Avidyne AXP340 Installation Manual
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Avidyne AXP340 Installation Manual

Avidyne AXP340 Installation Manual

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AXP340 MODE S TRANSPONDER
INSTALLATION MANUAL

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Summary of Contents for Avidyne AXP340

  • Page 1 AXP340 MODE S TRANSPONDER INSTALLATION MANUAL...

  • Page 2: Revision History

    All materials copyrighted, including images that represent this software. Copyright 2013-2020 Trig Avionics Limited. Parts of this document Copyright 2013-2020 Avidyne Corporation. All rights reserved. The latest installation manuals are available to authorized dealers on the web at www.avidyne.com. Document Number 600-00308-000 Control Category...

  • Page 3: Table Of Contents

    AXP340 Transponder Installation Manual CONTENTS GENERAL INFORMATION ......................8 .......................... 8 PPLICABILITY ....................... 9 ECHNICAL PECIFICATION TSO I ......................... 10 NFORMATION ................10 NVIRONMENTAL UALIFICATION ORMS STC A ....................10 PPROVED ODEL ....................10 VIDYNE UPPLIED ATERIAL 1.6.1 Product Ship Kits ......................10 1.6.2...
  • Page 4 AXP340 Transponder Installation Manual ......................20 LECTRICAL ONDING ......................20 EIGHT AND ALANCE ....................... 20 OMPASS ISTANCE ....................20 NSTALLATION EMOVAL SYSTEM INSTALLATION ......................21 – P ....................21 RIMARY NTERFACE INOUT ................... 22 ECONDARY NTERFACE INOUT ......................23 UNCTION UMMARY ......................
  • Page 5 AXP340 Transponder Installation Manual 7.5.6 Squat Switch Source ....................... 31 7.5.7 Approved ADS-B GPS Input Selection Settings .............. 32 7.5.8 GPS Line Speed ......................33 7.5.9 System Certification Level ....................33 7.5.10 GPS NAC ........................34 7.5.11 Aircraft Length and Width ....................34 7.5.12...
  • Page 6 AXP340 Transponder Installation Manual 14.2 .................... 58 ENERAL ERVICE ROCEDURES STC PERMISSION ........................59 AVIDYNE EXCLUSIVE LIMITED WARRANTY AND LIMITATIONS ON LIABILITY60 SOFTWARE LICENSE ......................62 600-00308-000 Page 6 Revision: 05...
  • Page 7 AXP340 Transponder Installation Manual This page intentionally left blank 600-00308-000 Page 7 Revision: 05...

  • Page 8: General Information

    This manual describes the physical and electrical characteristics and the installation requirements for an AXP340 Mode S Transponder. The AXP340 Mode S panel mount transponder is an ED-73E and DO-181E Class 1 compliant Mode S level 2es datalink transponder, with support for extended squitter, elementary surveillance and SI codes.

  • Page 9: Technical Specification

    AXP340 Transponder Installation Manual 1.2 Technical Specification The following section gives mechanical and electrical characteristics for the AXP340: Specification Characteristics Compliance ETSO C112d, TSO C112d; Class 1 Level 2es ETSO C166b, TSO C166b; Class B1S FCC Identification VZI01155 Applicable documents...

  • Page 10: Tso Information

    1.4 Environmental Qualification Forms The environmental qualification for theAXP340 is listed in Section 8. Note: If the AXP340 has been exposed to extreme cold temperature prior start, it may take a warm up period to achieve standard performance. 1.5 STC Approved Model List The aircraft listed on the Approved Model List STC are eligible to install the AXP340.

  • Page 11: Installation Considerations

    The minimum items needed for the AXP340 installation is an Altitude Source and transponder antenna. The ADS-B output is an optional feature on the AXP340. If installing this option, the AXP340 must also be connected to an approved GPS Receiver and Weight-on-wheels output.

  • Page 12: Transponder Antenna

    AXP340, reference Table 2. 3.3 Antenna Cable The AXP340 is designed to meet Class 1 requirements with an allowance of 2 dB for loss in the connectors and cable used to connect it to the antenna. Excessive loss will degrade both transmitter output power and receiver sensitivity.
  • Page 13 AXP340 Transponder Installation Manual Once the cable run length is known, a cable type with low enough loss per metre that meets the above requirements can be chosen. Longer runs require lower loss cable. NOTE: Low loss cable typically uses foamed or cellular dielectrics and foil screens. These make such cables especially prone to damage from too-tight bends or from momentary kinking during installation.

  • Page 14: Antenna - Bnc Connector

    AXP340 Transponder Installation Manual 3.4 Antenna - BNC Connector This section describes the technique for attaching the antenna cable to the supplied blind-mate BNC connector. If a low-loss cable is needed that has too large a dielectric diameter to fit the supplied blind-mate BNC connector, a short length (up to 150mm or 6 inches) of smaller cable may be used with suitable mating connectors to adapt to the transponder connector.

  • Page 15: Tray / Bnc Connector Assembly

    AXP340 Transponder Installation Manual Figure 3: Coaxial Cable Outer Shield • Slide heat shrink tubing forward (flush to connector) and heat to shrink the tubing. Figure 4: Coaxial Cable Heat Shrink Tube Complete the assembly by installing the bushing over the center contact, •...
  • Page 16 AXP340 Transponder Installation Manual When the BNC is prepared (Item 4), feed it through the AXP340 mounting tray and attach the washer combination in the following order: Wave Washer 00239-00 Plain washer Circlip washer The Circlip washer should be fitted with a set of Circlip pliers.

  • Page 17: Electrical Installation

    All wires and wire bundles must be routed and secured in such a way to eliminate risk of mechanical damage and minimize exposure to heat and fluids. 4.4 Wire Harness Overbraid Copper overbraid is typically not required on the AXP340 wire harness. However, in the following cases, copper overbraid is required. 4.4.1 Existing Equipment If interfacing to any existing avionics equipment with copper overbraid over the wire harness, it must be installed on all new wiring to that existing piece of equipment.

  • Page 18: Electrical Load Analysis

    Prior to installing the AXP340, an electrical load analysis (ELA) must be performed. The aircraft’s electrical load should be less than 80% of the total generator output following the AXP340 installation, reference Table 2 for AXP340 power requirements. Also reference FAA AC 43.13-2B Paragraph 208 for more information on performing an aircraft electrical load analysis.

  • Page 19: Mechanical Installation

    The APX340 tray is designed to be installed on the backside of the instrument panel. The instrument panel requires a rectangular hole in the instrument panel for the AXP340 unit to slide through, reference Section 11. If the instrument panel in the aircraft is considered primary structure, additional installation approval will be required for the instrument panel cutout.

  • Page 20: Cooling Requirements

    Attention should however be given to the incorporation of cooling provisions to limit the maximum operating temperature of each unit when the AXP340 is installed in a typical panel or rack. The reliability of equipment operating in close proximity in a rack can be degraded if adequate cooling is not provided.

  • Page 21: System Installation

    In simple installations it is possible to omit wiring for the second connector altogether. The Molex edge connector used in the AXP340 is similar to the connector used on the KT76A, KT76C and KT78A transponders, and the common signals on the primary connector use the same contact positions and are electrically compatible.

  • Page 22: Secondary Interface - Pinout

    AXP340 Transponder Installation Manual Figure 7: Primary Connector 6.2 Secondary Interface - Pinout Signal Direction Ground Reserved GPS Position In Input Reserved Audio Mute In Input Altitude Alert Output Ground Audio + Output Audio - Output Reserved Reserved Reserved Table 9: Secondary Pinout...

  • Page 23: Function Summary

    AXP340 Transponder Installation Manual 6.3 Function Summary At the rear, the transponder has two Molex style connectors and a single antenna connector for blind mating with the corresponding connectors in the mounting tray. The interfaces provide the following services: Type...

  • Page 24: Transponder Interface Details

    The Suppress I/O on contact 4 is an ARINC compatible suppression bus interface, which acts as both an input and an output. The AXP340 will assert this signal when it is transmitting, and can be suppressed by other equipment that asserts the signal. The AXP340 will drive approximately 24 Volts on the output (independently of supply voltage), and will treat the input as active whenever the bus has greater than 10 Volts.

