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System Administrator’s Guide
Document K14392V1 Rev A 121
07/07
To Configure CSD
1. Continue or start a Maintenance Session for the Rapid Eye site.
2. Click the Video tab. By default, Record/Motion/Image is selected.
3. Select CSD. A panel is displayed for configuring CSD. See figure
7–14.
4. You have the option of enabling the automatic detection of three types of sabotage:
Blind, Blur or Moved, singly or in combination.
5. Lower or raise the threshold of detection for each type of sabotage, by horizontally
dragging each Detection Threshold cursor, as needed. The default value is at midpoint
(50), on a scale of 1 to 100. See figure
7–15.
6. Select Alarm or Log as needed; see
Setting an Event to Trigger an Alarm or to Be
Logged, p.
187. Each type of sabotage detection that is enabled will use the selection.
If neither Alarm nor Log is selected, camera sabotage is not reported.
Tip
The Blind type of CSD can be used for fixed cameras and for PTZ cameras.
Blur and Moved are CSD types designed for fixed cameras only, not for PTZ use. Using pan,
tilt or zoom triggers Blur and Moved.
Calibration of CSD
Fig. 7–15. Calibration of Blind-type CSD.
Detection meter
Above each slider for setting the detection threshold of Blind, Blur and Moved, a meter shows the
CSD activity. The meter is green when activity is below the threshold, and red when the activity is
above. If there is no activity, the meter is empty. See figure
7–15.
Blind. A camera can be blinded by too much light or too little. To calibrate, cover the camera with
an opaque cloth or box, or prop a strong light in front of the camera. Blinding a camera also
triggers the Blur-type and Moved-type of sabotage. Note that turning lights on/off at the scene can
indirectly blind a camera. Panning a PTZ camera from a light colored scene to a darker scene (or
vice versa) can also have that effect. Lowering the threshold can compensate.
Blur. It is not recommended to alter a camera's focus after installation. To simulate sabotage of
focus, use a lens-like sheet of glass or plastic, or a transparent container of water, and prop it in
front of the camera, during calibration.
Moved. See the next section.
Forty-eight seconds
Activity in a scene that could be considered as sabotage drives the meter from green to red. If
such activity lasts less than 48 seconds, it does not trigger an alarm or log entry. This is designed
to calibrate CSD and to reduce the number of false positives. For example, a person walking by a