Furuno FS-1575 Operator's Manual page 174

APPENDIX 4 DIGITAL INTERFACE (IEC 61162-1)
• GNS - GNSS fix data
$**GNS,hhmmss.ss,llll.lll,a,IIIII.III,a,c--c,xx,x.x,x.x,x.x,x.x,x.x,a*hh<CR><LF>
1
1. UTC of position (000000.00 - 235959.99)
2. Latitude (0000.0000 - 9000.0000)
3. N/S
4. Longitude (00000.0000 - 18000.0000)
5. E/W
6. Mode indicator
N=No fix A=Autonomous D=Differential P=Precise R=Real Time Kinematic
F=Float RTK E=Estimated Mode M=Manual Input Mode S=Simulator Mode
7. Total number of satellites in use (00 - 99)
8. HDOP (no use)
9. Antenna altitude, meters (no use)
10. Geoidal separation (no use)
11. Age of differential data (no use)
12. Differential reference station ID (no use)
13. Navigational status indicator (S=Safe C=Caution U=Unsafe V=Navigational status not valid)
• RMC - Recommended minimum specific GNSS data
$**RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,ddmmyy,x.x,a,a,a*hh<CR><LF>
1
1. UTC of position fix (000000.00 - 235959.99)
2. Status (A=data valid, V=navigation receiver warning)
3. Latitude (0000.0000 - 9000.0000)
4. N/S
5. Longitude (00000.0000 - 18000.0000)
6. E/W
7. Speed over ground, knots (no use)
8. Course over ground, degrees true (no use)
9. Date (010100 - 311249)
10. Magnetic variation, degrees (no use)
11. E/W
12. Mode indicator (A= Autonomous D= Differential E=Estimated (dead reckoning) mode
F=Float RTK M=Manual input mode N=No fix P=Precise R=Real time kinematic S= Simulator mode
13. Navigational status indicator (S=Safe C=Caution U=Unsafe V=Navigational status not valid)
AP-20
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