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GTX 320/320A TRANSPONDER INSTALLATION MANUAL

1. P102 GTX 320 L g P3271 GTX 320A or Blind Encoder SEE NOTE 1 18 gt D4 3 lt gt Al 5 P A2 6 lt A4 9 lt gt BI 11 gt B2 12 gt B4 0 lt gt 4 gt C2 7 gt C4 dap A TRANSPONDER 2 COMMON 16 lt ed SEE NOTE 2 TRANSPONDER 1 gt POWER INPUT p SEE NOTE 1 NOTES 4 1 THE GTX 320 320A CONTAINS INTERNAL ALTITUDE CODE LINE i ISOLATION DIODES EXISTING INSTALLATIONS WITH DIODES 9 5 lt INSTALLED IN THE WIRE HARNESS BE USED AS IS on MON WITHOUT REMOVING THE DIODES 11 lt gt 12 NONE 2 FOR ENCODER POWER INPUT USE DIODES OF AT LEAST 3 AMP 50 VOLTS REVERSE RATING 10 4 lt m 7 lt b PET pa 14 16 P102 GTX 320 P3271 GTX 320A Figure B5 GTX 320 320A DUAL TRANSPONDER INTERCONNECT WIRING DIAGRAM GTX 320 320A Installation Manual 190 00133 01 Page 33 Page 34 blank Rev L 1072 2100 061 Tenuen WOTE 0TE XLO TA 9c Bed cc Bea ONIMVHG AT8IN3SSV H3 Ld VOV NOLLYTIVISNI 091 LV OOHVN 98 einBr4 Figure 7 KING KT 76A 78A ADAPTER ASSEMBLY DRAWING GTX 320 320A Installation Manual Page 37 Page 38 blank 190 00133 01 Rev L APPENDIX STC PERMISSION Consistent with 8110 69 or Order 8110 4 Aviation Authority approved installations are hereby granted permission to use STC SA00642W d
2. 2 3 3 Installation Approval Considerations for Pressurized Aircraft Antenna and cable installations on pressurized cabin aircraft require FAA approved installation design and engineering substantiation data whenever such installations incorporate alteration penetration of the cabin pressure vessel by connector holes and or mounting arrangements For needed engineering support pertaining to the design and approval of such pressurized aircraft antenna Installations it is recommended that the installer proceed according to any of the following listed alternatives 1 Obtain approved antenna installation design data from the aircraft manufacturer 2 Obtain an FAA approved Supplemental Type Certificate STC pertaining to and valid for the subject antenna installation 3 Contact the FAA Aircraft Certification Office in the appropriate Region and request identification of FAA Designated Engineering Representatives DERs who are authorized to prepare and approve the required antenna installation engineering data 4 Obtain FAA Advisory Circular AC 183C and select and contact a DER from the roster of individuals identified there under Contact an aviation industry organization such as the Aircraft Electronics Association and request their assistance Page 6 GTX 320 320A Installation Manual Rev L 190 00133 01 2 3 4 Antenna Cable Installation When routing antenna cables observe the following precautions All cable routin
3. GTX 320A 17 lt SEE NOTE 5 CONNECTIONS ARE TO BE 24 AWG OR LARGE EXTERNAL STANDBY 16 SEE NOTE 6 u _ 4 ROUTE THE ANTENNA CABLE AS FAR AS PRACTICAL FROM ANY EATERNAE IDEN 8 T SEE NOTE 7 HARNESS BUNDLE IN NO CASE SHOULD THE ANTENNA CABLE BE LACED INTO A HARNESS BUNDLE NOT USED 19 N C Not Used on the GTX 320A NOT USED 20 gt N C Not Used on the GTX 320A 5 EXT SUPPRESSION 102 17 TWO WAY POSITIVE GOING n SUPPRESSION PULSES NOT USED 21 gt Not Used on the GTX 320A NOT USED 22 gt Not used on the GTX 320A EXT SBY P102 16 WHEN TIED TO GROUND WILL PLACE THAT UNIT IN STANDBY MODE 2 DO NOT CONNECT DO NOT CONNECT 7 MOMENTARY CONNECTION OF EXT IDENT P102 8 TO GROUND WILL CAUSE THE GTX 320 320A TO TRANSMIT IDENT PULSE P103 SEE NOTE 9 8 ALTITUDE ENCODER RETURN CAN BE GROUNDED AT EITHER xPDR P102 13 OR P102 25 ARTENA ANTENNA 9 MAXIMUM ATTENUATION IN THE COAX MUST NOT EXCEED 1 5dB AT 1090 MHz Figure B4 GTX 320 320A INTERCONNECT WIRING DIAGRAM GTX 320 320A Installation Manual Page 31 Page 32 blank 190 00133 01 Rev L ALTITUDE 04 ALTITUDE A1 ALTITUDE 2 ALTITUDE A4 ALTITUDE B1 ALTITUDE B2 ALTITUDE B4 ALTITUDE C1 ALTITUDE C2 ALTITUDE C4 SWITCHED POWER OUTPU EXTERNAL STANDBY ALTITUDE D4 ALTITUDE A1 ALTITUDE A2 ALTITUDE A4 ALTITUDE B1 ALTITUDE B2 ALTITUDE B4 ALTITUDE C1 ALTITUDE C2 ALTITUDE C4 SWITCHED POWER OUTPUT EXTERNAL STANDBY
4. Select ON or ALT as late as practical prior to takeoff and to OFF or SBY as soon as practical after completing landing roll unless the change to SBY has been accomplished previously at the request of ATC e TST Turning the switch to the TST position tests the reply indicator The TST position is spring loaded and must be held momentarily When released it will automatically return to the ALT position 3 2 2 Code Selection The code selector consists of four eight position switches that provide 4 096 active identification codes Attention should be paid to the selected identification code The selected code should be the one assigned by air traffic control for IFR flight or rules applicable to transponder use for VFR flight When making routine code changes you should avoid inadvertent selection of codes 7500 7600 or 7700 thereby causing momentary false alarms at automated ground facilities For example when switching from code 2700 to code 7200 switch first to 2200 then 7200 NOT to 7700 and then 7200 This procedure applies to nondiscrete code 7500 and all discrete codes in the 7600 and 7700 series 1 7600 7677 7700 7777 which trigger special indicators in automated facilities Only nondiscrete code 7500 will be decoded as the hijack code An aircraft s transponder code when available is utilized to enhance the tracking capabilities of the ATC facility therefore you should not turn the transponder to SBY when making routine
