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Summary of Contents for GRT Avionics Sport EX
- Page 1 Sport EX/Horizon EX Installation Manual Revision A May 2019 GRT Avionics, Inc. 3133 Madison Avenue SE Wyoming, MI 49548 616-245-7700 support@grtavionics.com grtavionics.com...
- Page 2 Congratulations on your purchase of the GRT Avionics EFIS! We are pleased that you have chosen our product to meet your flying needs! This manual describes the installation of the GRT Sport EX and Horizon EX EFIS using the software version shown in the Record of Revisions. Some differences may be observed when comparing the information in this manual to other software versions.
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Page 3: Record Of Revisions
GRT Avionics, Inc. May 2019 RECORD OF REVISIONS Sport Revision Date Description SW Revision Re-issue as a standalone manual for Sport May 2019 EX/Horizon EX. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 4: Table Of Contents
SECTION 2: PLANNING YOUR INSTALLATION ............6 2-1: Choosing Your Serial Port Assignments—the Key to a Good Installation! ... 6 2-2: Common Equipment Interfaces ................7 2-2-1: Other GRT Avionics Display Units—the Inter-Display Unit Link ..... 7 2-2-2: AHRS ......................8 2-2-3: Autopilots ....................... 8 2-2-4: Autopilot Using GRT Avionics Servos ............ - Page 5 Appendix ........................32 A-1: Sport EX/Horizon EX Mounting Template ............33 A-2: External Module Diagrams ................. 34 A-3: Digital Magnetometer Installation Diagram ............35 A-4: Sport EX/Horizon EX Connector A Pinout Diagram ........... 36 Sport EX/Horizon EX Install. Manual Rev. A...
- Page 6 GRT Avionics, Inc. May 2019 A-5: Sport EX/Horizon EX Connector B Pinout Diagram ........... 37 A-6: Digital Magnetometer Pinout Diagram ............... 38 A-7: Angle-of-Attack (AOA) Installation and Calibration ..........38 A-7-1: Sensed AOA Installation................38 A-7-2: Calculated AOA Installation ................. 39 A-7-3: Calibration of the AOA (Calculated and Sensed) ........
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Page 7: Section 1: General Description
Initial Checkout, Basic Configuration, and Calibration – How to set it up and check it out. This manual, the Sport EX Setup Guide and the Sport EX User’s Guide comprise the entire set of Sport EX user documentation. *NOTE: This manual refers to the EFIS, display unit and screen; although it may seem... -
Page 8: 1-2: Certification
GPS. An internal GPS is standard in the Sport EX. Any external GPS may also be used, as long as its serial data output is in one of the commonly used avionic formats. Most GPS units will continuously transmit their flight plan, allowing the EFIS to display the flight plan on its Map and Flight Plan pages. -
Page 9: 1-4: Integrating Third-Party Equipment
EFIS navigation database. When the GRT Avionics Engine Information System (EIS) unit is connected to the EFIS, its data is displayed on the EFIS screen. The EFIS enhances the usefulness of the engine data by adding such features as an EGT time history, percent power and engine efficiency (specific fuel consumption). -
Page 10: 1-6: Supported Equipment
• Full Nav Interface with Garmin: o GNC Series Nav/Comm (420/420W) o GNS Series GPS/Comm (480) and GPS/Nav/Comm (430/430W/530/530W) o GTN Series GPS/MFD (625/725), GPS/Comm/MFD (635) and GPS/Nav/Comm/MFD (650/750) • Single or Dual Interface with Garmin SL30/SL40 Sport EX/Horizon EX Install. Manual Rev. A... - Page 11 • Zaon Flight Systems PCAS XRX and MRX • BF Goodrich WX-500 Stormscope • Vertical Power VP-X Series Electronic Circuit Breaker System • Serial Data Input Transponders • TCAS (Traffic Collision Avoidance System/Traffic Alert and Collision Avoidance System) Sport EX/Horizon EX Install. Manual Rev. A...
