Garmin GTN 725 Installation Manual
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Garmin GTN 725 Installation Manual

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GTN 725/750
TSO Installation Manual
GTN 725 and GTN 750
190-01007-02
TBD 2010
Rev. A

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  • Page 1 GTN 725/750 TSO Installation Manual GTN 725 and GTN 750 190-01007-02 TBD 2010 Rev. A...
  • Page 3 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...
  • Page 4 Section 6 6-1 through 6-2 Section 7 7-1 through 7-2 Appendix A A-1 through A-2 Appendix B B-1 through B-10 Appendix C C-1 through C-6 Appendix D D-1 through D-40 Page B GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 5 Perchlorate Material – special handling may apply, See www.dtsc.ca.gov./hazardouswaste/perchlorate. WARNING This product contains a Lithium battery that must be recycled or disposed of properly. Battery replacement and removal must be performed by professional services. GTN 725/750 TSO Installation Manual Page i 190-01007-02 Rev. A...

  • Page 6: Table Of Contents

    GPS Antenna Location......................2-7 2.4.2 COM Antenna Location .......................2-8 2.4.3 VOR/LOC Antenna Location.....................2-10 2.4.4 Glideslope Antenna Location.....................2-10 2.4.5 Electrical Bonding......................2-10 2.4.6 Interference of GPS......................2-10 Mounting Considerations .......................2-11 Cabling and Wiring Considerations ..................2-11 Page ii GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 7 4.3.13 COM Audio (GTN 750 only).....................4-23 4.3.14 COM Discrete Inputs ......................4-24 4.3.15 VOR/ILS Indicator (GTN 750 only)..................4-25 4.3.16 RMI/OBI (GTN 750 only) ....................4-27 4.3.17 DME Tuning (GTN 750 only) ...................4-28 GTN 725/750 TSO Installation Manual Page iii 190-01007-02 Rev. A...
  • Page 8 Autopilot Flight Check.......................5-33 5.7.6 TAWS Audio Flight Check (TAWS-equipped Units Only) ..........5-33 Database Check ........................5-33 Data Card Replacement ......................5-34 5.10 Software Loading ........................5-34 5.11 System Setup ..........................5-34 5.12 Documentation Checks......................5-34 Page iv GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 9 B.2.5 ARNAV/EI Fuel Flow Sentence ..................B-6 B.2.6 Shadin Fuel/Air Data Computer Sentence ................B-7 Appendix C MECHANICAL DRAWINGS ..................C-1 Drawing List..........................C-1 Appendix D INTERCONNECT DIAGRAMS..................D-1 Drawing List..........................D-1 GTN 725/750 TSO Installation Manual Page v 190-01007-02 Rev. A...
  • Page 10 Figure C-4. GTN Recommended Panel Cutout Dimensions ..............C-6 Figure D-1. GTN System Interface Diagram...................D-3 Figure D-2. GTN 750 Typical Installation....................D-4 Figure D-3. GTN 725 Typical Installation....................D-6 Figure D-4. GTN Power Lighting Configuration Interconnect ...............D-8 Figure D-5. GTN – Antenna Interconnect .....................D-10 Figure D-6.
  • Page 11 Table 3-4. Socket Contact Part Numbers....................3-6 Table 5-1. GTN Post-Installation Checkout Log ..................5-35 LIST OF TABLES Table B-1. Type 1 Output Sentence Format .................... B-2 Table B-2. Type 2 Output Sentence Format .................... B-4 GTN 725/750 TSO Installation Manual Page vii 190-01007-02 Rev. A...
  • Page 12 GTN 725/750 HARDWARE MOD LEVEL HISTORY The following table identifies hardware modification (Mod) Levels for the GTN 725 and GTN 750. Mod Levels are listed with the associated service bulletin number, service bulletin date, and the purpose of the modification. The table is current at the time of publication of this manual (see date on front cover) and is subject to change without notice.

  • Page 13: General Description

    10 WATT UNIT Equipment Description The GTN 725 is a GPS/WAAS unit that meets the requirements of TSO-C146a (specified in Table 1-4) and may be approved for IFR en route, terminal, non-precision, and precision approach operations. The GTN 750 includes all the features of the GTN 725 and includes an airborne VHF communications transceiver and airborne VOR/LOC and glideslope receivers.

  • Page 14: Technical Specifications

    11.25 in. (286 mm) face of aircraft panel to rear of connector backshells) GTN 725 Weight (Unit only) GTN 725 Weight (With rack and back plate) GTN 750 Weight (Unit only) 7.50 lbs (3.40 kg) GTN 750 Weight (With rack and back plate) 9.16 lbs (4.15 kg)

  • Page 15: Gps Specifications

    1 PPS (Pulse Per Second) Datum WGS-84 SATCOM compatibility is dependent upon antenna selection. SATCOM Compatibility See Section for additional information. Antenna Power Supply 35 mA typical, 40 mA max at 4.7 VDC GTN 725/750 TSO Installation Manual Page 1-3 190-01007-02 Rev. A...

  • Page 16: Com Specifications (Gtn 750 Only)

    60 dB BW is less than ±22 kHz for 25 kHz channeling. Selectivity 6 dB BW is greater than ±3.5 kHz for 8.33 kHz channeling. 60 dB BW is less than ±7.37 kHz for 8.33 kHz channeling. Page 1-4 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 17: Vor Specifications (Gtn 750 Only)

    1020 Hz Ident Tone is at least 20 dB down in voice mode. The distortion in the receiver audio output does not exceed 10% at Audio Distortion all levels up to 100 mW. GTN 725/750 TSO Installation Manual Page 1-5 190-01007-02 Rev. A...

  • Page 18: Glideslope Specifications (Gtn 750 Only)

    GTN 750 Main Connector 1.123 A COM Connector 470 mA (RX) 220 mA (RX) 5.16 A (TX:10W) 2.04 A (TX:10W) 6.93 A (TX:16W) 2.73 A (TX:16W) NAV Connector 308 mA Page 1-6 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 19: Gps Antenna Requirements

    [2] The GPS/WAAS connector is a TNC type. The VHF connector is a BNC type. [3] Installation of this antenna is not covered by the Garmin GA Antenna AML STC SA01695SE. [4] The GPS/WAAS connector is a TNC type. The XM connector is a TNC type. The VHF connector is a BNC type.

