GRT Avionics HXr Installation Manual

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HXr

Installation Manual

Revision A5

7-May-2015

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Page 1 Installation Manual Revision A5 7-May-2015...
Page 3 HXr Installation Manual FOREWORD Congratulations on your purchase of the GRT Avionics HXr! We are pleased that you have chosen our product to meet your flying needs. This manual describes installation of the GRT Hxr Electronic Flight Information System using the software version shown in the Record of Revisions.
Page 4 05-Mar-2015 05-Mar-2015 Appendix 20-Feb-2015 HXr systems shipped after 1/08/13 include updated wiring harnesses as described in the Appendix of Revision A2. Installers of all units shipped prior to this date should refer to the Horizon Cable Description documents, available from www.grtavionics.com/documents, for Connector A, B and...
Page 5: Table Of Contents
1.1 Introduction............................7 1.2 Certification............................7 1.3 System Description & Architecture....................7 1.4 Light Aircraft Avionics Primer......................8 1.5 HXr Accessories and Packing List....................11 SECTION 2: MECHANICAL INSTALLATION..................14 2.1 Display Unit Installation Considerations..................14 2.2 GADAHRS Installation........................14 2.2 Legacy Equipment - AHRS (Part No. AAS-) Installation............17 2.3 Legacy Equipment - Magnetometer Installation (for AHRS Part No.
Page 6 HXr Installation Manual GRT Avionics 3.8 Inter-Display Communication.......................23 3.9 Audio Tone Output........................23 3.10 Trim and Flap Servos and Sensors.....................24 SECTION 4: CHECK OUT & CALIBRATION..................25 4.1 Display Unit Check Out........................25 4.2 AHRS/Air Data Computer Test.....................25 4.3 Magnetometer Location Validation.....................26 4.4 Check Uncorrected Magnetic Heading..................26 4.5 Magnetometer Calibration Procedure..................27...
Page 7: Section 1: General Description
This document provides the physical, mechanical and electrical characteristics and installation requirements for the GRT HXr EFIS. This document, the HXr Set Up Guide and the HXr Users Guide make up the set of HXr user documentation. These documents, along with periodic software updates and other notices, are available at www.grtavionics.com under the Support menu.
Page 8: Light Aircraft Avionics Primer
RS-422, and USB ports. VOR/localizer data, traffic alerts, and in-flight weather are very common additions that are easily displayed on the EFIS screen. The HXr features the capability to mount the radio, transponder and engine monitor in a remote location to simplify the design of the instrument panel.
Page 9 Newer transponders can use serial data instead of Grey code, which vastly simplifies the wiring process. Because Grey code is rapidly becoming phased out in favor of serial data, the HXr does not support it. Serial Ports Serial ports are user defined, meaning that the aircraft builder can choose which devices use each port.
Page 10 EFIS USB port is easy to connect and transmits large amounts of data quickly. USB devices do not require you to program a baud rate. The HXr has two USB ports that may be used for two USB devices, or you may attach a USB hub to run up to three devices. Some ADS-B units, such as the Radenna Skyradar, offer USB data transmission.
Page 11: Hxr Accessories And Packing List
While this manual covers the very basics of EFIS wiring & communication and the GRT HXr-specific details, there are many very important safety aspects of aircraft wiring that we cannot even begin to discuss in this manual.
Page 12 There are a number of options for remotely mounted radios, transponders, ADS-B and XM Weather receivers that work with HXr. Because this list is constantly growing, please refer to the GRT website, www.grtavioncs.com, for the most current details about Compatible Equipment options. Some of them are available for purchase from GRT as part of your EFIS package.
Page 13 HXr Installation Manual GRT Avionics HXr EFIS Options Part Number Description GPS-H/E GRT External GPS Module GPS-RAIM-H/E RAIM GPS Module GPS-LPV TSO-C145c IFR GPS (Varies) Engine Monitor Package (EIS) XM-WEATHER XM Weather Receiver USB-EXT USB Extension Cable 1-13 Revision A5...
Page 14: Section 2: Mechanical Installation
EFIS when the canopy is closed. See the Appendix of this manual for HXr component mounting templates. The use of nut plates behind the instrument panel greatly simplifies the task of installing and removing the 6 screws used to retain the display unit in the panel.
