Bosch NEI-Series User Manual download pdf (Page 82)

82 en | Configuration via IP, Advanced Mode Dinion IP Infrared Imager

F.01U.263.416 | 3.1 | 2012.09 User Manual Bosch Security Systems, Inc.

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 [slide control]

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 [checkbox]

Activate this function if the global change, as set with the

Global change slide control, should trigger an alarm.

Scene too bright

Activate this function if tampering associated with exposure to

extreme light (for instance, shining a flashlight directly on the

lens) 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

lens (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

Select this checkbox to 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

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Bosch NEI-Series User Manual Page 82