A3LA-RS Quick Start Guide Version A
Document Number: 451-92899-002A
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Figure 7: SIM Chip Reader
7.
Connect a DTE such as a computer, laptop, microcontroller, etc. to the modem DB15
port using the RS232/data cable model HRC-24-7R.
The cable can be purchased separately from NAL Research. The HRC-24-7R cable
consists of a full DB-9 serial connector and two terminal leads for DC power input. A
three-wire (TX, RX, and GND) serial cable can also be used if flow control is not required
[1]. The A3LA-RS automatically adjusts to the DTE baud.
8.
Connect an external antenna to the A3LA-RS.
9.
Ensure the antenna has a full view of the sky and the cable loss between the modem
and antenna is less than 3 dB.
10.
Supply DC power (can be at any voltage between 3.5 VDC–5.4 VDC) to the power input
of the HRC-24-7R.
The modem will automatically be ON/OFF when DC power is applied/removed if the
EXT_ON_OFF pin is left unconnected (pin 1).
11.
If power to the modem is cycled, ensure the elapsed time between each power cycle is
at least 2 seconds.
NAL Research’s AC adapter model LA-3098 (purchase separately) can be used to power
the A3LA-RS.
12.
Wait for about 15 seconds for the modem to register with the Iridium satellite network.
SIM Chip
SIM Reader
WARNING:
To comply with FCC RF exposure requirements, a minimum separation
of 20 cm is required between the antenna and all persons.
