Attitude/Air Data Message Format - Garmin G3X Installation Manual

I.4

Attitude/Air Data Message Format

The Attitude/Air Data message is transmitted approximately 10 times per second.
Field Name
Escape character
Sentence ID
Sentence version
UTC hour
UTC minute
UTC second
UTC second fraction
Pitch
Roll
Heading
Airspeed
Pressure altitude
Rate of turn
Lateral acceleration
Vertical acceleration
AOA (Angle of Attack)
Vertical speed
Outside air
temperature
Altimeter setting
Checksum
CR/LF
Total length
G3X Installation Manual - RS-232 Text Output Format
Page I-2
Table I-1 Attitude/Air Data Message Format
Offset Width Units
0 1
1 1
2 1
3 2 hours
5 2 minutes
7 2 seconds
9 2 10 ms
11 4 0.1 degree
15 5 0.1 degree
20 3 1 degree
23 4 0.1 knots
27 6 1 foot
0.1 degree/
33 4
sec
37 3 0.01 G
40 3 0.1 G
43 2
45 4 10 fpm
49 3 1 degree C
52 3 0.01 inHg
55 2 ASCII hex
57 2
59
Notes
'='
'1'
Currently '1'
positive = up
positive = right
magnetic
positive = right
positive = leftward
positive = upward
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
positive = up
offset from 27.50"
sum of all previous
bytes
0x0D / 0x0A
Min Max
00 23
00 59
00 59
00 99
-900 +900
-1800 +1800
000 359
0000 9999
-01000 +60000
-999 +999
-99 +99
-99 +99
0 +99
-999 +999
-99 +99
000 400
190-01115-01
Rev. L