Garmin GTX 45R Installation Manual
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Garmin GTX 45R Installation Manual

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GTX 35R/45R Installation Manual
(Non-Certified Aircraft)
190-01499-10
October 2017
Revision 1

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Summary of Contents for Garmin GTX 45R

  • Page 1 GTX 35R/45R Installation Manual (Non-Certified Aircraft) 190-01499-10 October 2017 Revision 1...
  • Page 2 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...
  • Page 3 California to cause cancer, birth defects, or reproductive harm. This notice is provided in accordance with California's Proposition 65. If you have any questions or would like additional information, please refer to Garmin’s website, www.garmin.com/prop65. WARNING Perchlorate Material – special handling can apply.
  • Page 4 Agreement (hereinafter the “Agreement”) and is subject to the following terms and conditions which are agreed to by End User (“Licensee”, “you” or “your”), on the one hand, and Garmin and its licensors and affiliated companies of Garmin and its licensors, on the other hand. The Licensed Software is licensed, not sold, to you.
  • Page 5 Term. The term of this Agreement shall commence on the Effective Date, and shall continue in perpetuity thereafter, unless terminated earlier as provided in this Section 4. Termination by Garmin. Garmin may immediately terminate this Agreement upon written notice to Licensee if Licensee commits a material breach of this Agreement or breaches a material term of this Agreement.
  • Page 6 DOCUMENTATION, EVEN IF GARMIN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH LOSS OR DAMAGES. Indemnity. Licensee shall indemnify, defend and hold Garmin and its affiliates harmless against any and all losses, claims, actions, causes of action, liabilities, demands, fines,...
  • Page 7 No Devices or Services. Licensee acknowledges and agrees that nothing in this Agreement shall be construed as requiring Garmin to: (a) provide or supply the Devices or any other devices or hardware to Licensee; (b) grant any licenses to any software other than the Licensed Software;...
  • Page 8 Entire Agreement. This Agreement shall constitute the entire agreement between Garmin and you with respect to the subject matter hereof and will supersede all prior negotiations, agreements and understandings of Garmin and you of any nature, whether oral or written, with respect to such subject matter.

  • Page 9: Table Of Contents

    TIS-A System Capabilities ......................1-6 Interface Summary ........................1-6 General Specifications....................... 1-7 Transponder Specifications ....................... 1-7 1.10 UAT Receiver Specifications (GTX 45R Only) ............... 1-8 1.11 1090 MHz Receiver Specifications ................... 1-8 1.12 Power Specifications ......................... 1-8 1.13 Certification..........................1-9 1.14 License Requirements ......................
  • Page 10 .....................5-1 ONNECTOR INOUT NFORMATION Main Board Connector - P3251....................5-1 ADS-B Board Connector – P3252 (GTX 45R Only)..............5-4 Power............................5-5 Altitude Inputs ........................... 5-6 Discrete I/O ..........................5-7 Serial Data Interfaces ........................5-8 Suppression Bus ........................5-9 Garmin Altitude Encoder ......................5-10 USB Interface ..........................

  • Page 11: System Overview

    GTX 35R GTX 45R Mode S/ES ADS-B traffic in (UAT and 1090 MHz) Connext (via RS-232 and Bluetooth) FIS-B In TIS-A traffic Pressure sensor module (optional) Interface to Garmin G3X 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page 1-1...

  • Page 12: Definitions And Abbreviations

    Environmental Qualification Form Extended Squitter Federal Aviation Administration Federal Communications Commission Flight Control Unit FIS-B Flight Information Services-Broadcast Flight Manual Supplement Garmin Altitude Encoder GNSS Global Navigation Satellite System Global Positioning System Garmin Transponder HSDB High Speed Data Bus Latitude...
  • Page 13 Portable Electronic Device PIREP Pilot Weather Report Pilot Operating Handbook RAIM Receiver Autonomous Integrity Monitoring RFMS Rotorcraft Flight Manual Supplement SATCOM Satellite Communications SBAS Satellite-Based Augmentation System SIGMET Significant Meteorological Information Source Integrity Level Special Position Indicator Special Use Airspace Terminal Area Forecast Traffic Advisory System TCAS...

