GeoVision GV-BL110D, User Manual, Page: 199 / 393

Administrator Mode
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12
To configure the tampering alarm:
1. Select the Enable option.
2. If you want the camera to ignore any movement or scene change in
certain areas, click the
button to drag areas on the camera view.
3. Select the desired detection sensitivity by moving the slider. The
higher the value, the more sensitive the camera is to scene changes.
4. In the Tolerance Time of Alarm field, specify the time length allowed
for scene changes before an alarm is generated.
5. In the Duration of Alarm field, specify the duration of the alarm after
which the triggered output device will be turned off.
6. To trigger an alarm when the scene turns dark, e.g. the lens
of camera has been covered, select
Alarm for Dark Images .
7. Click Apply to save all the settings.
8. Start monitoring to enable the function. To have output alarm, it is
required to start
Input monitoring. See 12.4 Monitoring.
When the camera has been tampered, the output device can be activated.
To turn off the output device immediately, return to this setting page, and
click
Restart Detection .