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Mini-B manual

1. 15 Yaw Offset Longitudinal Axis Panther line drawing used with permission from Sport Performance Aviation LLC 22 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 4 5 Altimeter Calibration When the Mini is to be used for IFR flight the altimeter portion of the AHRS must be calibrated to conform to FAR 91 411 This is to be done at an interval in time as dictated by FAR 91 411 It is not necessary to calibrate the altimeter more often than this requirement The accuracy of the altimeter can be adjusted using entries provided on this page to account sensor errors that may occur due to aging The adjustments are stored within the AHRS Air Data Computer 4 5 1 Partial Altimeter Calibration Correcting Altimeter vs Baroset This calibration adjusts the relationship between the altitude display and the barometric pressure setting This calibration does not require an air data test set and may be performed on an annual basis or as needed as follows L 2 23 Position the aircraft at a location with a known elevation Turn on the Mini and allow at least 5 minutes to elapse before continuing Obtain the current barometric pressure setting This setting should be provided by the airport at which the airplane is located or a nearby airport and should be as recent as possible Access Set Menu gt Altimeter Calibration Altimeter Calibration Setting Value Use the knob to highlight 7 Cal
2. Press FLIGHT PLAN softkey to bring up the Flight Plan Entry Page Press the gt Mode softkey A page appears with columns of letters and numbers shown below Enter the identifier of the waypoint you want to go to To do this press the softkey under the first letter in the waypoint until that letter is highlighted and appears in the waypoint ID field on top of the screen Press the knob with NEXT highlighted to advance the cursor HINT If the next letter or number is in a different column you can simply press the softkey under the next character s column to automatically advance the cursor After the waypoint identifier is entered turn the knob to highlight ENTER then press the knob The Active Direct To flight plan page appears Verify that the waypoint shown is correct then press EXIT Follow the GPS CDI indicator to the waypoint Knob Functions e CANCEL Cancel waypoint entry and go back to previous screen e CLR Go back one character to re enter e NEXT Advance cursor to next character e ENTER Enter the waypoint into the flight plan and go to Active Flight Plan page e REM K or ADD K Shortcut to add remove the K to an airport or NAVAID identifier DIRECT TO SELECTION K L AIL 12 6 016 LAKELAND LINDER RGNL Airport in LAKELAND FLORIDA Wo OOo J n U BUI M N O Q R A B C D E F H PON lt XxS lt C P 5 Revision A3 Mini B Installation Setup amp User Manual GRT Avion
3. Clearance Altitude OROCA which provides Vertical 1000 foot obstruction clearance in non Speed mountainous terrain areas and 2 000 foot Indicator obstruction clearance In designated 7 mountainous areas within the United States An w on e en 90 altitude below the OROCA is shown yellow aa above the OROCA is shown green BARO 5 3 1 To Change the Altimeter Setting 1 From the PFD screen turn the knob to enter the new altimeter setting 2 Press the knob to accept the new baro setting or press CANCEL to abandon the changes 28 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 5 4 Vertical Speed Indicator The vertical speed indicator VSI is along the left side of the altimeter The tape is white and radiates upward or downward from the neutral mark as the aircraft climbs and descends It shows vertical speed in feet or meters per minute The vertical YOA tape speed is also presented digitally at the bottom of the scale when descending and at the top of the scale when climbing VSI The VSI tape s upper limit can be programmed to fit the climb o performance capability of the aircraft for a more precise visual representation To customize the VSI 1 Access Set Menu gt Primary Flight Display 2 Scroll to Max Indicator Vertical Speed Choose the upper limit of the VSI scale most appropriate for the aircraft s climb performance The actual rate of climb will still be displaye
