Specifications
42 Video Multiplexer with Video Motion Detection
VIDEO LOSS ALARMS
The multiplexer detects loss of video at any connected camera
input by monitoring the cameras video sync signal. The VIDEO
LOSS ALARM option controls this feature. When this option is
ON (the default), the multiplexer responds to loss of camera video
by alerting the operator and recording the alarm event on videotape.
When the VIDEO LOSS ALARM option is OFF, video loss is NOT
treated as an alarm, and no message displays.
The multiplexer does the following when it detects loss of camera
video:
1. Flashes the associated Camera (116) light.
2. Toggles the alarm relay.
3. Switches the call monitor to the lost camera input and displays
the VIDLOSS message.
4. Switches the main monitor to the multicamera format (if
ALARM MESSAGE DISPLAY is ON and the alarm camera is not
already displayed) and displays the VIDLOSS message.
5. Switches to the VCR ALARM RECORD TIME encoding rate.
6. Encodes the camera as video lost and sends it to the VCR.
Multiple video loss alarms are processed in the order they occur.
The multiplexer remains in the alarm state until ALL of the
following occur:
The ALARM DURATION time elapses.
The alarm hold input is released.