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Garmin GTX 23 - page 1
190-00906-01 June, 2014 Revision C GTX 23 Transponder Installation Manual ...
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Garmin GTX 23 - page 2
190-00906-01 GTX 23 Installation Manual Rev. C Page A © 2014 Garmin Ltd. or its subsidiaries All Rights Reserved Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloade d or stored in any storage medium, for any purpose without the express prior written consent of Garmin. Garmin h ...
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Garmin GTX 23 - page 3
190-00906-01 GTX 23 Installation Manual Rev. C Page i INFORMATION SUBJECT TO EXPORT CONTROL LAWS This document may contain inform ation which is subject to the Ex port Administration Regulations ("EAR") issued by the United States Department of Commerce (15 CFR, Chapter VII, Subchapter C) and which may not be expo rted, released, or discl ...
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Garmin GTX 23 - page 4
190-00906-01 GTX 23 Installation Manual Rev. C Page ii CURRENT REVISION DESCRIPTION Revision Page Number(s) Section Number Description of Change C 1-5 1.7 Added modular rack info to physical characteristics table 1-8 1.9.2 Updated TSO/ETSO Deviations Table 1- 6 1-9 1.10 Updated operatin g instructions info 2-1 2.2 Added new unit w/system rack part ...
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Garmin GTX 23 - page 5
190-00906-01 GTX 23 Installation Manual Rev. C Page iii Aviation Limited Warranty All Garmin avionics products are warranted to be free from defects in materials or workmanship for: two years from the date of purchase fo r new Remote-Mount and Panel-Mount products; one year from the date of purchase for new p ortable products and any pur chased new ...
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Garmin GTX 23 - page 6
190-00906-01 GTX 23 Installation Manual Rev. C Page iv TABLE OF CONTENTS PARAGRAPH PA G E Section 1 GENERAL DESCRIPTION .......... .................... .................... ...........1-1 1.1 Introduction ............................................................................................................... ....... 1-1 1.2 Equipment Descri ...
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Garmin GTX 23 - page 7
190-00906-01 GTX 23 Installation Manual Rev. C Page v PARAGRAPH PA G E Appendix B SHIELD BLOCK INSTAL LATION INSTRUCTIONS .......... B-1 B.1 Shield Block Instal lation Parts ........................................................................................ B-1 B.2 Shield Termination Technique – Method A.1 (Standard) ........................ ...
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Garmin GTX 23 - page 8
190-00906-01 GTX 23 Installation Manual Rev. C Page vi LIST OF FIGURES FIGURE P AGE Section 1 GENERAL DESCRIPTION .......... .................... .................... ...........1-1 Section 2 INSTALLATION OVERVIEW ..... ........................................ ........... 2-1 Figure 2-1. Antenna Installa tion Considerations ........................ ...
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Garmin GTX 23 - page 9
190-00906-01 GTX 23 Installation Manual Rev. C Page vii LIST OF TABLES TABLE PAGE Section 1 GENERAL DESCRIPTION .......... .................... .................... ...........1-1 Table 1-1 ADS-B Ve rsions ...................................................... .............................................. 1-2 Table 1-2 Physical Char acteristics .. ...
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Garmin GTX 23 - page 10
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-1 1 GENERAL DESCRIPTION 1.1 Introduction This manual is intended to prov ide mechanical and electrical inform ation for use in the planning and design of an installation of the GTX 23 into an aircra ft. This manual is not a substitute for an approved airframe-specific maintenance manual, install ...
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Garmin GTX 23 - page 11
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-2 1.3 ADS-B Cap abilities The GTX 23 provides the capab ilities of Automatic Dependent Su rveillance-Broadcast (ADS-B) technology , which improves situationa l awareness and flight safety . W ith ADS-B capabilities, position, velocity , and heading information are automatically transmitted to ot ...
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Garmin GTX 23 - page 12
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-3 1.3.1.1 Inst allation Approval of V ersion 1 ADS-B Systems GTX 23 w/ES transponders running software versions v6.00 through v6.2 0 support Version 1 ADS-B Ou t functionality. According to AIR-130 Policy Memo ‘ Approval for ADS-B Out Systems’ , dated August 30, 2010, the FAA has suspended f ...
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Garmin GTX 23 - page 13
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-4 1.5 Mutual Suppression Pulses Other equipment on board the aircraft may transmit in the same frequency band as the transponder . DME, TCAS, or another transponder are examples of equipmen t that operate in the same frequency band. Mutual suppression is a synchronous pulse that is sent to the o ...
