Dahua Technology XVR4 Series, Руководство пользователя

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FAQ 292
 Sensitivity is too low.

For some versions, there is hardware limit.
13. Cannot log in client-end or web.
There are following possibilities:

For Windows 98 or Windows ME user, please update your system to Windows 2000 sp4.
Or you can install client-end software of lower version. Please note right now, our DVR is
not compatible with Windows VISTA control.
 ActiveX control has been disabled.

No dx8.1 or higher. Please upgrade display card driver.

Network connection error.
 Network setup error.

Password or user name is invalid.
 Client-end is not compatible with DVR program.
14. There is only mosaic no video when preview or playback video file remotely.
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.
15. 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.
16. Burn error /USB back 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 might result in burner error.

Backup device is not compatible.
 Backup device is damaged.
17. Keyboard cannot control DVR
There are following possibilities:

DVR serial port setup is not correct.
 Address is not correct.
 When there are several switchers, power supply is not enough.

Transmission distance is too far.
18. Alarm signal cannot be disarmed.
There are following possibilities:
 Alarm setup is not correct.

Alarm output has been open manually.
 Input device error or connection is not correct.