SXBlue GPS Reference Manual
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$JDIFF,diff<CR><LF>
Where the differential mode variable, ‘diff’, has one of the following values:
diff
Description
OTHER
Specifying OTHER instructs the SXBlue GPS to use external corrections input
through the opposite port from which you are communicating
WAAS
Specifying WAAS instructs the SXBlue GPS to use SBAS corrections
NONE
In order for the SXBlue GPS to operate in autonomous mode, the NONE argument
may be specified in this command.
8.2.10 $JK
This command is used by the SXBlue GPS to enable the e-Dif option.
This command will have the following format:
$JK,x…<CR><LF>
Where ‘x…’ is the subscription key provided by Geneq and is 10 characters in length. If
you send the $JK command without a subscription key as follows, it will return the expiry
date of the subscription.
$JK<CR><LF>
Reply:
$>JK,12/31/2003,1
8.2.11 $JPOS
This command is used to speed up the initial acquisition when changing continents with
the SXBlue GPS (for example, powering it for the first time in Europe after it has been
tested in Canada). This will allow it to begin the acquisition process for the closest
SBAS spot beams. This will save some time with acquisition of the SBAS service,
however, use of this message is typically not required due to the quick overall startup
time of the SXBlue GPS receiver.
This command has the following layout:
$JPOS,lat,lon<CR><LF>
Where ‘lat’ and ‘lon’ have the following requirements:
Position Component
Description
lat
Latitude component must be entered in decimal degrees. This component does
not have to be more accurate than half a degree.
lon
Longitude component must be entered in decimal degrees. This component does
not have to be more accurate than approximately half a degree.
Note – this command is not normally required for operation of the SXBlue GPS.
