9-13 Chapter 9 Specification
9
Input data format
■ HDT – Heading true
$--HDT,xxx.x,T*hh<CR><LF>
1 2
1: Heading, degrees true
2: Checksum
This is a deprecated sentence which has been replaced by THS.
■ THS – True heading and status .
$--THS,xxx.x,a*hh<CR><LF>
1 2 3
1: Heading, degrees true
2: Mode indicator
A = Autonomous
E = Estimated (dead reckoning)
S = Simulator mode
V = Data not valid (including standby)
3: Checksum
This sentence replaces the deprecated sentence HDT
■ ROT – Rate of turn
$--ROT,x.x,A*hh<CR><LF>
1 2 3
1: Rate of turn, °/min, "-" = bow turns to port
2: Status
A = data valid
V = data invalid
3: Checksum
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