SXBlue GPS Reference Manual
vii
5.2.10
RD1 Data Message ...................................................................................................28
6.
Frequently Asked Questions .....................................................................................................30
6.1
General .................................................................................................................................30
6.2
Support and Repairs .............................................................................................................31
6.3
Troubleshooting ....................................................................................................................31
6.4
Power, Communication, and Configuration ..........................................................................32
6.5
GPS Reception and Performance ........................................................................................33
6.6
SBAS Reception and Performance ......................................................................................34
6.7
e-Dif ......................................................................................................................................34
6.8
External Corrections .............................................................................................................35
6.9
Installation .............................................................................................................................35
7.
Troubleshooting .........................................................................................................................36
7.1
Troubleshooting Checklist ....................................................................................................36
7.2
Using the LEDs to Troubleshoot...........................................................................................36
8.
Complete NMEA 0183 Interface................................................................................................38
8.1
NMEA Message Elements....................................................................................................38
8.2
General Commands..............................................................................................................38
8.2.1
$JASC,D1..................................................................................................................39
8.2.2
$JAIR .........................................................................................................................40
8.2.3
$JASC,VIRTUAL .......................................................................................................40
8.2.4
$JALT ........................................................................................................................41
8.2.5
$JLIMIT......................................................................................................................41
8.2.6
$JAPP........................................................................................................................42
8.2.7
$JBAUD.....................................................................................................................43
8.2.8
$JCONN ....................................................................................................................43
8.2.9
$JDIFF.......................................................................................................................43
8.2.10
$JK ............................................................................................................................44
8.2.11
$JPOS .......................................................................................................................44
8.2.12
$JQUERY,GUIDE......................................................................................................45
8.2.13
$JRESET...................................................................................................................45
8.2.14
$JSAVE .....................................................................................................................45
8.2.15
$JSHOW....................................................................................................................46
8.2.16
$JT.............................................................................................................................47
8.2.17
$JBIN .........................................................................................................................48
8.3
GPS Commands ...................................................................................................................48
8.3.1
$JASC .......................................................................................................................49