User Manual of Portable Video Recorder
44
Dialing failed.
Possible Reasons:
a)
No SIM card is installed on the device.
b)
The format of the SIM card does not match that of the device.
Solutions:
1.
Install the SIM card on the device.
2.
Select the SIM card which has the same format of the device.
It’s too slow to transmit images.
Possible Reasons:
a)
The current network signal is bad.
b)
The bitrate of the network transmission is too large.
Solutions:
1.
If dialing is adopted, check the current signal strength; if Wi-Fi networks is adopted, check that whether there is another
wireless network with the same frequency band, and if yes, use a new wireless network which has the only frequency
band.
Wireless networks with the same frequency band cause interference to each other, and it will
decrease the network
transmission bandwidth.
2.
Adjust the transmission bitrate according to the actual network bandwidth.
The buttons of the device or the icons on the screen are out of use.
Possible Reason:
The device crashes.
Solution:
Reboot the device and try it again.
The device is offline on the platform.
Possible Reasons:
a)
Dialing failed.
b)
The platform settings are incorrect.
Solutions:
1.
Check the dialing status. Configure the dialing parameters again if needed.
2.
Configure the platform settings again according to the actual needs.
3.
Restore the device to factory settings and configure the parameters after the device reboots.
The fingerprint cannot be recognized.
Possible Reason:
The fingerprint information has not been registered on the device.
Solution:
Register the fingerprint information on the device first.
