DVR systems DVRxx04LE-A Series - Manual (Page 45)

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Figure 4-22
4.5.4 Camera Masking
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. Camera
masking interface is shown as in Figure 4-23. Here you can enable alarm output or show
message in the screen.
Tips:
You can enable preset/tour/pattern activation operation when video loss occurs.
Please refer to chapter 4.5.2 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 camera masking mode.
Figure 4-23
4.6 Alarm Setup and Alarm Activation
Before operation, please make sure you have properly connected alarm devices such as light,
buzzer.
4.6.1 Go to alarm setup interface
In the main menu, from Setting to Alarm, you can see alarm setup interface. See Figure 4-24.
4.6.2 Alarm setup
Alarm interface is shown as below. See Figure 4-24.