Avidyne AXP340 Pilot's Manual
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AXP340 Mode S Transponder with ADS-B Out | PILOT GUIDE
TABLE OF CONTENTS
SYSTEM OVERVIEW ...................................................................... 1
FUNCTIONAL OVERVIEW ............................................................. 2
DISPLAY ......................................................................................... 3
BEZEL CONTROLS ........................................................................ 3
Selector Knob .......................................................................................... 3
Numeric Buttons ...................................................................................... 3
CLR ......................................................................................................... 3
IDENT ...................................................................................................... 3
VFR ......................................................................................................... 4
FUNC ...................................................................................................... 4
POWER ON/OFF............................................................................. 5
MODE CONTROL ........................................................................... 6
SQUAWK CODE ENTRY ................................................................ 6
ADDITIONAL FUNCTIONS ............................................................. 7
Flight Timer .............................................................................................. 7
Stopwatch ................................................................................................ 7
Flight ID entry .......................................................................................... 8
Altitude Monitor ........................................................................................ 8
ADS-B Monitor ......................................................................................... 9
BRIGHTNESS AND LIGHTING CONTROLS ................................ 11
ALERTS ......................................................................................... 12
Alert Messages ...................................................................................... 12
Fault Annunciation ................................................................................. 12
CONFIGURATION MODE ............................................................. 13
LOW TEMPERATURE OPERATION ............................................ 13
SOFTWARE UPDATES ................................................................ 14
PLUG AND PLAY DETAILS .......................................................... 14
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1
SYSTEM OVERVIEW
This manual assumes that the pilot is appropriately licensed, is
proficient in operation of the aircraft and its equipment, and is in
compliance with all Federal Aviation Regulations (FARs).
All images contained in this manual are for reference use only,
and are subject to change.
Avidyne strongly recommends that pilots use the AXP340 system
only under VFR conditions until completely familiar with its
operation and use.
Boxed areas marked as NOTE within this manual identify certain
situations or areas of operation having safety implications. While
it is important for the operator to be familiar with all of the
information in the manual, it is essential to the safe use of the
AXP340 that pilots give careful attention to the material contained
within these NOTEs.
AXP340 Mode S ADS-B Out Transponder
The AXP340 is a panel-mount Mode S transponder with support
for 1090 MHz Automatic Dependent Surveillance Broadcast
(ADS-B) Extended Squitter (ES), also known as “ADS-B Out” that
meets all the requirements for Mode S elementary surveillance
transponders for both IFD and VFR flight.
The AXP340 transmits up to 240 watts and responds to both
legacy Mode A/C interrogations and to Mode S interrogations
from both ground radar and airborne collision avoidance systems.
It transmits the required ADS-B Out signals including GPSderived position along with ground track, ground speed, and
altitude information.
2
FUNCTIONAL OVERVIEW
The Avidyne AXP340 Mode S ADS-B Transponder supports the
following functions:
Mode C transponder operations;
Mode S transponder operations;
ADS-B Out compliant;
Flight Timer;
Stopwatch;
Altitude Monitor;
Flight ID reporting.
COOL FEATURE
ADS-B Compliance
When combined with any of Avidyne’s TAS6X0A
ADS-B capable Traffic Advisory Systems, and an
ADS-B compliant GPS source and display (e.g.
Avidyne IFD540 or 440), the combined system will
meet the full 1090 MHz ADS-B compliant mandate.
AXP340 Transponder
Selector Knob
Clear
Ident
3
DISPLAY
The display shows the operating mode of the transponder, the
reported pressure altitude, and the current squawk code. The
reply indicator is active when the transponder replies to
interrogations and the IDENT indicator is active when the bezel
IDENT button is pressed.
The reported altitude is displayed as a Flight Level, which is the
pressure altitude in hundreds of feet. When non-standard
atmospheric conditions apply, this may not match the altimeter
indicated altitude, but will be correctly displayed by the ATC
radar.
BEZEL CONTROLS
SELECTOR KNOB
The selector knob on the right side of the front panel is used to
select data such as characters for Flight ID or move through the
menu options. Pressing the selector knob confirms the selection
or selection of the options presented. A label on the right side of
the display describes the action when the selector knob is
pressed.
NUMERIC BUTTONS
The numeric buttons are used to select a new Squawk code or
flight ID numbers. Pressing buttons 0 through 7 will immediately
edit the current squawk code unless in flight ID edit.
CLR
Press the CLR button to return to original settings or back space
through partially complete data entry or reverse through a menu.
IDENT
Press the IDENT button when ATC instructs you to “Ident” or
“Squawk Ident”. This activates the ident pulse in the transponder
for 18 seconds. “IDENT” will appear in the display.
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