Bosch Diniop IP - NWC-0455 Installation Manual page 69

Dinion IP
| Installation Manual
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), as an
example, should trigger an alarm.
Reference check
You can save a reference image that is 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 allows you to detect tampering that
would otherwise not be detected, for example if the camera is turned.
• Click Reference to save the currently visible video image as a reference.
• Click Select area and select the areas in the reference image that are to be
monitored.
• 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 red.
Selecting the area
You can select the image areas in the reference image that are to be monitored.
The video image is subdivided into 858 square fields. You can activate or
deactivate each of these fields individually.
Note
Select only those areas for reference monitoring in which no movement
takes place and that are always evenly lit, as false alarms could otherwise
be triggered.
• Click Select area to configure the sensor fields. A new window will open.
• If necessary, click Clear all first to clear the current selection (fields marked
red).
• Left-click the fields to be activated. Activated fields are marked red.
Bosch Security Systems | 2006-05 | V2.0
EN | 69