5. 6 CHECK EXISTING COAX AND ANTENNA 12 2 7 INSTALLATION USING EXISTING NARCO AT 150 INSTALLATION RACK 12 2 8 INSTALLATION USING EXISTING BENDIX KING 76A 78A INSTALLATION 13 3 POST INSTALLATION CONFIGURATION amp CHECKOUT PROCEDURE 14 3 1 AIRCRAFT STATION LICENSING REQUIREMENTS enne nnne 14 3 2 OPERATION tonat euet m RUE nemen det 14 3 2 1 Function Selection Switches ener enne ennt enne enne nnns 15 3 22 22 Code Select OM eee 15 3 2 35 ADENT Buttons tease sta gan slots a esata eee d aon ela 16 3 24 acutos Leni iaia e pinos ete 16 GTX 320 320A Installation Manual 190 00133 01 PAGE APPENDIX A CERTIFICATION DOCUMENTS n nn 17 A CONTINUED AIRWORTHINESS ata ish ia o 17 A 2 ENVIRONMENTAL QUALIFICATION FORM GTX 320 aa aaa sss 20 ENVIRONMENTAL QUALIFICATION FORM GTX 320A i 22 APPENDIX B ASSEMBLY AND INSTALLATION DRAWINGS i 24 APPENDIX C STC PERMISSION GTX 320 ili 39 LIST OF ILLUSTRATIONS FIGURE PAGE 251 DB 25 PinzO t Definitions en oec met tete iet v o ERI d ce Bae hd Sia Sek ake ETE eet da sa adult 11 3 1 Transponder Front Panel aa
6. Appendix F Paragraph c 1 when using portable test equipment GTX 320 320A Installation Manual Page 3 190 00133 01 Rev L 1 8 LIMITED WARRANTY GARMIN warrants this product to be free from defects in materials and manufacture for one year from the date of purchase GARMIN will at its sole option repair or replace any components that fail in normal use Such repairs or replacement will be made at no charge to the customer for parts or labor The customer is however responsible for any transportation costs This warranty does not cover failures due to abuse misuse accident or unauthorized alteration or repairs THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUTORY OR OTHERWISE THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT SOME STATES DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU To obtain warranty service call the GARMIN Customer Service department 913 397 8200 for a returned merchandise tracking number The unit should be securely packa
7. GARMIN GTX 320 Maintenance Manual P N 190 00133 02 GARMIN GTX 320A Maintenance Manual P N 190 00133 08 GARMIN STC applicable STC number for the specific model installed refer to Appendix B of this manual GARMIN GTX 320 320A Pilot s Guide P N 190 00133 09 Distribution This document should be a permanent aircraft record 2 Description of the Alteration Installation of the GARMIN GTX 320 320A with interface to Encoding Altimeter or Blind Encoder Refer to section 2 4 and Appendix B of this manual for interconnect information Antenna installation removal and replacement should be in accordance with applicable provisions of AC43 13 1B and 43 13 2A GTX 320 320A Installation Manual Page 17 190 00133 01 Rev L 10 11 12 13 14 15 Control Operation Information Refer to the GTX 320 320A Pilot s Guide Servicing Information N A Maintenance Instructions Maintenance of the GTX 320 320A is on condition only Periodic maintenance is not required Refer to the GTX 320 and the 320A Series Maintenance Manuals Troubleshooting Information Refer to the GTX 320 and the GTX 320A Maintenance Manuals Removal and Replacement Information Refer to section 2 4 of this manual If the unit is removed and reinstalled a functional check of the equipment should be conducted in accordance with section 3 2 of this manual Diagrams Refer to Appendix B of this manual Special Inspection Requirements N A Applica
8. as aoa ana Sus sawa 14 GTX 320 320A Outline Drawing ie 25 B2 GTX 320 320A Connector Rack Kit Assembly Drawing esses 27 GTX 320 320A Recommended Panel Cutout Dimensions a 29 B4 GTX 320 320A Interconnect Wiring Diagram i 31 B5 Dual Transponder Interconnect Wiring Diagram i 33 NARCO AT 150 Installation Adapter Assembly Drawing ii 35 B7 KING KT 76A 78A Installation Adapter Assembly Drawing iii 37 Page 11 GTX 320 320A Installation Manual Rev L 190 00133 01 1 GENERAL DESCRIPTION 1 1 INTRODUCTION This manual provides the installation and operating instructions for the GARMIN GTX 320 and the GTX 320A Transponders Information pertaining to the maintenance alignment and procurement of replacement parts is found in the GTX 320 Maintenance Manual P N 190 00133 02 and the GTX 320A Maintenance Manual P N 190 00133 08 After installation of the GTX 320 GTX 320A FAA Form 337 must be completed by an appropriately certificated agency and ATC transponder tests required by 14 CFR Part 91 413 must be completed to return the aircraft to service 1 2 EQUIPMENT DESCRIPTION The GARMIN GTX 320 320A Transponder is a radio transmitter and receiver that operates on radar frequencies Receiving ground radar interrogations at 1030 MHz it transmits a coded response of pulses to ground based radar on a frequenc
9. the 3 32 Allen wrench counterclockwise until it disengages from the rack Page 12 Rev L GTX 320 320A Installation Manual 190 00133 01 2 8 INSTALLATION USING EXISTING BENDIX KING KT 76A 78A INSTALLATION RACK The GTX 320 and GTX 320A can be used with an existing Bendix King KT 76A 78A installation rack by using the KT 76A 78A Installation Adapter P N 011 00289 00 See figure B7 for the Bendix King KT 76A 78A Adapter assembly drawing GTX 320 units that are at Mod Level 1 must use the Mod Level 1 Bendix King KT 76A 78A Installation Adapter After Mod Level 1 the GTX 320 sits 0 17 4 3 mm closer to the instrument panel Also when installing the GTX 320 in an existing Bendix King KT 76A 78A rack using the KT 76A 78A Adapter and when the aircraft has a bus voltage of 28 VDC make sure the 28 VDC dropping resistor is bypassed A Attach the KT 76A 78A installation adapter to the rear of the GTX 320 using the two captive screws on the adapter B Looking at the bottom of the transponder make sure the front lobe of the locking mechanism is in a vertical position This can be accomplished by using a 3 32 Allen wrench through the face plate C Slide the unit into the rack until the front lobe of the unit touches the rack Guide pins on the back plate will help in the proper alignment of the unit in the rack D Turn the Allen wrench clockwise until unit is secured in the rack Continue turning until tight Do not overtighte