  • Page 14: Ads-B Capabilities

    1.4.2 ADS-B In The GTX 45R includes receivers for both the UAT and the 1090 MHz frequency bands for all ADS-B In data reception capabilities. The GTX 45R receives ADS-B transmissions from other ADS-B Out equipped aircraft, ADS-R, and TIS-B information from ground stations. The GTX 45R supplies ADS-B data to G3X Touch displays, certain Garmin panel-mount navigators, and certain portable devices via Bluetooth.
  • Page 15 • Regional NEXRAD • CONUS NEXRAD 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page 1-5...

  • Page 16: Tis-A System Capabilities

    TIS-A System Capabilities The GTX 35R supplies information about nearby traffic through the FAA provided radar based TIS-A service. Advisory traffic information is shown on G3X/G3X Touch displays, and compatible Garmin panel-mount navigators. Interface Summary Table 1-2 Interface Summary GTX 35R...

  • Page 17: General Specifications

    2.0 lb (0.91 kg) GTX 35R weight with standard mounting tray, backplate, and 2.5 lb (1.13 kg) connectors GTX 45R weight with standard mounting tray, backplate, and 2.9 lb (1.32 kg) connectors -40°F to 158°F (-40°C to + 70°C) Operating temperature range For more details refer to the EQF.

  • Page 18: Uat Receiver Specifications (Gtx 45R Only)

    1.10 UAT Receiver Specifications (GTX 45R Only) Table 1-5 UAT Receiver Specifications Characteristic Specification Frequency 978 MHz + 20 ppm Modulation Continuous phase FSK, h = 0.6, raised cosine shaping, a = 0.5 Data rate 1.04 Mbps Sensitivity -96 dBm for 90% MSR 1.11...

  • Page 19: Certification

    1.13 Certification The GTX 35R/45R meets compliance with the TSO(s) when interfaced with equipment and installed in accordance with the requirements and limitations as outlined in this manual. FIS-B information, including weather information, NOTAMs, and TFR areas, are intended to assist in long- and near-term planning decision making.

  • Page 20: License Requirements

    CAUTION The UHF transmitter in this equipment is guaranteed to meet Federal Communications Commission acceptance over the operating temperature range. Modifications not expressly approved by Garmin could invalidate the license and make it unlawful to operate the equipment. NOTE For non-US installations consult the local spectrum management agency for requirements.

  • Page 21: Reference Documents

    1.15 Reference Documents These documents are additional sources of information to install the GTX 35R/45R. The technician should read all related reference materials along with this manual before unit installation. Table 1-11 Reference Documents Document Aerospace Systems Electrical Bonding and Grounding for Electromagnetic SAE ARP 1870 Compatibility and Safety FCC Form 404...

  • Page 22: Limitations

    2 LIMITATIONS The GTX 35R/45R meets the minimum performance and quality control standards that are necessary by the TSOs. 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page 2-1...

  • Page 23: Installation Overview

    AC 43.13-1B and AC 43.13-2B or later FAA approved revisions. Unit Configurations Table 3-1 GTX 35R/45R Configurations ADS-B Model Unit P/N Unit Only Kit Standard Kit GTX 35R 011-04286-00 010-01756-00 010-01756-01 GTX 45R 011-04287-00 010-01757-00 010-01757-01 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page 3-1...

  • Page 24: Accessories Supplied

    Product information kit K00-00598-07 Install rack 115-01771-00 Backplate assembly 011-02976-00 GTX 45R, standard 010-01757-01 mount Connector kit 011-02977-01 Product information kit K00-00598-08 Optional Accessories GAE altitude encoder, Garmin part number 011-03080-00 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page 3-2...

