iSXblue/SXBlue II GNSS Series Technical Reference Manual
103
Command
Description
OTHER
Specifying OTHER instructs the iSXBlue/SXBlue II GNSS to use external corrections input through
the opposite port from which you are communicating (valid for Port A and B)
PORTy
Specifying PORTy (where y is A, B or C) instructs the SXBlue II GPS to use external corrections
input through the specified port (A = Bluetooth, B = RS-232, C = USB)
THIS
THIS instructs the receiver to use external correction input through the same port from which you are
communicating
WAAS*
Specifying WAAS instructs the iSXBlue/SXBlue II GNSS to use SBAS corrections. This is also the
response when using the Local-Base application
X
Specifying X instructs the receiver to use the Auto-Dif mode (the receiver will respond back with
$JDIFF,AUTO to a $JDIFF query)
RTK
This is the response when running the Local-Dif and Local-RTK applications
NONE
In order for the iSXBlue/SXBlue II GNSS to operate in autonomous mode, the NONE argument may
be specified in this command.
BEACON
Specifying BEACON instructs the SXBlue II-B GPS receiver to use the internal beacon demodulator
as the source of differential correction
LBAND
Specifying LBAND instructs the SXBlue II-L GPS to use OmniSTAR differential correction while in
the LBAND application
5.6
Auto-Dif Commands in Autonomous Mode
This current section provides information related to the NMEA messages accepted by the
iSXBlue/SXBlue II GNSS’ optional Auto-Dif application. The following table provides a brief
description of the commands supported by the Auto-Dif application for its control and operation in
Autonomous mode.
The following section (4.8) provides information on using Auto-Dif in Base Station mode.
Table 5-7 Auto-Dif Commands in Autonomous Mode
Message
Description
$RAD,1
This command is used to display the current reference position
$JRAD,1,P
Store present position as reference
$JRAD,1,lat,lon,alt
Store entered position as reference
$RAD,2
Use reference position as calibration point
$JRAD,3
Use current position as calibration point
The following subsections provide detailed information relating to the use of each command.
Note - Please ensure that you save any changes that you wish to survive beyond the current power-
up by using the $JSAVE command and wait for the ‘
$> Save Completed’
response.
5.6.1
$JRAD,1
This command is used to display the current reference position.
This command has the following format:
$JRAD,1<CR><LF>
The iSXBlue/SXBlue II GNSS will reply with a response similar to the following: