User's Manual

GV300N User manual
TRACGV300NUM001 - 21 -
Table 10. Definition of Device Status and LED
Note:
1. GSM LED cannot be configured.
2. GPS LED and PWR LED can be configured to turn off after a period of time by using the
configuration tool.
3. Fast flashing is about 60 ms ON/780 ms OFF.
4. Slow flashing is about 60 ms ON/1940 ms OFF.
3.13. Serial Port/UART Interface
There are two lines dedicated to the Serial Port/UART interface (TXD and RXD). TXD/RXD are
standard RS232 signal.
LED Device status LED status
Device is searching GSM network. Fast flashing
(Note 3)
Device has registered to GSM network. Slow flashing
(Note 4)
GSM
(Note 1)
SIM card needs pin code to unlock. ON
GPS chip is powered off. OFF
GPS sends no data or data format error occurs. Slow flashing
GPS chip is searching GPS info. Fast flashing
GPS
(Note 2)
GPS chip has gotten GPS info. ON
No external power and internal battery voltage is lower
than 3.35V.
OFF
No external power and internal battery voltage is
below 3.5V.
Slow flashing
External power in and internal battery is charging. Fast flashing
PWR
(Note 2)
External power in and internal battery is fully charged. ON