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DCVI Standalone DVR User’s Manual
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MAC address conflict.
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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.
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System uses too much CPU resources. Please stop record first and then begin
backup.

Data amount exceeds backup device capacity. It may result in burner error.

Backup device is not compatible.

Backup device is damaged.
17. Keyboard can not 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 can not been disarmed.
There are following possibilities:

Alarm setup is not correct.

Alarm output has been open manually.

Input device error or connection is not correct.

Some program versions may have this problem. Please upgrade your system.
19. Alarm function is null.
There are following possibilities:

Alarm setup is not correct.

Alarm cable connection is not correct.

Alarm input signal is not correct.

There are two loops connect to one alarm device.
20. Remote control does not work.
There are following possibilities:

Remote control address is not correct.

Distance is too far or control angle is too small.

Remote control battery power is low.

Remote control is damaged or DVR front panel is damaged.
21. Record storage period is not enough.
There are following possibilities: