XRN User GuidePRO24www.xvision.comModify each video channel parameters on the “Video Mask” interface, as shown below.1. Click “√” in front of “Enable Video Mask”2. To set mask areas, Left click and drag on your mouse to select the Alarm area (you can have eightareas). You will be left with a clear boxes with a red outline. To remove an area use the Right button anddrag on your mouse inside the box.4.2.10 Video Mask Setting