NAL Research Corporation (TN2004-39-V3.2)
4
7.
Wait for about 15 seconds for the modem to register with the Iridium satellite network.
8.
The A3LA-I is basically a “black box” with no indicators of any kind (power on light, satellite
registration status, satellite signal strength, etc.). This can pose great difficulties to first-time users
who are not familiar satellite modems. For application developers, NAL Research recommends the
use of an audio breakout box model SYN-AD-LBT and a handset model SCN4052A in combination
with the A3LA-I. This setup can be a useful diagnostic tool allowing the modem status to be
displayed on LCD of the handset.
9.
Use any terminal emulator software (such as Windows® HyperTerm) and AT commands to
communicate with the modem. However, the A3LA-I is shipped with a CD labeled
“Manuals/Software for Model A3LA-I.” There is a terminal emulator software package on the CD
called SatTerm. NAL Research recommends the use of SatTerm with the A3LA-I since it provides a
complete reference manual for all AT commands through user selected buttons for quick and easy
access.
10.
Check the followings if a connection cannot be made:
•
Antenna has a full view of the sky
•
The PIN number has been removed from the SIM chip
•
Power source provides enough current
11.
Check the followings if using the breakout box and handset:
•
Red LED light on the breakout box and LCD screen on the handset are ON. If not, check for
appropriate power input.
•
The <Enter PIN> message is not displayed on the LCD. If the <Enter PIN> message
appears on the LCD, enter the appropriate PIN number (the default PIN is 1111). The
handset can be used to remove the PIN permanently.
•
Displayed satellite signal strength on the LCD must be at least 3 bars. Re-arrange/re-
located the Iridium antenna if the signal strength remains at 3 bars or below.
SYN-AD-LBT
SCN4052A