4. Some softkeys may be different or displayed in a different order depending upon your software version and equipment connected to the Mini such as a Trig TT22 remote transponder Use this section as a guide to learn the general placement and functions of the softkeys GRT Avionics Mini B FLIGHT PLAN sF Pi Flight Plan Screen Select More Turn to adjust Entry Page Dimmer Nav items Altimeter Setting Source Continued on next page Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Pa ei eee ee 130 140 150 wa uh n mei o TH i 110 an oh 7 ie a CHANGE STATUS aig STOP Exit GRT Avionics Mini B eS ae 170 450 DO 1000 Prr ima 29 92 2BARO Change Erroror Demo File Done Turn to adjust View Mini Warning Manual with Altimeter Setting Settings Details Controls Softkeys Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Section 2 Wiring Considerations 2 1 Mini B Connector Definition The Mini B comes with a female DB15 connector pre wired with the most commonly used wires Power and Ground are the only required electrical connections for basic operation of the instrument the OAT serial ports and Trig TT22 connections are all optional The colors shown here correspond to the colors in the supplied wiring harness e The supplied wires are 4 feet long e The OAT serial ports and Trig TT22 connections are all optional
5. C4 6 00 Fragen Code 0270 an _ e 118 y _ 2 GS Pra E VII non XPDR ALT DEI SAVE geti CANCEL 1200 CHANGE 41 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 7 2 Data Recording 42 There are three basic types of files that you can record off the Mini A simple snapshot is a still shot of the screen This is saved as a PNG file on your USB drive Snapshots are nice for times when you want to record things like a high ground speed or unusual performance We use customer supplied snapshots almost exclusively for the graphics in our new manuals A demo file recording of the flight data for later playback on the display unit itself or for displaying in a spreadsheet format This includes all of the serial data as well as a recording of flight instrumentation AHRS data GPS position and map features You can play back the demo file recordings directly on your Mini to debrief a flight or review flight testing performance information The USB Flight Data Logger samples data at a user selected interval and writes that to a CSV file at the save interval It s designed as an always on continuous data recorder that requires less data than a DEMO and stores it in a more compact and easy to use format Data is always added to the end of the GRT Flight Data Log CSV file on the USB flash drive Keep in mind that data on the USB stick can be recovered and analyzed by NTSB authorities after a wreck similar t
6. EEEE A 30 Die FOE PANVA ir ORIO E O i 32 Section 6 Flight Planning amp Navigation oL GPSCDI bri 33 6 2 FigntPianning with Laren 33 6 3 Airport Facilities Information and Radio TUNINQ i 39 Section 7 Miscellaneous Features 7 1 Trig TT21 TT22 Remote TFANSPONAGRi urinarie 40 12 DARO OTA aes Ra 42 Appendix A SoftWare Updates nei an 45 6 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 1 1 1 2 1 3 Section 1 Introduction About the Mini B We designed the Mini with two main goals in mind A small lightweight economical VFR EFIS system for LSA and light kitplanes and an affordable high quality backup to larger EFIS systems for IFR operations The Mini utilizes the same pilot interface as the popular Horizon and Sport series If you already use GRT avionics for your primary flight display you will not have to remember a different brand s buttonology in an IFR emergency The Mini has a built in GPS for navigation so you will always know where you are In addition to the basic backup flight instruments all models of the Mini can also serve as a Serial altitude encoder for any modern transponder and serve as a control head for a remote Trig TT22 transponder To top it off the brilliant 1200 nit high resolution display shared by all three Mini models ensures great visibility in all lighting conditions Tools amp References for Installation In addition to bas
