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VideoJet 8008 / VideoJet 8004 | Installation and Operating Manual
EN | 101
Bosch Security Systems | 2006-07 | V1.5 Configuration using a Web browser
Tamper protection
Various options for tamper protection allow you counteract typical attempts to
tamper with cameras and video lines. Run a series of tests at different times of
the day and night to ensure that the video sensor is operating as intended.
Global change %
You can define the percentage of sensor fields that must register a change
simultaneously before generating an alarm. This setting is independent of the
sensor fields selected under Select area.
This option allows you to counteract, independently of motion alarms, manipu-
lation of the orientation or location of a camera resulting from turning the camera
mounting bracket, for instance.
Scene too bright
Activate this function if tampering associated with exposure to extreme light
(for instance, shining a flashlight directly on the objective) should trigger an
alarm. The average brightness of the scene provides a basis for recognition.
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 EMR interference (noisy
scene due to strong interference signal in the vicinity of the video lines) should
trigger an alarm.
Select area
The areas of the image to be monitored by the video sensor can be selected.
The video image is subdivided into 858 square sensor fields. Each of these
fields can be activated or deactivated individually. If you wish to exclude partic-
ular regions of the camera's field of view from monitoring due to continuous
movement (by a tree in the wind, etc.), the relevant fields can be deactivated.
– Click Select area to configure the sensor fields. A new window will open.
– If necessary, click Clear first to clear the current selection (fields marked red).
– Left-click the fields to be activated. Activated fields are marked red.