Garmin GNC 420A Installation Manual page 116

The following table 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) Data (10 bytes)
1 2 3 4 5 6 7 8 9 0
a a a a a
z
s d d
A
s d d d
B
d d d
C
s s s
D
d d d d d
E
s n n n n
G
d d d d
I
c c c c c
K
d d d d
L
s d d d
Q
- - - - f
S
- - - - - - - - -
T
l (lower case
d d d d d d
Lima)
* The line feed character is not output if the RS-232 port is configured as "Avtn no alt".
* The altitude is not output if the RS-232 port is configured as "Avtn no alt".
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Description
Current GPS altitude in feet *
m m h h
Current latitude, where:
s - N (north) or S (south)
dd - degrees
mm - minutes
hh - hundredths of minutes
m m h h
Current longitude, where:
s - E (east) or W (west)
ddd
mm
hh - hundredths of minutes
Track in whole degrees
Ground speed in knots
Distance to waypoint in tenths of nautical miles
Cross track error, where:
s - L (left) or R (right) of course
nnnn - error in hundredths of nautical miles
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 - E (east) or W (west)
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.
- degrees
- minutes
- tenths of degrees
400 SERIES INSTALLATION MANUAL
P/N 190-00140-02