  • Page 20: License Requirements

    The Telecommunications Act of 1996, effective February 8, 1996, provides the FCC discretion to eliminate radio station license requirements for aircraft and ships. The GTN 725 and GTN 750 installations must comply with current transmitter licensing requirements. In the US, to find out the specific details on whether a particular installation is exempt from licensing, please visit the FCC web site http://wireless.fcc.gov/aviation.

  • Page 21: Regulatory Compliance

    Navigation Equipment using the GPS ● ● TSO-C146c DO-160E DO-229D Augmented by the Satellite Based Augmentation System ● ● TAS Airborne Equipment TSO-C147 DO-160D DO-197A ● ● TAWS TSO-C151b DO-160E TSO-C151b GTN 725/750 TSO Installation Manual Page 1-9 190-01007-02 Rev. A...

  • Page 22: Table 1-5. Main Software Part Number And Version

    Unauthorized changes or modifications to any GTN unit product may void the compliance to required regulations and authorization for continued equipment usage. All GTN unit functions are design approved under the TSO. Page 1-10 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 23: Tso Deviations

    Product Type, TSO Numbers, Equipment Class, “Dev” (deviation), Environmental Categories, Date of Manufacture, weight and Software Part Number. 1. Garmin was granted a deviation from TSO-C139 not to furnish each person receiving a GTN 725/750 copies of the data in Paragraph 5.l of the TSO.

  • Page 24: Database Options And Updates

    (TAWS) and the standard configured GTN providing terrain functionality is available for updating on periodic cycles and is available from Garmin. TAWS/Terrain database updates can be accomplished by replacing or reprogramming the database card and inserting the updated card in the card slot on the unit front panel.

  • Page 25: Limited Warranty

    Garmin in lieu of repair. Within the applicable period, 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, provided that the customer shall be responsible for any transportation cost.
  • Page 26 This page intentionally left blank Page 1-14 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 27: Installation Overview

    (FA) and hold-to-altitude (HA) leg types. If no barometric altitude data is provided to the GTN, FA and HA legs must be manually sequenced. GTN 725/750 TSO Installation Manual Page 2-1 190-01007-02 Rev. A...

  • Page 28: Ifr Vor/Loc/Glideslope Installation

    3. ARINC 429 GDU 4. ARINC 429 EFIS/ADC 5. ARINC 429 Data Concentrator 6. ARINC 429 Traffic Advisory System 7. RS-232 Shadin Fuel and ADC 8. RS-232 Shadin Altitude or Icarus Altitude Page 2-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 29: Multiple Baro-Corrected Altitude Sources

    7. ARINC 429 label 320 from INS/IRU, corrected for local magnetic variation 8. ARINC 429 label 320 from Airdata/AHRS, corrected for local magnetic variation 9. ARINC 429 label 320 from Garmin GAD 42, corrected for local magnetic variation 10. ARINC 429 label 320 from Sandel EHSI, corrected for local magnetic variation 11.

  • Page 30: Multiple Indicated Airspeed Sources

    3. ARINC 429 label 210 from Garmin GDU 4. ARINC 429 label 210 from EFIS/Airdata 5. ARINC 429 label 210 from Garmin GAD 42 6. ARINC 429 label 210 from Data Concentrator 7. RS-232 bus from Shadin Fuel and Air Data Computer 2.3.6...

  • Page 31: Gps Course Select Sources

    3. ARINC 429 label 100 from EFIS/Airdata 4. ARINC 429 label 100 from Sandel EHSI 5. ARINC 429 label 100 from Garmin GAD 42 6. ARINC 429 label 100 from Data Concentrator 7. TO/FROM course from the appliance's Omni-Bearing Selector (OBS) control 2.3.8...

  • Page 32: Joystick Waypoint Data

    3. ARINC 429 labels 306 and 307 from EFIS/Airdata 4. ARINC 429 labels 306 and 307 from Radar Graphics 5. ARINC 429 labels 306 and 307 from Garmin GAD 42 6. ARINC 429 labels 306 and 307 from Data Concentrator...

  • Page 33: Antenna Considerations

    Structural substantiation for mounting of antennas is beyond the scope of the GTN AML STC. For mounting the GA GPS/WAAS antenna, refer to Garmin GA Antenna AML STC SA01695SE or other FAA approved data. For mounting the COM and NAV antennas, refer to the aircraft manufacturer’s data.

  • Page 34: Com Antenna Location

    If simultaneous use of two COM transceivers is desired (split-COM or simul-comm), use of the TX interlock function is mandatory. In addition, the COM antennas should be spaced for maximum isolation. A configuration of one topside antenna and one bottom side antenna is recommended. Page 2-8 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 35: Figure 2-1. Gps Antenna Installation Considerations

    Figure 2-1. GPS Antenna Installation Considerations GTN 725/750 TSO Installation Manual Page 2-9 190-01007-02 Rev. A...

  • Page 36: Vor/Loc Antenna Location

    Locate the GTN as far as possible from all COM antennas. If a COM antenna is found to be the problem, a 1.57542 GHz notch filter (Garmin P/N 330-00067-00) may be installed in the VHF COM coax, as close to the COM as possible. This filter is not required for the GTN transmitter.

  • Page 37: Mounting Considerations

    After reconfiguring the avionics in the cockpit panel, if the GTN unit is mounted less than 12 inches from the compass, recalibrate the compass and make the necessary changes for noting correction data. GTN 725/750 TSO Installation Manual Page 2-11 190-01007-02 Rev.
  • Page 38 This page intentionally left blank Page 2-12 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 39: Table 3-1. Catalog Part Numbers

    115-01294-00 Connector Kit 011-02326-00 GTN 725 Back Plate Assembly 011-02246-00 Product Information Kit K00-00488-00 Mounting Rack 115-01294-00 Connector Kit 011-02326-02 GTN 750 Back Plate Assembly 011-02246-02 Product Information Kit K00-00488-00 GTN 725/750 TSO Installation Manual Page 3-1 190-01007-02 Rev. A...

  • Page 40: Optional Accessories

    GPS Antenna Options For details regarding antenna selection, refer to Section 1.3.8. Once the antenna type is decided upon, refer to the information below for detailed parts information for antennas available directly from Garmin. Contact manufacturer directly for information on other antennas.

