Dvr-systems NVR38xx Series Manuel d'utilisateur télécharger pdf (Page 122)

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 PTZ decoder and device 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 device

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 device 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 device. 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.

 Device 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 device network card is not good.

16. Burn error /USB back error.

There are following possibilities:

 Burner and device are in the same data cable.

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Dvr-systems NVR38xx Series Manuel d'utilisateur Page 122