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DISTANCE
MADE
GOOD
(DMG)
This is
the
portion
of the
distance
your
boat
has
travelled that
is
parallel
to
your
desired track
(start
point
to destinationt.
SPEED OF
ADVANCE
(SOA)
This is the
portion
of
your
boat
speed directly towards the
waypoint
from
your
current
position.
SOA
is
useful to
sailing
boats by
helping
to determine
which
tack
will
-qet
them to the
walrpoint more quickly.
RELATIVE BEARING ANGLE
(RBA)
Also
callecl Steering
Angle,
this
is
the angle between
your
current heading
(COG)and
the
bearing to the
waypornt
(BRG).
This is
useful
for
adjustin-q ilutr)pi-
lots, determining
whcn
to tack. or observing leeway.
NMEA
0183
Data
Output
The
e
xtra
connector on the Star Pilot
6
rear
panel
is
a
serial
data
output
interface which
can
provide
GPS data to some
autopilots.
track
plotters
or fishfinders. The serial
data
is in
the
NMEA
0ltt3
format and is transmitted
continuously and
may not
be compatible
will
all NMEA 0183 intei'face equipment. The NMEA
018-l data is
transmitted at 4tt00 baud. 8 data bits. no
parit;-.
I stop
bit. To use the
data. thc
interconneclions
lre:
Data
Return
(This
is not
grour"rcll
View
From Front
of
Female Plug
Data
Transmit Ground
at GPS only!
Do Not
ground
at Data Receiver
end
Waypoint
Bearing
To
/
W"ypoint
(BRG)
Current
Course
(coG)
Relative
Bearing
Angle
(RBA)
Course
+
Llne
Wa
Presenl
Position
Start
l<--
2' Interconnect
Catrle
--->j
r
Part #0.1-(X)03-008
)
i
/
.t-Pin
.l-Pin
i
l+
l0' Interconnect Extension
Cable
I
I tPart
#0-l-(XX)6-001i1
|
-r-Pin
ffiEf-
The data sentences are as
fbllows:
$G
PRMC,22
4317
,4,3657.55,
N,12203.80,W,00.1
,325,1
40591
,1
5.5, E.74
$G
PRMB,A,0.02, R,STRT,WEST,3657.54,N, 1 2303.80,W,047 .9,27
0,00.
1,V"0 1
$G
PG11.3657.55. N.1 2203.80.W
$G
PBWC, 2243
1
7,3657. 54, N.
1
2303.80,W,27
0,r,255,
M, 047.9, N, WEST
$GPVTG,325,T,309,M,00.
1,N,00.2,K
$GPAPA,A,A,O.02,R,N.V,V,255,M,WEST
$GPAPB,A,A,O.O2,R,N,V,V,255,M,WEST,255,M,,
r-'
A
Velocity
Made Good
(VMG
on
Course
line)
{
ypoint
tr
I
I
--1
| /
speed
| /
Over
|
/- Ground
|
/
(SoG
on
r r!
COG line)
F__(g
Present
Position
Course
---
Llne
F* L.'
f/V,
L'<*--