Bosch DCN Next Generation User manual

Conference System
DCN Next Generation
en Operation Manual

Table of contents
1Safety 8
1.1 Important Safeguards 8
1.2 DCN-WLIION Battery Pack 8
1.3 Disclaimers 8
1.4 Statements for FCC & Industry Canada 8
2About this manual 10
2.1 Function 10
2.2 Digital version 10
2.3 Alerts and notice signs 10
2.4 Electro-static discharges 11
2.5 Conversion tables 12
3System Overview 13
3.1 DCN-CCU2 and DCN-CCUB2 Central Control Units 14
3.1.1 Audio I/O routing 16
3.2 LBB4402/00 Audio Expander 22
3.3 PRS-4DEX4 Digital Audio Expander 23
3.4 LBB4404/00 Cobranet Interface 24
3.5 DCN-WAP Wireless Access Point 25
3.6 DCN-CON Concentus Units 26
3.7 DCN-DIS and DCN-WD Discussion Units 30
3.8 DCN-WLIION Battery Pack 34
3.9 DCN-WCH05 Battery Charger 35
3.10 DCN-WPS Power Supply Adapter 35
3.11 DCN-MICL, DCN-MICS Pluggable Microphones 36
3.12 DCN-ICHS Intercom Handset 38
3.13 DCN-FPT Flush Positioning Tool 39
3.14 DCN-DDI Dual Delegate Interface 39
3.15 DCN-FMIC Microphone Connection Panel 40
3.16 DCN-FMICB Microphone Control Panel 41
3.17 DCN-FPRIOB Priority Panel 41
3.18 DCN-FLSP Loudspeaker Panel 42
3.19 DCN-FV(CRD) Voting Panel 43
3.20 DCN-FCS Channel Selector 44
3.21 DCN-FVU Voting Unit 46
3.22 DCN-FCOUP Couple 48
3.23 DCN-FEC End Caps 48
3.24 DCN-TTH Tabletop Housing 49
3.25 DCN-FBP panels 49
3.26 DCN-IDESK Interpreter Desks 50
3.27 DCN-EPS Extension Power Supply 53
3.28 LBB4114/00 Trunk Splitter 54
3.29 LBB4115/00 Tap-off unit 55
3.30 LBB4116 Extension Cables 55
3.31 LBB4117/00 Cable Locking Clamps 56
3.32 LBB4118/00 Cable Termination Plug 56
3.33 PRS-NSP Network Splitter 57
3.34 PRS-FINNA Fiber Interface 58
Conference System Table of Contents | en 3
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

3.35 LBB4416 Optical Network Cables 59
3.36 LBB4418/00 Cable-connector Tool Kit 61
3.37 LBB4419/00 Cable Couplers 62
3.38 DCN-DDB Data Distribution Board 62
3.39 DCN-IDENC ID-card Encoder 63
3.40 DCN-IDCRD ID-cards 63
4Planning 64
4.1 DCN design 64
4.1.1 Calculation tool 64
4.1.2 Concepts 64
4.1.3 Limits 64
4.1.4 Control capacity 66
4.1.5 Power capacity 67
4.1.6 Maximum power consumption 69
4.1.7 Examples 71
4.1.8 Interpretation devices 75
4.2 Optical network design 77
4.2.1 Calculation tool 77
4.2.2 Limits 77
4.2.3 Control capacity 78
4.2.4 Power capacity 78
4.2.5 Cabling 80
4.2.6 Optical fiber length 80
4.2.7 Cable couplers 81
4.2.8 Bending Network Cable 81
4.2.9 Example layouts 83
4.3 Wireless network design 86
4.3.1 Limits 86
4.3.2 Frequency band 86
4.4 Wireless language distribution 88
4.5 CobraNet 88
4.6 User set-up 89
4.6.1 Public areas 89
4.6.2 Speaking distance 89
4.6.3 Interpreter booths 89
4.7 Device set-up 90
4.7.1 General 90
4.7.2 Cables 90
4.7.3 Temperature 90
4.7.4 Ventilation 90
4.7.5 Acoustic feedback 90
5Installation 91
5.1 19 inch units 91
5.2 DCN-WAP Wireless Access Point 92
5.3 DCN-CON Concentus Units 95
5.4 DCN-DIS and DCN-WD Discussion units 96
5.5 DCN-WCH05 Battery Charger 101
5.6 DCN-Flush mounted products 103
5.7 DCN-IDESK Interpreter Desks 108
4en | Table of Contents Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

