GTX 330/330D Installation Manual 190-00207-02Page 5-26 Rev. U5.2.24 ARINC 743AAUTOMATIC FLIGHT CONTROL SYSTEM (AFCS)5.3 Enhanced Surveillance (EHS)The following table shows equipment connections required to meet Mode S Enhanced Surveillance (EHS)criteria. Included are a list of parameters to other on-board avionics equipment formats that are accepted.The Req’d field denotes which formats are needed to make the GTX 330 system Mode S EHS capable.It is the responsibility of the installing agency to determine whether the equipment that interfaces with theGarmin GTX 330 Mode S transponder actually provides the required output. Make sure the interfacingequipment outputs the correct parameter to the GTX 330 to meet Mode S EHS. See the vendor’sTable 5-28 Received Labels and Data from ARINC 743ALabel Data103 Track Angle (degrees)110 Latitude (degrees)111 Longitude (degrees)112 Ground Speed (knots)120 Latitude Fine121 Longitude Fine130 Horizontal Protection Level (feet)133 Vertical Protection Level (feet)136 Vertical Figure of Merit (feet)140 UTC Fine141 UTC Fine Fraction150 UTC165 GPS Vertical Velocity (feet per minute)166 N/S Velocity (knots)174 E/W Velocity (knots)247 Horizontal Figure of Merit (feet)273 GNSS Sensor Status370 Height above Ellipsoid (feet)Table 5-29 Received Labels and Data from AFCSLabel Data102 Selected Altitude (feet)234 Barometric Setting (hPa)235 Barometric Setting (“Hg)271 AFCS Pitch Discretes
