Bosch DCN Next Generation Installation & User's Instructions page 101

DCN Next Generation | Installation and User Instructions | Central Devices
Use the configuration menu to configure the audio
outputs of the audio expander (refer to section 11.5.8).
table 11.8: Audio outputs
Number of connections:
• 1x XLR socket for each audio output
• 1x double cinch socket for each audio output
Location:
Rear side
Cable:
Shielded cable
Maximum output level:
Refer to appendix A
Nominal output level (floor):
Refer to appendix A
Nominal output level (interpreter channels):
Refer to appendix A
Frequency response:
-3 dB @ 30 Hz and 20 kHz
Output impedance:
< 100 Ω
Signal-to-noise ratio:
> 89 dBA @ max. output level
Crosstalk attenuation:
> 85 dB
Distortion:
< 0.05% @ 1 KHz @ -3 dB of max. input level
11.4.5 Control inputs
The audio expander has eight control inputs. With the
control inputs, remote interpretation systems can
control the audio inputs and the audio outputs of the
audio expander. Each audio input and audio output has
a control input (refer to figure 11.7 and table 11.9).
Control In
1 2 3
figure 11.7: Control inputs, connection
Bosch Security Systems | 2007-02 | 9922 141 70525
4 5 6 7 8
table 11.9: Control inputs, connection
Control input
1
2
3
4
5
6
7
8
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.
table 11. 1 0: Control inputs
Number of connections:
8x control inputs on 16-pole plug
Location:
Rear side
Signaling:
Potential-free change-over relay
Signal voltage:
Max. 24 V(DC), 15 V(AC)
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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