5.8 DCN-EPS Extension Power Supply 109
5.9 LBB4114/00 Trunk Splitter 110
5.10 LBB4115/00 Tap-off unit 110
5.11 PRS-NSP Network Splitter 111
5.12 PRS-FINNA Fiber Interface 111
6Connection 112
6.1 19 inch Units 112
6.2 DCN-CCU2 and DCN-CCUB2 Central Control Units 113
6.3 LBB4402/00 Audio Expander 117
6.4 PRS-4DEX4 Digital Audio Expander 120
6.5 LBB4404/00 Cobranet Interface 122
6.6 DCN-WAP Wireless Access Point 123
6.7 DCN Concentus Units 124
6.8 DCN-DIS Discussion Unit (wired) 128
6.9 DCN-WD Discussion Units (wireless) 129
6.10 DCN-WCH05 Battery Charger 131
6.11 DCN-MICL, DCN-MICS Pluggable Microphones 132
6.12 DCN-DDI Dual Delegate Interface 133
6.13 DCN-FMIC Microphone Connection Panel 135
6.14 DCN-FMICB Microphone Control Panel 135
6.15 DCN-FPRIOB Priority Panel 135
6.16 DCN-FLSP Loudspeaker Panel 135
6.17 DCN-FV(CRD) Voting Panel 135
6.18 DCN-FCS Channel Selector 138
6.19 DCN-FVU Voting Unit 141
6.20 DCN-IDESK Interpreter Desks 141
6.21 DCN-EPS Extension Power Supply 144
6.22 LBB4114/00 Trunk Splitter 146
6.23 LBB4115/00 Tap-off unit 146
6.24 PRS-NSP Network Splitter 146
6.25 PRS-FINNA Fiber Interface 149
6.26 DCN-DDB Data Distribution Board 151
6.27 Custom made Optical Network Cables 160
6.28 Custom made DCN cables 176
7Configuration 177
7.1 System Configuration 177
7.1.1 Downloading 177
7.1.2 Initialization 178
7.2 19 inch units 179
7.3 DCN-CCU2 and DCN-CCUB2 Central Control Units 183
7.4 LBB4402/00 Audio Expander 191
7.5 PRS-4DEX4 Digital Audio Expander 194
7.6 LBB4404/00 Cobranet Interface 196
7.7 CobraNet Discovery 199
7.8 CobraNet Configuration 201
7.9 DCN-WAP Wireless Access Point 205
7.10 DCN-CON Concentus Units 207
7.11 DCN-DIS and DCN-WD discussion units 208
7.12 DCN-DDI Dual Delegate Interface 213
Conference System Table of Contents | en 5
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

