GT-530 user manual v1.0
2.5
LED indicators
There are three LED indicators to help users to judge the various conditions of
GT-530. The description is as follows
：
A.
EXT(Red)
：
External Power LED to indicate whether the external power is
input or not. The description is as follows:
The external power is active
The external power is not active
on
off
B.
STA(Orange)：System LED is to indicate if the GT-530 is normal or fail.
Condition
External power
Normal
GSM Fail
PIN code is wrong
On
Blanking (1 sec) Always on or off Blinking per 50 ms
Off
Off (sleep mode)
or
Blanking (1 sec)
(wake up)
Always on
Blanking per 50 ms
C.
GSM (Green)：The modem LED can indicate the status of GSM module.
Modem normal
Modem fail
Blanking (3 sec)
Off
or
Blanking (not 3 sec)
GT-530 User Manual, Version 1.0, August 2009
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