Garmin GNS 480, Инструкция по установке

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Appendix B - Serial Interface Specifications
GNS 480 (CNX80) Installation Manual 560-0982-01 Rev L
Example Fuel / Airdata Input Data
<STX>SA223 223 knots indicated air speed
SB230 230 knots true air speed
SC101
0.101 mach
SD+3200 32,000 feet pressure altitude
SE+3312 33,120 feet density altitude
SF+05
+5°C outside air temp
SG-03 -3°C true air temp
SH010
wind direction at 10° (relative to true north)
SI015 wind speed at 15 knots
SJ+03 +3° / second right turn
SK-050
-50 feet / second vertical air speed
SL359 359° heading (relative to true north)
SM0123 12.3 gallons / hour - right engine fuel flow
SN0300
30.0 gallons used - right engine
SO0131 13.1 gallons / hour - left engine fuel flow
SP0310
31.0 gallons used - left engine
SQ000 no errors
SR01227 122.7 gallons remaining
S*123
Checksum (example only, not actual)
<ETX> end of message string
Figure B-2. Fuel/Air Data Input (S Format)
B.1.2.2 “Z” Data Format
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 GNS 480 uses is included in Table B-4.
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, followed
by the message data, a carriage return (CR = 0Dh), and a
line feed (LF = 0Ah) See the following table.
<checksum>............................................ the message checksum, same format as message
<ETX> .................................................... ASCII “end of text” character (ETX = 03h)