  • Page 25: Necessary Installation Materials And Accessories Not Supplied

    • Shielded wire (MIL-C-27500 or equivalent) • Aircraft grade category 5 Ethernet cable or MIL-27500 shielded twisted-pair cable is necessary for installations utilizing the HSDB interfaces (GTX 45R to GTN and/or GTS installations only) • Mounting hardware • Circuit breaker of applicable rating •...

  • Page 26: Transponder Antenna

    Transponder Antenna NOTE For the GTX 45R some types of transponder antennas that utilize thin radiator elements are only intended for use at 1030 and 1090 MHz. These types of antennas should be evaluated on a model-by-model basis to determine their suitability for UAT receivers.

  • Page 27: Minimum Systems Configuration

    Minimum Systems Configuration • • Transponder antenna • G3X system • An appropriate GPS position source 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page 3-5...

  • Page 28: Gtx Pressure Altitude Input

    G3X ADAHRS 3.10 ADS-B In Considerations (GTX 45R Only) The GTX 45R provides ADS-B In data regardless of the state of the transponder. HSDB ADS-B In displays cannot connect to more than one ADS-B In source. NOTE Do not install with a GDL 88.

  • Page 29: Antenna Considerations

    3.12 Antenna Considerations Mounting location considerations for the antenna(s) are provided in this section. 3.12.1 Transponder Antenna NOTE Ground planes must be considered for installations on composite aircraft. Conductive wire mesh, radials, or thin aluminum sheets embedded in the composite material supply the ground plane to maximize the antenna pattern (gain).

  • Page 30: Electrical Bonding

    3.13 Electrical Bonding Make sure the transponder antennas are electrically bonded to the aircraft. 3.14 Cabling and Wiring Use AC 43.13-1B chapter 11, sections 8 through 13 to install wiring. The considerations are as follows: • It should not be possible for the cable harness to be exposed to wire chafing. •...

  • Page 31: Installation Procedure

    4 INSTALLATION PROCEDURE Wire Harness Installation All electrical connections, except for the antenna(s) and shield grounds, are made through the D-sub connectors on the rear of the unit. The shield grounds terminate to the connector backshells. For additional information: • Refer to section 5 for rear connector pinout and descriptions of interface connections •...

  • Page 32: Backshell Assembly Parts

    The GTX 35R/45R connector kits include backshell assemblies and ground adapter assemblies. Use the shield block ground kit to terminate shield grounds to the backshell housing. Garmin part numbers for the D-sub connectors and the backshell assemblies are in table 4-1.

  • Page 33: Shielded Cable Preparation

    P/N 011-02977-01 (GTX 45R). [4] Not supplied – must be purchased separately. [5] Solder sleeve with pre-installed shield drain wire may be used instead of items 12 and 13. [6] Not a Garmin part number. Shielded Cable Preparation NOTE Solder sleeves with pre-installed shield drains can be used instead of separate shield terminators (12) and individual wires (13).
  • Page 34 2.5" MAX 0.17" 0.31" OF EXPOSED SHIELD SHIELD DRAINS AS SHORT AS PRACTICAL (NO LONGER THAN 3”) Preferred Method 2.5" MAX 0.17" 0.31" OF EXPOSED SHIELD SHIELD DRAINS AS SHORT AS PRACTICAL (NO LONGER THAN 3”) Alternate Method Figure 4-1 Shielded Cable Preparation 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev.

  • Page 35: Connector And Backshell Assembly

    Connector and Backshell Assembly CAUTION Do not place the concave side of the strain relief clamp (9) across the cable bundle. The cable bundle can be damaged. NOTE Each tapped hole on the backshell (1) will only take two ring terminals (15). It is recommended to terminate a maximum of two wires (13) per ring terminal.
  • Page 36 PLACE SMOOTH SIDE OF STRAIN RELIEF ACROSS CABLE BUNDLE. DO NOT PLACE GROOVED SIDE ACROSS CABLE BUNDLE. Figure 4-2 Shield Termination on Backshell Assembly 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page 4-6...

  • Page 37: Coaxial Cable Installation

    Coaxial Cable Installation NOTE Make sure the length is set for the necessary cable loss. Some antennas have minimum cable loss specifications, that may need a cable longer than the physical run in the aircraft. Follow the steps below for installation of the coaxial cables. 1.

  • Page 38: Gae Installation (Optional)

    GAE Installation (optional) Installation of the optional Garmin Altitude Encoder requires connection to the aircraft static pressure source. NOTE The GAE can remain connected to the aircraft static system if the GTX 35R/45R is removed. The GAE has 1/8-27 ANPT female connection port. Added static line connections to the GAE must: •...

  • Page 39: Equipment Rack Installation

    Equipment Rack Installation 4.7.1 Standard Remote Mount Units The GTX 35R/45R standard remote mount racks can be mounted in any orientation as long as all six mounting screws are attached to a mounting bracket. Design the mounting bracket(s) for the GTX 35R/ 45R unit with the dimension shown in figure A-2.

  • Page 40: Unit Installation And Removal

    Unit Installation and Removal CAUTION The application of hex drive tool torque more than 8 in-lbs can damage the locking mechanism. NOTE When a unit is installed make sure it successfully powers up. Refer to section 6 for configuration procedures. NOTE Before placing the unit in the rack, in order to make sure the position of the retention mechanism is correct, it can be necessary to insert the hex drive tool into the access hole...

  • Page 41: Connector Pinout Information

    5 CONNECTOR PINOUT INFORMATION Main Board Connector - P3251 Table 5-1 P3251 Connector Pin Name RESERVED USB DATA HI RESERVED RESERVED ARINC 429 OUT A ARINC 429 OUT B RS-232 OUT 3 RS-232 OUT 2 RS-232 OUT 1 RESERVED RESERVED RESERVED RESERVED EXTERNAL STANDBY SELECT*...
  • Page 42 Pin Name EXTERNAL SUPPRESSION RESERVED AIRCRAFT GROUND AIRCRAFT POWER 1 RESERVED RESERVED USB DATA LO RESERVED RESERVED ARINC 429 IN 1A ARINC 429 IN 1B RS-232 IN 3 RS-232 IN 2 RS-232 IN 1 RESERVED RESERVED RESERVED RESERVED EXTERNAL IDENT SELECT* RESERVED POWER CONTROL* RESERVED...
  • Page 43 Pin Name RS-232 GND 1 RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED POWER CONFIG* RESERVED AIRCRAFT POWER 2 AIRCRAFT POWER 2 An asterisk (*) following a signal name denotes the signal is an Active-Low discretes, requiring a ground to activate. If there is no asterisk, the signal is an Active-High. 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev.

  • Page 44: Ads-B Board Connector - P3252 (Gtx 45R Only)

    ADS-B Board Connector – P3252 (GTX 45R Only) Table 5-2 P3252 Connector Pin Name ETHERNET OUT 1B ETHERNET IN 1B ETHERNET OUT 2B ETHERNET IN 2B RS-232 OUT 4 ETHERNET OUT 1A ETHERNET IN 1A ETHERNET OUT 2A ETHERNET IN 2A...

  • Page 45: Power

    Power The GTX 35R/45R is compatible with 14 VDC and 28 VDC aircraft electrical systems. The AIRCRAFT POWER 2 input is diode-isolated from AIRCRAFT POWER 1 and is used for connecting to an alternate power source, such as on an aircraft with two electrical buses. Table 5-3 Power Pins Pin Name Connector...

  • Page 46: Altitude Inputs

    25-foot resolution to ground stations and other aircraft. 5.4.1 Pressure Sensor Module The optional GAE module (Garmin P/N 011-03080-00) is used for the GTX 35R/45R pressure altitude input in installations requiring pressure altitude data that meets the requirements of TSO-C88. 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev.

