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GBS-GNSS satellite fault direction
$--GBS,hhmmss.ss,x.x,x.x,x.x,xx,x.x,x.x,x.x*hh<CR><LF>
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+------------------------------------------- 1
GGA-Global positioning system (GPS) fix data
$--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>
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+---+--------------------------------------------- 2
+------------------------------------------------------------- 1
GLL-Geographic position-latitude/longitude
$--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A,a*hh<CR><LF>
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+--+----------------------------------- 1
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = estimated(dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
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+--------- 9
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+---------------- 7
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+-------------------- 6
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+------------------------------- 3
+----------------------------------- 2
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| +---+------------ 8
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+---+------------------ 7
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+------------------------- 6
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+----+--------------------------------- 3
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+----------- 4
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+---------------- 3
+------+----------------------- 2
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.
APPENDIX 4 DIGITAL INTERFACE
1. Not used
2. Expected error in latitude
3. Expected error in longitude
4. Not used
5. Not used
6. Not used
7. Not used
8. Not used
9. Checksum
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+-- 11
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+---- 10
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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
1. Not used
2. Latitude, N/S
3. Longitude, E/W
4. GPS quality indicator
5. Not used
6. Not used
7. Not used
8. Not used
9. Not used
10. Not used
11. Checksum
AP-9
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