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Digital Video Recorder User Manual
144
10.15 Sudden Scene Change
Purpose
Scene change detection function detects the change of surveillance environment affected by the
external factors; such as the intentional rotation of the camera and some certain actions can be
taken when the alarm is triggered.
The
Sensitivity
in the Rule Settings ranges from 1 to 100, and the higher the value is, the
more easily the change of scene can trigger the alarm.
For the analog cameras, the line crossing detection and intrusion detection conflict with
other VCA detection such as sudden scene change detection, face detection and vehicle
detection. You can only enable one function. If you have enabled line crossing detection or
intrusion detection, when you enable sudden scene change detection and apply the
settings, the following attention box pops up to remind you there is no enough resource
and ask you to disable the enabled VCA type(s) of the selected channel(s).
10.16 PIR Alarm
Purpose
A PIR (Passive Infrared) alarm is triggered when an intruder moves within the detector's field of
view. The heat energy dissipated by a person, or any other warm blooded creature such as dogs,
cats, etc., can be detected.
Step 1
Go to
Menu > Camera > VCA
.
Step 2
Select the camera to configure the VCA.
You can check the checkbox of
Save VCA Picture
to save the captured pictures of VCA
detection.
Step 3
Select the VCA detection type to
PIR Alarm
.
Step 4
Click
to configure the trigger channel, arming schedule, linkage action and PTZ linking
for the PIR alarm.
Step 5
Click the
Rule Settings
button to set the rules.
Step 6
Click
Apply
to activate the settings.