Video Loss - Dahua NVR21-4KS3 Series User Manual

3) Select one region, for example, click
4) Drag on the screen to select the region that you want to detect.
5) Configure the parameters.
Parameter
Name
Sensitivity
Threshold
You can configure up to four detection regions. When any one of the four regions
activates motion detection alarm, the channel where this region belongs to will
activate motion detection alarm.
6) Right-click the page to exit.
Step 4 Click Setting next to Schedule to configure the alarm schedule.
Step 5 Configure the anti-dither period.
If multiple alarms occur during the anti-dither period, the system only record the event
once.
Step 6 Configure alarm linkage. For details, see Table 5-50. This section uses associating siren as
an example.
Enable Alarm Hub, select the alarm hub as needed, and then select siren as needed.
Step 7 Click Apply.

5.10.5.2 Video Loss

When the video loss occurs, the system performs alarm linkage actions.
Procedure
Step 1 Select Main Menu > ALARM > Video Detection > Video Loss.
Table 5-56 Detection region parameters
Description
Enter a name for the region.
Every region has an individual sensitivity value.
The bigger the value is, the easier to trigger an alarm.
Adjust the threshold for motion detection. Every region of every channel
has an individual threshold.
319
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User's Manual