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Bosch Appliances Webcam 3922 988 43318 User Manual

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Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation  and Operating Manual | Chapter 4 - Central Control Equipment
en | 4-13
CCU Audio Routing Modes
4.9.1  Audio Routing INSERTION mode (
)  
In the ‘INSERTION’ mode, the normal audio routing path in the CCU from added microphone signals 
to the loudspeakers of the delegate and chairman units is interrupted to allow connection of an 
external device for example - an audio mixer.  The external audio device is connected between the 
‘Line-Output’ and ‘Line-Input’ of the CCU.
shows the audio routing in the CCU and external device.
In the ‘INSERTION’ mode, a permanent audio channel is used for the ‘Line-Input’. Therefore the 
number of available interpretation channels is one channel less than in the standard mode i.e. 10 
channels instead of 11 channels in ‘Stand-alone’ and ‘Multi-CCU’ systems.
NOTES: 
                                                                                                                              
1.
In INSERTION mode, recording of the ‘Line-Input’ signal via the recorder output of 
the CCU is no longer available.
2.   
For recording the total audio signal (i.e. Floor + Line-Input) use an Audio Media 
Interface unit LBB 3508/00 on channel 0 (see
).
Installation
: 
To set the CCU for the ‘INSERTION’ mode DIP-switch ‘S9’ on the Trunk Communication 
Board (TCB 4) must be set as follows:
 
FIG 4-9  ‘INSERTION’ mode
DIP-switch S9
Switch-2
Switch-3
Mode
Off
Off
Standard
Off
On
Insertion
DCN System 
∑
∑
Line-OUT
Line-IN
CH.13
CH.0
CH.12
CH.13
REC. UIT
REC. IN
Volume CCU
Master volume
PC control
e.g. AUDIO
MIXER
Delegate/Chairman
microphones
Interpreter Headphone
Unit loudspeaker
Delegate Headphone
Equalizer PA
Local PA (MCCU)
Delegate unit
loudspeaker
(See
and