Furuno AIS Transponder FA-50 - GBS, GGA, and GLL Sentence Formats

APPENDIX 4 DIGITAL INTERFACE
AP-9
GBS-GNSS satellite fault direction
GGA-Global positioning system (GPS) fix data
GLL-Geographic position-latitude/longitude
$
--GBS,hhmmss.ss,x.x,x.x,x.x,xx,x.x,x.x,x.x*hh<CR><LF>
| | | | | | | | |
| | | | | | | | +--------- 9
| | | | | | | +------------ 8
| | | | | | +---------------- 7
| | | | | +-------------------- 6
| | | | +----------------------- 5
| | | +--------------------------- 4
| | +------------------------------- 3
| +----------------------------------- 2
+------------------------------------------- 1
1. Not used
2. Expected error in latitude
3. Expected error in longitud
e
4. Not used
5. Not used
6. Not used
7. Not used
8. Not used
9. Checksum
$--GGA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF>
| | | | | | | | | | | | | | |
| | | | | | | | | | | | | | +-- 11
| | | | | | | | | | | | | +---- 10
| | | | | | | | | | | | +--------- 9
| | | | | | | | | | +---+------------ 8
| | | | | | | | +---+------------------ 7
| | | | | | | +------------------------- 6
| | | | | | +---------------------------- 5
| | | | | +------------------------------- 4
| | | +----+--------------------------------- 3
| +---+--------------------------------------------- 2
+------------------------------------------------------------- 1
1. Not used
2. Latitude, N/S
3. Longitude, E/W
4. GPS quality indicat
or
5. Not used
6. Not used
7. Not used
8. Not used
9. Not used
10. Not used
11. Checksum
$--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A,a*hh<CR><LF>
| | | | | | | |
| | | | | | | +------- 6
| | | | | | +--------- 5
| | | | | +----------- 4
| | | | +---------------- 3
| | +------+----------------------- 2
+--+----------------------------------- 1
1. Latitude, N/S
2. Longitude, E/W
3. Not used
4. Status: A=data valid, V=data invalid
5. Mode indicator(see note)
6. Checksum
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = estimated(dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The Mode indicator field supplements the Status field. The Status
field shall be set to V=invalid for all values of Operating Mode except
for A=Autonomous and D=Differential. The positioning system Mode
indicator and Status field shall not be null fields.