  • Page 41: Database Options

    Connector, BNC, Male, Clamp 330-00087-00 GPS 1.57542 GHz Notch Filter 330-00067-00 Optional Reference Material ITEM GARMIN P/N GTN 725/750 Pilot’s Guide 190-01007-03 GTN 725/750 Cockpit Reference Guide 190-01007-04 GTN 725/750 Training CD GTN 725/750 TSO Installation Manual Page 3-3 190-01007-02 Rev. A...

  • Page 42: Installation Materials Required But Not Provided

    9507 9502-3 M81969/1-04 ITT Cannon 995-0001-584 995-0001-739 601966-1 601966-6 91067-1 Daniels AFM8 Astro 615717 615725 NOTE Insertion/extraction tools from ITT Cannon are all plastic; others are plastic with metal tip. Page 3-4 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 43: Cable Installation

    Contacts for the 25-, 44-, and 78-pin connectors must be crimped onto the individual wires of the aircraft wiring harness. The following table lists contact part numbers (for reference). See Table 3-3 for recommended crimp tools. GTN 725/750 TSO Installation Manual Page 3-5 190-01007-02...

  • Page 44: Table 3-4. Socket Contact Part Numbers

    (indenter setting of ‘4’). [2] Contacts listed are not to be used for configuration module wiring. Use the contacts supplied with the configuration module when installing configuration module wires in P1001. Page 3-6 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 45: Equipment Mounting

    Whenever the GTN unit is removed or reinstalled, verify that the unit power-up self-test sequence is successfully completed and no failure messages are annunciated. Section outlines the power-up self- test sequence. GTN 725/750 TSO Installation Manual Page 3-7 190-01007-02 Rev. A...

  • Page 46: Antenna Installation And Connections

    VHF COM transceiver to reduce or eliminate the harmonic interference. A notch filter for this use (P/N 330-00067-00) is available from Garmin. If a VHF COM transmitter causes problems with the GPS on the selected frequencies as listed in the post- installation checkout, the problem may be due to the ELT.

  • Page 47: Com Antenna

    It is recommended that the installer use RG-142B, RG-400 or equivalent 50Ω coax for the NAV antenna(s). The GTN has a single VOR/LOC/Glideslope input requiring some installations to use a standard external diplexer or triplexer. See Section TBD. GTN 725/750 TSO Installation Manual Page 3-9 190-01007-02 Rev. A...
  • Page 48 This page intentionally left blank Page 3-10 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 49: System Interconnects

    MAIN VERTICAL SUPERFLAG OUT WAYPOINT ANNUNCIATE* TERMINAL ANNUNCIATE* TAWS AUDIO ACTIVE OUT* AUDIO INHIBIT IN* TAWS INHIBIT IN* AIR/GROUND* CDI SOURCE SELECT* MAIN OBS STATOR E (GND) MAIN OBS STATOR F GTN 725/750 TSO Installation Manual Page 4-1 190-01007-02 Rev. A...
  • Page 50 MAIN LATERAL +RIGHT OUT MAIN LATERAL -FLAG OUT MAIN VERTICAL -FLAG OUT TERRAIN WARNING ANNUNCIATE* TERRAIN NOT AVAILABLE ANNUNCIATE* TERRAIN CAUTION ANNUNCIATE* GPS SELECT* TRAFFIC TEST* TRAFFIC STANDBY* AIRCRAFT GND AIRCRAFT GND Page 4-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 51: P1002 Connector

    ETHERNET OUT 2A ETHERNET OUT 2B RS-422 IN A RS-422 IN B RS-422 OUT A RS-422 OUT B ETHERNET IN 3A ETHERNET IN 3B ETHERNET OUT 3A ETHERNET OUT 3B GTN 725/750 TSO Installation Manual Page 4-3 190-01007-02 Rev. A...

  • Page 52: P1003 Com Connector

    COM REMOTE TUNE DOWN* AIRCRAFT POWER RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED AIRCRAFT GND AIRCRAFT GND SPEAKER GND (function not currently implemented) AIRCRAFT GND RESERVED RESERVED AIRCRAFT POWER AIRCRAFT POWER Page 4-4 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 53: P1004 Nav Connector

    PAR DME 100KHZ-A/SERIAL DME HOLD GLIDESLOPE SUPERFLAG PAR DME 100KHZ-B PAR DME 100KHZ-C DME COMMON PAR DME 100KHZ-D PAR DME 50KHZ SERIAL DME - DME REQUEST In/Out PAR DME 1MHZ-A PAR DME 1MHZ-B GTN 725/750 TSO Installation Manual Page 4-5 190-01007-02 Rev. A...
  • Page 54 AIRCRAFT GND RESERVED AIRCRAFT POWER AIRCRAFT POWER GLIDESLOPE -FLAG PAR DME 100KHZ-E GLIDESLOPE +DOWN PAR DME 1MHZ-E RESERVED GLIDESLOPE COMPOSITE OUT VOR/LOC DIGITAL AUDIO OUT AIRCRAFT GND AIRCRAFT GND AIRCRAFT GND Page 4-6 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 55: I/O Board

    SYNCHRO REF HIGH ARINC 429 IN 3A ARINC 429 IN 4A RESERVED ARINC 453/708 TERM 1A (function not currently implemented) RESERVED ARINC 453/708 TERM 2A (function not currently implemented) RESERVED RESERVED GTN 725/750 TSO Installation Manual Page 4-7 190-01007-02 Rev. A...
  • Page 56 SPARE INPUT 1 SYNCHRO VALID INPUT (ACTIVE HI) RESERVED SYNCHRO Z RESERVED RESERVED RESERVED ARINC 453/708 IN 1B (function not currently implemented) RESERVED ARINC 453/708 IN 2B (function not currently implemented) Page 4-8 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 57: Power, Lighting, And Antennas

    Connector GPS/WAAS ANTENNA P1006 COM ANTENNA P1007 NAV ANTENNA P1008 The GPS/WAAS, COM, and NAV antennas use BNC coaxial connectors on the connector backplate. Reference Figure for splitter/diplexer block diagrams. GTN 725/750 TSO Installation Manual Page 4-9 190-01007-02 Rev. A...

