Garmin GNC 255 User Manual

GTR 225/GNC 255 TSO Installation Manual 190-01182-02
Page B-2 Rev. B
Table B-1. Aviation Output Sentence Format
* The altitude is not output if the RS-232 port is configured as “Aviation Output 2.”
* The line feed character is not output if the RS-232 port is configured as “Aviation Output 2.”
Ident (1 byte)
Data (10 bytes)
1 2 3 4 5 6 7 8 9 0
Description
z
a a a a a
Current GPS altitude in feet *
A
s d d m m h h
Current latitude, where:
s - N (north) or S (south)
dd - degrees
mm - minutes
hh - hundredths of minutes
B
s d d d m m h h
Current longitude, where:
s - E (east) or W (west)
ddd - degrees
mm - minutes
hh - hundredths of minutes
C
d d d
Track in whole degrees
D
s s s
Ground speed in knots
E
d d d d d
Distance to waypoint in tenths of nautical miles
G
s n n n n
Cross track error, where:
s - L (left) or R (right) of course
nnnn - error in hundredths of nautical miles
I
d d d d
Desired track in tenths of degrees
K
c c c c c
Destination waypoint identifier (will be blank filled on
right if less than 5 characters in identifier)
L
d d d d
Bearing to destination waypoint in tenths of degrees
Q
s d d d
Magnetic variation, where:
s - E (east) or W (west)
ddd - tenths of degrees
S
- - - - f
NAV valid flag status, where:
f - N (NAV flagged) or - (NAV valid)
T
- - - - - - - - -
Warnings status, only data transmitted are dashes (-).
Used to indicate end of Type 1 sentences.
l (lower case
Lima)
d d d d d d
Distance to destination waypoint in tenths of nautical
miles.

Garmin GNC 255 Specifications

General

Channels	760
Frequency Range	118.000 to 136.975 MHz
Channel Spacing	25 kHz
Input Voltage	11 to 33 VDC
Dimensions	159 x 50 x 193 mm