Bosch NWD-455V03-20P Operating Instructions - Page 78

Scene too noisy, Reference check, Reference, Select area, Selecting the area, Clear all, NOTICE

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78 en | Configuration via the browser FlexiDome IP 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 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. 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 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. NOTICE! i 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. 1. Click Select area to configure the sensor fields. A new window will open. 2. If necessary, click Clear all first to clear the current selection (fields marked red). V 1.0 | 2006.12 Operating Instructions Bosch Security Systems

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78
en | Configuration via the browser
FlexiDome IP
V 1.0 | 2006.12
Operating Instructions
Bosch Security Systems
an alarm. The average brightness of the scene provides a basis
for recognition.
Scene too noisy
Activate this function if tampering associated with EMC inter-
ference (noisy scene as the result of a strong interference sig-
nal in the vicinity of the video lines) 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 trig-
gered. This allows you to detect tampering that would other-
wise 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 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 indi-
vidually.
1.
Click
Select area
to configure the sensor fields. A new win-
dow will open.
2.
If necessary, click
Clear all
first to clear the current selec-
tion (fields marked red).
i
NOTICE!
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.