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Bosch Security Systems | 2006-06 | 9922 141 10377 en
Plena Voice Alarm System | Installation and User Instructions | Equipment en | 36
5.3.9 Mic/line input with VOX
functionality
The voice alarm controller has 1 mic/line input with
voice-activated (VOX) functionality (see figure 5.14).
This input has 2 sockets; a balanced XLR socket and a
balanced 6.3 mm jack socket. The signals from both
sockets are mixed to form a single input signal.
The input automatically starts a business or emergency
call if the input is higher than -20 dB (100 mV for line
and 100 µV for microphone inputs) or if the VOX
switch is closed (see figure 5.15). The input must be
configured with the configuration software.
For example, the mic/line input with VOX functionality
can be used to create a supervised link to another
emergency sound system (e.g. a Praesideo system).
figure 5.14: Mic/line input with VOX functionality
L
R
PC
p
Calibration
Mic/Lin
GND
Note
See the Configuration Software Manual
(9922 141 1038x) for more information about
the configuration software.
figure 5.15: Connecting a VOX switch
123456
VOX Switch
123456
24V
DC out