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158 en | Configuring the AutoDome Junior HD AutoDome Junior HD
F.01U.275.803 | 6.0 | 2012.11 Installation Manual Bosch Security Systems, Inc.
Sensitivity
The basic sensitivity of the tamper detection can be adjusted
for the environmental conditions to which the camera is
subject.
The algorithm reacts to the differences between the reference
image and the current video image. The darker the observation
area, the higher the value that must be selected.
Trigger delay (s)
You can set delayed alarm triggering. The alarm is only triggered
after a set time interval in seconds has elapsed and then only if
the triggering condition still exists. If the original condition has
been restored before this time interval elapses, the alarm is not
triggered. This allows you to avoid false alarms triggered by
short-term changes, for example cleaning activities in the direct
field of vision of the camera.
Global change
You can set how large the global change in the video image
must be for an alarm to be triggered. This setting is
independent of the sensor fields selected under Select Area.
Set a high value if fewer sensor fields need to change to trigger
an alarm. With a low value, it is necessary for changes to occur
simultaneously in a large number of sensor fields to trigger an
alarm.
This option allows you to detect, independently of motion
alarms, manipulation of the orientation or location of a camera
resulting from turning the camera mount bracket, for instance.
Global change
Activate this function if the global change, as set with the
Global change slide control, should trigger an alarm.
NOTICE!
This and the following parameter are only accessible if the
reference check is activated.