Lbb4402/00 Audio Expander - Bosch DCN Next Generation Installation And Operation Manual

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.
Figure 6.10 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 plugs 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
Section 7.4 LBB4402/00 Audio Expander).
NOTICE!
When the interlock mode is None (refer to Section 7.15 DCN-IDESK Interpreter Desks), the
audio inputs of the digital audio expander are disabled for translation channels only. Audio
input channels can route to floor channels.
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
Audio In
5
3 4
Type
XLR
Cinch
Installation and Operation manual
Signal Description
Xternal Shield/ground
Live Positive
Return Negative
Live Signal in
Return Shield/ground
DCN-NG_IOM_V4.1 | V1.3 | 2012.07
Connection | en 117