7. Service Request Form downloadable from the GRT website Support section Satisfaction Guarantee If for any reason you are unhappy with your GRT product you may return it for a refund anytime during the first 60 days you own it Some restrictions apply Please call GRT Tech Support before returning any system or component Technical Support Our tech support staff has many years of real world experience installing flying and troubleshooting GRT equipment in many different types of aircraft We are here to make sure your project succeeds Tech Support Hours Monday Friday 9 00 AM 12 00 PM and 1 00 PM 4 00 PM Eastern Time 616 245 7700 EFIS Support phone menu option or benk grtavionics com 24 Hour Tech Support The GRT Online Forum Many questions may already have answers posted in our Online User Forum Join today for free www grtavionics com forum Revision A3 Mini B Installation Setup amp User Manual Table of Contents Section 1 Introduction 1 1 About the MINEB cir interinali 1 2 Tools amp References for Installation i 1 3 Mini System ReQuirementSs i 1 4 AHRS Specifications and LimitationS cescesscesseceseeeseeesseeseeeesees Fig 1 1 Mini Dimensional DrawinNQ i 1 5 Basic Controls of the MINI ii Section 2 Wiring Considerations 2 1 Mini B Connector DefinitioNS ii Fig 2 1 Mini B Rear Case Connector Diagr
8. e OAT is required for true airspeed and density altitude calculations when the Mini does not have a serial connection to a working GRT Horizon or Sport EFIS display unit e Use Trig TT22 A and B connections for control and encoder information for the TT22 e Any of the serial port pairs can be used for a variety of connections including connection to another GRT display unit for limited data sharing serial transponder or handheld GPS Lr co a ewe ae Co fen vi a horan O COo horas Oooo s femo aw ee WR _ r ferma e a rower 8300 RD a sato ao setae a e Tene Co foes RE a rete vee as do No 1 2 3 4 5 7 10 11 12 13 14 15 Revision A3 Mini B Installation Setup amp User Manual Figure 2 1 Rear Case View Connector Placement Pitot Port GPS Antenna Mini USB Port DB15 Connector male Static Port GRT Avionics Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 2 2 2 3 General Wiring Guidelines Wires that are certain to be used are pre installed in the Mini cable assembly connectors Optional connections to the Mini 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 The cable description diagram includes recommended wire colors for each connection to the Mini s components When routing the wiring the following guidelines
9. feet Aiding Requirements for Attitude data External Magnetometer or GPS position data Loss of both results in loss heading reference Extended periods with no aiding could reduce the accuracy of the attitude data 1 4 1 AHRS and Loss of GPS Data Initial alignment At power up the AHRS performs an alignment This allows the AHRS to provide attitude with minimal or no aiding after alignment is complete The alignment of usually complete by the time the EFIS has booted up and is providing a display The alignment will complete more quickly if the airplane is held motionless on the ground If too much motion occurs during alignment it is possible that alignment will not complete until GPS track information is available GPS track requires the GPS is to provided valid position data and the airplane to be moving Normal Operation Attitude data will be full accuracy when valid GPS ground track data is available If GPS ground track data Is lost because the airplane is moving less than 4 mph or the GPS is not able to provide position data the AHRS will attempt to use its internal magnetometer If the internal magnetometer is too inaccurate due to magnetic disturbances near the instrument the ground track display on the PFD screen will show dashes The AHRS will provide full accuracy attitude information for at least 5 minutes CAUTION If the EFIS is unable to provide GPS ground track the ground track display on the PFD screen is
10. pitch ladder indication will result in greater understanding of the pitch changes that occur with changing airspeeds power settings and cargo loading 5 6 3 Sky Pointer The Sky Pointer is the white triangle in the middle of the bank indicator hash marks This simply points UP at all times If you roll inverted it will point at the sky and thus appear as if it s pointed at your floorboards This is displayed as an aid for unusual attitude recovery and also serves as the bank angle pointer Marks indicate 10 20 30 45 and 60 degrees of bank Slip Skid Ball Turn Rate Indicator 5 6 4 Turn Rate Indicator The Turn Rate Indicator is depicted at the top of the pitch ladder and below the heading window as a pair of inverted green triangles The Mini calculates the angle