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G3X/G3X Touch Installation Manual - RS-232 Text Output Format
Rev. AC
Page B-2
B.4 Attitude/Air Data Message Format
The Attitude/Air Data message is transmitted approximately 10 times per second.
Table B-1 Attitude/Air Data Message Format
Field Name
Offset
Width
Units
Notes
Min
Max
Escape character
0
1
'='
Sentence ID
1
1
'1'
Sentence version
2
1
Currently '1'
UTC hour
3
2
hours
00
23
UTC minute
5
2
minutes
00
59
UTC second
7
2
seconds
00
59
UTC second fraction
9
2
10 ms
00
99
Pitch
11
4
0.1 degree
positive = up
-900
+900
Roll
15
5
0.1 degree
positive = right
-1800
+1800
Heading
20
3
1 degree
magnetic
000
359
Airspeed
23
4
0.1 knots
0000
9999
Pressure altitude
27
6
1 foot
-01000
+60000
Rate of turn
33
4
0.1 degree/
sec
positive = right
-999
+999
Lateral acceleration
37
3
0.01 G
positive = leftward
-99
+99
Vertical acceleration
40
3
0.1 G
positive = upward
-99
+99
AOA (Angle of Attack)
43
2
00 = AOA below
minimum calibrated
value
60 = AOA at calibrated
warning threshold value
99 = AOA at or above
calibrated stall value
Min = 00, Max = 99
0
+99
Vertical speed
45
4
10 fpm
positive = up
-999
+999
Outside air
temperature
49
3
1 degree C
-99
+99
Altimeter setting
52
3
0.01 inHg
offset from 27.50"
000
400
Checksum
55
2
ASCII hex
sum of all previous
bytes
CR/LF
57
2
0x0D / 0x0A
Total length
59