16
check them, you can check SIM card following next
steps:
1
）
call SIM card of device and check if you can hear
connecting ring.
2
）
Check if vehicle is in the area where there is no
GSM/WCDMA signal.
3
）
Check if one device or all devices are offline in
the area . If all devices are offline, you should ask
operator If network is OK.
4
）
Check if SIM card has enough balance.
5
）
If device becomes offline on the last day of one
month, please check data transferring is closed or
not.
6
）
Inquiry parameters of device via commands and
check replied parameters.
6.3 No positioned
If the GPS is active, but device cannot be
positioned for long time, please check device:
1
）
If the vehicle is in the place where there is no
GPS signal.
2
）
The upside of device should be installed with
face toward the sky.
3
）
The GSM/WCDMA and GPS signal may be
Summary of Contents for GPT19
Page 6: ...6 Ⅱ Appearance Components Top Front Towards sky Megnet Light sensor Bottom ...
Page 12: ...12 ...
Page 13: ...13 ...
Page 14: ...14 此入插入 GPT19 的 APP 内部界面图 和讲解 ...
Page 19: ...19 Warranty Card NAME TEL Address Model IMEI Number Selling Unit Purchase Date YY MM DD ...
Page 20: ...20 Maintenance Records Engineer Completion Date Records Description Date ...
