© Copyright Qvis® All documentation rights reserved. 68Figure 4-314.6.4 Camera MaskingWhen someone viciously masks the lens, or the output video is in one-color due to theenvironments light change, the system can alert you to guarantee video continuity. Cameramasking interface is shown as in Figure 4-32. You can enable “Alarm output “or “Showmessage” function when camera masking alarm occurs. Sensitivity: The value ranges from 1 to 6. It mainly concerns the brightness. The level 6has 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 4.6.2 motion detection for detailed information.Note: In Detect interface, copy/paste function is only valid for the same type, which means youcan not copy a channel setup in video loss mode to camera masking 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 clickDefault button at the camera masking interface, you can only restore default cameramasking setup. It is null for other detect types. System only enables camera masking function during the period you set here. It is nullfor motion detect or video loss type.