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User's Manual
324
You can configure up to four detection regions. When any one of the four regions
activates an alarm, the channel where this region belongs to will activate an alarm.
6) Right-click to exit the page.
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
Network Video Recorder_User's Manual
.
Step 7
Click
Apply
.
5.10.6 Audio Detection
The system can generate an alarm once it detects the audio is not clear, the tone color has changed
or there is abnormal or audio volume change.
Procedure
Step 1
Select
Main Menu
>
ALARM
>
Audio Detection
.
Step 2
Select a channel and then click
to enable detection of audio exception and
intensity change.
●
Audio Exception
: The system generates an alarm when the audio input is abnormal.
●
Intensity Change
: Set the sensitivity and threshold. An alarm is triggered when the
change in sound intensity exceeds the defined threshold.
Step 3
Click
Setting
next to
Schedule
to configure the alarm schedule.
Step 4
Configure alarm linkage. For details, see Table 5-50.
Step 5
Click
Apply
.
5.10.7 Thermal Alarm
Background Information
After receiving the alarm signal from the connected thermal devices, the system can recognize the
alarm type, and then trigger the corresponding alarm actions.
The system supports heat alarm, temperature (temperature difference) and cold/hot alarm.
●
Heat alarm: The system generates an alarm once it detects there is a fire.
●
Temperature (temperature difference): The system triggers an alarm once the temperature
difference between two positions is higher or below the specified threshold.
●
Cold/hot alarm: The system triggers an alarm once the detected position temperature is higher
or below the specified threshold.
Summary of Contents for NVR21-4KS3 Series
Page 1: ...Network Video Recorder User s Manual ZHEJIANG DAHUA VISION TECHNOLOGY CO LTD V2 3 5...
Page 97: ...User s Manual 77 Figure 2 118 Alarm input port 1...
Page 123: ...User s Manual 103 S3 NVR41 EI NVR41 P EI NVR41 8P EI Figure 3 48 Typical connection...
Page 129: ...User s Manual 109 Series Figure 3 56 Typical connection...
Page 142: ...User s Manual 122 Figure 5 9 Unlock pattern login...
Page 156: ...User s Manual 136 Figure 5 24 AcuPick human detection...
Page 225: ...User s Manual 205 Figure 5 92 AcuPick human detection...
Page 399: ...User s Manual 379 Figure 5 268 Pattern login...
Page 436: ...User s Manual 416 Figure 5 306 File management Step 2 Click Add Figure 5 307 Add file...
Page 456: ...User s Manual 436 Figure 5 330 Shutdown 2...
Page 485: ...User s Manual...