User's Manual

SysOnChip
SOC LBS LOOK’ET User Manual
11
1.3.6. LEDs
LOOK’ET has three LEDs for indicating operation status.
LED name Mark Description
Battery LED
It indicates the battery status.
In boot stage after power on, it blinks 4 times with 1 second period indicating boot
completion. If the boot stage has some error, it blinks forever.
After boot stage, It blinks if the battery voltage level is under 3.6V else on.
GPS LED
It indicates the GPS sync status.
This LED is on if the GPS has detected and synced. But GPS does not have
synced and is under searching sync, this LED is blinked.
GSM/GPRS LED
It indicates the GSM Tx / Rx status.
In boot stage after power on, it blinks 4 times with 1 second period indicating boot
completion. If the boot stage has some error, it blinks forever.
After boot stage,this LED is on when the GSM Tx or Rx operation is executed. LED
is off when LOOK’ET is in Idle mode.
Table 2. LED indications