Simrad MX575D - Page 40

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Technical specications | HS80/HS80A/MX575C/MX575D User Manual
8) HDT – Heading, True
Actual vessel heading in degrees (True) produced by any device or system producing true
heading.
$GPHDT,x.x,T*hh<CR><LF>
1 2
¼ Notes:
1 Heading
2 Degrees True
(9) RMC - Recommended Minimum Specic GPS Data
Time, date, position, course and speed data provided by a GPS navigation receiver. This
sentence is transmitted at intervals not exceeding 2 seconds. All data fields must be
provided: null fields used only when data is temporarily unavailable.
$GPRMC,hhmmss.ss,A,llll.llll,a,yyyyy.yyyy,a,x.x,x.x,xxxxxx,x.x,a,a,a*hh<CR><LF>
1 2 3 4 5 6 7 8 9 10 11-12-13
¼ Notes:
1 UTC of Position fix
2 Status
A = data valid
V = Navigation receiver warning
3, 4 Latitude, N/S
5, 6 Longitude, E/W
7 Speed over ground, knots
8 Course Over Ground, True
9 Date: dd/mm/yy
10, 11 Magnetic variation, degrees E/W:
Easterly variation (E) subtracts from True course
Westerly variation (W) add to True course
12 Mode indicator:
A = Autonomous mode
D = Differential mode
E = Estimated (DR)
M = Manual input mode
S = Simulator mode
N = Data not valid
13 RAIM Status:
S=RAIM Safe
U=RAIM Unsafe
C= Caution
V=Not Valid