Dahua HCVR5104C User Manual page 427

4.9.3.1.3 Tampering
When someone viciously masks the lens, or the output video is in one-color due to the
environments light change, the system can alert you to guarantee video continuity.
Tampering interface is shown as in Figure 4- 141. You can enable "Alarm output "or
"Show message" function when tampering alarm occurs.
Sensitivity: The value ranges from 1 to 6. It mainly concerns the brightness. The

level 6 has the higher sensitivity than level 1. The default setup is 3.
Tips:
You can enable preset/tour/pattern activation operation when video loss occurs.
Please refer to chapter 4.9.3.1.1 motion detection for detailed information.
Note
In Detect interface, copy/paste function is only valid for the same type, which

means you cannot copy a channel setup in video loss mode to tampering mode.
About Default function. Since detection channel and detection type may not be the

same, system can only restore default setup of current detect type. For example, if
you click Default button at the tampering interface, you can only restore default
tampering setup. It is null for other detect types.
System only enables tampering function during the period you set here. It is null

for motion detect or video loss type.
Figure 4- 140
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