  • Page 58: Serial Data

    If a GTN is installed with a 400W or 500W Series in an aircraft, any of the RS-232 ports on the GTN may be cross-connected to RS-232 Port 3 on the GTN to manually transfer user-defined waypoints between the two units. Page 4-10 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 59 ● ● ● ● ● ● ● Wind Speed ● ● ● ● ● ● ● Wind Angle (True) ● ● ● ● ● ● ● Magnetic Heading ● ● ● ● ● ● ● GTN 725/750 TSO Installation Manual Page 4-11 190-01007-02 Rev. A...
  • Page 60 The labels recognized on the ARINC 429 IN ports depend on the configuration (see Section TBD). 4.3.4.1.3 ARINC 453/708 The GTN can receive ARINC 453/708 weather radar data from specific weather radars. For more information, refer to Section TBD. Page 4-12 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 61 ARINC 429 IN 4A P1005 ARINC 429 IN 4B P1005 The ARINC 429 outputs conform to ARINC 429 electrical specifications when loaded with up to five standard ARINC 429 receivers. GTN 725/750 TSO Installation Manual Page 4-13 190-01007-02 Rev. A...
  • Page 62 P1005-40 and P1005-19 for port 1. This jumper adds resistance of approximately 75Ω between P1005-18 and P1005-60. Page 4-14 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 63: Ethernet (Hsdb)

    GTN units that are equipped with TAWS. Pin Name Connector AUDIO OUT HI P1001 AUDIO OUT LO P1001 The audio output will be 80 mW across a 500Ω load. GTN 725/750 TSO Installation Manual Page 4-15 190-01007-02 Rev. A...

  • Page 64: Main Indicator

    The Flag outputs are capable of driving up to three 1000 meter loads. When valid information is present (Flag OUT OF VIEW) the Flag output is 375 ±80 mV DC. When invalid information is present (Flag IN VIEW) the Flag output is 0 ±25 mV DC. Page 4-16 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 65: Obs

    The OBS MODE SELECT discrete input may be used to toggle between GPS OBS and GPS AUTO modes of operation. A momentary low on this pin performs the same function as pressing the ‘OBS’ button on the GTN display. GTN 725/750 TSO Installation Manual Page 4-17 190-01007-02...
  • Page 66 There are two SYNCHRO VALID INPUTs; one is active-high and the other is active-low. Unless one of the two input is active, the GTN considers the synchro heading input to be invalid. Page 4-18 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 67: Discrete Outputs

    10 seconds. 4. When a user arrival alarm is not set and the aircraft is within 10 seconds of reaching the arrival waypoint, the waypoint annunciator flashes. GTN 725/750 TSO Installation Manual Page 4-19 190-01007-02...
  • Page 68 The TERRAIN NOT AVAILABLE ANNUNCIATE is active when TAWS on the GTN is enabled but not available. 4.3.10.14 TERRAIN CAUTION ANNUNCIATE* The TERRAIN CAUTION ANNUNCIATE is active when a TAWS caution is active on the GTN. Page 4-20 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 69: Heading Synchro

    A reference voltage must be provided if the synchro heading input is used. This input should be 26 VAC 400 Hz (nominal) and provided by the same source that provides the excitation voltage to the synchro heading source. GTN 725/750 TSO Installation Manual Page 4-21 190-01007-02...

  • Page 70: Composite Video (Function Not Currently Implemented)

    Luminance or luma (black and white) also called “monochrome NTSC” or RS-170, is the standard black and white format which contains both image and timing information. Chrominance or chroma (color) encoding system Page 4-22 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 71: Com Audio (Gtn 750 Only)

    AUX AUDIO LINE LEVEL GND P1003 AUX AUDIO SIGNAL LEVEL HI P1003 AUX AUDIO SIGNAL LEVEL GND P1003 The AUX AUDIO inputs can be used to mix external audio into the COM Audio. GTN 725/750 TSO Installation Manual Page 4-23 190-01007-02 Rev. A...

  • Page 72: Com Discrete Inputs

    A momentary low on this pin will load the previous preset frequency in the list into the standby COM frequency field. 4.3.14.6 INTERCOM ENABLE* (GTN 750 only) The INTERCOM ENABLE discrete input activates the intercom function in installations in which no intercom is present. Page 4-24 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 73: Vor/Ils Indicator (Gtn 750 Only)

    Left/Right, TO/FROM, and Flag indications of certain navigation indicators that contain an internal converter. The ILS ENERGIZE output goes low when the VLOC frequency is channeled to a localizer channel. GTN 725/750 TSO Installation Manual Page 4-25 190-01007-02...
  • Page 74 OBS STATOR D and VOR OBS STATOR F are each phase and amplitude shifted version of the VOR ROTOR C output. Each pair is intended to read one of the two windings of the indicator’s OBS stator. Page 4-26 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 75: Rmi/Obi (Gtn 750 Only)

    The output driver is active low. The driver output voltage is not more than 1.0 V when sinking 20 mA. The maximum off state leakage current with respect to ground is less than 10 A. GTN 725/750 TSO Installation Manual Page 4-27 190-01007-02 Rev.

  • Page 76: Dme Tuning (Gtn 750 Only)

    11-33 VDC. DME COMMON must be pulled low to indicate to the GTN 650/750 that it is the device channeling the DME. Page 4-28 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 77: Post Installation Configuration And Checkout Procedures

    Always refer to the Master Drawing List (005-00533-C0) for the correct software versions and part numbers. GTN 725/750 TSO Installation Manual Page 5-1 190-01007-02...

  • Page 78: Connector Engagement Check

    With the GTN turned off, press and hold the Home key and turn the unit on. Release the Home key when the display activates and ‘Garmin’ appears fully lit on the screen. The first page displayed is the configuration mode home page. See Figure 5-1. While in configuration mode, pages can be selected by touching the desired button on the display.

  • Page 79: Main Arinc 429 Config Page

    Select the correct Data In and Data Out settings for each port. Touch the UP or DOWN button to scroll through the ARINC selections. The data selections are described below. Figure 5-3. Main ARINC 420 Configuration Page GTN 725/750 TSO Installation Manual Page 5-3 190-01007-02...
  • Page 80 Heading, altitude, temperature, and speed information from an Air Data/AHRS Airdata/AHRS system. Garmin and Garmin w/TIS This is a Garmin data concentration format. Only high speed ARINC 429 Data Concentrator should be used. Garmin GTX 330 Selected course, heading, and joystick waypoint information from the following...
  • Page 81 ARINC 429 data as defined by the GAMA General Aviation Subset, 2nd Edition. The output data includes navigation and flight plan information to the GAMA 429 Sextant following EFIS systems: Sextant SMD 45 [1] Garmin GTX 330 will work with any output setting Selection Description RX: Accepts all 429 inputs Common TX: Generates all 429 outputs with SDI = 0.

