DVR systems PSS ENG - Manual (Page 109)

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 NVD has four video outputs and each vide output can integrate video from four channels to
a four-channel video window.
 Please note you need to log in the NVD if you want to use it.
5.2.2.1 Operation
NVD operation consists of four sections: operation, tour, decode tour and TV adjustment. All the
operations become active when NVD is running normally.
On the top left, you can view the added NVD device. On the top button, you can view other video
sourcing devices.
Remotely control the NVD to open the video and then switch the split mode. The operation is the
same as the general video zone. But the video window only displays current connected device IP
and channel serial number, the NVD video is not in the window. See Figure 5-2.
Figure 5-2
If you see the following dialogue box, you can see the NVD has reached the max decode
capacity. See Figure 5-3.
Figure 5-3
Please close the video channel, until you see the following dialogue box. See Figure 5-4.
Now the NVD has restored capacity and can run properly.