Page 15 HXr Installation Manual GRT Avionics · Must not be exposed to water. The location · The routing of pitot/static lines to the ports on the unit. · The GADAHRS will revert to its internal magnetometer when neither the external magnetometer data nor GPS groound track data is available to it.
Page 16 GRT Avionics HXr Installation Manual Top - Forward, Connector - Right Top - Up, Connector - Aft Top - Up, Connector - Forward Top - Aft, Connector - Right Top - Left, Connector - Aft Top - Left, Connector – Forward Top - Right, Connector - Aft Top - Down, Connector –...
Page 17: Legacy Equipment - Ahrs (Part No. Aas-) Installation
Only one source of power should be provided to the magnetometer. If your panel includes a GRT Avionics Mini-EFIS with a battery backup, we recommend using the Mini-EFIS to power the magnetometer.
Page 18: Legacy Equipment - Magnetometer Installation (For Ahrs Part No. Aas-)
GRT Avionics HXr Installation Manual maintenance is required for the magnetometer, although it is desirable to mount it in a location that allows access to it if necessary. The most important consideration when mounting the magnetometer is choosing a location in the airplane that is away from magnetic disturbances. It is quite amazing how sensitive the magnetometer is to these disturbances, and how much error this can cause in the magnetic heading reported by the AHRS.
Page 19: Gsns (Gps) From The Adaptive Ahrs
GRT Avionics HXr Installation Manual Fig 2-1. AHRS to Mag Orientation (Applies to Legacy AHRS (Does not apply to adaptive AHRS). GSNS (GPS) from the Adaptive AHRS The GADAHRS can include an optional GPS receiver, or more accurately, a satellite navigation receiver.
Page 20: Cooling Considerations
Even a stand- alone unit operates at a higher temperature in still air than in moving air. The Horizon HXr contains an internal cooling fan. Be sure that there is adequate air available so that it can cool the display unit.
Page 21: General Guidelines
GRT Avionics HXr Installation Manual SECTION 3: WIRING CONSIDERATIONS 3.1 General Guidelines Wires that are certain to be used are pre-installed in the EFIS cable assembly connectors. Optional connections to the EFIS are not installed in the D-sub connectors at the factory, however, colored aviation-grade wires with pre-installed D-sub connector contacts are included for these connections.
Page 22: Ground Connections
HXr Installation Manual GRT Avionics are used for supplying power to the engine starter. This maximizes the current available for the starter, and may extend the life of the CCFL backlight in the display unit. The display units include internal thermally-activated fuses. This protects the equipment from internal electrical faults.
Page 23: Specific Equipment Interconnect Details
GRT Avionics HXr Installation Manual All magnetometer connections are made directly to the mating AHRS. This wiring includes the power connections necessary for the magnetometer to operate. Each AHRS and magnetometer pair is calibrated together for optimal accuracy, and thus this paring should be maintained.
Page 24: Trim And Flap Servos And Sensors
Flap & trim position indicators may be displayed on the EFIS screen using the analog inputs. Pull-up resistors for these sensors are provided internally in the HX and HXr systems; if used, they must be turned on in the Setup Menu. Use Trim/Flap Sensor Installation wiring diagram & notes in the Appendix of this manual for wiring and setup guidance.
Page 25: Section 4: Check Out & Calibration
4.2 AHRS/Air Data Computer Test 1. Verify that the serial ports to all AHRS units have been programmed into the EFIS. (Refer to the HXr Setup Guide for instructions to program serial ports.) 2. Apply power to display unit with internal AHRS.
Page 26: Magnetometer Location Validation
HXr Installation Manual GRT Avionics 4.3 Magnetometer Location Validation 1. Park the aircraft on a level surface and start the engine. 2. Press the MORE soft key on the EFIS display, then press the SET MENU soft key. Scroll to and select AHRS Maintenance.
Page 27: Magnetometer Calibration Procedure
HXr Installation Manual GRT Avionics If errors of greater than 30 degrees are observed, see section 4.3 to troubleshoot. 4.5 Magnetometer Calibration Procedure The magnetometer must be calibrated before the first flight of the aircraft. Magnetometer calibration is required to achieve accurate magnetic heading readings. This calibration corrects for errors induced by magnetic disturbances local to the sensor, such as ferrous metal objects.
Page 28 HXr Installation Manual GRT Avionics 9. If calibration is successful, the AHRS will re-start itself automatically, and begin using the corrections. While re-starting, the AHRS will not provide data. This will result in the AHRS data disappearing from the display unit for about 10 seconds.