of bank required to make a standard rate turn at the current airspeed The rate indicator triangles spread out or in as the airspeed increases or decreases To make a standard rate turn align the sky pointer with the green triangle The Turn Rate Indicator triangles can be turned off to declutter the display To turn it on or off 1 Access the Set Menu gt Primary Flight Display page 2 Scroll to Turn Rate Indicator and select ON or OFF as appropriate 5 6 5 Slip Skid Inclinometer Ball The electronic slip skid ball or inclinometer works using the internal accelerometers in the AHRS It can be turned off for decluttering purposes To turn it on or off 1 Acces
11. power setting the pitch ladder should be set so that the Attitude Reference Index is aligned with the zero pitch line The object is to set the pitch ladder for the easiest possible instrument scan during cruise 1 Access the Set Menu gt Primary Flight Display page 2 Scroll to Pitch Ladder Offset Adjustments are made in positive or negative 1 degree increments a positive setting will move the Attitude Reference Index up and a negative setting will move it down 30 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 3 Adjust it in small increments until the Attitude Reference Index and the zero pitch line are aligned during level normal cruise flight NOTE Pitch Ladder Offset should notbe used to compensate for the tail down attitude of a taildragger on the ground When you are on the ground in a taildragger the view out the virtual EFIS window should look toward the sky just as it looks out the windshield Pitch ladder offset is ONLY for calibrating straight and level flight It should also never be used to adjust the attitude indication for varying airspeeds or other flight conditions Once it s set for your particular airframe engine propeller combo the Pitch Ladder Offset should not normally be moved Adjusting this for varying flight conditions can be dangerous when those conditions change again potentially leading to spacial disorientation in instrument conditions Paying attention to a consistently placed
12. scale A deflection to the left indicates the airplane needs to be maneuvered to the left to get back on course The center of the CDI includes a triangle that points up or down to indicate TO or FROM the GPS waypoint respectively Note FROM indications result in reverse sensing for the deviation indicator identical to that of a VOR type CDI indicator This allows normal sensing when tracking outbound from a GPS waypoint The deviation bar and TO FROM indicator are be displayed whenever a waypoint is active in the GPS flight plan The scaling of the CDI indicator changes automatically from 5 0 nm full scale when enroute to 1 0 nm full scale in terminal phase within 30 nm of the destination to 0 3 nm during approach phase Approach phase can be detected by the GRT only when Aviation format of GPS data is provided to the GRT Sport The scale is indicated under the left side of the CDI bar In addition to the CDI bar the active waypoint and time distance to that waypoint are displayed on the PFD Location to be determined in the next software release 6 2 Flight Planning with the Mini The Mini can take a flight plan in several different ways e Enter Direct To single waypoint or Sequence Mode multiple waypoint flight plan directly into the Mini using the waypoint entry page This is called an Internal flight plan because it uses the Mini s internal GPS or a GRT GPS module e Follow an External Flight Plan from a connected GPS such as
13. to start Answer prompt with YES The database will load from the USB drive into the display unit When it is finished it will automatically reboot A 1 5 Update AHRS Software 1 Press the SET MENU softkey Turn the knob to scroll to AHRS Maintenance Press the knob to select 2 Turn the knob to scroll to Load AHRS Software Press the knob to start The screen prompts you Load AHRS Software ARE YOU SURE Press the YES softkey 3 The display will transfer the new AHRS software directly from the USB stick This may take up to 3 minutes When the upload is finished the AHRS module will reboot and resume normal operation within 30 seconds NOTE Unlike other GRT systems the display unit itself will NOT reboot after the AHRS upgrade A 1 6 Update Air Data Pitot Block Software 1 Press the SET MENU softkey Turn the knob to scroll to AHRS Maintenance Press the knob to select 2 Turn the knob to scroll to Load Air Data Software Press the knob to start The screen prompts you Load Air Data Software ARE YOU SURE Press the YES softkey 3 The display will transfer the new Air Data software directly from the USB stick This may take up to 3 minutes When the upload is finished the air data module will reboot and resume normal operation within 30 seconds NOTE The display unit itself will NOT reboot after the Air Data software upgrade Revision A3
