124
z
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.
z
The distance is too far.
12. Motion detection function does not work.
There are following possibilities:
z
Period setup is not correct.
z
Motion detection zone setup is not correct.
z
Sensitivity is too low.
z
For some versions, there is hardware limit.
13. Can not log in client-end or web.
There are following possibilities:
z
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.
z
ActiveX control has been disabled.
z
No dx8.1 or higher. Please upgrade display card driver.
z
Network connection error.
z
Network setup error.
z
Password or user name is invalid.
z
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:
z
Network fluency is not good.
z
Client-end resources are limit.
z
There is multiple-cast group setup in DVR. This mode can result in mosaic. 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 following possibilities:
z
Burner and DVR are in the same data cable.
z
System uses too much CPU resources. Please stop record first and then begin backup.
Содержание DVR72XX-V
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