Bosch Security Systems | 2007-11 | 9922 141 70691 en
DCN Wireless
| Installation and User Instructions | System Design and Planning
en
| 26
9
Technical data
9.1
System electrical and
electro-acoustic
characteristics
9.1.1
General
9.1.2
Routing links
•
From delegate microphone to interpreter
headphones
•
From delegate microphone to delegate headphones
•
From interpreter microphone to delegate
headphones
•
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
table 9.1: Electro-acoustic characteristics
Nominal input level:
85 dB SPL
Maximum 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)
•
6 dB (4 or more microphones on)
Loudspeaker volume control:
24 steps of 1 dB and off (mute)
table 9.2: 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