14. 5 2 Airspeed Tape The primary function of the airspeed tape is to display indicated airspeed and its associated color bands all of which are fully programmable according to the aircraft design limitations It also has several supplemental sources of information to provide the pilot with an intuitive sense of airspeed change as well as true airspeed and groundspeed The instantaneous indicated airspeed readout is contained in the black box with large bold numbers The digits appear to roll by smoothly as speed changes The units of distance speed are displayed below the digital readout True airspeed TAS is displayed in the upper left corner if an OAT probe or another GRT EFIS display is connected GPS groundspeed is displayed in the lower left corner as shown below True Airspeed gt Eli TAS AT Indicated Airspeed gt 5 Fi Speed Distance Units gt LSE z Trend Arrow Ground Speed gt GS 5 2 1 Trend Arrow The trend arrow points to the predicted speed of the aircraft in 5 seconds at the current rate of acceleration 5 2 2 V Speed Reference Markers The airspeed tape also features three programmable V speed reference markers that appear as magenta triangles with letters X Y amp G these stand for for Vx Vy and Ve best glide Vx airspeed marker alongside the green and white color bands 5 3 3 Colored Airspeed Bands The colored band on the airspeed tape follows the standard airspee
15. ESRI Mini B EFIS Installation Setup and User Manual GRT Avionics Mini B Revision A3 16 Jul 2014 Mini B Installation Setup amp User Manual GRT Avionics Copyright 2014 GRT ess AVIONICS 3133 Madison Ave SE Wyoming MI 49548 616 245 7700 www grtavionics com 2 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Mini B Manual Revision Notes Mute a innana a2 i61unzona APRend A 1 5 and A 1 6 Corrected and clarified AHRS and Air Data Software update instructions Added amp clarified wiring options for Trig TT21 TT22 remote transponder A3 16 Jul 2014 Section 2 9 Added TT22 to list of choices for RS 232 serial ports Section 2 6 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Thank you for choosing GRT Avionics We hope you enjoy your new avionics system for many years to come Warranty amp Return Policy All GRT products include a 2 year warranty starting on the day the instrument is put into service or three years after purchase whichever comes first against manufacturer defect Please contact Tech Support before returning a display unit or component to GRT for repair or warranty work Many issues are installation or software related and can be resolved over the phone saving time and expense Please keep in mind that the minimum bench charge for EFIS units is 100 AII returns for repair or upgrade must be accompanied by a
16. This setting displays the orientation of the instrument relative to the earth Changing this setting will change the roll attitude by the amount of the change The change will take effect when the knob is pressed to exit this setting Pitch Adjustment This setting displays the orientation of the instrument relative to the earth Changing this setting will change the pitch attitude by the amount of the change The change will take effect when the knob is pressed to exit this setting Yaw Adjustment This setting shows how far the EFIS is oriented pointing off the longitudinal centerline of the airplane The following page illustrates how this adjustment is made After this setting is made it should be verified When correct changing the pitch attitude of the airplane will only affect the pitch displayed on the EFIS and the roll attitude displayed will not change due to pitch changes This test can be accomplished by lowering or raising the tail when on the ground or by carefully pitching the airplane in flight in a wings level attitude Revision A3 Mini B Installation Setup amp User Manual GRT Avionics These diagrams illustrate how the orientation settings are made to account for the mounting of the instrument in the airplane for pitch and yaw Positive corrections correspond to right roll pitch up and right yaw Instrument Panel Tilt 20 Pitch Down 20 Pitch Offset Longitudinal Axis Mini Tilted toward Pilot 15 Right Yaw
