Gps Data Message Format - Garmin G3X Installation Manual

I.6

GPS Data Message Format

The GPS Data message is transmitted once per second.
Field Name
Escape character
UTC year
UTC month
UTC day
UTC hour
UTC minute
UTC second
Latitude hemisphere
Latitude degrees
Latitude minutes
Longitude hemisphere
Longitude degrees
Longitude minutes
Position status
Horizontal position error
Altitude
East/west velocity
direction
East/west velocity
magnitude
North/south velocity
direction
North/south velocity
magnitude
Vertical velocity
direction
190-01115-01
Rev. L
Table I-3 GPS Data Message Format
Offset Width Units
0 1
1 2 years
3 2 months
5 2 days
7 2 hours
9 2 minutes
11 2 seconds
13 1
14 2 degrees
0.001
16 5
minutes
21 1
22 3 degrees
0.001
25 5
minutes
30 1
31 3 meters
34 6 meters
40 1
0.1
41 4
meters/sec
45 1
0.1
46 4
meters/sec
50 1
G3X Installation Manual - RS-232 Text Output Format
Notes
'@'
last two digits of UTC year
'N' for north or 'S' for south
minutes x 1000
'E' for east or 'W' for west
minutes x 1000
'g' = 2D GPS position
'G' = 3D GPS position
'd' = 2D differential GPS
position
'D' = 3D differential GPS
position
'S' = simulated position
'_' = invalid position
height above or below MSL
'E' for east or 'W' for west
'N' for north or 'S' for south
'U' for up or 'D' for down
Min Max
00 99
01 12
01 31
0 23
0 59
0 59
0 90
0 59999
0 180
0 59999
000 999
-99999 +99999
0000 9999
0000 9999
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