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1
The address of remote control is wrong
2
The distance of remote control is too far or the angle is too deflective
3
The battery of remote control is used up
4
The remote control is damaged or the front panel of video recorder is damaged
14.
Ask: can't login WEB
Answer: possible reasons:
1
Check if the network is connected, check if the LINK or 100M LED on panel displays
correctly; use ping xxx.xxx.xxx.xxx (the IP address of the DVR) to check if the network is
connected
2
Windows XP or Vista operation system is recommended, IE6.0 or IE7.0 browser is adopted
3
ActiveX control is inhibited, please install ActiveX control manually
4
No dx8.1 or above version is installed, upgrade the driver of display card
15.
Ask: there is mosaic in network preview picture and record file playback or no image at all
Answer: possible reasons:
If DVR is accessed through Internet, when IE is used to login, please select "WAN" in
1
"Network environment", and select appropriate network bandwidth in "Setting > System
setting > Network environment" option.
Please try right key "Close window", then "Open window"
2
Ask: when setting is carried out at IE end, why "Other user is configuring..." window pops
16.
up
Answer: possible reasons:
1
This may means that others are setting DVR. Please check if the configuration interface of
DVR end is in open state, please exit.
17.
Ask: digital video recorder can't control PTZ
Answer: possible reasons:
1
Front end PTZ failure
2
PTZ decoder setting, wiring, installation are incorrect
3
Wiring is incorrect
4
The setting of PTZ in digital video recorder is incorrect
5
PTZ decoder and the protocol of digital video recorder not matched
6
PTZ decoder and the address of digital video recorder not matched
7
When multiple decoders are connected, the farthest end of A B lines of PTZ decoder should
be added with a 120 Ω resistor to eliminate reflection and make impedance matching,
otherwise unstable PTZ control may be resulted.
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