Garmin G1000H Marine Radio User Manual


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190-01255-00 Rev. B
Garmin G1000H
™
Pilot’s Guide for the Bell 407GX
117
AUDIO PANEL AND CNS
4.4 GTX 33 MODE S TRANSPONDER
TheGTX33ModeSTransponderprovidesModeA,ModeC,andMode S interrogation and reply capabilities.
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.
•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.
•Extendedsquitter–TransmitstheAutomaticDependentSurveillance-Broadcast(ADS-B)position,velocity,and
heading information periodically without requiring an 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 pressed, the Mode Selection softkeys appear:
STBY
,
ON
,
ALT
, GND,
VFR
,
CODE
,
IDENT
,
BACK
.
When the
CODE
Softkey is pressed, 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. Pressing the numbered softkeys in sequence enters the
transpondercode.Ifanerrorismade,thecodeselectioncursorcanbemovedbacktotheleftonedigitwith
each press of the
BKSP
Softkey.
Pressing the
BACK
Softkey during code selection reverts to the Mode Selection Softkeys. Pressing the
BACK
Softkey during mode selection reverts to the top-level softkeys.
The code can also be entered with the FMSKnobonthePFD.Codeentrymustbecompletedwitheitherthe
softkeys or the FMS Knob, but not a combination of both.
Pressing 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softkeyinactivity,thesystemrevertsbacktothetop-levelsoftkeys.
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