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Page 12: Section 2: Planning Your Installation
Note that when two devices share one serial port, they mush use the same baud rate. Some limitations that should be considered when planning your serial port connections: Sport EX/Horizon EX Install. Manual Rev. A... -
Page 13: 2-2: Common Equipment Interfaces
GPS can be wired to multiple GRT EFIS display units, its signal can be corrupted if the loading from the EFIS exceeds the standard. • The Sport EX serial ports are all high-speed, meaning that any serial port can be used with any device, regardless of the baud rate the connection may require. -
Page 14: 2-2-2: Ahrs
May 2019 2-2-2: AHRS The Sport EX/Horizon EX can receive two sets of AHRS data. Typically, one set of AHRS data comes from the DU’s internal AHRS while the second comes from a serial port connection to an external AHRS. This only applies to the Sport EX, with the Horizon EX requiring both sets of data to come from external AHRS sources. -
Page 15: 2-2-6: Ads-B Receivers
2-2-7: ADS-B GPS Output The GPS output from the Sport EX’s internal GPS is NOT FAA 2020 compliant for use with ADS-B or mode S with extended squitter transponders. If this GPS position data is used, the FAA will detect that a noncompliant GPS is being used. However, the GRT Safe-Fly GPS is 2020 ADS-B compliant and is approved by the FAA for this use. -
Page 16: 2-2-9: Panel-Mounted Transponders
The EFIS provides altitude encoding information to all common transponders. Gray code outputs are provided for older transponders that do not have a serial input for altitude data. The Sport EX requires an external adapter for Gray code altitude encoding outputs. Newer transponders may allow either serial output or Grey code. -
Page 17: 2-2-13: Gps Data To External Devices
A 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 Sport EX and Horizon EX both have a single USB port that may be used for one USB device. Alternatively, you may attach a USB hub to connect up to three devices. -
Page 18: 2-6: Analog Inputs/Audio Output
GRT in order to add them. 2-6: Analog Inputs/Audio Output The Sport EX/Horizon EX includes four analog inputs and an audio output as an option. The analog inputs allow the EFIS to measure up to four individual voltages in the airplane. -
Page 19: 2-9: For More Information
• The Experimental Aircraft Association has compiled a collection of videos called “Hints for Homebuilders” on its website, www.eaa.org. A quick search through these will give you valuable hints on various wiring topics, including properly crimping D-sub/Molex connector pins. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 20: Section 3: Physical Installation
DU when the canopy is closed. See the Appendix section A-1: Sport EX/Horizon EX Mounting Template for display unit dimensions and clearance requirements for the rear of the unit. -
Page 21: 3-3: Cooling Considerations
Configuration Settings and Calibration, after the initial boot-up checks of the Sport EX. 3-3: Cooling Considerations The GRT Sport EX/Horizon EX do not require external cooling. However, as with all electronic equipment, lower operating temperatures may extend equipment life. Units in an avionics stack heat each other through radiation, convection and sometimes by direct conduction. -
Page 22: Section 4: Wiring
Configuration Settings and Calibration must be completed to verify that the EFIS is not affected by radio transmissions on any frequency. • Consider the effects of individual component failures in the design of the system and create redundancy where necessary. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 23: 4-2: Power Connections
AHRS should be turned off during engine start-up. This maximizes the current available for the starter and prevents undesirable voltage fluctuations being applied to the display unit when it is booting up. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 24: 4-3: Ground Connections
“General Setup” menu. Each serial port is listed and entries are provided that allow them to be configured for a wide variety of functions. Since all serial ports on the Sport EX are high-speed, they are capable of receiving data at 115,200 baud and can be used for any function. -