10. the installation rack to the antenna must not exceed 1 5 dB at 1090 MHz The antenna must not have corrosion damage or loose connections INSTALLATION USING EXISTING NARCO AT 150 INSTALLATION RACK The GTX 320 and GTX 320A can be used with an existing NARCO AT 150 Installation Rack by using the NARCO AT 150 Installation Adapter P N 011 00292 00 See figure B6 for the NARCO AT 150 Adapter assembly drawing GTX 320 units that are at Mod Level 1 must use the Mod Level 1 NARCO Installation Adapter After Mod Level 1 the GTX 320 sits 0 17 4 3 mm closer to the instrument panel Also when installing the GTX 320 in an existing NARCO AT 150 rack using the AT 150 Adapter and when the aircraft has a bus voltage of 28 VDC make sure the 28 VDC dropping resistor is bypassed Slide the adapter into the rack installation until the jackscrew mates with its nut Turn the jack screw with a 3 32 Allen wrench until the adapter is secure Looking at the bottom of the transponder make sure the front lobe of the locking mechanism 5 vertical position This can be accomplished by using a 3 32 Allen wrench through the face plate Slide the unit into the rack until the front lobe of the unit touches the rack Guide pins on the back plate will help properly align the unit in the rack Turn the Allen wrench clockwise until unit is secured in the rack Continue turning until tight Do not overtighten the screw To remove the unit from the rack turn
11. GTX 320 320A TRANSPONDER INSTALLATION MANUAL GTX 320 K IDENT 4 GTX 320 Shown yi GARMIN GARMIN International Inc 1200 E 151 Street Olathe KS 66062 USA 190 00133 01 Revision L June 2001 Copyright 1999 2002 GARMIN Ltd or its subsidiaries All Rights Reserved Except as expressly provided herein no part of this manual may be reproduced copied transmitted disseminated downloaded or stored in any storage medium for any purpose without the express prior written consent of GARMIN GARMIN hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited Information in this document is subject to change without notice GARMIN reserves the right to change improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements GARMIN International Inc 1200 E 151 Street Olathe KS 66062 USA Telephone 913 397 8200 Dealer Line 1 800 800 1420 Web Site Address www garmin com INFORMATION SUBJECT
12. Office Title Any altaretian ef this certificate is punishable by a fine of not exceeding 1 009 or imprisonment not exceeding 3 years or both FAA FORM 8210 2 10 68 PAGE 1 t 2 PAGES Cs certificate may be transferred in accordance with FAR 21 47 Page 40 GTX 320 320A Installation Manual Rev L 190 00133 01
13. R 1 Figure B2 GTX 320 320A CONNECTOR RACK KIT ASSEMBLY DRAWING GTX 320 320A Installation Manual 190 00133 01 Page 27 Page 28 blank Rev L Figure B3 GTX 320 320A RECOMMENDED PANEL CUTOUT DIMENSIONS GTX 320 320A Installation Manual Page 29 Page 30 blank 190 00133 01 Rev L Bendix King Bendix King Terra 102 GTX 320 130 346 3000 coder G Encode P3271 GTX 320A P1 PI PI ALTITUDE D4 18 lt 1 D4 ALTITUDE A1 3 2 B 2 A1 ALTITUDE A2 5 3 3 A2 ALTITUDE A4 6 4 M 4 A4 ALTITUDE B1 9 lt 5 N 5 B ALTITUDE 82 11 lt 9 9 B2 ALTITUDE B4 12 10 D 10 B4 ALTITUDE C1 10 lt 11 L 11 C1 ALTITUDE C2 4 lt 15 U 13 C2 ALTITUDE C4 7 12 12 C4 SEE NOTE 8 6 R 6 COMMON XPDR CIRCUIT BREAKER AIRCRAFT POWER 11 TO 33 VDC 15 11 33 VDC AIRCRAFT POWER NOTE 3 GROUND 13 NOTES SEE NOTE 3 GROUND 25 A 3LE CUR IN ST I I 2 CONNECTOR TERMINAL NUMBER IS SPECIFIED ON CONNECTOR SWITCHED POWER OUTPUT 14 gt SEE NOTES 1 amp 3 POWER AND GROUND CONNECTIONS SHOULD BE MADE WITH 20 AWG 28V LIGHTING 23 lt 5 WIRE EXCEPT IN CASES WHERE THE LEAD LENGTH IS IN EXCESS av LIGHTING gt gt TO PANEL DIMMING BUSS OF 10 FEET 3 m IN WHICH CASE THE CONNECTIONS SHOULD BE M I MADE WITH 18 AWG WIRE OVERSIZE CONTACTS IN THE CONNECTOR KIT ARE FOR USE WITH 19 AWG WIRE WHEN REQUIRED ALL OTHER EXT SUPPRESSION SUPPRESS 1 0
14. TO EXPORT CONTROL LAWS This document may contain information which is subject to the Export Administration Regulations EAR issued by the United States Department of Commerce 15 CFR Chapter VII Subchapter and which may not be exported released or disclosed to foreign nationals inside or outside of the United States without first obtaining an export license A violation of the EAR may be subject to a penalty of up to 10 years imprisonment and a fine of up to US 1 000 000 under Section 2410 of the Export Administration Act of 1979 Include this notice with any reproduced portion of this document RECORD OF REVISIONS Date A 009 B 053097 Clarity Antenna Requirements 7096 D 062197 Depth BehindPani 759 E 09 18 97 Wiring Diagram Corrections mn 01 23 98 Add Spring Washer 830 _ 06 05 98 Correct reference to 50 ohm match bushing 8808 H 05 14 99 Updates and Corrections 10985 _ K 11 05 01 Updates and Clarifications 169 _ EIE GTX 320 320A Installation Manual Rev L 190 00133 01 TABLE OF CONTENTS PARAGRAPH PAGE T 2GBENERATDDESCRIPTION 3 5 tenete egeo et ter ye aliena 1 It patibolo An siena basi kak kh miae st 1 12 EQUIPMENT DESCRIPTION e es ua ahus ee ret ete uku qaraqa 1 1 3 TECHNICAL SPECIFICATIONS an agi acit ete uie fa oque tens 1 L 3 1 Transponder Speci
15. TX320A Airborne ATC Transponder Equipment Type Model Part No 010 00247 TSO C74c Class 1A Includes 011 00728 Manufacturer s Specification And Or Other Applicable Specification 004 00111 00 Manufacturer GARMIN Corporation Address 1200 E 151st St Olathe Kansas 66062 Conditions RTCA DO 160D Description of Conducted Tests Section Temperature and Altitude 4 0 Equipment tested to Categories Al amp D1 Low Temperature 4 5 1 High Temperature 4 5 2 amp 4 5 3 In Flight Loss of Cooling 4 5 4 Cooling Air Not Required Altitude 4 6 1 Decompression 4 6 2 Overpressure 4 6 3 Equipment tested to Category Humidiy _______ 60 Equipment tested to Category A Equipment tested to Category B Vibration Equipment tested in each aircraft type to aircraft zone 2 Aircraft Type 2 and 6 were tested to Category S2 Vibration level B2 Aircraft Type 3 4 and 5 were tested to Category S Vibration level M Note Vibration level M modified to increase level to RTCA DO 160C Curve N for Helicopters as follows 0 1 inches peak to peak double amplitude from 5 Hz to 17 Hz 1 5 g Pk from 17 Hz to 500 Hz Waterprootness 100 Equipment identified as Category X no test required Fluids Susceptibility L0 Equipment identified as Category X no test required Sandand Dust 120 Equipment identified as Category X no test required iso Equipment identified as Category X no test required Page 22 GT
16. X 320 320A Installation Manual Rev L 190 00133 01 Description of Conducted Tests RTCA DO 160D Section 140 150 16 0 Equipment identified as Category X no test required Equipment tested to Class Z Equipment tested to Category A Voltage Spike 17 0 Audio Frequency 18 0 Susceptibility Induced Signal 19 0 Equipment tested to Category A Susceptibility Equipment tested to Category A Equipment tested to Category B Radio Frequency 20 0 Equipment tested for conducted susceptibility to Susceptibility Category T radiated susceptibility to Category T and pulse test to Category T Equipment tested to Category B Equipment tested to Category M up to 2 GHz Radio Frequency Emission 21 0 Lightning Induced 22 0 Transient Susceptibility Lightning Direct Effects 23 0 Electrostatic Discharge Equipment identified as Category X no test required Equipment identified as Category XXXX no test required Equipment identified as Category X no test required N AR Equipment identified as Category X no test required Remarks None GTX 320 320A Installation Manual Page 23 190 00133 01 Rev L APPENDIX B ASSEMBLY AND INSTALLATION DRAWINGS B 1 GENERAL This section contains the following installation drawings BI GTX 320 320A Outline Drawing e B2 GTX 320 320A Connector Rack Kit Assembly Drawing e B3 GTX 320 320A Recommended Panel Cutout Dimensions e B4 GTX 320 320A Interconnect Wiring Diag
17. ace plate D Slide the unit into the rack until the front lobe of the unit touches the rack Guide pins on the back plate will help in the proper alignment of the unit in the rack E Turn the Allen wrench clockwise until unit is secured in the rack Continue turning until tight Do not overtighten the screw F To remove the unit from the rack turn the 3 32 Allen wrench counterclockwise until it disengages from the rack GTX 320 320A Installation Manual Page 9 190 00133 01 Rev L 25 ELECTRICAL CONNECTIONS All electrical connections except for the antenna are made through a single 25 pin D subminiature connector Figure 2 1 defines the electrical characteristics of all input and output signals and identifies the cable requirements for each signal Required connector and associated hardware are supplied in the installation kit P N 010 10160 00 See figures B4 and B5 for interconnect wiring diagrams Larger pins are supplied for the connector to provide power and ground at pins 13 14 15 and 25 when required Refer to Figure B4 Note 3 Pin Contact Part Numbers Wire Gauge GARMIN P N Military P N AMP Positronic ITT Cannon Recommended Crimp Tools 18 AWG 20 24 AWG Hand Crimping Positioner Insertion Tool Extraction Tool Extraction Tool M22520 2 01 Insertion extraction tools from ITT Cannon are all plastic others are plastic with metal tip 2 Non GARMIN part numbers shown are not maintained by GARMIN
18. and consequently are subject to change without notice 3 Alternate contacts for 18 AWG wire As an alternative to the Positronic contacts listed and provided in the installation kit the installer may use contacts made by ITT Cannon under P N 031 1007 001 These contacts require the use of a different crimp tool positioner than shown in the table with the part numbers as follows Daniels P N K250 Astro P N 616245 or ITT Cannon P N 980 0005 722 4 All wires must be passed through the backshell before being assembled to connector 5 Inaircraft equipped with a dropping resistor for 28 VDC buss voltage make sure the dropping resistor is bypassed Page 10 GTX 320 320A Installation Manual Rev L 190 00133 01 21 13 0O um o O X O O O x 14 25 D E E 5 9 2 n 2 7 5 Figure 2 1 DB 25 Pin Out Definitions 2 GTX 320 320A Installation Manual Page 11 190 00133 01 Rev L 2 6 CHECK EXISTING COAX AND ANTENNA BEFORE USING GTX 320 320A ADAPTER IN AN EXISTING INSTALLATION 2 7 CAUTION Before using a Narco or Bendix King Adapter to install a GTX 320 320A into an existing installation the RF coaxial cable its connectors and the antenna must be checked to ensure the following There must be no corrosion or damage on the coax or its RF connectors that would adversely affect operation The RF attenuation of the coax from
19. ata to modify aircraft GTX 320 320A Installation Manual Page 39 190 00133 01 Rev L United States of America Mepartment of Transportation Medera Afiatim Administration Supplemental Type Certificate PM lt SAD0642WIT GARMIN International 1200 East 151st Street Olathe KS 66062 cw y na thet Mo Argo in the igra dasan for the following prodiuel wih the Canitations and condsticna Moryor ad socii reat Aercon meti tha wimoonthiness repuiemeants off Pene 3 of the Civil Air Propertations spinal Product Dono Contificato Nienka 2A3 m Mooney M207 installation of GARMIN GTX 320 in accordance with GARMIN Master Document List MDL Number 005 00060 00 Revision G Dated April 2 1998 or later FAA Approved Revision Fimitatioas and Conditions Compatibility of this design change with previously approved modifications must be determined by the installer If the holder agrees to permit another person ta use this certificate to alter the product the holder shall give the other person written evidence of that permission despierta Jeyranded revoked or a tamination dats ds othampese estati by the of the Zea e botation Aniniinzioa of rrt ond November 20 1995 hale mnes Beats of cisemnce April 02 1998 Plata amanda gt efireotian off the ea aret nm PA s DE Signature Jose R Flores Senior Electrical Avionics Engineer Wichita Aircraft Certification
