Cockpit Reference Guide

190-00763-02 Rev. A
Garmin G1000 Pilot’s Guide for the Piper PA-46 Meridian
129
AUDIO PANEL AND CNS
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
4.4 GTX 33/33D MODE S TRANSPONDERS
TheGTX33ModeSTransponderandGTX33DDiversityModeSTransponderprovideModeA,ModeC,and
Mode S interrogation and reply capabilities. Diversityincorporatesantennasmountedonthetopandbottomof
the aircraft for dependable operation while maneuvering. Selective addressing or Mode Select (Mode S) capability
includes the following features:
•Level-2replydatalinkcapability(usedtoexchangeinformationbetweenaircraftandATCfacilities)
•Surveillanceidentiercapability
•FlightID(FlightIdentication)reporting–TheModeSTransponderreportsaircraftidenticationaseitherthe
aircraftregistrationorauniqueFlightID(conguredbythefactoryoradealer).
•Altitudereporting
•Airbornestatusdetermination
•Transpondercapabilityreporting
•ModeSEnhancedSurveillance(EHS)requirements
•Acquisitionsquitter–Acquisitionsquitter,orshortsquitter,isthetransponder24-bitidenticationaddress.
The transmission is sent periodically, regardless of the presence of interrogations. The purpose of acquisition
squitter is to enable Mode S ground stations and aircraft equipped with a Traffic Avoidance System (TAS) to
recognize the presence of Mode S-equipped aircraft for selective interrogation.
The Hazard Avoidance Section provides more details on traffic avoidance systems.
TRANSPONDER CONTROLS
TransponderfunctionisdisplayedonthreelevelsofsoftkeysonthePFD:Top-level,ModeSelection,and
Code Selection. When the top-level XPDR Softkey is selected, the Mode Selection softkeys appear: XPDR1,
XPDR2, STBY , ON , ALT , GND , VFR , CODE , IDENT , BACK .
When the CODE Softkey is selected, the number softkeys appear: 0 , 1, 2 , 3 , 4 , 5 , 6 , 7 , IDENT , BKSP,
BACK . The digits 8 and 9 are not used for code entry. Selecting the numbered softkeys in sequence enters
thetranspondercode.Ifanerrorismade,selectingthe BKSP Softkey moves the code selection cursor to the
previous digit. Selecting the BKSP Softkeyagainmovesthecursortothenextpreviousdigit.
Selecting the BACK Softkey during code selection reverts to the Mode Selection Softkeys. Selecting the BACK
Softkey during mode selection reverts to the top-level softkeys.
The code can also be entered with the FMSKnoboneitherPFD.Codeentrymustbecompletedwitheither
the softkeys or the FMS Knob, but not a combination of both.
Selecting the IDENT Softkey while in Mode or Code Selection initiates the ident function and reverts to the
top-level softkeys.
After 45 seconds of transponder control inactivity, the system reverts back to the top-level softkeys.