  • Page 25: Altitude Inputs And Output

    RS-232, special care must be taken to ensure that the serial altitude output is NOT providing altitude to the IFD. Due to the priority schemes listed below, this can cause an altitude loop (the AXP340 will continually report field elevation regardless of altitude). The serial output supplies RS232 output levels, and runs at 9600 bps, no parity.

  • Page 26: Ident Switch Input

    AXP340 ADS-B option. 6.6.2 Multiple GPS Receivers The AXP340 should not be interfaced to multiple GPS position sources for the -B output and is outside the scope of this STC. If switching GPS sources for the ADS-B output is desired, the following requirements must be accomplished per FAA AC 20-165( ): •...

  • Page 27: Mixed Transmitter/Receiver Installations

    AXP340 Transponder Installation Manual 6.6.3 Mixed Transmitter/Receiver Installations The AXP340 can be installed with any ADS-B receive equipment (ADS-B In), but cannot be installed with any other ADS-B transmitter(s). For instance, do not install a AXP340 transponder with a UAT ADS-B out in the same the aircraft.

  • Page 28: Squat Switch Input

    Collective switch for Part 27/29 aircraft (Note: additional approval required) • The AXP340 will Auto-switch from Ground Mode to Air Mode if a GPS source and Air Data source with altitude and airspeed is connected to the transponder, reference Section 6.5.4.

  • Page 29: Post Installation Configuration And Checkout

    Verify wiring is properly installed and secured. Verify the wiring does not interfere with the flight controls. Verify all wiring connected to AXP340 is connected correctly to the unit. Caution: Failure to properly connect aircraft wiring to the AXP340 may result in damage to the AXP340 or to the equipment connected to the AXP340.

  • Page 30: Aircraft Registration

    These addresses are usually written as a 6 digit hexadecimal number, although you may also encounter one written as an 8 digit octal number. The AXP340 only understands the hexadecimal format, so you must first convert an octal number to hexadecimal.

  • Page 31: Aircraft Category

    AXP340 Transponder Installation Manual 7.5.5 Aircraft Category To assist ATC tracking of aircraft, an aircraft category can be transmitted by Mode S transponders. Using the selector knob, choose the aircraft category that most closely matches the aircraft in which the transponder is installed.

  • Page 32: Approved Ads-B Gps Input Selection Settings

    The Air-Ground Logic in the table above is based on the Input Type. For example, if the aircraft is on the ground and the Input Type is low (less than 10 ohms to aircraft ground), then the AXP340 should be configured for a "Low when ground"...

  • Page 33: Gps Line Speed

    B, the SDA would indicate that the system has been qualified commensurate with a Major failure condition (level C). Use the lowest letter of the system (i.e. GPS receiver and AXP340 transponder). If the ADS-B system is integrated with a non-compliant GPS, the SDA must be set to "not certified".

  • Page 34: Gps Nacv

    On the ground, ADS-B transmits encoded aircraft size information which is used by ATC to identify taxiing routes and potential conflicts. When configured for ADS-B, the AXP340 will ask for the aircraft length and width (wingspan), in metres, and will calculate the appropriate size code for transmission.

  • Page 35: Ads-B Receiver Options

    Press selector knob to move to the next menu item. 7.5.16 Lighting Control The AXP340 has an integrated ambient light sensor in addition to an external input connection from the aircraft lighting bus (if available). This configuration setting selects the way in which the integrated light sensor and the lighting bus input control the brightness of the LCD and the bezel.

  • Page 36: Lcd Dim Point

    When utilizing the pseudo weight on wheels derived from the IFD5XX/IFD4XX/Atlas/Helios either the squat must be changed to “Low when airborne “on the AXP340, or the controlling IFD should be turned off to allow the transponder to be manually switched to ALT mode.

  • Page 37: Ads-B Check

    Table 19: ADS-B Parameters If the AXP340 transponder is connected to an approved GPS receiver listed in Table 11, a flight test of the ADS-B systems is not required. If using a GPS receiver not listed in Table 11, the ADS-B out system must be installed via field approval, reference Section 10.

  • Page 38: Interface Check

    AXP340 Transponder Installation Manual 7.8 Interface Check In AXP340 Setup the Interface Check screen displays the current state of the external IDENT, external STANDBY and external GROUND inputs. Exercise these inputs to confirm the correct behavior. 7.9 Electromagnetic Interference/Compatibility Check The EMI/EMC check verifies that all of the electronic systems installed on the aircraft are compatible.

  • Page 39: Environmental Qualification Form

    AXP340 Transponder Installation Manual 8. Environmental Qualification Form ‡ Also applicable to Avidyne 200-00247-XXX units. Nomenclature AXP340 Mode S Transponder ‡ Part Number: 01155-00-(XX) ETSO: C112d, C166b Manufacturer Trig Avionics Limited Address Heriot Watt Research Park, Riccarton, Currie, Scotland, EH14 4AP...
  • Page 40 AXP340 Transponder Installation Manual Lightning direct effects 23.0 Equipment identified as Category X – no test required Icing 24.0 Equipment identified as Category X – no test required Electrostatic Discharge 25.0 Equipment tested to Category A Flammability 26.0 Equipment tested to Category C...

  • Page 41: Ads-B Compliance

    DO-260B with corrigendum 1. The AXP340 is a B1S ADS-B transmitter. 9.1 ADS-B Parameters Supported The following table lists the ADS-B parameters that are transmitted by the AXP340 transponder when connected to an appropriate GPS receiver. Parameter...

  • Page 42: Ads-B Field Approval Support

    AXP340 Transponder Installation Manual 10. ADS-B Field Approval Support The following information is given for field approval of the AXP340 transponder. The AXP340 transponder can be installed using field approval per FAA Policy Memorandum dated October 10, 2012, see Section 13. The following tables are provided to assist installers in obtaining field approval. This process is helpful in approving an ADS-B out installation on aircraft not listed in the Approved Model List for the STC or aircraft using a GPS receiver not listed in Table 11.
  • Page 43 Table 20: FAA Policy Memorandum FAA AC 20-165( ) Compliance Method Notes Complete Installation Guidance The AXP340 has been tested. The Section 3-1 a: environmental categories are listed in Environmental Section 8. Verify the installation does Qualification not violate the AXP340 environmental test categories.
  • Page 44 The AXP340 can be configured for Section 3-2 c(3): ADS-B both 1090 ADS-B IN and UAT ADS-B IN capability IN, reference Section 7.5.13. The AXP340 can be configured for the Section 3-2 c(4): Emitter aircraft's emitter category, reference category 7.5.5.
  • Page 45 AXP340 Transponder Installation Manual FAA AC 20-165( ) Compliance Method Notes Complete Installation Guidance The AXP340 must not be connected to  Section 3-3 b(4) Position two position sources, reference Section source selection 6.6.2. Section 3-3 b(5) Position The AXP340 does not contain an ...
  • Page 46 Section 3-7 c (4): Mode the AXP340 bezel. This is a single 3/A code point of entry for Mode A code. The AXP340 is a single point of entry  Section 3-7 c (5): Single for Mode A, IDENT, and emergency point of entry status.
  • Page 47 Test the AXP340 per Section 7.4 testing Section 4-1 g: ICAO 24- Test the AXP340 per Section 7.7. bit address The AXP340 does not have a pilot  Section 4-1 h: Self test initiated self test function. The 600-00308-000 Page 47...
  • Page 48 Section 4-1 k: Transmit Verify the AXP340 transmit power, Power reference Section 7.4. The AXP340 does not support TCAS II  Section 4-1 l: TCAS output. Section 4-1 m: Test the transponder per 14 CFR 43...

  • Page 49: Additional Ads-B Information

    ADS-B message. The AXP340 will suppress the ground track at velocities less than 7 knots. • The AXP340 will always limit the NIC value to not greater than 8. The NAC value is set using HFOM data from the GPS •...

