Qvis iBox nvr User Manual page 161

14. It shows a mosaic or no video when previewed, either locally or remotely.
These are the following possibilities:

Network fluency is not good.

Client-end resources are limited.

There is multiple-cast group setup in device. This mode can result in a mosaic being
produced. Usually we do not recommend this mode.

There is a privacy mask or channel protection setup.

Current user has no right to monitor video footage.

Local device video output quality is substandard.
15. Network connection is not stable.
These are the following possibilities:

Network is not stable.

IP address conflict.

MAC address conflict.

PC or device network card is not good.
16. Burn error /USB2.0 back error.
These are the following possibilities:

Burner and device are using the same data cable.

System uses too much CPU resources. Please stop recording 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 cannot control device.
These are the following possibilities:

Device 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.

Input device error or connection is not correct.

Some program versions may have this problem. Please upgrade your system.
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