NavCom Sapphire Rev.J - Manual (Page 229)

Sapphire Technical Reference Manual Rev. J
229
1.187 STARFIREALTSAT (ASCII)
SF-3050 Sapphire SF-3040
The Sapphire receiver has one channel dedicated to tracking the StarFire

global dGPS signal.
This signal is broadcast on channels (assigned frequency bands) from several geostationary
communication satellites, each located to provide signal coverage over a portion (roughly one
third) of the earth. Each geographic region has a default frequency or channel assigned. These
default channels are programmed into the receiver firmware. In normal operation, the receiver
automatically selects the appropriate default channel based on the current position. This
command can be used to override selection of the default satellite ID for StarFire

. Note that
the alternative channel is selected by its satellite ID. The selected ID must match one of the
known satellite IDs for the selection to be successful. The valid ID numbers are 358, 402, 484,
525, 609 and 643.
This command is used only in rare circumstances when temporary channel
assignments are made to support satellite vehicle maintenance or changes.
Command: [STARFIREALTSAT] on_off, {satellite_id}
Parameter Definition
on_off Keyword (ON, OFF)
satellite_id Satellite ID number (integer)
Example: [STARFIREALTSAT] ON, 358
Override the default StarFire

satellite ID selection with an alternate value.