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Garmin GTX 23 - page 14
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-5 1.7 T ech nical Specifications 1.7.1 Physical Characteristics 1.7.2 General Spe cifications T able 1-2 Physical Characteristics Characteristic Specification Modular Rack Width 1.72 inches [44 mm] Modular Rack Height 6.30 inches [160 mm] Modular Rack Weight 0.4 lbs [0.18 kg] Stand-Alone Rack Wi ...
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Garmin GTX 23 - page 15
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-6 1.7.3 Power Requirement s 1.8 License Requirement s The T elecommunications Act of 19 96, ef fective February 8, 199 6, provides the FCC discretion to eliminate radio station license requirements for aircra ft and ships. The GTX 23 installation must comply with current transmitter licensing re ...
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Garmin GTX 23 - page 16
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-7 1.9.1 GTX 23 TSO/ETSO/RTCA/ICAO Compliance T able 1-5 TSO/ETSO/RTCA/ICAO Com pliance Function Performance Standard (TSO/ETSO/RTCA/ EUROCAE) Category Applicable LRU SW Part Numbers Air Traffic Co ntrol Radar Beacon System/Mode Select (ATCRBS /MODE S) Ai rborne Equipment TSO-C112 Class 2A All 00 ...
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Garmin GTX 23 - page 17
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-8 1.9.2 TSO/ETSO Deviations T able 1-6 TSO/ETSO Deviations TSO/ETSO Deviation TSO-C112 1. Garmin was granted a deviation from TSO-C112 to use RT CA DO-178B instead of RTCA DO-178A. 2. Garmin was granted a deviation from TSO-C112 to use RT CA DO-160D instead of RTCA DO-160B. 3. Garmin was granted ...
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Garmin GTX 23 - page 18
190-00906-01 GTX 23 Installation Manual Rev. C Page 1-9 1.10 Operating Instructions The GTX 23 is a remote-mount LRU with no user contro ls or indicators. All user interface is accomplished through a compatible display device . Although dif ferent displays will handle the transponder interface differently , all will typically have the following use ...
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Garmin GTX 23 - page 19
190-00906-01 GTX 23 Installation Manual Rev. C Page 2-1 2 INST ALLA T ION OVER VIEW 2.1 Introduction This section provides hardware eq uipment information for installing the GTX 23 Mode S transponder , related hardware, and optional accessories. Installatio n of the GTX 23 should follow the data detailed in this manual. Cabling is fa bricat ed by t ...
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Garmin GTX 23 - page 20
190-00906-01 GTX 23 Installation Manual Rev. C Page 2-2 2.2.2 Additional Equipment Required The following installation accessorie s are required but not provided: • Cables – The installer will supply all system cables including circu it breakers. Cable requirements and fabrication is detailed in Section 3 of this manual. • Hardware – #6-32 ...
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Garmin GTX 23 - page 21
190-00906-01 GTX 23 Installation Manual Rev. C Page 2-3 2.3 Inst allation Considerations 2.3.1 Preservation of Previous Systems It is the installer ’ s responsibility to preserve the essential characteristic of the aircraft being modified with this equipment to be in accordance with the aircraft manufacturer’ s or iginal design. This includes t ...
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Garmin GTX 23 - page 22
190-00906-01 GTX 23 Installation Manual Rev. C Page 2-4 2 . 4 Cabling and Wiring Refer to the interconnect examples in Appendix C for wire gauge guidance. Ensure that routing of th e wiring does not come in contact with sources of heat, RF or EMI interference. Check that there is ample space for the cabling and mating connectors. A void sharp bends ...
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Garmin GTX 23 - page 23
190-00906-01 GTX 23 Installation Manual Rev. C Page 2-5 2.4.1 Cable Routing Considerations After the cable assemblies are made and wiring installe d to the rack back plate, route wiring bundle as appropriate. Use cable ties to secure the cable as sem blies and coax to provide strain relief for the cable assemblies. When routing cables, observe the ...
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Garmin GTX 23 - page 24
190-00906-01 GTX 23 Installation Manual Rev. C Page 2-6 Figure 2-2. GTX 23 S t and-Alone Rack (1 15-00629-00) Figure 2-3. GTX 23 Modular Rack (1 15-00438-00) ...
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Garmin GTX 23 - page 25
190-00906-01 GTX 23 Installation Manual Rev. C Page 2-7 Figure 2-4. GTX 23 S t and-Alone Rack, Suggested Mounting Loca tions ...
