Product specifications

80-99240-1 Rev. D 2-1
2 GSP-1620 Modem Overview
The QUALCOMM Globalstar GSP-1620 Satellite Data
Modem delivers reliable digital data communications
wherever Globalstar data service is available, using
QUALCOMM’s patented CDMA technology and the
Globalstar Communications System’s constellation of 48
low-Earth-orbit (LEO) satellites.
Figure 2-1 depicts a conceptual overview of the Globalstar
GSP-1620 Modem, including its ports and antenna.
Figure 2-1 Conceptual Diagram of GSP-1620 Modem
Interface Port
DC Power
5.6V-16V
Serial Control Port
Serial Data Port
Outdoor
Antenna
UT Program Support Tool
Diagnostic Port
(UTPST)
Tx
Rx
GSP-1620
Modem
SCADA Application Terminal
Data
or AT
commands
for service programming
Modem AT
commands