⚫ PTZ decoder and DVR protocol is not compatible.
⚫ 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. 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 addresses conflict.
⚫ PC or DVR network card is not good.
16. Burn error /USB back error.
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