20. code changes GTX 320 320A Installation Manual Page 15 190 00133 01 Rev L Important Codes e 1200 The VFR Code for any altitude 7600 Loss of Communications e 7500 Hijack Never assigned by ATC without prior notification of the pilot that his or her aircraft is subject to unlawful interference 7700 Emergency 7177 Military Interceptor Operations Never squawk this code 0000 Military use Never squawk this code See the Aeronautical Information Manual AIM for a detailed explanation of identification codes 3 2 3 IDENT Button On occasion the controller will request SQUAWK IDENT Respond by momentarily pressing and releasing the IDENT button Pressing the IDENT button activates the Special Position Identification Pulse SPI for approximately 20 seconds identifying your transponder return from other aircraft on the controller s scope 3 2 4 Reply Light The reply light will blink each time the transponder replies to ground interrogation The reply light also remains lit during the IDENT time interval Page 16 GTX 320 320A Installation Manual Rev L 190 00133 01 APPENDIX CERTIFICATION DOCUMENTS A 1 Continued Airworthiness Other than for regulatory periodic functional checks maintenance of the GTX 320 320A is condition only Refer to the GTX 320 and GTX 320A Maintenance Manuals Periodic maintenance of the GTX 320 320A is not required This section provides assis
21. ed it introduces less than 1 5 dB attenuation at 1 GHz including the connector Connector item 6 P N 330 00198 00 requires the cable to be terminated directly to it and can accommodate only M17 128 RG 400 cable The completed cable including connectors must introduce no more than 1 5 dB attenuation at 1 GHz Instructions for installing the item 6 are shown below steps A G GTX 320 320A Installation Manual 190 00133 01 Page 7 Rev L STRIP DIMENSIONS CAP oS Fa n pm 50 12 7 pum 0 25 6 4 AUD MEE 50 OHM MATCH BUSHING 3 1 u 5j SNC BLINDMATE FERRULE Trim coax outer insulation back 0 50 Trim braid not center conductor or insulation back 0 25 Strip Insulation back 0 120 Place the ferrule over the coax braid flush against the coax outer insulation before performing the next step if the outside diameter of the coax braid is smaller than the inside diameter of the center connector sidewall opening Insert cable center conductor dielectric and shield braid through the sidewall of the connector and solder the center conductor to the center pin of the connector When using low loss cable it may be necessary to flatten the solid wire center conductor slightly so it can fit the slot on the RF connector center pin When soldering avoid applying excess heat to the connector body and center conductor insulator Heat the outside of the connector sleeve and at the same time apply so
22. ety Equipment tested without shock mounts to 7 3 Vibration Categories B M and N Table 8 1 Explosion Equipment identified as Category X no test required Waterproofness 10 0 Equipment identified as Category X no test required Fluids Susceptibility 11 0 Equipment identified as Category X no test required Page 20 GTX 320 320A Installation Manual Rev L 190 00133 01 Conditions RTCA DO 160C Description of Conducted Tests Section Sand and Dust 12 0 Equipment identified as Category X no test required Fungus 13 0 Equipment identified as Category X no test required Salt Spray 14 0 Equipment identified as Category X no test required Magnetic Effect Equipment tested to Class Z Power Input Equipment tested to Category B Voltage Spike Equipment tested to Category Audio Frequency 18 0 Equipment tested to Category B Susceptibility Induced Signal Equipment tested to Category Susceptibility 19 0 0 Radio Frequency Emission Equipment tested to Category Z Lightning Induce Transient 22 0 Equipment identified as Category XXXX no test Susceptibility required Lightning Direct Effects 23 0 Equipment identified as Category X no test required Icing 24 0 Equipment identified as Category X no test required 9 Radio Frequency 20 Equipment tested to Category U Susceptibility 3 4 GTX 320 320A Installation Manual Page 21 190 00133 01 Rev L ENVIRONMENTAL QUALIFICATION FORM Nomenclature G
23. fications ilaria nebbia la rei 1 1 3 2 Physical Characteristics GTX 3207 aane i uuu aaa enne E 2 1 3 3 Physical Characteristics GTX 320A 2 14 EQUIPMENT AVAILABLE nte tiic et adm ade ica siano kusayuk as yu 2 1 4 1 Configurations Available ii 2 1 4 2 Installation E ERR Ue E oe FERE oa Le kn 3 1 5 ADDITIONAL EQUIPMENT REQUIRED enne trennen rentrer nnne nns 3 1 6 INSTALLATION APPROVAL ii 3 1 7 ATC TRANSPONDER TESTS AND INSPECTIONS trennen enne nnns 4 138 LIMITED WARBANTY eee iate eo teet e ee E 4 2 JINSDALDATION zinc neta eer ai ence eee ten eh aera ote een 5 2 INTRODUCTIONS Pd mee NOE EA 5 2 2 UNPACKING AND INSPECTING EQUIPMENT eene ener enne nennen nns 5 2 3 ANTENNAINSTALIEATION fiera ec eet de cd petet reet 5 2 31 Location Considerations niin eee eto HEN usu hasil auqa sapa aa 5 2 3 2 Antenna Installation ui 5 2 3 3 Installation Approval Considerations for Pressurized Aircraft ii 6 2 3 4 Antenna Cable Installation e 7 2 3 5 Antenna Cable Connectors E a a i Ea e nnne 7 320 320A INSTALLATION asn tette aasan 9 25 ELECTRICAL CONNECTIONS ical il nein ee nels anita i 10 2