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Garmin GTX 23 - page 26
190-00906-01 GTX 23 Installation Manual Rev. C Page 3-1 3 INST ALLA TION PROCEDURE 3.1 Unp acking Unit Carefully unpack the equipment and make a v isual in spection of the unit for ev idence of damage incurred during shipment. If the unit is damaged, notify the carrier and file a claim. T o justify a claim, save the original shipping container and ...
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Garmin GTX 23 - page 27
190-00906-01 GTX 23 Installation Manual Rev. C Page 3-2 3 . 4 Backshell Assembly The GTX 23 connector kit inc ludes one Garmin backshell assembly . Garmin’ s backshells give the installer the ability to quickly and eas ily terminate shield ground s at the backshell housing. Refer to Appendix B for Shield Block Inst allatio n Instructions. 3.5 Wei ...
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Garmin GTX 23 - page 28
190-00906-01 GTX 23 Installation Manual Rev. C Page 3-3 3.7 Final Inst allation For final installation and assembly , refer to the outlin e and installation drawings shown in Appe ndix D of this manual. a. Assemble the connector backsh ell as de scribed in Appendix B. b. Attach the connector to the rear plate usin g the screws provided in the conne ...
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Garmin GTX 23 - page 29
190-00906-01 GTX 23 Installation Manual Rev. C Page 3-4 3.8.3 Performance (Ramp) T est CAUTION If the unit is removed from the aircraf t and operated, always con nect J2302 to an antenna or a 50 , 5-W att load. The GTX 23 transmit s Mode S acquisition squitters about once per second whether interrogations are received or not. The unit may becom ...
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Garmin GTX 23 - page 30
190-00906-01 GTX 23 Installation Manual Rev. C Page 4-1 4 SYSTEM INTERCONNECTS 4.1 Pin Function List 4.1.1 P2301 Figure 4-1. J2301 Connector T able 4-1 P23 01 Pin Assignment s Pin Pin Name I/O 1 NOT USED -- 2 NOT USED -- 3 NOT USED -- 4 NOT USED -- 5 NOT USED -- 6 NOT USED -- 7 NOT USED -- 8 NOT USED -- 9 NOT USED -- 10 NOT USED -- 11 NOT USED -- 1 ...
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Garmin GTX 23 - page 31
190-00906-01 GTX 23 Installation Manual Rev. C Page 4-2 Pin Pin Name I/O 31 MUTUAL SUPPRESSION I/O I/O 32 NOT USED -- 33 NOT USED -- 34 ARINC 429 OUT 1 B Out 35 NOT USED -- 36 NOT USED -- 37 ARINC 429 OUT 1 A Out 38 NOT USED -- 39 POWER GROUND -- 40 NOT USED -- 41 NOT USED -- 42 AIRCRAFT POWER 1 In 43 RS-232 GROUND -- 44 NOT USED -- 45 NOT USED In ...
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Garmin GTX 23 - page 32
190-00906-01 GTX 23 Installation Manual Rev. C Page 4-3 4.1.2 Aircraf t Power Power input requirements are listed in the following tables. The power input pins accept 14/28 Vdc. Refer to Figure C-1 and C-2 for power interconnections. 4.2 Discrete Functions 4 . 2 . 1 Discrete Outputs External suppression should be connected if a DME or TCAS is insta ...
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Garmin GTX 23 - page 33
190-00906-01 GTX 23 Installation Manual Rev. C Page 4-4 4 . 2 . 2 Discrete Inputs Sink current is internally limited to 200 u A max for a grounded inp ut EXTERNAL IDENT SELECT (remote IDENT) is a mome ntary input. When gr ounded, it activates the IDENT pulse for 18 seconds in Mode A replies. EXTERNAL ST ANDBY SELECT (remote ST ANDBY) is not a momen ...
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Garmin GTX 23 - page 34
190-00906-01 GTX 23 Installation Manual Rev. C Page 4-5 4.3 Serial Dat a Electrical Characteristics 4.3.1 RS-232 Input/Output RS-232 input #1 is used to receiv e pressure altitude control commands. RS-232 output #1 provides unit status and TIS data. RS-232 #1 in put and output are also used for software upgrades. For installations that enable ADS - ...
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Garmin GTX 23 - page 35
190-00906-01 GTX 23 Installation Manual Rev. C Page 4-6 4.4 RS-232 Input/Output, Sof t ware Up date Connections GTX 23 software is updated using th e RS-232 #1 interface. When wiring the RS -232 #1 interface to the rest of the system, it may be useful to splice in a pi gtail connector that could be plugged into a laptop computer . Also when wiring, ...
