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DEVICES DESCRIPTION (continued)
DB25 Multi-Interface Connector: The multi-interface connector is a male 25-pin miniature D-sub type that includes five
interfaces—RS232, DC input power, ON/OFF control line, analog audio, and Digital Peripheral Link (DPL).
Antenna: NAL Research recommends the SAF7352-IG antenna.
CAUTION: Do not connect or disconnect the GPS antenna while
device is powered. Never feed supply voltage into the active
GPS antenna.
LEDS: Four status LEDs: P for power indicator, I for Iridium
satellite signal strength, G for GPS signal strength, and S for
status.
RS232 Data Interface: This interface allows a connected DTE to
utilize the A3LA-R's modem functionality through standard AT
and extended sets of AT commands.
POWER: The A3LA-RG accepts either 4.0 V – 5.4 V or 5.0 V – 32.0 V input through pin #4 and pin #16. Note that two pins
are provided for the external DC input and two pins are provided for the associated external ground input (pin# 3 and
pin#17). The A3LA-RG is shipped with hardware set for +5.0 V to +32 V input. It can be changed to +4.0 V to +5.4 V input
through an internal jumper.
Change Voltage Input to +4.0 V to +5.4 V
CAUTION:
DISCONNECT POWER BEFORE RESETING THE JUMPER
1.
With the device turned off, remove the modem's bottom
plate to find the jumper.
2.
Set the red jumper onto the middle and left pins.
NOTE: To reset the input voltage range back to 3.6 V to +5.3
V, set the red jumper onto the middle and right pins.
A3LA-RG/A3LA-RG-MIL
QUICK START GUIDE
SAF7352-IG Antenna
Red jumper used
to set input
voltage range
Support Phone#: 571-833-2169
Support@Nalresearch.com
451-93156-009B
2023-03-31
LID
LEDs
2
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