  • Page 82: Main Rs-232 Config Page

    Shadin 91053XM Digital Fuel Management System Shadin Fuel Shadin 91204XM Digital Fuel Management System JP Instruments EDM-700 or EDM-760 Engine Monitor WX-500 Lightning strike information from an L3 Communications WX-500 Stormscope. Page 5-6 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 83 CHANNEL OUTPUT SELECTIONS Selection Description No unit(s) connected to output of this channel. Serial communication to Garmin GTX 33/330 ES or 33D/330D ES ADS-B Transponders. Serial position, altitude, velocity, and navigation data to the following units: Argus 3000, 5000, or 7000 Moving Map Electronics International FP-5L Fuel Flow Computer (non-TSO’d)

  • Page 84: Hsdb (Ethernet) Configuration Page

    Setup page. Touch the button next to the port to configure it as ‘Connected’ or ‘Not Connected’. See Figure 5-5. If a Garmin LRU is connected to a specific Ethernet port, then configure the port as ‘Connected’. If no LRU is connected to the port, configure it as ‘Not Connected’.

  • Page 85: Main Cdi Indicator (Analog) Configuration Page

    Whenever vertical deviation is invalid the vertical deviation bar parks in Normal the centered position and the vertical flag is shown. GTN 725/750 TSO Installation Manual Page 5-9 190-01007-02 Rev. A...

  • Page 86: Lighting Configuration Page

    The minimum display and key brightness default level is set to 5.00% at the factory. Enter the desired minimum value on the keypad and then touch ENTER to store the settings. Page 5-10 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 87 When a lighting bus is used to control the lighting of the display, this parameter sets the point on the lighting bus control below which the display brightness tracks the GTN’s photocell. This field has a range of 0 (zero) to 50, and is set to 25 as the default setting. GTN 725/750 TSO Installation Manual Page 5-11 190-01007-02...

  • Page 88: Audio Configuration Page

    0% being muted and 100% being max volume. The selected volume level can be checked by selecting ‘Test Sound’ and then touching the green triangle to the right of the button. Figure 5-11. Audio Configuration Page Page 5-12 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 89: Traffic Configuration Page

    0.0 to 99.9 feet. FUEL TYPE This configures the type of fuel the aircraft uses. Options are AV Gas, Jet A, or Jet B. GPS SELECT Figure 5-13. Main System Configuration Page ???? GTN 725/750 TSO Installation Manual Page 5-13 190-01007-02 Rev. A...

  • Page 90: Com Configuration Page (Gtn 750 Only)

    This parameter sets the audio sidetone output level. This value may be set to values between 0.0 dB and 63.0 dB in 0.5 dB increments. The default is Figure 5-15. COM Configuration Page Page 5-14 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 91: Vor/Loc/Gs Configuration Page

    1 of that DME is tuned. “Directed freq 1” should be selected if a single-channel ARINC 429 DME is to be tuned. If the GTN is connected to a multi-channel ARINC 429 DME, channel Directed freq 2 2 of that DME is tuned. GTN 725/750 TSO Installation Manual Page 5-15 190-01007-02 Rev. A...
  • Page 92 Shifted BCD (Binary Coded Decimal) parallel DME tuning Parallel slip Slip-code parallel DME tuning 2 of 5 parallel DME tuning, compatible with the following DME units: Narco DME 890 Narco 890/891 Narco DME 891 ARC (Cessna) RTA-476A Page 5-16 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 93: Ground Checks (Configuration Mode)

    3. For each external switch that is connected, exercise the switch and check the ‘active’ or ‘inactive’ indication on the screen correlating to the appropriate switch input, and ensure it is displayed correctly. GTN 725/750 TSO Installation Manual Page 5-17 190-01007-02...

  • Page 94: Discrete Outputs Checkout

    5.5.5 HSDB Provisional Wiring Checkout If provisional wiring has been installed for the GTS 8XX, GDU 620, or other Garmin LRU to interface via HSDB, follow the procedure below to ensure it has been installed correctly. 1. Access the GTN Diagnostics page from the Configuration Mode home page.

  • Page 95: Taws Audio Check (For Units With Taws Only)

    Vmo). 4. Readjust the Volume as needed to ensure the TAWS audio messages will be heard in all anticipated cockpit noise conditions. Figure 5-19. GTN Audio Configuration Page GTN 725/750 TSO Installation Manual Page 5-19 190-01007-02 Rev. A...

  • Page 96: Gad 42 Interface Check

    GTN. Verify that the Source Input Level value displayed on the configuration screen tracks the lighting bus setting. Continue to maximum brightness and verify proper operation. Figure 5-21. Lighting Bus Configuration Page Page 5-20 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 97: Ground Checks (Normal Mode)

    Roll Steering (if applicable) commands 5° right bank for 5 seconds; commands decreasing right bank at 1°/second for 5 seconds, until command is 0° bank again. This cycle repeats continuously. GTN 725/750 TSO Installation Manual Page 5-21 190-01007-02 Rev. A...

  • Page 98: Signal Acquisition Check

    NOTE It is known that certain non-aviation radios, including marine transceivers, can interfere with civil aviation navigation and surveillance equipment including the Garmin GTN. When installing GTN equipment, it is the responsibility of the installer to ensure that the GTN modification is compatible with all previous aircraft modifications. Garmin...
  • Page 99 (if position is lost, the status on the GPS Status page will change to “ACQUIRING”). If the GPS “INTEG” flag comes into view, see for options to improve performance. GTN 725/750 TSO Installation Manual Page 5-23 190-01007-02 Rev. A...

  • Page 100: Vhf Nav Checkout (Gtn 750 Only)

    The aural message “TAWS System Failure” will be annunciated if the TAWS system is NOT functioning properly. If no audio message is heard, then a fault exists within the audio system and the TAWS capability must be considered non-functional. Page 5-24 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 101: Altitude Encoder Or Air Data Computer Check

    HDG field displays valid heading data. 5. Remove power from the heading source and verify that the heading in the BRG field is dashed out. Figure 5-22. Map Menu Page GTN 725/750 TSO Installation Manual Page 5-25 190-01007-02 Rev. A...

