Garmin GDL 88, Руководство по установке

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Page B-2 GDL 88 TSO Installation Manual
Rev. A 190-01122-00
Appendix B GDL 88 DATA FORMAT
B.1 GDL 88 RS-232 Fuel/Air Data Input Format
B.1.1 Electrical Interface
The input signals are compatible with RS-232C. Data input at 9600 baud (1200 baud for Apollo Altitude
Encoder) with a word length of 8 bits, one stop bit, and no parity. One message is received per second.
B.1.2 Icarus Altitude Sentence
The GDL 88 is capable of receiving the following 10-byte message from the Icarus Altitude Serializer:
ALT <sp>12345<CR>
Where:
ALT ASCII characters
<sp> space (0x20)
12345 altitude in feet
<CR> carriage return (0x0d)
B.1.3 Apollo Altitude Sentence
The GDL 88 is capable of receiving the following 17-byte message from an Apollo Altitude Encoder:
#AL<sp><+/->ddul<CR>
Where:
#AL ASCII characters
<sp> space (0x20)
<+/->
sign indicator (0x2B[“+”] or 0x2D[“-“])
ddddd altitude in feet (-1000 feet to 35,000 feet)
T ASCII characters
<+/-> sign indicator
dd sensor temperature
ul
checksum of bytes 1 through 14 in hex ASCII (i.e. “FA”)
<CR> carriage return (0x0D)