Dahua Network Video Server
User’s Manual
112
Period setup is not correct.
Motion detection zone setup is not correct.
Sensitivity is too low.
For some versions, there is hardware limit.
13. Can not 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 NVS 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 NVS 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 NVS. 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.
NVS 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 NVS network card is not good.
17. Keyboard can not control NVS.
There are following possibilities:
NVS 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.
21. Record storage period is not enough.
There are following possibilities:
