Avidyne AXP340 MODE S Manual

Pg Chg
Cover.. . 0
Page #.. 0
TOC-1.. 0
1…… 0
2……. 0
3……. 0
4……. 0
5….... 0
6…… 0
7…… 0
8.… 0
9…… 0
10…. 0
11….. 0
12….. 0
13….. 0
14….. 0
15….. 0
16….. 0
17….. 0
18….. 0
19….. 0
Index….0
Inside Back Cover 0
Outside Back Cove .0

2
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
Deleted: 3
Deleted: 4
Deleted: 5
Deleted: 5
Deleted: 5
Deleted: 5
Deleted: 5
Deleted: 5
Deleted: 6
Deleted: 6
Deleted: 7
Deleted: 8
Deleted: 8
Deleted: 9
Deleted: 9
Deleted: 9
Deleted: 10
Deleted: 10
Deleted: 11
Deleted: 13
Deleted: 14
Deleted: 14
Deleted: 14
Deleted: 15
Deleted: 15
Deleted: 16
Deleted: 16

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 GPS-
derived 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.

4
VFR
Pressing the VFR button sets the transponder to the pre-
programmed regional VFR code. Pressing the button again
restores the previous squawk code.
Pressing the VFR button while in Flight ID edit changes the Flight
ID to the pre-programmed ID set up during configuration of the
transponder.
FUNC
Pressing the FUNC button provides access to the flight timer,
stopwatch, Flight ID editing, ADS-B monitor (depending on
installation), altitude monitor and front panel dimming.

5
POWER ON/OFF
The AXP340 will automatically power on when avionics power is
applied and will display the Avidyne logo, product identification
and software version information while the unit is self-testing.
AXP340 Initialization Screen
Following a successful power-on self-test, the AXP340 will
transition to Standby mode (STBY) and present the squawk code
and Reported Altitude display page.
The AXP340 will automatically transition to ALT mode during
takeoff roll.
To manually power the AXP340 off, press and hold the MODE
button for at least 3 seconds. A countdown timer will be
displayed on the left side of the display and the unit will
completely power down upon reaching 0. To manually power the
AXP340 on following a manual power off, press and hold the
MODE button for approximately 1 second.
Manual Power Off Method

6
MODE CONTROL
The MODE button also controls the operation mode of the
transponder.
The following table shows the progression through the states:
ALT
The transponder will respond to all interrogations.
ON
The transponder will respond to all interrogations, but altitude
reporting is suppressed.
SBY
The transponder is on, but will not reply to any interrogations.
When airborne, the transponder should always be set to ALT
unless otherwise directed by Air Traffic Control. Aircraft
installations that include a gear squat switch will automatically
select GND on landing or while taxiing.
SQUAWK CODE ENTRY
Press any of the numeric buttons (0 through 7) to start modifying
the squawk code. A new squawk code is set when the fourth
digit is entered. If the code entry is not completed within 7
seconds, the changes are ignored and the previous code
restored.
Some standard squawk codes are listed below
1200
VFR code in the USA
7000
VFR code commonly used in Europe
7500
Hijack code
7600
Loss of communications
7700
Emergency code