7.13 DCN-FMIC Microphone Connection Panel 218
7.14 DCN-FCS Channel Selector 219
7.15 DCN-IDESK Interpreter Desks 221
7.16 DCN-EPS Extension Power Supply 226
7.17 PRS-NSP Network Splitter 227
7.18 DCN-DDB Data Distribution Board 228
8Operation 230
8.1 System operation DCN-Wireless 230
8.1.1 Start the system 230
8.1.2 Stop the system 231
8.2 DCN-CCU2 and DCN-CCUB2 Central Control Units 231
8.3 LBB4402/00 Audio Expander 237
8.4 PRS-4DEX4 Digital Audio Expander 239
8.5 LBB4404/00 Cobranet Interface 241
8.6 DCN-WAP Wireless Access Point 244
8.7 DCN-CON Concentus Units 245
8.8 DCN-DIS and DCN-WD Discussion Units 246
8.9 DCN-WLIION Battery Pack 247
8.10 DCN-WCH05 Battery Charger 248
8.11 DCN-MICL, DCN-MICS Pluggable Microphones 248
8.12 DCN-FMICB Microphone Control Panel 249
8.13 DCN-FPRIOB Priority Panel 249
8.14 DCN-FV(CRD) Voting Panel 250
8.15 DCN-FVU Voting Unit 251
8.16 DCN-IDESK Interpreter Desks 252
8.17 PRS-NSP Network Splitter 255
8.18 PRS-FINNA Fiber Interface 255
8.19 DCN-DDB Data Distribution Board 255
9Troubleshooting 259
9.1 System 259
9.2 DCN-CCU2 and DCN-CCUB2 Central Control Unit 261
9.3 DCN-CON Concentus Unit 263
9.4 DCN-DIS Discussion Unit 264
9.5 DCN-WD Wireless Discussion Unit 265
9.6 LBB4114/00 or LBB4115/00 Trunk Splitter 266
9.7 PC control software 266
9.8 LBB 4402/00 Audio Expander 266
9.9 DCN-WAP Wireless Access Point 267
9.10 DCN-MIC Microphones 267
9.11 DCN-F Flush Mounted units 267
9.12 DCN-DDB Data Distribution Board 267
10 Maintenance 268
10.1 Cleaning 268
10.2 Storage 268
10.3 DCN-WLIION Battery Pack 268
11 Technical Data 269
11.1 System Technical Data 269
11.1.1 Transmission links 269
11.1.2 Combined devices from input to output 269
6en | Table of Contents Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

11.1.3 Safety 270
11.1.4 Electro-magnetic compatibility 270
11.1.5 Wireless devices 270
11.1.6 Miscellaneous 271
11.1.7 Language list 271
11.2 Product Technical Data 276
11.2.1 DCN-CCU2 and DCN-CCUB2 Central Control Units 276
11.2.2 LBB4402/00 Audio Expander 277
11.2.3 PRS-4DEX4 Digital Audio Expander 278
11.2.4 LBB4404/00 Cobranet Interface 278
11.2.5 DCN-WAP Wireless Access Point 279
11.2.6 DCN-CON Concentus Units 279
11.2.7 DCN-DIS and DCN-WD Discussion Units 280
11.2.8 DCN-WLIION Battery Pack 280
11.2.9 DCN-WCH05 Battery Charger 280
11.2.10 DCN-WPS Power Supply Adapter 281
11.2.11 DCN-MICL, DCN-MICS Pluggable Microphones 281
11.2.12 DCN-ICHS Intercom Handset 282
11.2.13 DCN-FPT Flush Positioning Tool 282
11.2.14 DCN-DDI Dual Delegate Interface 282
11.2.15 DCN-FMIC Microphone Connection Panel 283
11.2.16 DCN-FMICB Microphone Control Panel 283
11.2.17 DCN-FPRIOB Priority Panel 283
11.2.18 DCN-FLSP Loudspeaker Panel 283
11.2.19 DCN-FV(CRD) Voting Panel 284
11.2.20 DCN-FCS Channel Selector 284
11.2.21 DCN-FVU Voting Unit 284
11.2.22 DCN-FCOUP Couple 284
11.2.23 DCN-FEC End Caps 284
11.2.24 DCN-TTH Tabletop Housing 285
11.2.25 DCN-FBP panels 285
11.2.26 DCN-IDESK Interpreter Desks 285
11.2.27 DCN-EPS Extension Power Supply 286
11.2.28 LBB4114/00 Trunk Splitter 286
11.2.29 LBB4115/00 Tap-off unit 286
11.2.30 LBB4116 Extension Cables 286
11.2.31 LBB4416 Optical Network Cables 287
11.2.32 DCN-DDB Data Distribution Board 287
11.2.33 DCN-IDENC Chip Card Encoder 287
Conference System Table of Contents | en 7
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