Page 25: 4-6: Warning Light Output
This output provides a path to ground when active, thus the indicator should be wired with one of its terminals to aircraft power while the other is wired to this output. The maximum current that can be controlled by this output is 0.2 amps. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 26: Section 5: Initial Checkout, Basic Configuration Settings And Calibration
This will allow you to restore these setting if they ever become altered. It also allows you to review the settings when away from the airplane by viewing the backup file with a text editor. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 27: 5-3: Trig Tt22 (Rs-422 Port)
May 2019 5-3: Trig TT22 (RS-422 Port) The Sport EX provides an RS-422 port for a direct connection to the Trig TT22 Mode S transponder. If this port is wired to the Trig TT22, the following setting should be configured (the setting is accessed from the “General Setup” submenu within the “Set”... -
Page 28: 5-6: Defining Magnetometer Connections
No failure messages are listed in the status page (accessible from the "Status" softkey on the PFD screen). 3. Select “Set Menu” from the softkeys, and then select the “AHRS Maintenance” page. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 29: 5-8: Setting Ahrs Orientation
2. Enter the offset, in degrees, for each axis. Positive corrections correspond to right roll, pitch up and right yaw. See following figures (not to scale): Instrument Panel Tilt 20° Pitch Down = -20 Pitch Offset Longitudinal Axis Figure 5-1: AHRS Pitch Orientation Offset Sport EX/Horizon EX Install. Manual Rev. A... -
Page 30: 5-9: Magnetometer Location Validation
If so, this may be a result of changes in the electrical currents flowing through the airplane, suggesting that some current-carrying wires are too to the magnetometer. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 31: 5-10: Set Final Magnetometer And Instrument Orientation
If errors greater than 30° are observed, refer to the previous sections, 5-8: Setting AHRS Orientation and 5-9: Magnetometer Location Validation, to ensure that the AHRS is properly oriented and that the magnetometer is mounted in a valid location. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 32: 5-12: Fine Magnetometer Calibration Procedure
2. After the aircraft is positioned correctly, turn ON the GRT Sport EX/Horizon EX (If it was already on, then turn it OFF, and then back ON again). - Page 33 The magnetic heading errors should be less than 5° and can typically be reduced to about 2°. An accurate magnetic heading is required for the AHRS to display accurate heading data and to allow accurate wind speed/direction calculations. Sport EX/Horizon EX Install. Manual Rev. A...
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Page 34: 5-13: Measuring The Accuracy Of The Magnetic Heading
1° of heading error, 1.7% of the forward speed of the airplane will be falsely reported as a cross-wind. Thus, with only a 5° heading error, an airplane flying at 100 knots will show a false crosswind of 8.5 knots. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 35: 5-15: Basic Engine Monitoring Required Settings
*NOTE: The tachometer input can tolerate signals of 200V or greater, regardless of the TachSen setting. **CAUTION: Accurate tachometer readings should be verified by another tachometer source, such as an optical tachometer. Attempting to fly with insufficient engine power could be dangerous. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 36: 5-16: Other Required Settings And Options
EFIS Engine Limits Not required, but useful for assuring Performance power is below 75% for leaning. Fuel Scale Data Limits As needed if fuel levels are provided to the EFIS Sport EX/Horizon EX Install. Manual Rev. A... - Page 37 EFIS Settings Display Unit Use to save all settings to a USB Backup Maintenance memory stick whenever settings are updated to allow easy restoration of all settings. Sport EX/Horizon EX Install. Manual Rev. A...