  • Page 50: Installation Drawings

    AXP340 Transponder Installation Manual 11. Installation Drawings dimensions in millimetres 600-00308-000 Page 50 Revision: 05...
  • Page 51 AXP340 Transponder Installation Manual dimensions in inches 600-00308-000 Page 51 Revision: 05...

  • Page 52: Basic Interconnect Diagram

    AXP340 Transponder Installation Manual 12. Basic Interconnect Diagram NOTES: Ground 18 – 22 AWG LL WIRES SHOULD BE Lighting 14V Lighting 28V POSITION NLY CONNECT ONE ALTITUDE DATA SOURCE EITHER A SERIAL MUTUAL SUPPRESSION BUS Suppress I/O SOURCE ADC. Squat Switch...
  • Page 53 AXP340 Transponder Installation Manual GPS RECEIVER AXP340 Primary SQUAT SWITCH IN W.O.W. OUTPUT Pitot AXP340 (Shown in Air) Airspeed Switch Primary SQUAT SWITCH IN NOTES: 1. ALL WIRES TO BE 22 AWG OR GREATER UNLESS Static OTHERWISE NOTED. 2. HARNESS OVERBRAID IS NOT SHOWN BUT MAY BE REQUIRED.
  • Page 54 AXP340 Transponder Installation Manual RECEIVER AXP340 SECONDARY RS232 GPS OUT RS232 GPS IN NOTES: 1. ALL WIRES TO BE 22 AWG OR GREATER UNLESS OTHERWISE NOTED. 2. THE IFD5XX AND RELEASE 9 IFDs MUST BE WAAS GPS RECEIVERS, REFERENCE TABLE 11.

  • Page 55: Faa Policy Memorandum

    AXP340 Transponder Installation Manual 13. FAA Policy Memorandum 600-00308-000 Page 55 Revision: 05...
  • Page 56 AXP340 Transponder Installation Manual 600-00308-000 Page 56 Revision: 05...
  • Page 57 AXP340 Transponder Installation Manual 600-00308-000 Page 57 Revision: 05...

  • Page 58: Factory Service Policies And Procedures

    AOG Support: 877-900-4AOG (4264) 14.2 General Service Procedures Repair of the AXP340 are performed at authorized Part 145 service centers and the Avidyne factory. Prior to returning a unit for service, contact Avidyne at 1-888-723-7592 to obtain a Return Merchandise Authorization (RMA) number.

  • Page 59: Stc Permission

    Avidyne Corporation hereby grants to all National Aviation Authorities (FAA, CAA, JAA, etc) approved installers the use of data from STC SA00352BO to install the Avidyne AXP340 System. This also includes any international validations of the STC (e.g. EASA, ANAC, etc). Copies of the STC data are available on the Avidyne website Technical Publications page or upon request.

  • Page 60: Avidyne Exclusive Limited Warranty And Limitations On Liability

    The Product is returned to Avidyne or to an Avidyne authorized service facility; c) The Product has not been altered in any manner other than as previously authorized by Avidyne in writing; d) Repairs to the Product have not been made by anyone other than Avidyne or an Avidyne authorized service facility.
  • Page 61 AFFILIATES) EXPRESSLY DISCLAIM ANY AND ALL REPRESENTATIONS, AFFIRMATIONS AND/OR WARRANTIES REGARDING OR RELATED TO ANY SUCH PRODUCTS. IN NO EVENT WILL AVIDYNE (OR ITS AFFILIATES) BE RESPONSIBLE OR LIABLE FOR ANY DAMAGE OF ANY NATURE WHATSOEVER, INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL,...

  • Page 62: Software License

    License and Certain Restrictions You may use the Software on the AXP340 on which it was delivered. You may not copy the Software for any purpose. You may not transfer the Software or any rights under this Agreement to another party without this Agreement.
  • Page 63 If you do not agree to the terms of this license, Avidyne is unwilling to license the product to you. In such event, you may not use or copy the product, and you should promptly contact Avidyne for instructions on return of the unused product(s) for a refund.

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