GE DVMRe CT II, User Manual

Page: 89 / 96

8.3 Alarm/Event Fields
The two least significant bits are currently used for the Event commands. Bits 2 and 3 are used for the
Alarm commands.
7 6 5 4 3 2 1 0
MSB LSB
Event Start
Event Stop
Alarm Start
Alarm Stop
8.4 Alarm Actions
No Alarm Change – 0000 00XXb
If both the start and stop bits are clear, the alarm status and camera record rates will remain
unchanged.
Start Alarm – 0000 01XXb
If only the start bit is set, the DVMRe will enter the Alarm mode. The selected camera will become the
alarm camera. Pre-alarm video will be recorded and the Alarm Record Rate will be initiated.
NOTE Every Start Alarm command should subsequently be followed with a Stop Alarm command
at some point. Failure to do so will render that alarm input useless, even if the alarm was
latched and gets acknowledged from the front panel. A Stop Alarm followed by a Start Alarm
will have to be sent to create a new alarm on that channel.
Stop Alarm – 0000 10XXb
If only the stop bit is set, the selected camera’s alarm status will be cleared. If no other alarms are
present, the DVMRe will exit the alarm mode.
Momentary Alarm – 0000 11XXb
If both the start and stop bits are set, a momentary alarm will be initiated on the selected camera. Pre-
alarm video will be recorded at the alarm record rate, after which the DVMRe will continue to record
video at the normal record rate.
0150-0313B 89 DVMRe CT II