199
z PTZ setup is incorrect.
z PTZ decoder and DVR protocol is incompatible.
z PTZ decoder and DVR address is incompatible.
z When there are several decoders, please add 120 Ohm (impedance matching)
between the PTZ decoder A/B cables’ farthest end to delete the reverberation.
Otherwise the PTZ control is not stable.
z The distance is too far.
12 Motion detection function does not work.
There are the following possibilities:
z Period setup is incorrect.
z Motion detection zone setup is incorrect.
z Sensitivity is too low.
z For some versions, there is a hardware limit.
13 Cannot log in client-end or web.
There are the following possibilities:
z For Windows 98 or Windows ME user, please update your system to Windows 2000
sp4. You can also install client-end software of a previous 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 Only a mosaic is displayed, no video appears when preview or playback video are filed
remotely.
There are following possibilities:
z Network fluency is not good.
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