Safety
Important Safeguards
Please read the Important Safety Instructions before you install or operate the DCN System.
The Important Safety Instructions are supplied together with the central control unit.
DCN-WLIION Battery Pack
CAUTION Important Safety Instructions for Li-ion batteries.
Do not short-circuit the battery.
Do not pierce or crush the battery.
Do not disassemble or modify the battery.
Do not heat, incinerate or expose the battery to direct continuous sunshine.
Do not immerse the battery in any liquid it may be vent or rupture.
Respect charging, discharging, transport and storage instructions.
Charge the battery between 0 ºC and 45 ºC (32ºF and 113ºF).
Discharge the battery between -20 ºC and 60 ºC (-4ºF and 140ºF).
Rated : 7.2V 4800 mAh
Charging Current : 12V/2.5A
DCN-WLIION-D Rechargeable Lithium-ion Battery Pack
NL-4827HG-10
S/N: SMYYWW9999
Li-ion US ITE ACCESORYC
LISTED 19JW
M
04
Figure 1.1: Safety instructions
When wireless discussion units with DCN-WLIION battery packs are used, read safety
instructions as printed on the label of the battery pack.
Disclaimers
CobraNet is a trademark of Peak Audio — a division of Cirrus Logic, Inc. — in the United States
and/or other countries.
Statements for FCC & Industry Canada
This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la
classe B est conforme à la norme NMB‑003 du Canada.
The DCN wireless equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.
The Wireless Discussion Units and the Wireless Access Point comply with Part 15 of the FCC
Rules and with RSS‑210 of Industry Canada. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause
undesired operation.
1
1.1
1.2
1.3
1.4
8en | Safety Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

Notice!
Changes or modifications made to this equipment, not expressly approved by Bosch Security
Systems B.V. may void the FCC authorization to operate this equipment.
Notice!
The Wireless Discussion Units and the Wireless Access Point comply with FCC radiation
exposure limits set forth for an uncontrolled environment. The Wireless Discussion Units and
the Wireless Access Point should be installed and operated with minimum distance of 20 cm
to your body. The RF-parts of the Wireless Discussion Units and the Wireless Access Point
must not be co-located or operating in conjunction with any other antenna or transmitter.
Conference System Safety | en 9
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

About this manual
Function
The Installation and Operation manual gives the installers and the operators the necessary
data to install, configure and operate the DCN System.
Digital version
The Installation and Operation manual is available as a digital file (Portable Document Format,
PDF). When the PDF refers to a location that contains more data, click the text. The text
contains hyperlinks.
Alerts and notice signs
Four types of signs can be used in this manual. The type is closely related to the effect that
may be caused if it is not observed. These signs - from least severe effect to most severe
effect - are:
Notice!
Containing additional information. Usually, not observing a ‘notice’ does not result in damage
to the equipment or personal injuries.
!
Caution!
The equipment or the property can be damaged, or persons can be lightly injured if the alert
is not observed.
!
Warning!
The equipment or the property can be seriously damaged, or persons can be severely injured
if the alert is not observed.
Danger!
Not observing the alert can lead to severe injuries or death.
!
Warning!
Risk of electro-static discharges (refer to Electro-static discharges, page 11).
2
2.1
2.2
2.3
10 en | About this manual Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

Electro-static discharges
Electro-Static Discharges (ESD) can damage electric components. Take precautions to prevent
electro-static discharges when touch PCBs.
31 2
12 11 10 9 8 7 6
4 5
Figure 2.1: ESD prevention
No. Description
1 Safety isolating transformer
2 Distribution supply box
3 Conductive compartment trays
4 Electro-static voltage sensor
5 Cotton overall
6 Conductive floor mat
7 Conductive boots/heel grounding protectors
8 Conductive stool
9 Strap (resistance 0.5 to 1.0 MΩ)
10 Common reference point
11 Conductive bench top
12 Supply ground
Table 2.1: ESD prevention
2.4
Conference System About this manual | en 11
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

