Bosch DCN Next Generation Installation And User Instructions Manual page 94
Digital congress network
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- Installation and operation manual (286 pages) ,
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DCN NG | Installation and User Instructions | Section 3 | Central Control Equipment
10.7.6 Analogue microphone inputs
(only input 1 and input 2)
Number of connections:
1x female XLR for each audio input
2x cinch for each audio input
Position:
Rear side
Cable:
Shielded cable
Nominal input level:
-57 dBV based on 91 dBSPL for a microphone with
sensitivity of 2 mV/Pa, a male voice with normal
loudness and a speaker to microphone distance of
0.15 m.
Input range:
15 dB
Input sensitivity setting:
Software
Frequency response:
-3 dB at 300 Hz and 20 kHz (tolerance ± 1 dB)
First order, high-pass speech filter at 300 Hz
Input impedance:
1360 Ω
Signal-to-noise ratio:
> 62 dBA
CMRR:
> 55 dB at 100 Hz
> 65 dB at 1 kHz and 10 kHz
Phantom supply:
12 ± 1 V (max. 15 mA)
Limiter:
Analogue limiter, level -8 dB with respect to maximum.
• attack time: 1 ms
• decay time: 300 ms
• threshold at nominal input level
Bosch Security Systems | 2004-03 | 9922 141 70521en
10.7.7 Audio outputs
Number of connections:
1x male XLR for each audio output
2x cinch for each audio output
Position:
Rear side
Cable:
Shielded cable
Maximum output level:
18 dBV (XLR), 6 dBV (cinch)
Nominal output level (interpreter channels):
-9 dBV (XLR), -3 dBV (cinch)
Output range:
30 dB
Output level setting:
Software
Frequency response:
-3 dB at 20 Hz and 20 kHz (tolerance ± 1 dB)
Output impedance:
< 100 Ω
Signal-to-noise ratio:
> 89 dBA at maximum level
Output crosstalk:
< -85 dB
Distortion:
< 0.05% at 1 kHz at -3 dB of the maximum input level
10.7.8 Control inputs
Number of connections:
1x male 16 pole
Position:
Rear side
Cable:
Limited by usage
Signaling:
Potential-free, change-over relay
Signal voltage:
Max. 24 V(DC), 15 V(AC)
Signal current:
Max. 500 mA
en | 94
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