Page 29 HXr Installation Manual GRT Avionics because it is dependent on how carefully the user performed these steps. The calibration data should be cross-checked with reliable ground references such as a compass rose or runway headings before flight. Congratulations! Magnetometer calibration is now complete.
Page 30: Arinc Checkout Procedure
HXr Installation Manual GRT Avionics 4.6 ARINC Checkout Procedure If the ARINC 429 input and/or outputs are wired, these interfaces must be verified. ARINC 429 Inputs Press the MORE soft key, then the SET MENU soft key and go to the "Display Unit Maintenance"...
Page 31: Section 5: Equipment Interconnect Details
Data may also be shared via the Inter-Display Unit Link, which allows the serial ports to be used for more devices. If more than two HXr displays are connected, it is necessary to use an ethernet hub.
Page 32: Usb Ports
GPS satellite, thus providing more assurance that the GPS position is accurate. A certified IFR GPS such as a GNS430/530 must be coupled to the HXr for GPS approaches at this time.
Page 33 GRT Avionics HXr Installation Manual Appendix: Mounting, Wiring & Interface Diagrams Hardware Mounting Templates HXr 10.4” Display Unit Mounting Template……………………………………………………………….. A-2 HXr 12.1” Display Unit Mounting Template……………………………………………………………….. A-3 External Module Footprint & Mounting Holes……..…………………………………………………… A-4 Magnetometer Installation Notes…………………………………………………………………………………. A-5 AHRS Installation Notes………………………………………………………………………………………………. A-6 Wiring Harness Details Connector A Pinout Diagram………………………………………………………………………………………..
Page 34 HXr Installation Manual GRT Avionics Revision A5...
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Page 37 GRT Avionics HXr Installation Manual FRONT Revision A5...
Page 38 HXr Installation Manual GRT Avionics Revision A5...
Page 39 GRT. Commonly used optional wires are supplied as loose wires. Wire colors and devices assigned to serial ports are suggestions only. See HXr Interconnect Diagram for suggested system connections. NC denotes No Connection inside display unit.
Page 40 HXr Installation Manual GRT Avionics Display Unit Connector B Pinout Diagram Connector B is a 25-Pin D-Sub male connector that attaches to the female EFIS 25-pin D-sub. Pins that are most likely to be used are pre-installed at GRT. Commonly used optional wires are supplied as loose wires.
Page 41 The ARINC 429 connector, or Connector C, plugs into a 9-pin female D-sub receptacle located on the back of the HXr display unit underneath Connector A and Connector B. A male 9-pin D-sub connector, along with eight male pins and a backshell, are included with the display unit.
Page 42 HXr Installation Manual GRT Avionics AHRS Interconnect Diagram Each AHRS unit can be controlled only by one Display Unit. However, each AHRS can feed information to multiple display units. Dual Display Units - Dual AHRS Serial 1 OUT Display Serial...
Page 43 HXr Installation Manual GRT Avionics Adaptive AHRS / GSNS (GPS) / Air Data Computer Connector Pinout Diagram Each AHRS can only receive input from one Display Unit, however, it can send information to multiple display units. Most dual display unit systems have a dual AHRS (one box containing two AHRS units).
Page 44 GRT Avionics HXr Installation Manual Digital Magnetometer Connector Pinout Diagram The AHRS connector may have these wires pre-installed, but the magnetometer cable is provided without the connector attached for easier routing through the airframe. Use the following diagram to attach the connector to the cable after running the wires. Be sure to inspect the pins before inserting them into the D-sub, as damage can occur from pulling them through holes in the airframe.
Page 45 HXr Installation Manual GRT Avionics A-13 Revision A5...
Page 46 HXr Installation Manual GRT Avionics FRONT A-14 Revision A5...
Page 47 HXr Installation Manual GRT Avionics Legacy AHRS (Part No AAS-) Connector Pinout Diagram The AHRS can only receive input from one Display Unit, however, it can send information to multiple display units for redundancy. Most dual display unit systems have a dual AHRS (one box containing two AHRS units).
Page 48 HXr Installation Manual GRT Avionics Legacy Magnetometer (For AHRS Part No. AAS-) Connector Pinout Diagram All electrical connections for the magnetometer are made to the AHRS/Air Data Computer via 9-pin D-sub connectors. The AHRS connector has these wires pre-installed, but the magnetometer cable is provided without the connector attached for easier routing through the airframe.
Page 49 GRT Avionics HXr Installation Manual Revision A5 A-17...
Page 50 HXr Installation Manual GRT Avionics GRT HORIZON HX & HXr TRIM/FLAP POSITION ANALOG INPUT TRIM/FLAP POSITION GREEN SENSOR TO EFIS ORANGE BLUE AIRFRAME GROUND Note 1: Wire colors noted in drawing are for a RAY ALLEN COMPANY trim motor or position sensor.

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