Conversion tables
In this manual, SI units are used to express lengths, masses, temperatures etc. These can be
converted to non-metric units using the information provided below.
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 2.2: Conversion of units of length
1 lb = 0.4536 kg 1 kg = 2.2046 lb
Table 2.3: Conversion of units of mass
1 psi = 68.95 hPa 1 hPa = 0.0145 psi
Table 2.4: Conversion of units of pressure
Notice!
1 hPa = 1 mbar
°F = _. °C + 32
9
5
°C = _. (°F - 32)
5
9
2.5
12 en | About this manual Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

System Overview
The DCN System is a system for wired and wireless distribution and processing of audio
signals. The system can also be used for voting and simultaneous interpretation.
The DCN System is composed of three parts: the DCN network, the wireless network and the
optical network.
Figure 3.1: DCN System system overview
The DCN System comprises:
– Central control units, audio expanders, Integrus transmitter and/or wireless access point.
– Wireless discussion units, wired discussion units, Consentus units, flush mounted units
and/or interpreter desks.
– Installation devices, such as Dual Delegate Interfaces (DDI) and extension power supply
units, trunk splitters.
Notice!
Refer to the Integrus manual for all related information.
3
Conference System System Overview | en 13
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

DCN-CCU2 and DCN-CCUB2 Central Control Units
The Central Control Unit controls the system. The Central Control Unit can operate with or
without a control PC.
1 2 3
1
15 14 12 10 9
11
5
2 3 4
13
6 65 7 8
Figure 3.2: Front and rear view of CCU2
1. On/off switch - Power on or off the central control unit.
2. Display - Shows the configuration menu.
3. Knob - Operates the configuration menu and the volume level of the system.
4. Headphones socket - Headphone connection.
5. Audio inputs - Connect the central control unit to external analog audio sources. The
functions of the audio inputs are:
Audio input 1: Floor
Audio input 2: Selectable recorder/delegate loudspeaker/ mix-minus/insertion.
Interpreter floor insertion/local floor.
6. Audio outputs - Connect the central control unit to external analog audio devices. The
functions of the audio outputs are:
Audio output 1: PA
Audio output 2: Selectable recorder/delegate loudspeaker/ mix-minus/insertion.
Interpreter floor insertion/local floor.
7. Power inlet - Connects the central control unit to the mains power supply with a power
cable.
8. Ground screw - Connects the central control unit to ground.
9. Fuse holder - Prevents damage to the internal power supply unit of the central control
unit.
10. Ethernet socket - Connects the central control unit (DCN-CCU2) to the PC, remote
controller or in a multi CCU system to the master central control unit.
11. RS232 - Connects video cameras to the central control unit.
12. Fault contact - Connects the central control unit to devices to sense the condition of the
central control unit.
13. DCN sockets with cable locking facility - Connects the central control unit to the DCN.
14. Ground lift - Default: grounded. Do not ground more than one mains powered device to
prevent humming sound caused by ground loops.
3.1
14 en | System Overview Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

15. Optical network sockets - Connects the central control unit to the optical network.
The DCN-CCUB2 Basic Central Control Unit controls the system. The basic central control unit
is a simplified version of the DCN-CCU2 Central Control Unit. The DCN-CCUB2 Basic Central
Control Unit:
– Has one XLR output.
– Does not have any XLR inputs.
– Does not have a fault contact.
– Cannot be connected to the optical network Controls, connectors and indicators.
The following sections give more information about the mentioned subject:
– Planning: Planning, page 64.
– Installation: 19 inch units, page 91.
– Connection: 19 inch Units, page 112 and DCN-CCU2 and DCN-CCUB2 Central Control
Units, page 113.
– Configuration: 19 inch units, page 179 and DCN-CCU2 and DCN-CCUB2 Central Control
Units, page 183.
– Operation: DCN-CCU2 and DCN-CCUB2 Central Control Units, page 231.
– Troubleshooting: DCN-CCU2 and DCN-CCUB2 Central Control Unit, page 261.
– Technical Data: DCN-CCU2 and DCN-CCUB2 Central Control Units, page 276.
Conference System System Overview | en 15
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

