Hdt Heading, True; Rmc Recommended Minimum Specific Gnss Data; Vhw Water Speed And Heading - Simrad ES70 - INSTALLATION REV A Installation Manual

HDT Heading, true

This telegram is used to transfer heading information from a gyro.
Format
$--HDT,x.x,T*hh<CR><LF>
Format description
= talker identifier
1
– –
2 = telegram identifier
HDT
= heading, degrees true
3
x.x,T

RMC Recommended minimum specific GNSS data

This telegram contains time, date, position, course and speed data provided by a global
navigation satellite system (GNSS) receiver.
Format
$--RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,
x.x,z.z,ddmmyy,r.r,a,a*hh<CR><LF>
Format description
= talker identifier
1
– –
2 = telegram identifier
RMC
= coordinated universal time (UTC) of position fix
3
hhmmss.ss
4 = status, characters
A
5 = latitude nort/south. Characters
llll.ll,a
6 = longitude east/west. Characters
yyyyy.yy.a
bearing.
= speed over ground, knots
7
x.x
8 = course over ground, degrees true
z.z
= date
9
ddmmyy
10 = magnetic variation, degrees east/west. Characters
r.r,a
identifies the bearing.
11 = mode indicator
a

VHW Water speed and heading

This telegram contains the compass heading to which the vessel points and the speed of
the vessel relative to the water.
Format
$--VHW,x.x,T,x.x,M,x.x,N,x.x,K*hh<CR><LF>
343522/A
(data valid) or (Navigation receiver warning) are used.
A V
(North) or
N
Telegram formats
(South) identifies the bearing.
S
(East) or (West) identifies the
E W
(East) or
E
(West)
W
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