Q-See QC40198 - Manual (Page 134)

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QC40198 User Manual
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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.