Bosch DCN Next Generation Installation And User Instructions Manual page 84

DCN NG | Installation and User Instructions | Section 3 | Central Control Equipment
10.3.5 Connecting the control inputs
The analogue audio expander has 8 control inputs to
enable and disable the audio inputs and the audio
outputs of the audio expander analogue. By default, all
audio inputs and audio outputs are enabled. An audio
input or output can be disabled by closing its control
input (see table 10.4, table 10.5 and figure 10.5).
table 10.4: Audio inputs and control inputs
Audio input
1
2
3
4
table 10.5: Audio outputs and control inputs
Audio output
1
2
3
4
Control In
1 2 3
figure 10.5: Control input connector
Bosch Security Systems | 2004-03 | 9922 141 70521en
Control input
1
2
3
4
Control input
5
6
7
8
4 5 6 7 8
10.3.6 Connecting the control outputs
The analogue audio expander has 5 control outputs.
Four control outputs are used to indicate if the channels
that are available on the audio inputs are already in use
by another unit (i.e. channel engaged). When the
channel available on an audio input is engaged, the
control output belonging to the audio input is closed
(see table 10.6, table 10.7 and figure 10.6).
table 10.6: Audio inputs and control outputs
Audio input
1
2
3
4
table 10.7: Control output states
State
NO-C connected
NC-C connected
Control Out
C NC NO C NC NO C NC NO C NC NO C NC NO
1 2
figure 10.6: Control output connector
The fifth control output is used to indicate if the optical
network is available (NO-C connected) or not
(NC-C connected).
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Control output
1
2
3
4
Description
Channel engaged
Channel not engaged
3 4 5