................................................................................................................180
23.4 External connections .........................................................................................................................................................180
23.5 Operation .............................................................................................................................................................................180
24. DCN-FPRIOB Priority Panel ...................................................................................................................................................181
24.1 Introduction ..........................................................................................................................................................................181
24.2 Controls, connectors and indicators .............................................................................................................................181
24.3 Installation ............................................................................................................................................................................181
24.4 External connections .........................................................................................................................................................181
24.5 Operation .............................................................................................................................................................................181
25. DCN-FLSP Loudspeaker Panel .............................................................................................................................................182
25.1 Introduction ..........................................................................................................................................................................182
25.2 Controls, connectors and indicators .............................................................................................................................182
25.3 Installation ............................................................................................................................................................................182
25.4 External connections .........................................................................................................................................................182
26. DCN-FV(CRD) Voting Panel ...................................................................................................................................................183
26.1 Introduction ..........................................................................................................................................................................183
26.2 Controls, connectors and indicators .............................................................................................................................183
26.3 Installation ............................................................................................................................................................................184
26.4 External connections .........................................................................................................................................................184
26.5 Operation .............................................................................................................................................................................186
27. DCN-FCS Channel Selector ..................................................................................................................................................187
27.1 Introduction ..........................................................................................................................................................................187
27.2 Controls, connectors and indicators .............................................................................................................................187
27.3 Internal settings ..................................................................................................................................................................188
27.4 Installation ............................................................................................................................................................................190
27.5 External connections .........................................................................................................................................................190
27.6 External headphones socket ............................................................................................................................................191
27.7 Level reduction plug ..........................................................................................................................................................192
28. DCN-FVU Voting Unit ...............................................................................................................................................................193
28.1 Introduction ..........................................................................................................................................................................193
28.2 Controls, connectors and indicators .............................................................................................................................193
28.3 Installation ............................................................................................................................................................................194
28.4 External connections .........................................................................................................................................................195
28.5 Operation .............................................................................................................................................................................197
29. DCN-FCOUP Couple ...............................................................................................................................................................198
30. DCN-FEC End Caps ................................................................................................................................................................199
31. DCN-TTH Tabletop Housing ..................................................................................................................................................200
32. DCN-FBP panels .......................................................................................................................................................................201
Section 5 - Interpretation Devices........................................................................................................................ 203
33. DCN-IDESK Interpreter Desks ...............................................................................................................................................204
33.1 Introduction ..........................................................................................................................................................................204

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33.2 Controls, connectors and indicators .............................................................................................................................204
33.3 Installation ............................................................................................................................................................................207
33.4 External connections .........................................................................................................................................................208
33.5 Operation .............................................................................................................................................................................210
33.6 Configuration .......................................................................................................................................................................213
33.7 Operation .............................................................................................................................................................................217
Section 6 - Installation Devices ............................................................................................................................ 219
34. DCN-EPS Extension Power Supply ......................................................................................................................................220
34.1 Introduction ..........................................................................................................................................................................220
34.2 Controls, connectors and indicators .............................................................................................................................220
34.3 Internal settings ..................................................................................................................................................................221
34.4 Installation ............................................................................................................................................................................222
34.5 External connections .........................................................................................................................................................222
35. LBB4114/00 Trunk Splitter ....................................................................................................................................................224
35.1 Introduction ..........................................................................................................................................................................224
35.2 Controls, connectors and indicators .............................................................................................................................224
35.3 Installation ............................................................................................................................................................................224
35.4 External connections .........................................................................................................................................................224
36. LBB4115/00 Protected Trunk Splitter .................................................................................................................................225
36.1 Introduction ..........................................................................................................................................................................225
36.2 Controls, connectors and indicators .............................................................................................................................225
36.3 Installation ............................................................................................................................................................................225
36.4 External connections .........................................................................................................................................................225
37. LBB4116 Extension Cables ...................................................................................................................................................226
37.1 Introduction ..........................................................................................................................................................................226
37.2 Connectors ..........................................................................................................................................................................226
37.3 Custom-made cables ........................................................................................................................................................226
38. LBB4119/00 DCN Connectors .............................................................................................................................................227
39. LBB4117/00 Cable Locking Clamps ...................................................................................................................................228
40. LBB4118/00 Cable Termination Plug ..................................................................................................................................229
41. LBB4410/00 Network Splitter ...............................................................................................................................................230
41.1 Introduction ..........................................................................................................................................................................230
41.2 Controls, connectors and indicators .............................................................................................................................230
41.3 Internal settings ..................................................................................................................................................................231
41.4 Installation ............................................................................................................................................................................232
41.5 External connections .........................................................................................................................................................232
41.6 Operation .............................................................................................................................................................................234
42. LBB4414/10 Fiber Interface ..................................................................................................................................................235
42.1 Introduction ..........................................................................................................................................................................235
42.2 Controls, connectors and indicators .............................................................................................................................235
42.3 Installation ............................................................................................................................................................................236
42.4 External connections .........................................................................................................................................................236
42.5 Operation .............................................................................................................................................................................237
43. LBB4416 Optical Network Cables .......................................................................................................................................238
43.1 Introduction ..........................................................................................................................................................................238
43.2 Connectors ..........................................................................................................................................................................238
43.3 Wiring ...................................................................................................................................................................................239
43.4 Custom-made cables ........................................................................................................................................................239

