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3.
Replace the broken headset.
The SD card cannot be detected.
Possible Reasons:
a)
The SD card is damaged.
b)
The file system in the SD card is damaged.
Solutions:
1.
Insert the SD card to the card reader and then connect it to the computer. If you cannot open the storage space of SD
card, replace the damaged SD card.
2.
Back up the data stored on the SD card and then format it.
3G Dialing failure
Possible Reasons:
a)
No 3G SIM card is installed on the device.
b)
The format of the 3G SIM card does not match that of the device.
c)
The external antenna has not been installed when the slave SIM card is used.
Solutions:
1.
Install the 3G SIM card on the device.
2.
Select the 3G SIM card which has the same format of the device.
3.
Install the external antenna when using the slave SIM card.
The network transmission indicator does not light after successful dialing.
Possible Reasons:
a)
The platform settings are incorrect.
b)
The platform account conflicted.
c)
It's in the platform registration process.
d)
Only one indicator is available for the device and there is a process with higher priority than network transmission
running on the device.
Solutions:
1.
Edit the platform settings to according to the actual needs.
2.
Use another platform account to avoid the conflict.
3.
The indicator will light after the platform registration process is complete.
4.
Check the current indicator status. For details, see Table 2.2 Status Light Description.
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 3G 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
transmission bandwidth.
User Manual of Portable Video Recorder
100
decrease the network
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