24. g should be kept as short as possible and as direct as possible Avoid sharp bends Avoid routing cables near power sources e g 400 Hz generators trim motors etc or near power for fluorescent lighting Avoid routing cable near ADF antenna cable allow at least a 12 inch separation The table below lists the recommended 50 ohm double shielded coax antenna cable vendor and the type to be used for specific lengths of cable Adherence to this table will ensure that the coax installation will not exceed the maximum allowable 1 5 dB attenuation at the transmitter operating frequency of 1090 MHz Max Length feet ECS Type MIL C 17 Type RG Type 8 8 M17 128 RG400 10 0 3C142B 12 5 M17 112 RG304 17 0 311601 M17 127 RG393 21 0 311501 27 0 311201 41 0 310801 Supplier Information Vendor Electronic Cable Specialists 5300 W Franklin Drive Franklin WI 53132 MIL C 17 types See current issue of Qualified Products List QPL 17 RG types See current issue of Qualified Products List QPL 17 Tel 800 327 9473 414 421 5300 Fax 414 421 5301 2 3 5 Antenna Cable Connectors One of two rack connectors is provided item 6 or 12 in the installation drawing figure B2 RF Adapter item 12 P N 330 00326 00 requires the cable to be terminated to an appropriate type BNC plug provided by installer which is then attached to item 12 Any 50 ohm double shielded cable may be used provid
25. ged with the tracking number clearly marked on the outside of the package and sent freight prepaid and insured toa GARMIN warranty service station A copy of the original sales receipt is required as the proof of purchase for warranty repairs GARMIN retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY Page 4 GTX 320 320A Installation Manual Rev L 190 00133 01 2 INSTALLATION 2 1 INTRODUCTION This section provides the necessary Information for installing the GTX 320 320A Transponders and where required optional accessories Installation of the GTX 320 320A will differ according to equipment location and other factors Cabling will be fabricated by the installing agency to fit these various requirements This section contains interconnect diagrams mounting dimensions and information pertaining to installation Each installation shall be accomplished to meet the requirements of FAA AC 43 13 2A 2 2 UNPACKING AND INSPECTING EQUIPMENT Carefully unpack the equipment and make a visual inspection of the unit for evidence of damage incurred during shipment If the unit is damaged notify the carrier and file a claim To justify a claim save the original shipping container and all packing materials Do not return the unit to GARMIN until the carrier has authorized the claim Retai
26. lder between the braid and the sleeve Continue to apply heat until the solder flows evenly Install 50 Matching Bushing Insert connector cap and tack solder in two places Page 8 Rev L GTX 320 320A Installation Manual 190 00133 01 2 4 GTX 320 320A INSTALLATION Avoid installing the unit near heat sources If this is not possible ensure that additional cooling is provided Allow adequate space for installation of cables and connectors The installer will supply and fabricate all ofthe cables All wiring must be in accordance with FAA AC 43 13 2A GTX 320 units that are at Mod Level 1 must use the Mod Level 1 Rack Assembly After Mod Level 1 GTX 320 installations are 0 170 4 31 mm deeper in the panel A Assemble the connector rack kit according to figure B2 Install the rack assembly according to the dimensions given in figures BI Mounting brackets are not supplied due to the wide range of mounting configurations available Suitable mounting brackets may be fabricated from sheet metal or angle stock To ensure a sturdy mount rear support for the unit should be provided B Do not insert screws through the rear plate of the mounting tray into the transponder These holes are only for use with the adapter described in paragraph 2 8 C Looking at the bottom of the transponder make sure the front lobe of the locking mechanism is in a vertical position This can be accomplished by using a 3 32 Allen wrench through the f
27. n the original shipping containers for storage If the original containers are not available a separate cardboard container should be prepared that is large enough to accommodate sufficient packing material to prevent movement 23 ANTENNA INSTALLATION 2 3 1 Location Considerations A The antenna GARMIN P N 010 10160 00 should be well removed from any major protrusions the engine s propeller s and antenna masts It should also be as far removed as practical from landing gear doors access doors or other openings that could alter its radiation pattern B The antenna should be mounted on the underside of the aircraft and in a vertical position when the aircraft is in level flight C Avoid mounting the antenna within three feet of the ADF sense antenna or any other communication antenna and six feet from the DME antenna D To prevent RF interference the antenna must be physically mounted a minimum distance of three feet from the GTX 320 320A If the antenna is being installed on a composite aircraft ground planes must sometimes be added Conductive wire mesh radials or thin aluminum sheets embedded in the composite material provide the proper ground plane allowing the antenna pattern gain to be maximized for optimum transponder performance 2 3 2 Antenna Installation Install the antenna according to the antenna manufacturer s instructions and FAA 43 13 2A GTX 320 3204 Installation Manual Page 5 190 00133 01 RevL
28. n the screw E To remove the unit from the rack turn the 3 32 Allen wrench counterclockwise until it disengages from the rack GTX 320 320A Installation Manual Page 13 190 00133 01 Rev L 3 POST INSTALLATION CONFIGURATION amp CHECKOUT PROCEDURE 3 1 AIRCRAFT STATION LICENSING REQUIREMENTS The Telecommunications Act of 1996 effective February 8 1996 provides the FCC discretion to eliminate radio station license requirements for aircraft and ships At the present time you do not need an individual license to operate the GTX 320 320A aboard your private aircraft in many circumstances To find out the specific details on whether you are exempt from licensing please see FCC Fact Sheet PR 5000 or contact the FCC at 800 322 1117 If an aircraft license is required or desired contact the FCC at 800 322 1117 to request form 404 Application for Aircraft Radio Station License The FCC also has a fax on demand service to provide forms by fax at 202 418 0177 The GTX 320 320A owner accepts all responsibility for obtaining the proper licensing before using the transponder OPERATION The coverage you can expect from the GTX 320 320A is limited to line of sight Low altitude or aircraft antenna shielding by the aircraft itself may result in reduced range Range can be improved by climbing to a higher altitude It may be possible to minimize antenna shielding by locating the antenna where dead spots are only noticed during abno
