Q-See QC40198 User Manual page 134

TROUBLESHOOTING
12. Combo DVR cannot control PTZ.
Possible causes:

Front panel PTZ error

PTZ decoder setup, connection or installation is not correct.

Cable connection is not correct.

PTZ setup is not correct.

PTZ decoder and combo DVR protocol and/or address do not match.

When there are several decoders, please add 120 Ohm between the PTZ decoder A/B cables
furthest end to deter reverberation or impedance matching. Otherwise the PTZ control is not stable.

The PTZ camera is too far from the DVR.
13. Motion detection function does not work.
Possible causes:

Period setup is not correct.

Motion detection zone setup is not correct.

Sensitivity is too low.
14. Cannot log in client-end or web.
Possible causes:

For Windows 98 or Windows ME user, please update your system to Windows 2000 sp4 or later. Or
you can install client-end software of lower version.

ActiveX control has not been enabled.

Video card driver on computer may need to be upgraded.

Network connection error.

Network setup error.

Password or user name is invalid.
15. There is only mosaic no video when previewing or playing back video file remotely.
Possible causes:

Network bandwidth is not sufficient.

Computer does not have enough resources to handle video flow.

There is multiple-cast group setup in combo DVR. This mode can result in mosaic. Usually we do
not recommend this mode.

There is privacy mask or channel protection setup.

Current user does not have monitoring rights.

Combo DVR local video output quality is not good.
16. Network connection is not stable.
Possible causes:

Network is not stable.

IP address conflict.

MAC address conflict.

PC or combo DVR network card is not good.
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QC40198 User Manual