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c)
The connections are not correct.
d)
The PTZ setting of the DVR is not correct.
e)
The protocols of the PTZ decoder and the DVR are not matched.
f)
The address of the PTZ decoder and the DVR are not matched.
g) When multiple decoders are connected, the far port of the PTZ decoder line A(B) must
connect a 120
Ω
resistance to reduce the reflection otherwise the PTZ control is not stable.
h)
The distance is too far.
12. The motion detect is not working,
Possible reasons are as follows:
a)
The time range set is not correct.
b)
The motion detect area set is not correct.
c)
The sensitivity is too low.
d)
Limited by some hardware edition.
13. I cannot login via web or CMS.
Possible reasons are as follows:
a) The systems are windows 98 or win me. We recommend updating to windows 2000sp4 or
higher Version or installing the software for low edition.
b)
ActiveX is hold back.
c)
The version is not exceeded dx8.1. Update the display card driver.
d)
Network connection failure.
e)
Network setting issues.
f)
Invalid password or user name.
g)
The CMS is not matched the DVR program version.
14. The image is not clear or there is no image in network preview state or video file playback
state.
a)
Possible reasons are as follows:
b)
Network is not stable.
c)
The user machine is resource limited.
d)
Choose the play-in-team mode in the network setup of DVR.
e)
The region shelter or channel protection is set.
f)
The user has no surveillance privilege.
g)
The real-time image of the hard disk recording machine itself is not clear.
15. Network connection is not stable.
a)
Possible reasons are as follows:
b)
Network is not stable.
c)
IP address is conflicted.
d)
MAC address is conflicted.
e)
The net card of the DVR is bad.
16. There is something wrong with the USB backup or writing a CD.
a)
Possible reasons are as follows:
b)
The rewritable machine and the hard disk are shared the same data lines.
