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In Figure 4-73, select video loss from the type list. You can see the interface is shown as in Figure
4-78.This function allows you to be informed when video loss phenomenon occurred. You can
enable alarm output channel and then enable show message function.
Tips:
You can enable preset/tour/pattern activation operation when video loss occurs.
Please refer to chapter 4.10.3.1.1 motion detection for detailed information.
4.10.3.1.3 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 4-79. 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 4.10.3.1.1 motion detection for detailed information.
Note:
In Detect interface, copy/paste function is only valid for the same type, which means you can
not 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 4-78
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