Bosch DCN Next Generation Operation Manual page 117

Conference System
6.3 LBB4402/00 Audio Expander
Audio inputs
You can connect external analog audio sources to the audio inputs of the audio expander. The
audio expander has four audio inputs.
Each audio input has:
–
–
Notice!
The audio inputs change stereo signals in mono signals.
Audio In
Figure 6.9: Audio input, connection
Pin
1
2
3
4
5
Table 6.5: Audio input, connection
You can connect line level sources to all audio inputs of the audio expander.
You can connect microphone sources only to the XLR socket of audio input 1 and audio input
2 of the audio expander.
Use the configuration menu to configure the audio inputs of he audio expander (refer to
LBB4402/00 Audio Expander, page 191).
Notice!
When the interlock mode is None (refer to DCN-IDESK Interpreter Desks, page 221), the audio
inputs of the digital audio expander are disabled for translation channels only. Audio input
channels can route to floor channels.
Audio outputs
You can connect audio recording devices or public address systems to the audio outputs of
the audio expander. The audio expander has four audio outputs.
Each audio output has:
–
Bosch Security Systems B.V.
1 XLR socket for balanced signals. The electric circuits behind the XLR sockets contain
transformers.
1 double cinch socket for unbalanced signals.
2 1
5
3
4
Type
XLR
Cinch
1 XLR plug for balanced signals. The electric circuits behind the XLR plugs contain
transformers.
Signal
Xternal
Live
Return
Live
Return
Operation Manual
Connection | en 117
Description
Shield/ground
Positive
Negative
Signal in
Shield/ground
2013.11 | V2.0 | DCN-NG_OM_V4.x