  • Page 47: Discrete I/O

    Discrete I/O Active-Low discrete inputs are considered active if either the voltage to ground is <3.5 VDC or the resistance to ground is <375 ohms. These inputs are considered inactive if the voltage to ground is 6.5-33 VDC or the resistance to ground is >100 kilohm. Each is an open drain output capable of sinking 250 milliamp when active.

  • Page 48: Serial Data Interfaces

    ± 5 V when driving a standard RS-232 load. RS-232 ports 2 through 4 can be configured for different functions depending on the installation. Pins P3252-5, -10, and -15 are on the GTX 45R only. In a G3X system, RS-232 IN/OUT 1 are always connected to the #1 ADAHRS LRU.

  • Page 49: Suppression Bus

    5.6.3 HSDB The HSDB interface uses Ethernet wiring to communicate with certain Garmin panel-mount navigators and active traffic systems. Table 5-9 Ethernet Inputs and Outputs Pin Name Connector ETHERNET OUT 1A P3252 ETHERNET OUT 1B P3252 ETHERNET IN 1A P3252...

  • Page 50: Garmin Altitude Encoder

    Garmin Altitude Encoder The optional GAE altitude encoder module (Garmin P/N 011-03080-00) is used only in installations requiring pressure altitude data that meets the requirements of TSO-C88. The GAE module kits includes a wire harness for connection to the GTX 35R/45R D-sub connector.

  • Page 51: Usb Interface

    Potential damage or interference due to coupling with other cables will occur. USB interface is only used by Garmin dealers for software updates and service while the aircraft is on the ground. Do not use during normal operation or when airborne.

  • Page 52: Post Installation Configuration And Checkout

    6 POST INSTALLATION CONFIGURATION AND CHECKOUT System Configuration Overview The required GTX 35R/45R configuration and checkout procedures are as follows: • Complete the installation checks. • Configure the GTX 35R/45R for the specified installation. • Complete ground checks to make sure it interfaces to external equipment. Mounting, Wiring, and Power Checks Examine the wire harness to make sure the connection to aircraft systems and avionics equipment is correct before the unit is energized.

  • Page 53: Configuration Mode And Settings

    - for connection to GTS, otherwise not used ARINC 429 IN 2 Not Used GTX 45R: “Traffic” format, high speed - for ADS-B traffic data output to GNS GTX 35R with TIS-A data enabled: "Garmin TIS-A" format, ARINC 429 OUT high speed - for TIS-A traffic data output to GNS GTX 35R with TIS-A data disabled: "Garmin + Garmin TAS"...

  • Page 54: Unit Configuration And Software (Garmin Dealers Only)

    Unit Configuration and Software (Garmin Dealers Only) The GTX 34R/45R Installation Tool is used by Garmin dealers to update GTX unit software, and to perform calibration of the optional GAE altitude encoder module. All other configuration is performed via the displays in the G3X system.
  • Page 55 6.4.1 GAE Calibration Figure 6-2 Sensor Configuration Page (Garmin Altitude Encoder) 1. With a Pitot/static test set connected, select the GAE tab under the Sensor tab in the Configuration section. 2. Under the Installed option, select the GAE-12. 3. Select the appropriate ceiling based on the aircraft’s maximum operating altitude.

  • Page 56: Software Installation Procedure (Garmin Dealers Only)

    Software Installation Procedure (Garmin Dealers Only) CAUTION Do not turn off the unit until “Update Complete” is shown next to all selected items. Failure to do so could result in equipment damage. Use the GTX 35R/45R Install Tool through the USB port to install software on the unit.

  • Page 57: Continued Airworthiness

    7 CONTINUED AIRWORTHINESS Other than for regulatory periodic functional checks, maintenance of the GTX 35R/45R is “on condition” only. Periodic maintenance of the GTX 35R/45R is not required. NOTE The GTX 35R/45R will not reply to Mode S/A/C All Calls when not " A irborne.” The GTX 35R/45R can be placed in a temporary Airborne.

