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z Client-end resources are limited.
z There is multiple-cast group setup in DVR. This mode can result in a mosaic
appearance. Usually we do not recommend this mode.
z There is privacy mask or channel protection setup.
z Current user has no right to monitor.
z DVR local video output quality is not good.
15 Network connection is not stable.
There are following possibilities:
z Network is not stable.
z IP address conflict.
z MAC address conflict.
z PC or DVR network card is not good.
16 Burn error /USB back error.
There are the following possibilities:
z Burner and DVR are in the same data cable.
z System uses too many CPU resources. Please stop recording first and then begin
backup.
z Data amount exceeds backup device capacity. It may result in burner error.
z Backup device is not compatible.
z Backup device is damaged.
17 Keyboard cannot control DVR.
There are the following possibilities:
z DVR serial port setup is incorrect.
z Address is incorrect.
z When there are several switchers, power supply is not enough.
z Transmission distance is too far.
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