Pelco C2900M-B(1/03 Use the Local sensitivity slide bar to set, Required to trigger an alarm

Table F. Alarm Settings (Continued)

Configuration	Default Setting	Description
Item
		7.	Use the Local sensitivity slide bar to set
			detection sensitivity. You need to adapt sensitivity
			to the respective environment and the acceptable
			false alarm rate: for a lower false alarm rate
			select a lower sensitivity and vice versa.
			Experiment to find the best setting. Use of the
			motion detection feature is recommended only
			indoors and under controlled lighting conditions.
		8.	Use the Average n[frames] slide bar to define
			for how long or over how many pictures motion in
			the scene must be detected before an alarm will
			be released. If the value is low, even movement
			over a small period triggers an alarm. If the value
			is high, movement over a longer period is
			required to trigger an alarm.
		9.	Use the Object min size [nxn blocks] slide bar
			to designate the minimum number of cells in the
			frame a moving object must fill to trigger an
			alarm. You can set the value between 1*1 and
			6*6 (2*2 is recommended). If the size of the
			object in the picture exceeds the value you set,
			motion detection triggers an alarm.
		10.	The Alarm indicator box lets you set a
			threshold so an alarm is triggered only if the
			sensitivity of the video sensor is exceeded. Thus,
			something such as background noise caused by
			the camera can be filtered to avoid unwanted
			alarms.
			Pull up or down on the blue line to observe the
			motion detector. Set it straight above the basic
			deviation of the red curve.
		11.	Press Default to get the default settings for
			motion detection.

The following conditions must be met for motion detection to function:

¥Motion detection must be activated.

¥At least one cell must be activated.

¥Sensitivity must be set higher than zero.

¥The master alarm may also have to be activated.

(Continued on next page)

56 C2900M-B (1/03)