Q-See QC40198 - Manual (Page 44)

NAVIGATION AND CONTROLS
QC40198 User Manual
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4.5.3 Video Loss
As illustrated in Figure 4-25, select video loss from the Event Type list. This function informs you when video
loss has 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. Refer to chapter 4.5.2 motion
detection for detailed information.
Figure 4-25
4.5.4 Camera Masking
When someone viciously masks lens, the system can alert you to guarantee video continuity. Camera masking
interface is shown in Figure 4-26.
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 camera masking mode.