Furuno FAR-2807 Operator's Manual page 268

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APPENDIX
DPT - Depth
$--DPT,x.x,x.x,x.x*hh<CR><LF>
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+--------- 3
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+------------ 2
+---------------- 1
1. Water depth relative to transducer, in meters
2. Offset from transducer, in meters (see notes 1 and 2)
3. Maximum range scale in use
4. Checksum
NOTE1 "positive"=distance from transducer to water-line.
"-"=distance from transducer to keel.
NOTE2 For IEC applications the offset should always be applied
so as to provide depth relative to the keel.
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>
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+---+--------------------------------------------- 2
+------------------------------------------------------------- 1
1. UTC of position
2. Latitude, N/S
3. Longitude, E/W
4. GPS quality indicator (see note)
5. Number of satellite in use,00-12, may be different from the number in view
6. Horizontal dilution of precision
7. Antenna altitude above/below mean sea level, m
8. Geoidal separation, m
9. Age of differential GPS data
10. Differential reference station ID, 0000-1023
11. Checksum
NOTE
0 = fix not available or invalid
1 = GPS SPS mode, fix valid
2 = differential GPS, SPS mode, fix valid
3 = GPS PPS mode, fix valid (GPS_PPS)
4 = Real Time Kinetic. Satellite system used in RTK mode with fixed integers (GPS_RTK_I)
5 = Float RTK. Satellite system used in RTK mode with floating fingers (GPS_RTK_F)
6 = Estimated (dead reckoning) mode
7 = Manual input mode
8 = Simulator mode
The GPS quality indicator shall not be a null field.
Position data shown in green in case of 1 and 5; red in case of "0" and "6-8".
AP-12
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| +--------- 9
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| +---+------------ 8
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+---+------------------ 7
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+------------------------- 6
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| +------------------------------- 4
+----+--------------------------------- 3
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+-- 11
+---- 10

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