  • Page 102: Interface Checkout

    6. Select VLOC on the GTN and verify that the SN3308 displays NAV 1 or NAV 2 (depending on what navigation source the GTN is). 7. Using a VOR test set verify that the CDI deviation on the SN3308 is displayed correctly. Page 5-26 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 103 3. While the GTN is displaying the self test page, verify that the SN3500/4500 is displaying data from the GPS source. Course Deviation: Half-scale left deviation, TO indication, flag pulled Vertical Deviation: Half-scale up deviation, flag pulled Active Waypoint: GARMN GTN 725/750 TSO Installation Manual Page 5-27 190-01007-02 Rev. A...
  • Page 104 5.6.9.5 ARINC 429 Traffic System Interface Check If a Garmin GTS 8XX Traffic system, L3 Communications SKY497/SKY899 SkyWatch® sensor or a Honeywell (Bendix/King) KTA 810 TAS/KMH 820 IHAS has been connected to the GTN via ARINC 429, the traffic interface should be verified as described in this section.
  • Page 105 Using the Self Test selection under the Lightning Menu, initiate a Stormscope self-test. 5.6.9.8 GMX 200/MX20 Interface Check If a Garmin GMX 200 or MX20 has been connected to the GTN, the interface should be verified as described in this section. 1. Ensure that the GTN has a 3-D fix.
  • Page 106 6. If the Main OBI Output is configured to output “Always GPS,” select VLOC on the CDI and verify that the RMI needle still points towards the GPS waypoint selected. Page 5-30 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 107: Magnetic Compass Check

    GDU 620 (G500/G600) Interface Check 5.6.10 Magnetic Compass Check A Compass swing should be carried out at completion of installation in accordance with AC 43.13-1B, chapter 12, section 3, paragraph 12-37. GTN 725/750 TSO Installation Manual Page 5-31 190-01007-02 Rev. A...

  • Page 108: Flight Checks

    6. Record accuracy in System Log (see manual). It may be required by the governing regulatory agency to verify operation of the VOR receiver at the extents of a ground facility’s service volume (e.g., FAA AC 23-8A). Page 5-32 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 109: Ils Flight Check (Gtn 750)

    3. Verify that the expiration date displayed has not passed. If the database has expired, then remove and replace the navigation database card as described in the following section, and see Section 5.9. GTN 725/750 TSO Installation Manual Page 5-33 190-01007-02...

  • Page 110: Data Card Replacement

    Airworthiness (ICAW) is completed and inserted in the aircraft permanent records. Fill in the Aircraft Make, Model, Reg. No. and S/N information on the cover of the ICAW (Garmin document TBD) Insert the completed ICAW in the aircraft permanent records.

  • Page 111: Configuration And Checkout Log

    Sel Crs Drive: _____ TAS Input: _____ GPS SELECT: Auto Prompt Main RMI/OBI: _____ GPS/NAV 429 L/H: _____ COM PRESETS [ N/A]: Enabled Disabled Heading 429 L/H: _____ GAD SW Ver: _____________ GTN 725/750 TSO Installation Manual Page 5-35 190-01007-02 Rev. A...
  • Page 112 N/A] Terrain Not Available (TER N/A) N/A] Remote CDI Select N/A] Terrain Test (TER TEST) N/A] Remote OBS Select N/A] Terrain Warning (TER WARN) N/A] Terrain Inhibit N/A] COM Remote Recall Page 5-36 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 113 VHF NAV CHECKOUT (GTN 750 ONLY) N/A] Ryan TCAD VOR reception checked N/A] L-3 Communications Stormscope Localizer reception checked N/A] Garmin GMX 200 / MX20 Deviation needle and flag checked N/A] Garmin GDL 69/69A N/A] Crossfill check VHF COM CHECKOUT (GTN 750 ONLY)
  • Page 114 This page intentionally left blank Page 5-38 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 115: Limitations

    The GPS/WAAS receiver is compatible with the GPS antennas listed in Section 1.3.8. Aircraft Radio Station License An aircraft radio station license is not required when operating in U.S. airspace, but may be required when operating internationally. GTN 725/750 TSO Installation Manual Page 6-1 190-01007-02 Rev. A...
  • Page 116 This page intentionally left blank Page 6-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 117: Periodic Maintenance

    GPS signal acquisition time will be increased. There is no loss of function or accuracy of the GTN with a dead battery. The battery is not user replaceable. To replace the battery, contact the Garmin repair station or factory authorized repair station.
  • Page 118 This page intentionally left blank Page 7-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 119: Appendix Aenvironmental Qualification Form

    Appendix A ENVIRONMENTAL QUALIFICATION FORM For RTCA/DO-160F Environmental Qualification Forms (EQFs) visit the Dealers Only site on http://www.garmin.com. The GTN 725 and GTN 750 use the same EQF, part number 005-00533-13. GTN 725/750 TSO Installation Manual Page A-1 190-01007-02 Rev. A...
  • Page 120 This page intentionally left blank Page A-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 121: Appendix Bgtn Data Format

    GTN (automatic magnetic heading, magnetic variation computed at last known position; true heading, magnetic variation of E00.0°; or user-defined magnetic heading, magnetic variation as entered by user). GTN 725/750 TSO Installation Manual Page B-1 190-01007-02...

  • Page 122: Table B-1. Type 1 Output Sentence Format

    * The altitude is not output if the RS-232 port is configured as “Avtn no alt”. * The line feed character is not output if the RS-232 port is configured as “Avtn no alt”. Page B-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 123: Output Sentence Type 2

    - sequence number (1 binary byte; last waypoint flag is set; route sequence number is 1) CR - ASCII carriage return character (0D hex) LF - ASCII line feed character (0A hex) GTN 725/750 TSO Installation Manual Page B-3 190-01007-02...

  • Page 124: Table B-2. Type 2 Output Sentence Format

    - latitude minutes (unsigned binary) - undefined hhhhhhh - hundredths of latitude minutes (unsigned binary) Two's complement binary in 16ths of degrees. mvar Easterly variation is positive. MSB output first. Page B-4 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 125: Gtn Rs-232 Fuel/Air Data Input Format

    The input signals are compatible with RS-232C. Data is input at 9600 baud with a word length of 8 bits, one stop bit, and no parity. One message is received per second. B.2.2 Shadin Altitude Sentence The Garmin GTN is capable of receiving the following 17-byte message from Shadin Altitude Encoders, Altitude Serializers, and Altitude Converters: RMS<sp><+/->12345T<+/->12ul<CR>...

