Garmin 010-00860-00 Installationshandbuch - Seite 40
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B.1.5 Shadin Fuel/Air Data Computer
The GDL 88 is capable of receiving the following message strings from the Shadin Fuel/Air Data or Air
Data Computer:
SHADIN "z" FORMAT
<STX>
ZA012<CR><LF>
ZB345<CR><LF>
ZC678<CR><LF>
ZD<+/->9012<CR><LF>
ZE<+/->3456<CR><LF>
ZF<+/->78<CR><LF>
ZG<+/->90<CR><LF>
ZH123<CR><LF>
ZI456<CR><LF>
ZJ<+/->78<CR><LF>
ZK<+/->901<CR><LF>
ZL234<CR><LF>
ZM5678<CR><LF>†
ZN90123<CR><LF>†
ZO4567<CR><LF>†
ZP89012<CR><LF>†
ZQ345<CR><LF>
ZR678<CR><LF>
<ETX>
Where:
<STX>
start-transmit character (0x02)
<CR>
carriage-return character (0x0d)
<LF>
line-feed character (0x0a)
<+/->
sign indicator (0x2b["+"] or 0x2d["-"])
<ETX>
end-transmit character (0x03)
† Not available from Air Data Computer
Note: Checksum is calculated by adding each byte in the message (including all characters from <STX>
up to and including the error log/reason indicator), such that carries are discarded to give a one byte
result. The ASCII-coded decimal representation of that byte is given, ranging from 0 (0x30, 0x30, 0x30)
to 255 (0x32, 0x35, 0x35).
Page B-4
Rev. A
"ZA" (ASCII characters); "012" represents indicated Air Speed (knots)
"ZB" (ASCII characters); "345" represents true Air Speed (knots)
"ZC" (ASCII characters); "678" represents Mach Speed (thousandths)
"ZD" (ASCII characters); sign; "9012" represents pressure altitude (tens of
feet)
"ZE" (ASCII characters); sign; "3456" represents density altitude (tens of feet)
"ZF" (ASCII characters); sign; "78" represents outside air temperature
(Celsius)
"ZG" (ASCII characters); sign; "90" represents true air temperature (Celsius)
"ZH" (ASCII characters); "123" represents wind direction (degrees from north)
"ZI" (ASCII characters); "456" represents wind speed (knots)
"ZJ" (ASCII characters); sign; "78" represents rate of turn (degrees per second)
"ZK" (ASCII characters); sign; "901" represents vertical speed (tens of
ft/minute)
"ZL" (ASCII characters); "234" represents heading (degrees from north)
"ZM" (ASCII characters); "5678" represents fuel flow, right (tenths
gallons/hour)
"ZN" (ASCII characters); "90123" represents fuel used, right (tenths gallons)
"ZO" (ASCII characters); "4567" represents fuel flow, left (tenths gallons/hour)
"ZP" (ASCII characters); "89012" represents fuel used, left (tenths gallons)
"ZQ" (ASCII characters); "345" represents error log/reason indicator
"ZR" (ASCII characters); "678" represents checksum
GDL 88 TSO Installation Manual
190-01122-00