53In X 3 1 0 H 3 1 0 H 3 1 0 H Figure 4-19, select video loss from the type list. You can see the interface is shown as inX311H311H311HFigure 4-24X .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 activation operation when video loss occurs.Please refer to chapter 4.5.2 motion detection for detail information.Figure 4-244.5.4 Camera MaskingWhen someone viciously masks lens, the system can alert you to guarantee video continuity.Camera masking interface is shown as in X 3 1 2 H 3 1 2 H 3 1 2 H Figure 4-25X .Tips:You can enable preset/tour/pattern activation operation when video loss occurs.Please refer to chapter 4.5.2 motion detection for detail 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 camera masking mode.