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66 en | Advanced Mode IP Camera 200 Series
AR18-09-B003 | v1.1 | 2010.05 Installation and Operation Manual Bosch Security Systems
Scene too dark
Activate this function if tampering associated with covering the
objective (for instance, by spraying paint on it) should trigger
an alarm. The average brightness of the scene provides a basis
for recognition.
Scene too noisy
Activate this function if tampering associated with EMC
interference (noisy scene as the result of a strong interference
signal in the vicinity of the video lines) should trigger an alarm.
Reference check
Save a reference image that can be continuously compared with
the current video image. If the current video image in the
marked areas differs from the reference image, an alarm is
triggered. This detects tampering that would otherwise not be
detected, for example, if the camera is turned.
1. Click Reference to save the currently visible video- image
as a reference.
2. Click Select Area and select the areas in the reference
image that are to be monitored.
3. Check the box Reference check to activate the on-going
check. The stored reference image is displayed in black
and white below the current video image, and the selected
areas are marked in yellow.
4. Select the Disappearing edges or Appearing edges option
to specify the reference check once again.
Disappearing edges
The area selected in the reference image should contain a
prominent structure. If this structure is concealed or moved,
the reference check triggers an alarm. If the selected area is too
homogenous, so that concealing and moving the structure
would not trigger an alarm, then an alarm is triggered
immediately to indicate the inadequate reference image.