Bosch DCN Next Generation Installation & User's Instructions page 48

DCN Next Generation | Installation and User Instructions | Central Devices
8.5.4 Headphones
You can connect headphones to the headphones socket
of the central control unit. The headphones must have a
3.5 mm plug (refer to figure 8.7).
figure 8.7: 3.5 mm headphones plug, connection
table 8. 1 2: 3.5 mm headphones plug, connection
Number
1
2
3
Note
You can also connect mono headphones to the
headphones socket.
You can select the signal that is available on the
headphones socket with the configuration menu (refer
to section 8.10.9).
Bosch Security Systems | 2007-02 | 9922 141 70525
2 3 1
Signal
Left
Common
Right
8.5.5 Audio inputs
You can connect an external analog audio source to the
audio inputs of the central control unit. The central
control unit has two audio inputs. Each audio input has
(refer to figure 8.8):
• 1 XLR socket for balanced signals. The electric
circuits behind the XLR sockets contain
transformers.
• 1 double cinch socket for unbalanced signals.
Note
The audio inputs change stereo signals in mono
signals.
2 1
Audio In
3
figure 8.8: Audio input, connection
table 8. 1 3: Audio input, connection
Pin Type Signal
1 XLR Xternal
2 Live
3 Return
4 Cinch Live
5 Return
en | 48
5
4
Description
Shield/ground
Positive
Negative
Signal in
Shield/ground