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43.5 Technical data .....................................................................................................................................................................239
44. LBB4417/00 Optical Network Connectors ........................................................................................................................240
45. LBB4418/00 Cable-connector Tool Kit ...............................................................................................................................241
45.1 Introduction ..........................................................................................................................................................................241
45.2 Contents ...............................................................................................................................................................................241
45.3 Connector components ....................................................................................................................................................243
45.4 Assemble the Cable-connector ......................................................................................................................................244
46. LBB4419/00 Cable Couplers ................................................................................................................................................254
Section 7 - Peripheral Devices .............................................................................................................................. 255
47. DCN-DDB Data Distribution Board ......................................................................................................................................256
47.1 Introduction ..........................................................................................................................................................................256
47.2 Controls, connectors and indicators .............................................................................................................................256
47.3 Configuration .......................................................................................................................................................................257
47.4 Hall displays ........................................................................................................................................................................259
47.5 Signaling ..............................................................................................................................................................................263
47.6 Remote controls .................................................................................................................................................................265
47.7 Installation ............................................................................................................................................................................267
48. LBB4157/00 Chip Card Encoder .........................................................................................................................................269
48.1 Introduction ..........................................................................................................................................................................269
48.2 Installation ............................................................................................................................................................................269
48.3 Operation .............................................................................................................................................................................269
49. DCN-IDCRD Chip Cards ........................................................................................................................................................270
Section 8 - Troubleshooting .................................................................................................................................. 271
50. Procedure ....................................................................................................................................................................................272
51. Problems and hints ....................................................................................................................................................................273
Section 9 - Appendices ........................................................................................................................................... 277
A Audio levels .................................................................................................................................................................................278
B Language list ..............................................................................................................................................................................282
C Product index ..............................................................................................................................................................................284

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Section 1 - System Design and Planning

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1DCNdesign
1.1 Introduction
The DCN Next Generation has two parts: the DCN and
the optical network. This chapter tells how to design the
DCN.
1.2 Calculation tool
The 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.
1.3 Concepts
1.3.1 Introduction
This section gives necessary data to understand the
limitations in section 1.4.
1.3.2 Trunk and tap-off sockets
The DCN uses two types of socket:
•DCN trunk sockets
Use the DCN trunk sockets to make a loop-through
in the trunk of the DCN.
•DCN tap-off sockets
Use the DCN tap-off sockets to make more branches
in the DCN. A DCN tap-off socket always
regenerates the digital DCN signal.
1.3.3 Cables
Many devices used in the DCN have a 2 m cable. If
necessary the extension cable (LBB4116) can extend the
device cables.
1.4 Limits
Make sure these limits are not exceeded when you
design the DCN:
Limit 1: Control capacity
The maximum number of active devices in a DCN that
a central control unit can control is 245. For the
maximum number of active devices that a multi CCU
can control, refer to section 2.7.3. The number of
passive devices is without limit (refer to section 1.5).
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 1.6.
Limit 3: Loop-throughs
The 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 connections
The 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.
Limit 5: Cable lengths
Refer to section 1.7:
• 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.
Note
The total cable length includes the 2 m long
device cables.