  • Page 126: Shadin Fuel Flow Sentence

    B.2.4 Shadin Fuel Flow Sentence The Garmin GTN is capable of receiving the following 55-byte message from the Shadin Fuel Flow Indicator: <STX>K0543.2<sp>0100.0<sp>0040.0<sp>0060.0<sp>0123.4<sp>0045.4<sp>0078.0<sp>123<ETX> Where: <STX> start-transmit character (0x02) K units designation (i.e., Gallons, Liters, Kilograms, B[pounds]) 0543.2 total fuel remaining (i.e., ASCII-coded decimal format: 0x30, 0x35, 0x34, 0x33, 0x2e, 0x32) <sp>...

  • Page 127: Shadin Fuel/Air Data Computer Sentence

    B.2.6 Shadin Fuel/Air Data Computer Sentence The Garmin GTN is capable of receiving the following message strings from the Shadin Fuel/Air Data or Air Data Computer: SHADIN “z” FORMAT <STX> ZA012<CR><LF> "ZA" (ASCII characters); "012" represents indicated Air Speed (knots) ZB345<CR><LF>...
  • Page 128 The ASCII-coded decimal representation of that byte is given, ranging from 0 (0x30, 0x30, 0x30) to 255 (0x32, 0x35, 0x35). Page B-8 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 129 The ASCII-coded decimal representation of that byte is given, ranging from 0 (0x30, 0x30, 0x30) to 255 (0x32, 0x35, 0x35). GTN 725/750 TSO Installation Manual Page B-9 190-01007-02...
  • Page 130 This page intentionally left blank Page B-10 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 131: Appendix Cmechanical Drawings

    The following drawings are included in this section. Figure C-1. GTN Mounting Rack Dimensions Figure C-2. GTN Mounting Rack Installation Figure C-3. GTN Mounting Rack Assembly Figure C-4. GTN Recommended Panel Cutout Dimensions GTN 725/750 TSO Installation Manual Page C-1 190-01007-02 Rev. A...
  • Page 132 This page intentionally left blank Page C-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 133 Figure C-1. GTN Mounting Rack Dimensions GTN 725/750 TSO Installation Manual Page C-3 190-01007-02 Rev. A...
  • Page 134 Figure C-2. GTN Mounting Rack Installation Page C-4 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 135 Figure C-3. GTN Mounting Rack Assembly GTN 725/750 TSO Installation Manual Page C-5 190-01007-02 Rev. A...
  • Page 136 Figure C-4. GTN Recommended Panel Cutout Dimensions Page C-6 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 137: Appendix Dinterconnect Diagrams

    The following drawings are included in this section: Figure D-1. GTN System Interface Diagram Figure D-2. GTN 750 Typical Installation Figure D-3. GTN 725 Typical Installation Figure D-4. GTN Power Lighting Configuration Interconnect Figure D-5. GTN – Antenna Interconnect Figure D-6. GTN - Main Indicator Interconnect Figure D-7.
  • Page 138 This page intentionally left blank Page D-2 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 139 Figure D-1. GTN System Interface Diagram GTN 725/750 TSO Installation Manual Page D-3 190-01007-02 Rev. A...

  • Page 140: Figure D-2. Gtn 750 Typical Installation

    ESSENTIAL BUS AIRCRAFT POWER 51 22 AWG P1006 GPS/WAAS GPS/WAAS ANTENNA ANTENNA P1007 COM ANTENNA ANTENNA P1008 NAV ANTENNA ANTENNA Figure D-2. GTN 750 Typical Installation Sheet 1 of 2 Page D-4 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 141 Figure D-2. GTN 750 Typical Installation Sheet 2 of 2 GTN 725/750 TSO Installation Manual Page D-5 190-01007-02 Rev. A...

  • Page 142: Figure D-3. Gtn 725 Typical Installation

    Figure D-3. GTN 725 Typical Installation Sheet 1 of 2 Page D-6 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 143 Figure D-3. GTN 725 Typical Installation Sheet 2 of 2 GTN 725/750 TSO Installation Manual Page D-7 190-01007-02 Rev. A...

  • Page 144: Figure D-4. Gtn Power Lighting Configuration Interconnect

    FOR MORE DETAILS. 7. CIRCUIT BREAKER SHOULD BE LABELED AS SHOWN. 8. CIRCUIT BREAKER SHOULD BE LABELED AS: “GPS” FOR THE GTN 725, AND “NAV/GPS” FOR THE GTN 750 Figure D-4. GTN Power Lighting Configuration Interconnect Sheet 1 of 2...
  • Page 145 7. CIRCUIT BREAKER SHOULD BE LABELED AS SHOWN. 8. CIRCUIT BREAKER SHOULD BE LABELED AS: “GPS” FOR THE GTN 725, AND “NAV/GPS” FOR THE GTN 750. 9. TVS ASSEMBLY PROTECTION IS ONLY REQUIRED ON ONE GTN IN A DUAL NAV/COM INSTALLATION.

  • Page 146: Figure D-5. Gtn - Antenna Interconnect

    Figure D-5. GTN – Antenna Interconnect Sheet 1 of 3 Page D-10 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 147 Figure D-5. GTN – Antenna Interconnect Sheet 2 of 3 GTN 725/750 TSO Installation Manual Page D-11 190-01007-02 Rev. A...
  • Page 148 Figure D-5. GTN – Antenna Interconnect Sheet 3 of 3 Page D-12 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 149: Figure D-6. Gtn - Main Indicator Interconnect

    Figure D-6. GTN - Main Indicator Interconnect GTN 725/750 TSO Installation Manual Page D-13 190-01007-02 Rev. A...

  • Page 150: Figure D-7. Gtn - Autopilot Interconnect

    Figure D-7. GTN - Autopilot Interconnect Page D-14 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 151: Figure D-8. Gtn - Traffic Interconnect

    Figure D-8. GTN - Traffic Interconnect GTN 725/750 TSO Installation Manual Page D-15 190-01007-02 Rev. A...

  • Page 152: Figure D-9. Gtn - Transponder Interconnect

    Figure D-9. GTN - Transponder Interconnect Page D-16 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 153: Figure D-10. Dual Gtn To Single Gdu Interconnect

    Figure D-10. Dual GTN to Single GDU Interconnect GTN 725/750 TSO Installation Manual Page D-17 190-01007-02 Rev. A...

