User's Manual
337
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Sensitivity is too low.
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For some versions, there is hardware limit.
13.
Cannot log in client-end or web.
There are following possibilities:
●
For Windows 98 or Windows ME user, please update your system to Windows 2000 sp4. Or
you can install client-end software of lower version. Please note right now, our DVR is not
compatible with Windows VISTA control.
●
ActiveX control has been disabled.
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No dx8.1 or higher. Please upgrade display card driver.
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Network connection error.
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Network setup error.
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Password or username is invalid.
●
Client-end is not compatible with DVR program.
14.
There is only mosaic no video when preview or playback video file remotely.
There are following possibilities:
●
Network fluency is not good.
●
Client-end resources are limit.
●
There is multiple-cast group setup in DVR. This mode can result in mosaic. Usually we do not
recommend this mode.
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There is privacy mask or channel protection setup.
●
Current user has no right to monitor.
●
DVR local video output quality is not good.
15.
Network connection is not stable.
There are following possibilities:
●
Network is not stable.
●
IP address conflict.
●
MAC address conflict.
●
PC or DVR network card is not good.
16.
Burn error /USB back error.
There are following possibilities:
●
Burner and DVR are in the same data cable.
●
System uses too much CPU resources. Please stop record first and then begin backup.
●
Data amount exceeds backup device capacity. It might result in burner error.
●
Backup device is not compatible.
●
Backup device is damaged.
17.
Keyboard cannot control DVR.
There are following possibilities:
●
DVR serial port setup is not correct.
●
Address is not correct.
●
When there are several switchers, power supply is not enough.
●
Transmission distance is too far.
18.
Alarm signal cannot be disarmed.
There are following possibilities:
●
Alarm setup is not correct.
●
Alarm output has been open manually.
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