AL3A-RM Quick Start Guide Version A
Document Number: 451-93156-014A
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Figure 4: Location of the SIM Reader
2.5
LED
D
ISPLAY
The A3LA-RM has three status LEDs depicted as
P
for power indicator,
I
for Iridium satellite
signal strength, and
S
). They provide a quick visual check to ensure
proper modem operations and a way to optimize antenna locations during field installation.
These LEDs provide the following information:
P: LED lights up when power is provided to the A3LA-RM.
I: LED stays solid when the signal strength is between 3–5, blinks when the signal
strength is between 1 and 2, and is off when signal strength is 0. The Light-emitting
diode (LED) also stays solid when the carrier detects (CD) line on the RS232 goes high
during a data call.
S: LED lights up when the A3LA-RM is in data mode.
Figure 5: Iridium Satellite Modem A3LA-RM
SIM Reader
Power, Iridium, Status LEDs
