400W Series Installation Manual Page E-3190-00356-02 Rev. EE.6 Shadin Fuel/Air Data Computer SentenceThe Garmin 400W Series units are capable of receiving the following message strings from the ShadinFuel/Airdata or Airdata Computer:SHADIN “z” FORMATZA012 "ZA" (ASCII characters); "012" represents indicated Air Speed (knots)ZB345 "ZB" (ASCII characters); "345" represents true Air Speed (knots)ZC678 "ZC" (ASCII characters); "678" represents Mach Speed (thousandths)ZD<+/->9012 "ZD" (ASCII characters); sign; "9012" represents pressure altitude (tens of feet)ZE<+/->3456 "ZE" (ASCII characters); sign; "3456" represents density altitude (tens of feet)ZF<+/->78 "ZF" (ASCII characters); sign; "78" represents outside air temperature (Celsius)ZG<+/->90 "ZG" (ASCII characters); sign; "90" represents true air temperature (Celsius)ZH123 "ZH" (ASCII characters); "123" represents wind direction (degrees from north)ZI456 "ZI" (ASCII characters); "456" represents wind speed (knots)ZJ<+/->78 "ZJ" (ASCII characters); sign; "78" represents rate of turn (degrees per second)ZK<+/->901 "ZK" (ASCII characters); sign; "901" represents vertical speed (tens of ft/minute)ZL234 "ZL" (ASCII characters); "234" represents heading (degrees from north)ZM5678† "ZM" (ASCII characters); "5678" represents fuel flow, right (tenths gallons/hour)ZN90123† "ZN" (ASCII characters); "90123" represents fuel used, right (tenths gallons)ZO4567† "ZO" (ASCII characters); "4567" represents fuel flow, left (tenths gallons/hour)ZP89012† "ZP" (ASCII characters); "89012" represents fuel used, left (tenths gallons)ZQ345 "ZQ" (ASCII characters); "345" represents error log/reason indicatorZR678 "ZR" (ASCII characters); "678" represents checksumWhere: start-transmit character (0x02) carriage-return character (0x0d) line-feed character (0x0a)<+/-> sign indicator (0x2b["+"] or 0x2d["-"]) end-transmit character (0x03)† Not available from Airdata ComputerNote: Checksum is calculated by adding each byte in the message (including all characters from up to and including the error log/reason indicator), such that carries are discarded to give a one byteresult. The ASCII-coded decimal representation of that byte is given, ranging from 0 (0x30, 0x30, 0x30)to 255 (0x32, 0x35, 0x35).
