Operating instructions

Installation and Operating Instructions
186 Alarm Operation
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 eight 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 8, 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 8 clears. The unit drops camera 8 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 camera 5.
The Intellex unit processes multiple alarms in the order they occur.
123456781
2
3...
4
5 815 825 835 84 ...