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Integrator’s Reference Manual
1-4 80-99208-1 Rev. D
Figure 1-1. Typical Modem SCADA Application Using Packet Data
For packet data connections, the GSP-1620 modem
essentially functions as a “node” on the Internet and, with its
fixed or dynamically assigned IP address, can be addressed in
real time as often as necessary to maintain application
control over the remote devices.
Figure 1-2 depicts a typical use of the GSP-1620 modem for a
SCADA application using asynchronous data.
Satellite
Globalstar
Gateway
Server
GSP-1620
Modem
SCADA Terminal
Control Port
Data Port
DTE
DCE
Tx
Rx
Host
Outdoor Antenna
Internet
Remote