Bosch DCN Next Generation Operation Manual page 119

Conference System
Control input
1
2
3
4
5
6
7
8
Table 6.7: Control inputs, connection
When the circuit that is connected to a control input of an audio input or audio output is open,
the audio input or audio output is enabled. Close the control input to disable the audio input
or audio output.
When an control input is disabled, an X character replaces the VU meter of the corresponding
audio input or audio output on the display.
Control outputs
The audio expander has five control outputs.
Control Out
Figure 6.12: Control outputs, connection
With the control outputs, you can:
–
–
–
Control output
1
2
3
Bosch Security Systems B.V.
C NC NO C NC NO C NC NO C NC NO C NC NO
1 2 3
Send the condition of the audio outputs to external devices (control output 1,2,3 and 4).
Send the condition of the connection of the optical network to external devices (control
output 5).
When an audio output is assigned to an individual microphone channel, a corresponding
contact can be switched when the level is above threshold. Refer to LBB4402/00 Audio
Expander, page 191 > Table.
Condition of
Channel attached to
audio input 1
Channel attached to
audio input 2
Channel attached to
audio input 3
Connection
Audio input 1
Audio input 2
Audio input 3
Audio input 4
Audio output 1
Audio output 2
Audio output 3
Audio output 4
4 5
C-NO contact
(Normally Open)
Engaged (contact
closed)
Engaged (contact
closed)
Engaged (contact
closed)
Operation Manual
Connection | en 119
C-NC contact
(Normally Closed)
Not engaged (contact
open)
Not engaged (contact
open)
Not engaged (contact
open)
2013.11 | V2.0 | DCN-NG_OM_V4.x