Furuno GP-150 Installation Manual page 130

APPENDIX
GNS - GNSS fixed data
HDG – Heading, deviation and variation
HDT - Heading, true
MTW- Water temperature
AP-14
$--GNS,hhmmss.ss,llll.lll,a,yyyyy.yyy,a,c--c,xx,x.x,x.x,x.x,x.x,x.x*hh<CR><LF>
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| +---+--------------------------------------------- 2
+------------------------------------------------------------- 1
1. UTC of position
2. Latitude, N/S
3. Longitude, E/W
4. Mode indicator
5. Total number of satllite in use,00-99
6. HDOP
7. Antenna altitude, metres, re:mean-sea-level(geoid)
8. Geoidal separation
9. Age of differential data
10. Differential reference station ID
11. Checksum
$--HDG,x.x,x.x,a,x.x,a*hh<CR><LF>
1. Magnetic sensor heading, degrees
2. Magnetic deviation, degrees E/W
3. Magnetic variation, degrees E/W
4. Checksum
$--HDT,x.x,T*hh<CR><LF>
$--MTW,x.x,C*hh<CR><LF>
1. Temperature, degrees C
2. Checksum
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| | | | | +------------------ 7
| | | | +---------------------- 6
| | | +------------------------- 5
| | +------------------------------ 4
+-------+--------------------------------- 3
| | | | | |
| | | | | +--------- 4
| | | +--+----------- 3
| +----+----------------- 2
+------------------------ 1
| | |
| | +--------- 2
+----+----------- 1
1. Heading, degrees true
2. Checksum
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| | +--------- 2
+--+----------- 1
| | | |
| | | +--- 11
| | +------ 10
| +---------- 9
+-------------- 8