  • Page 58: Appendixa Gtx X5 Mechanical Drawings

    APPENDIX A GTX X5 MECHANICAL DRAWINGS Figure A-1 GTX 35R/45R Standard Remote Mount Assembly Shown 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page A-1...
  • Page 59 VENT 10.09 256.3 9.61 13.6 244.0 6.30 160.0 DIM B 1.72 43.8 DIM A 16.5 DIM C 11.1 12.5 6.99 177.4 Figure A-2 GTX 35R/45R Standard Remote Mount Dimensions and CG Shown 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page A-2...
  • Page 60 VENT CONNECTORS Figure A-3 GTX 35R/45R Connector and Vent Locations Figure A-4 Optional Garmin Altitude Encoder 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page A-3...

  • Page 61: Appendixb Equipment Compatibility And Configuration

    APPENDIX B EQUIPMENT COMPATIBILITY AND CONFIGURATION ADS-B In Displays (GTX 45R Only) Table B-1 ADS-B In Display GTX 45R Manufacturer Model Data Format Interface Configuration Notes Configuration Setting GDU 4xx RS-232 Connext 57600 Baud Connext Format 1 Supports traffic only (also includes GPS ADSB TFC data from the GNS 400W/500W).

  • Page 62: Gps Sources

    Configuration RS-232 RS-232 ADS-B OUT + ADS-B+ GPS GTN 6XX/7XX HSDB ADS-B In Source: GTX GTN - Enabled ADSB TFC Garmin GNS 400W/ RS-232 ADSB TFC WX 500W ADS-B OUT + ADS-B+ GPS GNS 480 RS-232 ADS-B OUT + ADS-B+ GPS...

  • Page 63: Appendixc Interconnect Drawings

    APPENDIX C INTERCONNECT DRAWINGS This section contains wiring interconnect details and examples for the connections necessary for the installation of the GTX 35R/45R Series transponders. Each figure contained in this section has notes that must be followed. These general notes apply to all of the figures contained in this section.
  • Page 64 GTX 35R/45R P3251 AIRCRAFT AIRCRAFT GND 20 GROUND AIRCRAFT GND 41 POWER CONTROL 38 POWER CONFIG 59 XPDR AVIONICS BUS AIRCRAFT POWER 21 22 AWG (28VDC or 14 VDC) AIRCRAFT POWER 42 22 AWG A/C SUPPRESSION BUS EXT SUPPRESSION GSU 25 P252 RS-232 IN 1 RS232 OUT 3...
  • Page 65 S IN G L E 4 5 R w ith S IN G L E G T N 6X X /7X X G T X 4 5 R G T N 6X X /7X X P 3 25 2 P 1 00 2 E T H E R N E T IN 1 A E T H E R N E T O U T 3A E T H E R N E T IN 1 B...
  • Page 66 A429 OUT 1B P8002 EXTERNAL EXTERNAL SUPPRESSION SUPPRESSION I/O ALERT AUDIO OUT HI ALERT AUDIO OUT LO Figure C-3 GTX 45R - GTS 8XX Interconnect Garmin GTS GTX 35R P8001 P3251 A429 OUT 1A A429 RX A A429 OUT 1B...
  • Page 67 SINGLE GNS 400W/500W SERIES P4001/ GTX 45R GNS 400W/500W P3251 P5001 RS-232 IN 2 RS232 OUT 1 RS-232 OUT 2 RS232 IN 1 RS-232 GND 2 ARINC 429 OUT A ARINC 429 IN 1A ARINC 429 OUT B ARINC 429 IN 1B...
  • Page 68 USB VBUS POW ER VBUS USB DATA HI USB DATA LO W HT USB GROUND SHIELD P325-XPDR XPDR XPDR ANTENNA ANTENNA Figure C-7 USB Programming Interface (Garmin Dealers Only) 190-01499-10 GTX 35R/45R Installation Manual (Non-Certified Aircraft) Rev. 1 Page C-6...

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