Garmin GTX 330 User Manual

GTX 330/330D Installation Manual 190-00207-02
Page 5-26 Rev. U
5.2.24 ARINC 743A
AUTOMATIC 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 the
Garmin GTX 330 Mode S transponder actually provides the required output. Make sure the interfacing
equipment outputs the correct parameter to the GTX 330 to meet Mode S EHS. See the vendor’s
Table 5-28 Received Labels and Data from ARINC 743A
Label Data
103 Track Angle (degrees)
110 Latitude (degrees)
111 Longitude (degrees)
112 Ground Speed (knots)
120 Latitude Fine
121 Longitude Fine
130 Horizontal Protection Level (feet)
133 Vertical Protection Level (feet)
136 Vertical Figure of Merit (feet)
140 UTC Fine
141 UTC Fine Fraction
150 UTC
165 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 Status
370 Height above Ellipsoid (feet)
Table 5-29 Received Labels and Data from AFCS
Label Data
102 Selected Altitude (feet)
234 Barometric Setting (hPa)
235 Barometric Setting (“Hg)
271 AFCS Pitch Discretes

Garmin GTX 330 Specifications

General

Reply Frequencies	1090 MHz
Frequency Range	1090 MHz (reply)
Power Output	200 Watts peak
Dimensions	5.7 x 1.6 x 7.5 inches (145 x 41 x 191 mm)
Temperature Range	-20°C to +55°C
Operating Voltage	11-33 VDC