190-01499-02 GTX 3X5 Transponder TSO Installation ManualRev. 4 Page 1-41.3 Definitions and AbbreviationsDefinitionsReferences made to GTX 3X5 apply to all GTX 3X5 models, except when noted.The term squitter refers to a burst or broadcast of aircraft-tracking data that is periodically transmittedby aMode S transponder without radar interrogation. The GTX 3X5 Mode S/ES models transmitADS-B Out ES. These transmissions contain additional aircraft information that includes GPS basedlocation information.AbbreviationsThese abbreviations and acronyms are used in this document.AC Advisory CircularADF Automatic Direction FinderADS-B Automatic Dependent Surveillance-BroadcastADS-R Automatic Dependent Surveillance-RebroadcastAFMS Aircraft Flight Manual SupplementAIRMET Airmen Meteorological InformationAPI Appliance Project IdentifierCDTI Cockpit Display of Traffic InformationATCRBS Air Traffic Control Radar Beacon SystemCFR Code of Federal RegulationsCG Center of GravityCONUS Continental United StatesCSA Conflict Situational AwarenessDC Direct CurrentDME Distance Measuring EquipmentEQF Environmental Qualification FormES Extended SquitterFAA Federal Aviation AdministrationFCC Federal Communications CommissionFCU Flight Control UnitFIS-B Flight Information Services-BroadcastFMS Flight Manual SupplementGAE Garmin Altitude EncoderGNSS Global Navigation Satellite SystemGPS Global Positioning SystemGTX Garmin TransponderHSDB High Speed Data BusLAT LatitudeLON LongitudeMCP Mode Control PanelMETAR Meteorological Aviation ReportMFD Multifunction DisplayMSR Message Success RateNOTAM Notice to AirmenNEXRAD Next Generation Radar
