Garmin GNS 530AW Installation Manual - page 147

500W Series Installation Manual  

Page E-5 

190-00357-02  

Rev. D 

E.6.3 

SHADIN “S” FORMAT 

SA012 

"SA" (ASCII characters); "012" represents indicated Air Speed (knots) 

SB345 

"SB" (ASCII characters); "345" represents true Air Speed (knots) 

SC678 

"SC" (ASCII characters); "678" represents Mach Speed (thousandths) 

SD<+/->9012 

"SD" (ASCII characters); sign; "9012" represents pressure altitude (tens of feet) 

SE<+/->3456 

"SE" (ASCII characters); sign; "3456" represents density altitude (tens of feet) 

SF<+/->78 

"SF" (ASCII characters); sign; "78" represents outside air temperature (Celsius) 

SG<+/->90 

"SG" (ASCII characters); sign; "90" represents true air temperature (Celsius) 

SH123 

"SH" (ASCII characters); "123" represents wind direction (degrees from north) 

SI456 

"SI" (ASCII characters); "456" represents wind speed (knots) 

SJ<+/->78 

"SJ" (ASCII characters); sign; "78" represents rate of turn (degrees per second) 

SK<+/->901 

"SK" (ASCII characters); sign; "901" represents vertical speed (tens of ft/minute) 

SL234 

"SL" (ASCII characters); "234" represents heading (degrees from north) 

SM5678 

"SM" (ASCII characters); "5678" represents fuel flow, right (tenths gallons/hour) 

SN90123 

"SN" (ASCII characters); "90123" represents fuel used, right (tenths gallons) 

SO4567 

"SO" (ASCII characters); "4567" represents fuel flow, left (tenths gallons/hour) 

SP89012 

"SP" (ASCII characters); "89012" represents fuel used, left (tenths gallons) 

SQ345 

"SQ" (ASCII characters); "345" represents error log/reason indicator 

SR67890 

"SR" (ASCII characters); "67890" represents fuel remaining (tenths gallons) 

SS123 

"SS" (ASCII character); "123" represents ground speed (knots) 

ST456LF> 

"ST" (ASCII character); "456" represents track (degrees) 

SU789012 

"SU" (ASCII character); "789012" represents distance to waypoint (hundredths nautical miles) 

SV345 

"SV" (ASCII character); “E” represents East, “W” represents West; "345" represents magnetic 

variation (tenths degrees) 

SW67 8901"SW" (ASCII character); “N” represents North, “S” represents South; "67 8910" represents current 

latitude (degrees, minutes, hundredths of minutes) 

SX234 5678"SX" (ASCII character); “E” represents East, “W” represents West; "234 5678" represents 

current longitude (degrees, minutes, hundredths of minutes) 

SY90 

"SY" (ASCII character); “L” represents Left, “R” represents Right; "90" represents drift angle 

(degrees) 

Sa<+/->1234 

"Sa" (ASCII character); sign; "1234" represents barometric corrected altitude (tens of feet) 

Sb56.78 

"Sb" (ASCII character); "56.78" represents current barometric pressure setting (inches Hg) 

S*901 

“S*” (ASCII character); "901" represents checksum 

Where:

  start-transmit character (0x02) 

carriage-return character (0x0d) 

line-feed character (0x0a) 

<+/-> 

sign indicator (0x2b["+"] or 0x2d["-"]) 

  end-transmit character (0x03) 

Note:  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 byte result.  The ASCII-coded 

decimal representation of that byte is given, ranging from 0 (0x30, 0x30, 0x30) to 255 (0x32, 0x35, 0x35).