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Video recorder control
The multiplexer is fitted with two control contacts for
each connected video recorder:
❚ ALARM OUT
for connection with the alarm input of the
video recorder
❚ SW CTRL IN
for connection with the control pulse output of the
video recorder
The purpose of the ALARM OUT function is to start the
video recorder automatically (after corresponding con-
figuration of the multiplexer). This output is activated via
the alarm inputs of the ALARM IN/OUT socket.
The purpose of the SW CTRL IN control pulse input is
to provide a connection to the corresponding video
recorder output socket (CLOCK OUT or CONTROL
OUT). This clock pulse connection is used for syn-
chronizing the video signal transfer function with the
recording status of the video recorder. This guarantees
– for example – that no images are lost if there is a
brief recording function start-up delay.
Note
Always use the control pulse input whenever
possible, as the video recorder timing signal
ensures the smooth synchronization of the
multiplexer and VCR. This avoids faults due
to incorrect programming.
The contacts are configured as non-threaded plug-in
connectors. The table shows the wiring layout of the
multiplexer connection (see illustration).
• Connect the GND (Grounding) wire to the corre-
sponding video recorder terminal.
• Strip about 10 mm of insulation from the end of
each connection wire.
• To release the terminal strip locking mechanism,
insert a small screwdriver as far as possible into the
slot beneath the corresponding terminal.
• Insert the bare end of the wire into the terminal and
withdraw the screwdriver.
• Carry out a final check for loose wires.
ZS-SX Series
Contact
Signal
1
Video recorder No. 1 alarm output
2
Grounding
3
Video recorder No. 1 clock pulse input
4
Video recorder No. 2 alarm output
5
Grounding
6
Video recorder No. 2 clock pulse input
7
Not used
8
Not used
9
Not used
10
Not used
11
Not used
12
Not used
Installation
25
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