Pelco Developer Network (PDN)

AlarmArrayConfiguration Issues



In some elements which are marked as being in base64 format, it would be good to note in older deployed firmware versions that it is non-standard base64. Specifically, this non-standard base64 data ALWAYS has an equal sign (=) appended at the end.

Camera Association

The camera association of an alarm within an alarm array is stored in the system manager as an attribute called 'CameraAssoc'. You will need to query the system manager for the alarm's device attributes to determine its settings. (This also applies to other encoder attributes such as priority, polarity, severity, and so on.)

Consequently the data stored in the AlarmArrayConfiguration service is not used.
If there are no camera associations, there will be not be any attributes. Moreover until you update the alarm array's configuration via AlarmArrayConfiguration's SetConfiguration action, there will be no alarm array related attributes in the system manager.

Number of Alarm Inputs

ModelNumber of inputs
Spectra IV IP7
Spectra IV7
Spectra III7 (Spectra III SE only)
Spectra Mini1
NET5301T3 (programmable)
NET5308T8 (programmable), expandable to 16
EW5301T Wireless3 (programmable)
DX81008, 16, 24, or 32

Alarm Dwell Time

All 1st generation IP cameras have 'alarm dwell time'. That is if the IP camera's alarm is triggered for the 1st time, that alarm will stay activated for the 'dwell time' (by default approximately 30 seconds) before resetting the video quality to 'low'. If an additional alarm triggered during this period, the IP camera will not 'toggle' (switching video quality from 'low' to 'high'); instead it would just extend the alarm dwell time (for another 30 seconds at the point in time the 2nd alarm was triggered).

For example, three alarms were triggered. The 2nd alarm triggered 5 seconds after the 1st. At this point the dwell time would last another 30 seconds starting when the 2nd alarm was triggered (for a total or 35 seconds; assuming that another alarm does not trigger). However if another alarm triggers 7 seconds after the 2nd alarm, the dwell time would be extended for another 30 seconds; at the point in time that the 3rd alarm was triggered (12 seconds after the 1st alarm). Therefore the total dwell time would become 42 seconds.