Audio I/O routing
Recorder
The Recorder mode is the default audio I/O routing mode. In the Recorder mode, audio output
2 of the central control unit transmits a signal that can be connected to an external audio
recorder. The central control unit has no effect on the volume level of the signal.
In the Recorder mode, the audio input 2 signal of the central control unit is added to the floor
signal.
Ɖ
O
DC
DC
Ɖ
O
¯
¯
O
I
D
I
1
2
2
1
PC
PC
CCU
Figure 3.3: Audio processing scheme DCN-CCU2 or DCN-CCUB2
Contribution device(s) Wireless discussion units, wired discussion units,
Consentus units and/or flush mounted units.
DDD
Delegate Discussion unit microphones and loudspeakers.
Optical device(s) Central control units, audio expanders, Integrus
transmitter and/or wireless access point.
Interpretation device(s) Interpreter desk
Microphone --
Headphones --
Loudspeaker --
Summation Summation of the signal
Switch --
3.1.1
16 en | System Overview Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

Limiter --
Treble control --
Bass control --
Chime --
Level adjuster --
Audio input 1 Floor audio input
Audio output 1 Public Address audio output
Audio input 2 Selectable audio input
Audio output 2 Selectable audio output
Delegate loudspeaker
In the Delegate loudspeaker mode, audio output 2 of the central control unit transmits a signal
that can be connected to an external public address system.
The central control unit sets:
– The volume signal level.
– The bass signal level.
– The treble signal level.
In the Delegate loudspeaker mode, the audio input 2 signal of the central control unit is added
to the floor signal.
Ɖ
O
DC
DC
Ɖ
O
¯
¯
O
I
D
I
1
2
2
1
PC
PC
CCU
Figure 3.4: Delegate loudspeaker
Conference System System Overview | en 17
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

Insertion
In the Insertion mode, audio output 2 and audio input 2 of the central control unit are both
used to add signals from external audio devices. For example, connection of an external audio
mixer between audio output 2 and audio input 2 of the central control unit.
Ɖ
O
DC
DC
Ɖ
O
O
I
D
I
1
2
2
1
PC
PC
CCU
Figure 3.5: Insertion
Notice!
In the Insertion mode, a device between audio output 2 and audio input 2 of the central
control unit could be connected. When no device is connected, the audio signals from
contribution devices (floor) leave the system, but do not enter the system again.
18 en | System Overview Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.

Mix-minus
Use the Mix-minus mode to connect via audio input and audio output 2:
– A telephone coupler.
– Two systems.
Notice!
The Mix-minus connection prevents acoustic feedback.
Ɖ
O
DC
DC
Ɖ
O
O
I
D
I
1
2
2
1
PC
PC
CCU
Figure 3.6: Mix-minus
Notice!
Use a telephone coupler, in case of long distances between the two systems
Conference System System Overview | en 19
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x

Interpreter floor insertion
Interpreter Floor Insertion is used in applications where interpreters have video screens to
view the conference room. In case the video signal has latency, the floor audio for the
interpreters, can be delayed with an external device to lip-sync it with the video plus improve
S/N ratio for systems with external floor and DCN interpretation Integrus. The external device
should be connected to output 2 and input 2.
Ɖ
O
DC
DC
Ɖ
O
O
I
D
I
1
2
2
1
PC
PC
CCU
Figure 3.7: Interpreter floor insertion
20 en | System Overview Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x Operation Manual Bosch Security Systems B.V.