Navigation; Moving; Data - II Morrow Inc. Apollo SL50 GPS Installation Manual

Serial Interface Specifications
ID Data Format
A sddmmhh
B sdddmmhh
C ddd
D ddd
E ddddd
G sdddd
I dddd
K ddd[dd]
L dddd
Q sddd
T ---A-----
48
Table 6 Moving Map ASCII Navigation Data
Length Description
9
10
3
3
5
5
4
3 to 5
4
4
9
Present latitude
s =sign: N for north, S for south
dd = degrees
mm = minutes
hh = hundredths of minutes
Present longitude
s = sign: E for east, W for west
ddd = degrees
mm = minutes
hh = hundredths of minutes
Track (magnetic): ddd = degrees
Ground speed: ddd = knots
Distance to active waypoint: ddddd = nm x 10
Cross track error:
s = sign: R for right, L for left of course
dddd = distance off course, hundredths of nm
Desired track (magnetic):
dddd = degrees x 10
Active waypoint identifier:
ddd[dd] = ASCII waypoint identifier
Bearing to active waypoint (magnetic):
dddd = degrees x 10
Magnetic variation:
s = sign: E for east, W for west
ddd = degrees x 10
Warnings: The 4th character will be an "A"
when the navigation data is flagged, otherwise,
all characters will be dashed. All other
navigation data will be dashed when it is
flagged.
Apollo SL50 / SL60 Installation Manual