29. onnector backshells Weight Unit Only 1 7 Ibs 0 8 kg Weight Installed with rack and 2 3 Ibs 1 1 kg connectors 1 3 3 Physical Characteristics GTX 320A Bezel Height Bezel Width Rack Height Dimple to Dimple Rack Width Depth Behind Panel with 8 78 inches 223 mm Connectors measured from face of aircraft panel to rear of connector backshells Weight Unit Only 2 3 Ibs 1 1 kg Weight Installed with rack and 2 9 Ibs 1 3 kg connectors 14 EQUIPMENT AVAILABLE 1 4 1 Configurations Available ITEM GARMIN P N GARMIN GTX 320 Transponder 010 00135 00 GARMIN GTX 320A Transponder 010 00247 00 GARMIN GTX 320 Transponder includes GARMIN installation kit P N 010 10161 00 010 00135 03 GARMIN GTX 320A Transponder includes GARMIN installation kit P N 010 10161 01 010 00247 02 Page 2 GTX 320 320A Installation Manual Rev L 190 00133 01 1 4 2 Installation Accessories Rear Backplate Mounting Rack Rear Backplate and Connector Kit Includes 115 00285 00 011 00677 01 and 011 00651 01 Note A transponder antenna approved to TSO C66 or C74 that has been installed to meet the requirements of this manual may be approved for use with the GTX 320 320A 1 5 ADDITIONAL EQUIPMENT REQUIRED Antenna Sealant Use antenna manufacturer s instructions install according to FAA AC 43 13 2 Cables The installer will supply all system cables Cable requirements and fabrication i
30. ram e BS Dual Transponder Interconnect Wiring Diagram e NARCO AT 150 Installation Adapter Assembly Drawing e KING KT 76A 78A Adapter Assembly Drawing Page 24 GTX 320 320A Installation Manual Rev L 190 00133 01 il 7 N 4 61 o U 1 BEZEL n uuu 6 o Pa H mn 32 n co s 8 D 3 PAN I CET 1 put 8 20 amp i desi 3 oC _ 6 3 Figure Bi GTX 320 320A OUTLINE DRAWING GTX 320 320A Installation Manual Page 25 Page 26 blank 190 00133 01 Rev L THESE HOLES NOT USED NOTE KIT WILL INCLUDE EITHER ITEM 6 OR ITEM 12 REFER TO SECTION 2 FOR ADDITIONAL INFORMATION 011 00338 00 CONNECTOR RACK KIT ITEM PARTNUMBER DESCRIPTION QTY 1 211 63234 12 SCREW 4 40X 75 FLHP SS P 2 2 212 20014 00 WSHR FLAT NON STD SS 1 3 232 00013 01 SNAP RING EXT 7 16 1 4 330 00220 25 BACKSHELL D SUB METAL 25 POS 1 5 330 00184 25 CONN D SUB MIL CRP SCKT 25 1 SEE NOTE 6 330 00198 00 CONN BNC MALE BLINDMATE 1 NOT SHOWN 336 00022 00 CONT SCKT MIL CRP SIZE 20 25 NOT SHOWN 336 00023 00 CONT SCKT MIL CRP SIZE 20 18 5 NOT SHOWN 312 00005 05 TUBING HT SHRINK 23IN 7 115 00285 00 INSTALL RACK 1 8 125 00032 02 BACK PLATE 1 9 211 60234 06 SCREW 4 40X 187 PHP SS P 4 10 125 00046 00 NUT PLATE D SUB 25 POSITION 1 11 234 10002 00 SPRING WASHER 1 147 SEE NOTE 12 330 00326 00 RF ADAPTE
31. rmal flight attitudes IDENT BUTTON REPLY LIGHT CODE SELECTION KNOBS FUNCTION SELECTION KNOB Figure 3 1 Transponder Front Panel GTX 320 Shown The Transponder should be turned off before starting aircraft engine s Page 14 GTX 320 320A Installation Manual Rev L 190 00133 01 3 2 1 Function Selection Switches The function selector switch is a five position rotary switch The five positions are e OFF Turns off all power to the GTX 320 320A e SBY Turns the transponder on but when in SBY the transponder will not reply to any interrogations from the ground radar system e ON Places the transponder in Mode the identification mode In addition to the aircraft s identification code the transponder will also reply to altitude interrogations mode C with signals that do not contain altitude information e ALT Places the transponder in Mode A and Mode the identification and altitude reporting modes to respond to ATC aircraft identification interrogations and altitude interrogations with standard pressure altitude 29 92 inches Hg received from an external altitude digital encoder The ALT position may be used in aircraft that are not equipped with the optional altitude encoder however the only response will be discreet signals that do not contain altitude information Any time the function switch is in the ON or ALT position the transponder becomes an active part of the beacon system
32. rmed in accordance with FAA field approval policy the owner operator operating under Part 91 is responsible for ensuring that the ICA is made part of the applicable section 91 409 inspection program for their aircraft This is accomplished when a maintenance entry is made in the aircraft s maintenance record in accordance with section 43 9 This entry records the major alteration and identifies the original ICA location e g Block 8 of FAA Form 337 dated along with a statement that the ICA is now part of the aircraft s inspection maintenance requirements GTX 320 320A Installation Manual Page 19 190 00133 01 Rev L A 2 ENVIRONMENTAL QUALIFICATION FORM NOMENCLATURE GTX 320 Airborne ATC Transponder Equipment TYPE MODEL PART NO 010 00135 00 10 TSO C74c Class 1A MANUFACTURER S SPECIFICATION AND OR OTHER APPLICABLE SPECIFICATION 004 00042 00 MANUFACTURER GARMIN INTERNATIONAL ADDRESS 1200 E 151st St Olathe KANSAS 66062 Conditions RTCA DO 160C Description of Conducted Tests Section Temperature and Altitude 4 0 Equipment tested to Categories 1 amp DI except as noted Low Temperature 4 5 1 High Temperature 4 5 2 amp 4 5 3 In Flight Loss of Cooling 4 5 4 Cooling air not required Altitude 4 6 1 Decompression 4 6 2 Overpressure 4 6 3 Equipment tested to Category Humidity _______ 60 Equipment tested to Category A Shock 7 0 Equipment tested according to DO 160C Par 7 2 1 Operational Crash Saf