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Garmin GTX 23 - page 36
190-00906-01 GTX 23 Installation Manual Rev. C Page A-1 APPENDIX A CONSTRUCTION AND V ALIDA TION OF STRUCTURES A.1 S t atic T est Loading This appendix includes information necessary for testing load-carrying capabilities of equipment mounting structures, such as shelves, mounting plates and mo unting bracke ts, used to mount the GTX 23 remote moun ...
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Garmin GTX 23 - page 37
190-00906-01 GTX 23 Installation Manual Rev. C Page A-2 7. Examine the support structure carefully . If the re has been damage or permanent deformation, the structure is not suitable and must be replaced with one that is strong enough to withstand the test loads. Examine all aircraft stringers, bulkhe ads and skin surfaces, which may have direct or ...
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Garmin GTX 23 - page 38
190-00906-01 GTX 23 Installation Manual Rev. C Page B-1 APPENDIX B SHIELD BLOCK IN ST ALLA TION INSTRUCTIONS B.1 Shield Block Inst allation Parts CAUTION Disclaimer : This instruction manual assumes skill and knowledge of aircraft harness fabrication techniques . DO NOT PERFORM THIS INSTALLATION IF YOU A RE UNQUALIFIED . T ables B-1 & B-2 list ...
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Garmin GTX 23 - page 39
190-00906-01 GTX 23 Installation Manual Rev. C Page B-2 NOTE In Figur e B-1, “AR” denotes quantity “As Requir ed” for the particular installation. Figure B-1 Shield Block Inst allation (78 pin example) 18 ...
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Garmin GTX 23 - page 40
190-00906-01 GTX 23 Installation Manual Rev. C Page B-3 B.2 Shield T ermination T e chni que – Method A.1 (St andard) NOTE For the following steps pl ease r efer to Figur e B-l. 1. Attach the Shield Block(s) (Item 2) to the b ackshell (Item 1) by inserting the flathead screws (Item 3) through the holes on the Shield Block an d threading into the ...
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Garmin GTX 23 - page 41
190-00906-01 GTX 23 Installation Manual Rev. C Page B-4 3. Connect a Flat Braid (Item 6) to the shield ex posed through the window of the prepared cable assembly (Item 4) from step 2. The Flat Braid sh ould go out the front of the termination towards the connector . It is not permitted to exit the rear of the te rmination and loop back towards the ...
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Garmin GTX 23 - page 42
190-00906-01 GTX 23 Installation Manual Rev. C Page B-5 Secondary Method: Solder a Flat Braid (Item 6) to the shield exposed through the wind ow of th e prepared cable assembly (Item 4). Ensure a s olid electrical connection throug h the use of acceptable solde ring practices. Use care to avoid applying excessive heat that burns through the insulat ...
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Garmin GTX 23 - page 43
190-00906-01 GTX 23 Installation Manual Rev. C Page B-6 6. Insert newly crim ped pins and wires into the ap propriate connector housing location as specified by the installation wiring diagrams. 7. Cut the Flat Braid (Item 6) to a length that, with the addition of a ring terminal, will reach one of the tapped holes of the Shield Block (Item 2) (Fig ...
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Garmin GTX 23 - page 44
190-00906-01 GTX 23 Installation Manual Rev. C Page B-7 B.3 Shield T ermination T echnique - Method A.2 (Daisy Chain) In rare situations where more braids need to be termin ated for a conne ctor than three per ring terminal it is allowable to daisy chain a maximum of two shields together before coming to the ring terminal (Figure B-4). All other re ...
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Garmin GTX 23 - page 45
190-00906-01 GTX 23 Installation Manual Rev. C Page B-8 At the end of the shielded cable (I tem 4), strip “Quick T erm Min” to “Quick T erm Max” (T able B-4) length of the jacket to ex pose the shield. Next trim the shield so that at most 0.35 inches remains extending beyond the insulating ja cket. Fold this remaining sh ield back over the ...
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Garmin GTX 23 - page 46
190-00906-01 GTX 23 Installation Manual Rev. C Page B-9 B.5 Shield T ermination-Method B.2 (Daisy Chain-Quick T erm) In rare situations where more braids need to be termin ated for a conne ctor than three per ring terminal it is allowable to daisy chain a maximum of two shields together before coming to the ring terminal (Figure B-6). All other res ...
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Garmin GTX 23 - page 47
190-00906-01 GTX 23 Installation Manual Rev. C Page B-10 B.6 Daisy Chain between Methods A and B In rare situations where more braids need to be terminated for a connec tor than three per ring terminal and a mixture of Methods A and B have been used, it is allowable to daisy chain a maximum of two shields together from a Method A termination to a M ...
