Technical Data; System Electrical And Electro-Acoustic Characteristics - Bosch DCN Next Generation Installation & User's Instructions

DCN Next Generation | Installation and User Instructions | System Design and Planning
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Technical data

table 7. 1 : Electro-acoustic characteristics
Nominal input level:
85 dB SPL
Overload input level:
110 dB SPL
Automatic gain reduction (not for PA-floor output):
• 24 dB (interpretation channels)
• 12 dB (delegate loudspeaker channel)
Automatic gain reduction with:
• 3 dB (2 microphones on
• 5 dB (3 microphones on)
• 6 dB (4 or more microphones on)
Loudspeaker gain control:
24 x 1 dB and off (mute)
7.1.2 Transmission links
• From delegate microphone to interpreter
headphones
• From delegate microphone to delegate headphones
• From interpreter microphone to delegate
headphones
table 7.2: Transmission links
Frequency response:
• 125 Hz to 20 kHz (General)
• 125 Hz to 3.5 kHz (Intercom links)
Harmonic distortion:
< 0.5%
Harmonic distortion @ overload:
< 1%
Crosstalk attenuation @ 4 kHz:
> 80 dB
Dynamic range:
> 90 dB
Bosch Security Systems | 2007-02 | 9922 141 70525
7. 1 System electrical and
electro-acoustic
characteristics
7.1.1 General
• From interpreter microphone to interpreter
headphones
• From auxiliary input to delegate headphones
• From auxiliary input to interpreter headphones
• From delegate microphone to auxiliary output
• From interpreter microphone to auxiliary output
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