  • Page 154: Figure D-11. Gtn - Gdu/Ahrs Interconnect

    THAN 3.0". CONNECT OTHER SHIELD GROUNDS TO AIRCRAFT CHASSIS WITH AS SHORT A CONDUCTOR AS PRACTICAL. 4. FOR GTN 7XX CONFIGURATION SETTINGS, SEE SECTION TBD. Figure D-11. GTN - GDU/AHRS Interconnect Page D-18 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 155: Figure D-12. Gtn - Arinc 429 Efis Interconnect

    Figure D-12. GTN - ARINC 429 EFIS Interconnect Sheet 1 of 2 GTN 725/750 TSO Installation Manual Page D-19 190-01007-02 Rev. A...
  • Page 156 Figure D-12. GTN - ARINC 429 EFIS Interconnect Sheet 2 of 2 Page D-20 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 157: Figure D-13. Gtn - Gdl 69/69A Interconnect

    Figure D-13. GTN - GDL 69/69A Interconnect GTN 725/750 TSO Installation Manual Page D-21 190-01007-02 Rev. A...

  • Page 158: Figure D-14. Audio Panel Interconnect

    8. USE THE AUDIO ACTIVE OUT DISCRETE OUTPUT TO INHIBIT AURAL ALERTS FROM LOWER PRIORITY SYSTEMS WHENEVER THE GTN 7XX IS PLAYING AUDIO MESSAGES. Figure D-14. Audio Panel Interconnect Sheet 1 of 2 Page D-22 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 159 Figure D-14. Audio Panel Interconnect Sheet 2 of 2 GTN 725/750 TSO Installation Manual Page D-23 190-01007-02 Rev. A...

  • Page 160: Figure D-15. Air Data/Iru/Ahrs Rs-232 Interconnect

    Figure D-15. Air Data/IRU/AHRS RS-232 Interconnect Sheet 1 of 2 Page D-24 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...
  • Page 161 Figure D-15. Air Data/IRU/AHRS RS-232 Interconnect Sheet 2 of 2 GTN 725/750 TSO Installation Manual Page D-25 190-01007-02 Rev. A...

  • Page 162: Figure D-16. Air Data/Iru/Ahrs Arinc 429 Interconnect

    Figure D-16. Air Data/IRU/AHRS ARINC 429 Interconnect Page D-26 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 163: Figure D-17. Gad 42 Interconnect

    Figure D-17. GAD 42 Interconnect GTN 725/750 TSO Installation Manual Page D-27 190-01007-02 Rev. A...

  • Page 164: Figure D-18. Vor/Ils Indicator Interconnect

    Figure D-18. VOR/ILS Indicator Interconnect Page D-28 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 165: Figure D-19. Rmi Obi Interconnect

    THAN 3.0 ". CONNECT OTHER SHIELD GROUNDS TO AIRCRAFT CHASSIS WITH AS SHORT A CONDUCTOR AS PRACTICAL. 4. REFER TO MANUFACTURER’S DOCUMENTATION FOR COMPLETE PINOUT AND INTERCONNECT INFORMATION. Figure D-19. RMI OBI Interconnect GTN 725/750 TSO Installation Manual Page D-29 190-01007-02 Rev. A...

  • Page 166: Figure D-20. Gtn - Wx-500 Interconnect

    6. REFER TO MANUFACTURER’S DOCUMENTATION FOR COMPLETE PINOUT AND INTERCONNECT INFORMATION. PINOUTS OF OTHER UNITS SHOWN FOR REFERENCE ONLY. 7. ANY AVAILABLE ETHERNET PORT MAY BE USED. REFER TO FIGURE FOR HSDB ARCHITECTURE OPTIONS. Figure D-20. GTN – WX-500 Interconnect Page D-30 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 167: Figure D-21. Gtn 750 - Dme Interconnect

    5. THIS INTERCONNECT APPLIES ONLY WHEN IT IS DESIRED FOR A SEPARATE INDICATOR TO DISPLAY GTN 750 VOR/ILS INFORMATION REGARDLESS OF THE CDI BUTTON STATUS. Figure D-21. GTN 750 - DME Interconnect GTN 725/750 TSO Installation Manual Page D-31 190-01007-02...

  • Page 168: Figure D-22. Gtn 750 - Remote Dme Interconnect

    4. REFER TO MANUFACTURER’S DOCUMENTATION FOR COMPLETE PINOUT AND INTERCONNECT INFORMATION. 5. THE GTN 750 MUST BE CONFIGURED AT INSTALLATION TO OUTPUT DME TUNING DATA UNDER THE DME CHANNEL MODE. Figure D-22. GTN 750 – Remote DME Interconnect Page D-32 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 169: Figure D-23. Parallel 2 Of 5 Dme Tuning

    THAN 3.0". CONNECT OTHER SHIELD GROUNDS TO AIRCRAFT CHASSIS WITH AS SHORT A CONDUCTOR AS PRACTICAL. 4. REFER TO MANUFACTURER’S DOCUMENTATION FOR COMPLETE PINOUT AND INTERCONNECT. Figure D-23. Parallel 2 of 5 DME Tuning GTN 725/750 TSO Installation Manual Page D-33 190-01007-02...

  • Page 170: Figure D-24. Parallel Slip Code Dme Tuning Interconnect

    Figure D-24. Parallel Slip Code DME Tuning Interconnect Page D-34 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 171: Figure D-25. Heading Synchro Interconnect

    Figure D-25. Heading Synchro Interconnect GTN 725/750 TSO Installation Manual Page D-35 190-01007-02 Rev. A...

  • Page 172: Figure D-26. Gps Annunciator Interconnect

    Figure D-26. GPS Annunciator Interconnect Page D-36 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 173: Figure D-27. Nav Source Select Annunciator Interconnect

    Figure D-27. NAV Source Select Annunciator Interconnect GTN 725/750 TSO Installation Manual Page D-37 190-01007-02 Rev. A...

  • Page 174: Figure D-28. Taws Interconnect

    Figure D-28. TAWS Interconnect Page D-38 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

  • Page 175: Figure D-29. Switches Interconnect

    Figure D-29. Switches Interconnect GTN 725/750 TSO Installation Manual Page D-39 190-01007-02 Rev. A...
  • Page 176 This page intentionally left blank Page D-40 GTN 725/750 TSO Installation Manual Rev. A 190-01007-02...

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