Figure 20 Fuel / Airdata - Garmin Apollo GX50 GPS Installation Manual

Serial Interface Specifications
Example Fuel / Airdata Input Data
<STX>SA223
SB230
SC101
SD+3200
SE+3312
SF+05
SG-03
SH010
SI015
SJ+03
SK-050
SL359
SM0123
SN0300
SO0131
SP0310
SQ000
SR01227
S*123
<ETX>
Figure 20 Fuel / Airdata Data Input (S Format)
"Z" D F
ATA ORMAT
The format of the fuel/air data computer input is as follows, which conforms to the Shadin
"Z" format serial message. Definition of the input message data that the GX50/60/65 uses is
included in Table 13.
Baud rate: ..........................................9600
Data bits: ...........................................8
Stop bits: ...........................................1
Parity: ................................................none
Expected input rate: ..........................approx. 1 second
Message length: ................................variable (512 character max.)
The serial input message string is expected in the following format.
<STX><message><message> ... <message><chksum><ETX>
<STX> ...............................................ASCII "start of text" character (STX = 02h)
<message> .........................................starts with an ASCII "Z", then an ID character,
<checksum>.......................................the message checksum, same format as message
<ETX> ...............................................ASCII "end of text" character (ETX = 03h)
70
223 knots indicated air speed
230 knots true air speed
0.101 mach
32,000 feet pressure altitude
33,120 feet density altitude
+5°C outside air temp
-3°C true air temp
wind direction at 10° (relative to true north)
wind speed at 15 knots
+3° / second right turn
-50 feet / second vertical air speed
359° heading (relative to true north)
12.3 gallons / hour - right engine fuel flow
30.0 gallons used - right engine
13.1 gallons / hour - left engine fuel flow
31.0 gallons used - left engine
no errors
122.7 gallons remaining
Checksum (example only, not actual)
end of message string
followed by the message data, a carriage return (CR
= 0Dh), and a line feed (LF = 0Ah) See the
following table.
Apollo GX50/60/65 Installation Manual