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