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Garmin GTX 23 - page 48
190-00906-01 GTX 23 Installation Manual Rev. C Page B-11 Figure B-8 D-Sub Spli ced Signal Wire illustration ...
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Garmin GTX 23 - page 49
190-00906-01 GTX 23 Installation Manual Rev. C Page C-1 APPENDIX C INTERCONNECT DR A WINGS (Example Only) Figure C-1 Core Interconne ct Examples GTX 23 P2301 21 42 XPDR CIRCUIT BREAKER 39 XPDR CIRCUIT BREAKER 56 60 58 EXTERNAL IDENT SELECT MUTUAL SUPPRESSION I/O SEE NOTE 3 12 31 RS-232 IN 1 RS-232 GROUND 22 43 P731 19 40 RS-232 OUT 3 SIGNAL GROUND ...
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Garmin GTX 23 - page 50
190-00906-01 GTX 23 Installation Manual Rev. C Page C-2 APPENDIX C INTERCONNECT D RAWINGS (EXAMPLE ONLY) Figure C-2 ADS-B Interconnect Examples NOTES: 1. IF THE INSTALLATION DOES NOT INTEND T O TR ANSMI T ADS-B INFORMATION, TH EN NONE OF THE CONNECTIONS ON THIS PAGE A RE NECESSARY . IF THE INSTALLATION DOES INTEND T O TRANSMIT ADS-B INFORM ATION, T ...
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Garmin GTX 23 - page 51
190-00906-01 GTX 23 Installation Manual Rev. C Page C-3 APPENDIX C Interconnect Dr awings (Example Only) Figure C-3 TIS Display Options Example GTX 23 P2301 ARINC 429 OUT 2 A ARINC 429 OUT 2 B 30 28 P4001/5001 GNS 4XX/5XX 50 ARINC IN 2A 46 TIS CONNECT SELECT 51 11 ARINC IN 2B ANNUNCIA TE E TIS Setup The GDU 37 X will display TIS traffic data from t ...
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Garmin GTX 23 - page 52
190-00906-01 GTX 23 Installation Manual Revision C Page D-1 APPENDIX D OUTLINE AND INST ALLA TION DRA WINGS Figure D-1 GTX 23 in S t andalone Rack, Outline Drawing 9.69 246.0 11.42 290.0 6.49 164.9 6.92 175.7 5.3 CENTER OF GRAVITY 135 3.6 CENTER OF GRAVITY 90 .9 CENTER OF GRAVITY 23 4X .19 4.8 1.78 45.3 .32 8.2 1.14 29.0 1.92 48.7 6.25 158.8 ...
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Garmin GTX 23 - page 53
190-00906-01 GTX 23 Installation Manual Revision C Page D-2 APPENDIX D OUTLINE AND INST ALLA TION DRA WINGS Figure D-2 GTX 23 Connector/St andalone Rack Assembly Drawing 115-00629-00 125-00002-00 011-00950-03 NOTE 3 211-63234-11 (2 PLACES) 211-60234-08 (2 PLACES) 330-00053-01 (BNC) OR 330-00053-02 (TNC) 212-00022-00 NUT SUPPLIED WITH 330-00053-XX N ...
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Garmin GTX 23 - page 54
190-00906-01 GTX 23 Installation Manual Revision C Page D-3 APPENDIX D OUTLINE AND INST ALLA TION DRA WINGS Figure D-3 GTX 23 in Modular Rack, Outline Drawing 9.64 244.8 10.77 273.6 6.30 160.0 7.26 184.4 11.37 288.8 4.9 CENTER OF GRAVITY 124 3.2 CENTER OF GRAVITY 81 6X NOTE 3 (BOTH SIDES) 6X NOTE 3 .377 ±.010 9.58 ±0.25 3.350 ±.010 85.09 ±0.25 ...
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Garmin GTX 23 - page 55
190-00906-01 GTX 23 Installation Manual Revision C Page D-4 APPENDIX D OUTLINE AND INST ALLA TION DRA WINGS Figure D-4 GTX 23 Connector/Modular Rack Assembly Drawing 115-00438-00 011-00950-03 NOTE 3 211-60234-08 (2 PLACES) 211-63234-11 (2 PLACES) 330-00053-01 (BNC) OR 330-00053-02 (TNC) 212-00022-00 NUT SUPPLIED WITH 330-00053-XX NOTES: IF REMOVED, ...
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