33. s detailed in Section 2 of this manual Hardware 6 Flat Head Screw 6 ea and 6 32 Self Locking Nut 6 Hardware required to mount installation rack is not provided 1 6 INSTALLATION APPROVAL The conditions and tests required for TSO approval of the GTX 320 320A Transponder and antenna are minimum performance standards It is the responsibility of those desiring to install this transponder and antenna either on or within a specific type or class of aircraft to determine that the aircraft installation standards are within the TSO standards The GTX 320 320A and antenna may be installed only if further evaluation by the applicant documents an acceptable installation and is approved by the administrator For GTX 320 320A TSO compliance see Appendix A For antenna TSO compliance refer to antenna manufacturer s literature 1 7 TRANSPONDER TESTS AND INSPECTIONS The ATC transponder tests required by 14 CFR Part 91 413 may be conducted using a bench check or portable test equipment and must meet the requirements prescribed in Part 43 Appendix F If portable test equipment with appropriate coupling to the aircraft antenna system is used operate the test equipment for ATCRBS transponders at a nominal rate of 235 interrogations per second to avoid possible ATCRBS interference An additional 3 dB loss is allowed to compensate for antenna coupling errors during receiver sensitivity measurements conducted in accordance with Part 43
34. tance to the installing agency in preparing Instructions for Continued Airworthiness ICA in response to Bulletin Number HBAW 98 18 Checklist for Instructions for Continued Airworthiness for Major Alterations Approved Under the Field Approval Process effective 10 7 98 Aviation Authority approved installers are hereby granted permission to reference appropriate service instructions and excerpts from this Installation Manual to accomplish the Instructions for Continued Airworthiness This permission does not construe suitability of the documents It is the applicant s responsibility to determine the suitability of the documents for the ICA Following is a suggested ICA for a GARMIN GTX 320 320A unit installation Some of the checklist items do not apply in which case they should be marked N A Not Applicable INSTRUCTIONS FOR CONTINUED AIRWORTHINESS GARMIN GTX 320 320A 1 Introduction Aircraft that has been altered Registration N number Make Model and Serial Number Content Scope Purpose and Arrangement This document identifies the Instructions for Continued Airworthiness for the modification of the above aircraft by installation ofa GARMIN GTX 320 320A Applicability Applies to aircraft altered by installation of the GARMIN GTX 320 320A Definitions Abbreviations None N A Precautions None N A Units of Measurement None N A Referenced Publications GARMIN GTX 320 320A Installation Manual P N 190 00133 01
35. tion of Protective Treatments N A Data Relative to Structural Fasteners Antenna installation removal and replacement should be in accordance with applicable provisions of AC43 13 1A and 43 13 2A Also refer to section 2 3 of this manual Special Tools N A This Section is for Commuter Category Aircraft Only A Electrical loads Refer to section 1 3 of this manual B Methods of balancing flight controls N A C Identification of primary and secondary structures N A D Special repair methods applicable to the airplane Antenna installation removal and replacement should be in accordance with applicable provisions of AC43 13 1B and 43 13 2A Overhaul Period No additional overhaul time limitations Airworthiness Limitation Section N A Page 18 GTX 320 320A Installation Manual Rev L 190 00133 01 16 Revision revise this ICA letter must be submitted to the local FSDO with a copy of the revised FAA Form 337 and revised ICA The FAA inspector accepts the change by signing Block 3 and including the following statement The attached revised new Instructions for Continued Airworthiness date for the above aircraft or component major alteration have been accepted by the FAA superseding the Instructions for Continued Airworthiness date 17 Assistance Flight Standards Inspectors have the resources to respond to questions regarding the ICA Implementation and Record Keeping For major alterations perfo
36. y of 1090 MHz As with other Mode A Mode C transponders the GTX 320 320A replies with any one of 4 096 codes which differ in the position and number of pulses transmitted By replying to ground transmissions your GTX 320 320A enables ATC computers to display aircraft identification altitude and ground speed on ATC radar screens The GTX 320 320A is equipped with IDENT capability that activates the Special Position Identification Pulse SPI for approximately 20 seconds 18 seconds for the GTX 320A identifying your transponder return from other aircraft on the controller s scope 1 3 TECHNICAL SPECIFICATIONS 1 3 1 Transponder Specifications GTX 3204 FAA TSO C74c RTCA DO 160D JTSO C74c 20 C to 55 C Continuous Operation GTX 320 11 0 to 33 0 VDC 12 Watts Max GTX 320A 11 0 to 33 0 VDC 20 Watts Max Transmitter Frequency 1090 MHz 125 Watts minimum 150 Watts nominal at the antenna with 1 5 dB coaxial cable loss at 1090 MHz GTX 320 72 dBm Nominal for 90 replies GTX 3204 74 dBm Nominal for 90 replies Mode C Capability 100 Foot Increments from 1000 to 63 000 Feet External Suppression Input Low lt 0 5 V High gt 8 V GTX 320 320A Installation Manual Page 1 190 00133 01 Rev L 1 3 2 Physical Characteristics GTX 320 Bezel Height Bezel Width Rack Height Dimple to Dimple Rack Width Depth Behind Panel with 8 78 inches 223 mm Connectors measured from face of aircraft panel to rear of c

GTX 320/320A TRANSPONDER INSTALLATION MANUAL

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