Specifications

38 Simplex Multiplexer
Controlled Alarm Recording
When alarm recording is controlled by the Simplex, the VCR
records cameras with alarm signals as alarm video. The re-
corder responds to the alarm signal provided by the Simplex
system. It enters the alarm recording mode and changes to the
alarm record speed. The VCR remains in the alarm mode until
released by the Simplex. Controlled alarm recording requires
both video connections and alarm connections between the
Simplex and the VCR.
To set up the system for controlled alarm recording:
1. Connect the Simplex vcr in connector to the VCR’s
video out and the Simplex vcr out connector to the VCR’s
video in.
2. Connect a wire from the VCR ground to the Simplex alarms
connector pin 17 (alarm output common).
3. Connect a wire from the VCR alarm input to the Simplex
alarms connector pin 19 (if VCR alarm input polarity is
active low) or pin 18 (if VCR alarm input polarity is active
high).
4. Set the Simplex ALARM DURATION option to the number
of seconds you wish each alarm event to be recorded.
5. Set the VCR’s Alarm Duration option to MANUAL.
6. Set the Simplex VCR RECORD TIME option to match the
VCR’s normal recording speed.
7. Set the Simplex VCR ALARM RECORD TIME option to
match the VCR’s alarm recording speed.