162
Intellex
®
Digital Video Management System Installation and Operating Instructions
Alarm Operations
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Alarm Groups
During normal operation, the Intellex unit samples cameras in
camera number order. Each time through the sequence, the unit
samples one image from each camera (unless disabled). For
example, with nine cameras connected, the sequence is:
When an alarm is detected, the unit increases the number of
samples from the camera associated with the alarm. It adds the
camera to the alarm group. After the unit samples each nonalarm
camera, it samples from all cameras in the alarm group. As
alarms start and stop, cameras are added to and removed from
the alarm group.
For example, if alarms are detected at inputs 5 and 9, the unit
creates an alarm group containing these two cameras. The
sequence changes as shown below. The group is repeated after
each nonalarm camera.
Suppose alarm input 9 clears. The unit drops camera 9 from the
alarm group, but camera 5 is still in the alarm group.
Suppose an alarm is now detected at alarm input 2. The unit adds
camera 2 to the alarm group, which still includes camer a5.
The Intellex unit processes multiple alarms in the order they
occur.
1
2
3
4
5
6
7
8
1
2
3
.
.
.
4
5
1
5
2
5
3
5
8
4
.
.
.
8
8
8
5
1
5
2
5
3
5
4
5
6
5
7
.
.
.
2
5
1
2
5
3
2
5
4
2
5
6
.
.
.
