Bosch DCN Next Generation Installation And Operation Manual page 114

114 en | Connection
Audio inputs
You can connect an external analog audio source to the audio inputs of the central control
unit. The DCN-CCU2 has two audio inputs.
Each audio input has:
–
–
The DCN-CCUB2 has two audio inputs. Each audio input has:
–
NOTICE!
The audio inputs change stereo signals in mono signals.
Figure 6.5 Audio input, connection
Pin
1
2
3
4
5
Table 6.2 Audio input, connection
You can select the procedure that is used to send audio signals through the central control
unit with the audio routing modes (refer to Section 7.3 DCN-CCU2 and DCN-CCUB2 Central
Control Units).
NOTICE!
You can only connect line level sources to the audio inputs of the central control unit. It is not
possible to connect microphone sources.
DCN-NG_IOM_V4.1 | V1.3 | 2012.07
1 XLR socket for balanced signals. The electric circuits behind the XLR sockets contain
transformers for galvanic separation.
1 double cinch socket for unbalanced signals.
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
Conference System
Bosch Security Systems B.V.