Bosch DCN Next Generation Installation And User Instructions Manual page 66

DCN NG | Installation and User Instructions | Section 3 | Central Control Equipment
8.3.5 Connecting audio inputs
The CCU has 2 audio inputs to interface with external
analogue audio sources. Each audio source has two
types of sockets on the rear of the CCU; one XLR
socket (for balanced signals) and one double cinch
socket (for unbalanced signals). Stereo signals connected
to the same audio input are mixed into one single mono
signal.
2
Audio In
3
figure 8.6: Audio input sockets
table 8.2: Audio input socket details
Pin Socket
1 XLR
2 XLR
3 XLR
4 Cinch
5 Cinch
By default, the signals connected to audio inputs 1 and 2
are added to the floor channel (channel 0, see
figure 8.7).
1
2
figure 8.7: Normal audio routing mode
Bosch Security Systems | 2004-03 | 9922 141 70521en
1
5
4
Signal Description
Xternal Shield/ground
Live Positive
Return Negative
Live Signal in
Return Shield/Ground
+21 dB Limiter
8.3.6 Connecting audio outputs
The CCU has 2 audio outputs to route analogue audio
signals to external equipment (e.g. a tape deck in order
to record the audio). Each audio output has two sockets
on the rear of the CCU; one XLR socket (for balanced
signals) and one double cinch socket (for unbalanced
signals).
Note
Both cinch sockets contain the same channel.
figure 8.8: Audio output sockets
table 8.3: Audio output socket details
Pin Type
1 XLR
2 XLR
3 XLR
4 Cinch
5 Cinch
By default, audio output 1 is intended for delivering the
Ch 0
floor channel to a public address installation, whereas
audio output 2 is intended for delivering the floor signal
to an audio recorder (see figure 8.7).
2
1
1 2
Audio Out
5
3 4
Signal Description
Xternal Shield/ground
Live Positive
Return Negative
Live Signal out
Return Shield/Ground
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