Unisight M4Core D-Seres Manual page 148

Digital Network Video Surveillance System
There are following possibilities:
 Network fluency is not good.
 Client-end resources are limit.
There is multiple-cast group setup in DVR. This mode can result in mosaic. Usually we do not

recommend this mode.
 There is privacy mask or channel protection setup.
 Current user has no right to monitor.
 DVR local video output quality is not good.
16. Network connection is not stable.
There are following possibilities:
 Network is not stable.
 IP address conflict.
 MAC address conflict.
 PC or DVR network card is not good.
17. USB backup error.
There are following possibilities:
 Burner and DVR are in the same data cable.
 System uses too much CPU resources. Please stop record first and then begin backup.
 Data amount exceeds backup device capacity. It may result in burner error.
 Backup device is not compatible.
 Backup device is damaged.
18. Alarm signal can not been disarmed.
There are following possibilities:
 Alarm setup is not correct.
 Alarm output has been open manually.
Input device error or connection is not correct.

 Some program versions may have this problem. Please upgrade your system.
19. Alarm function is null.
There are following possibilities:
 Alarm setup is not correct.
Alarm cable connection is not correct.

 Alarm input signal is not correct.
 There are two loops connect to one alarm device.
Unisight Digital Technologies, Inc.
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