Gen - Generic Status Information; Gga - Global Positioning System Fix Data; Gll - Geographic Position, Latitude/Longitude - Furuno VR-7000 Installation Manual

APPENDIX 4 DIGITAL INTERFACE

GEN - Generic status information

$--GEN,hhhh,hhmmss.ss,hhhh,.....,hhhh *hh<CR><LF>
1 2
1. Index of first packed binary field in sentence
Index of first group in GEN sentence. Address is represented in hexadecimal format in the
HEX range 0000 trough FFFF. The 16-bit address is formatted as fixed 4-character HEX field.
2. Time stamp
This may be a null field.
3. Packed binary field
The packed binary field is represented as a 6-bit value.
The 16-bit value is formatted as fixed 4-character HEX field. This may be a null field.
4. Variable number of packed binary field
Optional repeated packed binary field. Each repeat increases the index by one.
Up to seven repetitions yielding a total of 128 bits per sentence is possible.
5. Packed binary field
The packed binary field is represented as a 6-bit value.
The 16-bit value is formatted as fixed 4-character HEX field. This may be a null field.

GGA - Global positioning system fix data

$--GGA,hhmmss.ss,llll.lll,a,yyyyy.yyy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF>
1 2 3
1. UTC of position (no use)
2. Latitude (0.00000 to 9000.00000)
3. N/S
4. Longitude (0.00000 to 18000.00000)
5. E/W
6. GPS quality indicator (1 to 5, 8)
7. Number of satllite in use (00 to 99)
8. Horizontal dilution of precision (0.00 to 999.99)
9. Antenna altitude above/below mean sea level (-999.99 to 9999.99)
10. Units of antenna altitude, m
11. Geoidal separation (-999.99 to 9999.99)
12. Units of geoidal separation, m
13. Age of differential GPS data (0 to 99)
14. Differential reference station ID (0000 to 1023)

GLL - Geographic position, latitude/longitude

$--GLL,llll.lll,a,yyyyy.yyy,a,hhmmss.ss,a,x*hh<CR><LF>
1 2 3
1. Latitude (0.00000 to 9000.00000)
2. N/S
3. Longitude (0.00000 to 18000.00000)
4. E/W
5. UTC of position (no use)
6. Status (A=data valid V=data invalid)
7. Mode indicator (A=Autonomous D=Differential S=Simulator)
AP-18
3 4 5
4 5 6 7 8 9 10 11 12 13 14
4 5 6 7