iSXblue/SXBlue II GNSS Series Technical Reference Manual
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$JBAUD,4800,PORTB
$JBAUD,57600,PORTC
$JBIN,95,1,PORTC
$JBIN,96,1,PORTC
$JASC,GPGGA,1,PORTA
$JASC,GPGSV,1,PORTA
$JASC,GPRRE,0,PORTA
$JASC,GPVTG,1,PORTA
$JASC,GPVTG,1,PORTC
$JASC,RTCM,0,PORTA
$JASC,RTCM,0,PORTB
$JASC,RTCM,0,PORTC
$JAGE,60
$JALT,NEVER
$JSMOOTH,LONG
$JDIFF,WAAS
$JMASK,10
$JWAASPRN,AUTO
$JSAVE
When sending commands to the receiver while messages are already activated, you will not see clearly
what you are typing in HyperTerminal. The reply of the receiver will also be mixed with the NMEA
messages that are being received. You might open a “log” text file if you want to monitor the responses of
the receiver.
Each time that you change the configuration of the iSXBlue/SXBlue II, you may wish to save the new
configuration so the receiver does not have to be reconfigured again after a power cycle.
To save the settings, issue the $JSAVE command and the receiver will record the current configuration to
non-volatile memory. The iSXBlue/SXBlue II will let you know when the save process has been
completed which can take approximately five seconds (see following sub-section).
Note – When turning messages ON at a specific baud rate, make sure the number of messages sent
do not “saturate” or overflow the communication port. The Bluetooth port’s factory default is
230400 baud and should never be changed. The USB and Serial ports can be set up to 460800 baud
(most computers might not support more than 115200 baud on their serial ports).
3.2.1.3
Sending Configuration Files to the Receiver
If you have many commands to send to the iSXBlue/SXBlue II or
have multiple units to configure, instead of sending them manually to
the receiver, you can create a configuration text file using any text
editor (Microsoft Notepad preferably).
The file contains each command that would normally be sent,
followed by a carriage return (“Enter”) depending on the text editor
used. The last command in the file should normally be a $JSAVE
command.
Care must be taken when using the $JBAUD command to change the
baud rate of a port. If you are connected via HyperTerminal to the
receiver for example on the Serial Port at 9600 baud, and send or
include in the configuration file a $JBAUD,4800,PORTB, then the
receiver will immediately change the baud rate to 4800 and the
communication with HyperTerminal will be lost. In this case,
“Disconnect” from the receiver, change the COM port properties to
match the new 4800 baud, and “Reconnect” to the receiver.
Figure 3-1 Sample Config. File
Factory default and Sample configuration files are provided on the SXBlue Series CD-ROM supplied
with the receiver.
To send a configuration file to the iSXBlue/SXBlue II, use the “Transfer / Send Text File…” feature from
the HyperTerminal menu and select the text file to be sent. Commands will be sent while messages are
being received (the line delay can be modified in the ASCII setup, see section 3.3.1.1). If a $JSAVE
command is included at the end of the file, the last reply will be “Save Complete”.
