Bosch NWD-495V03-20P Operating Instructions - Page 79

FlexiDomeDN IP Configuration via the browser | en 79 7.12.4 Sensitivity Sensitivity is available for the Motion+ analysis type. The basic sensitivity of the motion detector can be adjusted for the environmental conditions to which the camera is subject. The sensor reacts to variations in the brightness of the video image. The darker the observation area, the higher the value that must be selected. Min. object size You can specify the number of sensor fields that a moving object must cover to generate an alarm. This setting prevents objects that are too small from triggering an alarm. A minimum value of 4 is recommended. This value corresponds to four sensor fields. 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 detect, independently of motion alarms, manipulation of the orientation or location of a camera resulting from turning the camera mounting bracket, for instance. Selecting the area The areas of the image to be monitored by the motion detector can be selected. The video image is subdivided into 858 square sensor fields. You can activate or deactivate each of these fields individually. If you wish to exclude particular 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. 1. Click Select area to configure the sensor fields. A new win- dow opens. 2. If necessary, click Clear all first to clear the current selec- tion (fields marked red). 3. Left-click the fields to be activated. Activated fields are marked red. Bosch Security Systems Operating Instructions V 1.0 | 2006.12