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• PTZ decoder and DVR address is not compatible.
• When there are several decoders, please add 120 Ohm between the PTZ decoder A/B
cables furthest end to delete the reverberation or impedance matching. Otherwise the
PTZ control is not stable.
• The distance is too far.
12. Motion detection function does not work.
There are following possibilities:
• 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
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.