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1.5 Control capacity
1.5.1 Active devices
Active devices are devices that can:
• Receive data from the central control unit.
• Transmit data to the central control unit.
1.5.2 Passive devices
Passive devices can only receive data from the central
control unit.
1.5.3 Overview
The following table shows the active and passive devices
in the DCN.
1.6 Power capacity
1.6.1 Introduction
Each device uses power, and most devices do not have
an independent power supply.
1.6.2 Power consumption
The following table shows the power each device in the
DCN uses.
Note
Active devices must have an address (refer to
section 8.7).
table 1.1: Active and passive devices
Device Type
DCN-CON Active
DCN-CONCS Active
DCN-CONFF Active
DCN-CONCM Active
DCN-DDB Passive/Active
DCN-DDI Active
DCN-DISL Active
DCN-DISS Active
DCN-DISCS Active
DCN-DISD Active
DCN-DISDCS Active
DCN-DISV Active
DCN-DISVCS Active
DCN-EPS Passive
DCN-FCS Passive
DCN-FVU Active
DCN-FVU-CN Active
DCN-IDESK Active
LB B4114/00 Pass iv e
LBB4115/00 Passive
table 1.2: Power consumption
Device Watt
DCN-CON 3.4
DCN-CONCS 3.7
DCN-CONFF 4.2
DCN-CONCM 4.2
DCN-DDB 2.0
DCN-DDI 4.5
DCN-DISL 2.75
DCN-DISS 2.75
DCN-DISCS 2.9
DCN-DISD 2.8
DCN-DISDCS 3.15
DCN-DISV 3.05
DCN-DISVCS 3.20
DCN-EPS 0.8
DCN-FCS 0.9
DCN-FVU 1.0
DCN-FVU-CN 1.0
DCN-IDESK 3.6
LB B4114/00 1. 3
LBB4115/00 1.4
Note
The power consumption of the DCN-DDI
includes the power consumption of all
flush-mounted devices that you can connect to
it.

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1.6.3 Power supplies
1.6.3.1 Introduction
The devices that supply power to the DCN are the
central control unit and the extension power supply
(refer to figure 1.1 and figure 1.3). The power that the
central control unit supplies includes the power that the
optical network uses.
1.6.3.2 DCN-CCU
1.6.3.3 DCN-CCUB
1.6.3.4 DCN-EPS
figure 1.1: DCN power supply: DCN-CCU
Note
If the power taken is higher than shown in figure
1.1, an overload situation will occur (refer to
section 1.6.4).
OK Fault
Fault
RS 232
Network
12
Audio In 1 Audio Out 1 Audio In 2 Audio Out 2
Mains
Port 2
115:100-120V 50-60Hz T2.5A 250V
230:220-240V 50-60Hz T2A H 250V
RS 232 Port 1
Trunk
12
230
P<65W
DCN-CCU
DCN-CCU
DCN-CCU
P<130W
P<130W
OK Fault
Fault
RS 232
Network
12
Audio In 1 Audio Out 1 Audio In 2 Audio Out 2
Mains
Port 2
115:100-120V 50-60Hz T2.5A 250V
230:220-240V 50-60Hz T2A H 250V
RS 232 Port 1
Trunk
12
230
OK Fault
Fault
RS 232
Network
12
Audio In 1 Audio Out 1 Audio In 2 Audio Out 2
Mains
Port 2
115:100-120V 50-60Hz T2.5A 250V
230:220-240V 50-60Hz T2A H 250V
RS 232 Port 1
Trunk
12
230
figure 1.2: DCN power supply: DCN-CCUB
figure 1.3: DCN power supply: DCN-EPS
Mains
115:100-120V 50-60Hz T2.5A 250V
230:220-240V 50-60Hz T2A H 250V
Trunk
12
Avis
Caution
Riskof electrics hock.
Donotopen.
Riskof electrics hock.
Donotopen.
230
Audio In 1 AudioOut 1 Audio In 2 Audio Out 2
RS 232
Mains
115:100-120V 50-60Hz T2.5A 250V
230:220-240V 50-60Hz T2A H 250V
Trunk
12
Avis
Caution
Riskof electrics hock.
Donotopen.
Riskof electrics hock.
Donotopen.
230
Audio In 1 AudioOut 1 Audio In 2 Audio Out 2
RS 232
P<65W
DCN-CCUB
DCN-CCUB
P<130W
Out
Out
OutIn
Tap-off
Trunk
Out
Out
OutIn
Tap-off
Trunk
DCN-EPS
DCN-EPS
e
P<85W
P < 255 W

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1.6.4 Overload indication
Each 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, that socket is deactivated,
and the connected devices do not operate. The socket
checks every 8 seconds (DCN-CCU, DCN-CCUB) or
30 seconds (DCN-EPS) for power overloads.
1.6.5 Extension cables
Extension 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 1.7.5).
1.7 Cable lengths
1.7.1 Maximum length
The 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.
1.7.2 To first regenerative tap-off
The 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 cable and
extension cables.
1.7.3 Between regenerative tap-offs
The total cable length between two regenerative tap-off
sockets must not be more than 100 m. This includes the
device cables and extension cables.
1.7.4 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 the system to operate
incorrectly. You can ‘close’ the extension cable with a
termination plug (refer to section 40). When the
‘open-ended’ cable is connected to a termination plug,
the system operates correctly.
1.7.5 Power correction
1.7.5.1 Introduction
The 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 1.4) corrects
the power level to compensate for the extension cables.
1.7.5.2 Calculation
To 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 1.7.5.3.
• The length of the longest extension cable sequence.
Refer to section 1.7.5.4.

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1.7.5.3 Total power consumption
Do as follows:
1 Find the power consumption of each device from the
consumption table (refer to table 1.2).
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.
1.7.5.4 Length of the longest extension cable
sequence
Do 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.
1.7.5.5 Graph
The power correction graph (refer to figure 1.4) corrects
the power level to compensate for the extension cables.
Do as follows:
1 Find the total power consumption (refer to section
1.7.5.3) 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 1.7.5.4) on the horizontal
axis (X) of the power correction graph. For example,
60 m.
The intersection of both values gives the necessary
power from the socket. In this example it is 53 W.
figure 1.4: Power correction graph
60
55
50
45
75
70
80
85
65
40
Y: Power (Watt)
35
30
25
20
15
10
20 40 60 80 100 120 140 160 180
X: Extension cable (m)
DCN-CCU, DCN-CCUB
+ DCN-EPS
200 220 240 250
5
0
6
11
16
21
27
32
38
43
49
54
60
65
70
76
81
6
12
18
24
30
36
42
48
54
60
66
72
78
84
6
13
20
26
33
40
46
53
60
66
73
80
7
15
22
30
37
45
52
60
67
75
82
8
17
25
34
42
51
60
68
77
85
9
18
27
36
46
55
64
73
83
10
20
30
40
50
60
70
80
11
21
32
43
54
65
76
12
24
36
48
60
72
84
13
26
40
53
66
80
15
30
45
60
75
17
34
51
68
85
18
36
55
73

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1.8 Examples
All examples use the power correction graph (refer to
figure 1.4).
1.8.1 Discussion devices
figure 1.5: Example with discussion units (DCN-DISS)
DCN-DIS
DCN-DIS
DCN-DIS
DCN-DIS
DCN-DIS
DCN-DIS
DCN-DIS
DCN-DIS
LBB4114/00
LBB4114/00
LBB4114/00
LBB4114/00
LBB4114/00
10 m 10 m
20 m
6x
6x
3x
3x
5x
5x
5x
5x
10 m
10 m
DCN-CCUB
Mains
115:100-120V 50-60Hz T2.5A 250V
230:220-240V 50-60Hz T2A H 250V
Trunk
12
Avis
Caution
Riskofelectricshock.
Donot open.
Riskofelectricshock.
Donot open.
230
AudioIn 1 Audio Out 1 AudioIn 2 Audio Out 2
RS 232
table 1.3: Example with discussion units (DCN-DISS)
Socket Extension cable Power for devices Corrected power
Tru nk 1 40 m 53 .4 W 64 .1 W
Tru nk 2 20 m 57.6 W 62.8 W

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DCN Next Generation | Installation and User Instructions | System Design and Planning en | 20
1.8.2 Conference devices
figure 1.6: Example with conference units (DCN-CON)
10 m 10 m
20 m
10 m
10 m
LBB4114/00
LBB4114/00
LBB4114/00
LBB4114/00
LBB4114/00
5x
5x
2x
2x
4x
4x
4x
4x
NC C C NO
Fault
RS 232
Network
12
AudioIn 1 Audio Out 1 AudioIn 2 Audio Out 2
Mains
Port 2
115:100-120V 50-60Hz T2.5A 250V
230:220-240V 50-60Hz T2A H 250V
RS 232 Port1
Trunk
12
48V 48V
230
DCN-CCU
DCN-CON
DCN-CON
DCN-CON
DCN-CON
DCN-CON
DCN-CON
DCN-CON
DCN-CON
table 1.4: Example with conference units (DCN-CON)
Socket Extension cable Power for devices Corrected power
Trunk 1 40 m 51.5 W 61.8 W
Tru nk 2 20 m 57.0 W 62.2 W