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19
Switching contacts
The switching contacts can be used for controlling
both the video recorder itself and a range of different
peripheral items.
The contacts are laid out as follows:
high: 4 ... 5 V, low: 0 ... 0.6 V.
The table shows the configuration of the terminal strip:
Installation
Contact
Description
Function
Signal direction
Switching duration
1
ALARM IN
Alarm for starting recording
IN
min. 250 ms
2
ALARM OUT
Alarm signal (e.g. horn)
OUT
duration of alarm
3
ALARM RESET
Clears alarm
IN
min. 250 ms
4
GND
Ground (earth)
-
-
5
SERIES IN
Connection in series
IN
min. 250 ms
6
SERIES OUT
Connection in series
OUT
min. 250 ms
7
WARNING OUT
Malfunction warning
OUT
until a button is pressed
8
TRIGGER OUT
Multiplexer timing signal
OUT
min. 20 ms
9
GND
Ground (earth)
-
-
10
LOW TAPE OUT
low tape warning
OUT
5 min. before end of tape
11
1-SHOT REC IN
Start of recording
IN
min. 250 ms
12
GND
Ground (earth)
-
-
1 ALARM IN
When the video recorder is configured accordingly,
the purpose of 1 ALARM IN is to start the recording
function automatically in the event of an alarm
occurring.
2 ALARM OUT
The purpose of 2 ALARM OUT is to pass the alarm
signal on, as a horn signal, for example. This
contact remains active for the entire duration of the
alarm-activated recording operation.
3 ALARM RESET
The purpose of 3 ALARM RESET is to clear the
alarm and end the alarm-activated recording
operation. When this function activates, recording
stops and the audible alarm tone is shut off.
5/6SERIES IN/OUT
The purpose of the contacts designated 5 SERIES
IN and 6 SERIES OUT is to allow the connection in
series of various video recorders. Individual details
of these features are described in the appendix
(page 30).
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