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Page 38: Appendix
This section contains diagrams (mounting, wiring and interface), installation notes for specific components (magnetometer, angle-of-attack, etc…) and physical specifications for the Sport EX/Horizon EX. The Wiring and Pinout Diagrams included in this Appendix show the function of each D-sub connection and its associated wire color. Functions labeled NC have no connection. -
Page 39: A-1: Sport Ex/Horizon Ex Mounting Template
GRT Avionics, Inc. May 2019 A-1: Sport EX/Horizon EX Mounting Template Figure A-1: Sport EX/Horizon EX Mounting Template Sport EX/Horizon EX Install. Manual Rev. A... -
Page 40: A-2: External Module Diagrams
• GPS and ARINC modules are 9/16” taller Figure A-2: External Module – Top View than mount. • Allow an extra 3” above ARINC module for D-sub connector. Figure A-3: External Module – Side View Sport EX/Horizon EX Install. Manual Rev. A... -
Page 41: A-3: Digital Magnetometer Installation Diagram
GRT Avionics, Inc. May 2019 A-3: Digital Magnetometer Installation Diagram Figure A-4: Digital Magnetometer Installation Sport EX/Horizon EX Install. Manual Rev. A... -
Page 42: A-4: Sport Ex/Horizon Ex Connector A Pinout Diagram
GRT Avionics, Inc. May 2019 A-4: Sport EX/Horizon EX Connector A Pinout Diagram CAB-EXA-01: Connector A is a female 25-position D-sub connector that attaches to the display unit’s male 25-position D-sub connector. Wires for Primary Power IN and Ground are pre-installed in the connector housing. Commonly used optional wires are supplied as loose, terminated wires. -
Page 43: A-5: Sport Ex/Horizon Ex Connector B Pinout Diagram
GRT Avionics, Inc. May 2019 A-5: Sport EX/Horizon EX Connector B Pinout Diagram CAB-EXB-01: Connector B is a male 25-position D-sub connector that attaches to the display unit’s female 25-position D-sub connector. Commonly used wires are supplied as loose, terminated wires. Wire colors assigned to serial ports are suggestions only. NC denotes “No Connection.”... -
Page 44: A-6: Digital Magnetometer Pinout Diagram
The sensed version of the angle-of-attack option uses a two-port pitot tube, such as the Garmin GAP-26. If a heated probe is not required, a two-port pitot probe may be fabricated by mounting a second pitot tube, bent downward at approximately a 60° angle, as shown here: Sport EX/Horizon EX Install. Manual Rev. A... -
Page 45: A-7-2: Calculated Aoa Installation
The prompts will include a step where you fly the airplane near stall speed. When performing this step, minimal power should be used while the flaps should be in their retracted position. Sport EX/Horizon EX Install. Manual Rev. A... -
Page 46: A-8: Basic Engine Monitoring Wiring
GRT Avionics, Inc. May 2019 A-8: Basic Engine Monitoring Wiring (Requires purchase of Basic Engine Monitoring Option) Figure A-9: Sport EX Basic Engine Monitoring Wiring Sport EX/Horizon EX Install. Manual Rev. A... -
Page 47: A-9: Common Tachometer Connections
GRT Avionics, Inc. May 2019 A-9: Common Tachometer Connections Figure A-10: Common Tachometer Connections *Basic Engine Monitoring Option Only Sport EX/Horizon EX Install. Manual Rev. A... -
Page 48: A-10: Trim/Flap Position Sensor Wiring
A-10: Trim/Flap Position Sensor Wiring This diagram illustrates the use of an EIS Engine Monitor auxiliary input for sensing trim or flap position. A Sport EX may use this method or one of its optional analog inputs. Figure A-11: Trim/Flap Position Sensor Wiring Sport EX/Horizon EX Install. -
Page 49: A-11: Sport Ex/Horizon Ex Display Unit Specifications
GRT Avionics, Inc. May 2019 A-11: Sport EX/Horizon EX Display Unit Specifications Overall Size 7.19” W x 4.75” H Faceplate 1.5” Behind Panel Face (Approx.) Depth of Display Unit 6.25” W x 4.38” H Panel Opening Weight 1.5 lbs Sport EX AHRS/Air Data Computer Specifications Max. -
Page 50: A-16: Table Of Figures
Fabrication and Installation Installation A-9: Sport EX Basic A-8: Basic Engine Engine Monitoring Wiring Monitoring Wiring A-10: Common A-9: Common Tachometer Tachometer Connections Connections A-11: Trim/Flap Position A-10: Trim/Flap Position Sensor Wiring Sensor Wiring Sport EX/Horizon EX Install. Manual Rev. A... -
Page 51: A-17: List Of Tables
Connector B Pinout Diagram Diagram Digital Magnetometer A-6: Digital Magnetometer Pinout Diagram Pinout Diagram Sport EX/Horizon EX A-11: Sport EX/Horizon EX Display Unit Specifications Display Unit Specifications Table of Figures A-16: Table of Figures Sport EX/Horizon EX Install. Manual Rev. A...
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