Table B-1 Aviation Output Sentence Format - Garmin GTR 225 Installation Manual

Table B-1 describes the Type 1 output sentence item designator (id) and item data (dddd) fields. If data for
these sentences is invalid or unavailable, dashes ("-") are used to fill in all non-blank character positions.
Ident (1 byte)
z
a a a a a
A
s
B
s
C
d d d
D
s s s
E
d d d d d
G
s n n n n
I
d d d d
K
c c c c c
L
d d d d
Q
s d d d
S
- - - - f
T
- - - - - - - - -
l (lower case Lima)
d d d d d d
Note:
[1] The altitude is not output if the RS-232 port is configured as "Aviation Output 2."
190-01182-02
Rev. F

Table B-1 Aviation Output Sentence Format

Data (10 bytes)
1 2 3 4 5 6 7 8 9 0
Current GPS altitude in feet [1]
Current latitude, where:
s
dd
d d m m h h
mm
hh
Current longitude, where:
s
ddd
d d d m m h h
mm
hh
Track in whole degrees
Ground speed in knots
Distance to waypoint in tenths of nautical miles
Cross track error, where:
s
nnnn
Desired track in tenths of degrees
Destination waypoint identifier (will be blank filled on right if
less than 5 characters in identifier)
Bearing to destination waypoint in tenths of degrees
Magnetic variation, where:
s
ddd
NAV valid flag status, where:
f - N (NAV flagged) or - (NAV valid)
Warnings status, only data transmitted are dashes (-). Used
to indicate end of Type 1 sentences.
Distance to destination waypoint in tenths of nautical miles.
Description
- N (north) or S (south)
- degrees
- minutes
- hundredths of minutes
- E (east) or W (west)
- degrees
- minutes
- hundredths of minutes
- L (left) or R (right) of course
- error in hundredths of nautical miles
- E (east) or W (west)
- tenths of degrees
GTR 225/GNC 255 TSO Installation Manual
Page B-2