351
5.8.3.4 Audio Detect (Optional)
Please make sure you are connecting to the smart network camera, otherwise you can not use
IVS function!
System can generate an alarm once it detect the audio input is abnormal or audio volume changes.
From main menu->Setup->Event->Audio detect, you can see an interface shown as in Figure 5-72.
Input abnormal: Check the box here, system can generate an alarm once the audio input is
abnormal.
Intensity change: Check the box here, system can generate an alarm once the audio volume
becomes strong.
Sensitivity: It refers to the audio recognition sensitivity. The higher the value is, the higher the
sensitivity is.
Threshold: It is to set intensity change threshold. The smaller the value is, the higher the sensitivity
is.
For detailed setups, please refer to chapter 5.8.3.1.1 motion detect for detailed information.
Figure 5-72
5.8.3.5 Alarm
Before operation, please make sure you have properly connected alarm devices such as buzzer. The
input mode includes local alarm and network alarm.
5.8.3.5.1 Local Alarm
The local alarm interface is shown as in Figure 5-73. It refers to alarm from the local device.
Summary of Contents for nvr4208-8p
Page 1: ...Dahua Network Video Recorder User s Manual V 2 7 0 ...
Page 160: ...145 Figure 3 4 3 5 5 NVR41HS W S2 Series Please refer to Figure 3 5 for connection sample ...
Page 171: ...156 Figure 3 18 3 5 19 NVR78 Series Please refer to Figure 3 19 for connection sample ...
Page 172: ...157 Figure 3 19 3 5 20 NVR78 16P Series Please refer to Figure 3 20 for connection sample ...
Page 173: ...158 Figure 3 20 3 5 21 NVR78 RH Series Please refer to Figure 3 21 for connection sample ...
Page 174: ...159 Figure 3 21 3 5 22 NVR70 Series Please refer to Figure 3 22 for connection sample ...
Page 175: ...160 Figure 3 22 3 5 23 NVR70 R Series Please refer to Figure 3 23 for connection sample ...
Page 176: ...161 Figure 3 23 3 5 24 NVR42V 8P Series Please refer to Figure 3 24 for connection sample ...
Page 177: ...162 Figure 3 24 ...
Page 243: ...228 Figure 4 89 Figure 4 90 ...
Page 244: ...229 Figure 4 91 Figure 4 92 ...
Page 259: ...244 Figure 4 110 Figure 4 111 ...
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Page 355: ...340 Figure 5 55 Figure 5 56 ...
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