17. ade from any display unit and will be applied to all Designate one serial port pair for the Mini and another for the GRT display you want to connect it to and wire as shown below Set the serial port rate to 19200 for both screens Serial ports shown are just an example any serial port can be used Serial 1 TX GRT Horizon or Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 2 5 Trig TT21 T1T22 Transponder Interface The Mini is able to function as the control head for a Trig TT21 or TT22 remote transponder Visit the Trig Avionics website for the TT21 22 installation manual and wiring diagrams The Mini replaces the Trig TC20 control head There are two options for wiring the Mini to the Trig Option 1 Wire the Trig to the Mini only using the Mini s dedicated Trig port This output has an RS 485 based serial format that is compatible with the Trig controls When the dedicated TT22 port is used do not use the GRT Trig TT21 22 Serial Adapter which is RS 232 based 1 Wire the TRIG TT22 A and TRIG TT22 B pins on the Mini s DB15 connector to either of the Trig s two TMAP sets as shown below 2 Wire Pin 13 on the transponder directly to ground to allow the transponder to power up TRIG TT22 A Trig 1121 22 Remote Unit Option 2 Wire the Trig to both the Mini and one other GRT EFIS screen Applicable only to Sport SX and Horizon HX HXr units Because Sport and Horizon screens do not have a dedicat
18. am cccesccesscessesstseesteesseeeeseeeeeens 2 2 General Wiring GUI GOWN CS oigscs dnccnsdessceesatendedsonatauatascsas sdeascusootasessaneaduneansceges 25 PONT COMEC IONS e E 2 4 Inter Display Communication ii 2 5 Trig TT21 TT22 Transponder InterfaCe 2 6 General Serial Port Wiring Information iii Section 3 Mechanical Installation 3 1 Placement of the Mini on the Instrument Panel ccc eeeeeeeees 3 2 Mounting Hardware ii 3 3 Pitot Static CONNECHIONS a 3 COSINg Consilia Section 4 General Setup amp Calibration 4 1 BOOE UD CNECkrriziriaiirrairraiiare in 4 2 Explore the Set Menu PagesS ii 4 3 Set Up Your General PreferenCesS GRT Avionics Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Table of Contents continued AA Set Instrument OrientatiOn iii 22 4 5 Set Final Instrument Orientation Flight TESt cescescsstessesessesssesseesesseeseeseeeeen 23 4 6 Altimeter CalibratiOnN ie 23 Section 5 Primary Flight Display 5 1 Primary Flight DISplay OVernvieW iii 26 BZ A PACT AO rra e AE E E E N E A 27 OAE pesa ia 28 5 4 Vertical Speed Indicator i 29 ero fcc 12 Ae EiS EA E enn ane ne enn oe One eet ta 29 SO Aw MeV MASON VSI MGS eresien e EEE SEEE S EENE E EE
19. an iFly 720 or Garmin Aera External Flight Plans can not be edited within the Mini They must be edited by the device that created them However they can be copied into the Mini unit to become an Internal flight plan e Import a GPX flight plan from a USB stick such as one created with iFlightPlanner com Imported GPX flight plans are considered Internal and can be edited in the Mini 33 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 6 2 1 To Go Direct to Nearest Airport or Navaid 1 Press FLIGHT PLAN softkey to bring up the Active Flight Plan page 2 Press Mode softkey 3 Press NEAR softkey then press AIRPORT or NAVAID to bring up a list of nearest waypoints 4 Use the knob to scroll through the list Highlight the one you want then press the gt softkey 5 The Active Direct To flight plan page appears Verify the identifier of the waypoint you want to go to then press EXIT to go back to the PFD screen 6 Follow the GPS CDI indicator to the chosen waypoint OOOO ee Le ee ee ee Tn ACT VE H Fal LULA Ok PA RNG BRG Range Bearing CTAF Length Surface Lights 5 6 359 500 Soft No 64 262 2188 Soft No 6 2 2 6 3000 Soft Yes 351 2000 Soft No 24 122 900 3115 Soft No 181 3400 Soft No 39 123 050 948 Hard Yes 124 500 122 900 34 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 35 6 2 2 To Enter a Direct To Waypoint L 2
20. cord over 30 hours of flight time If you use an 8 GB memory stick you can record over 100 hours without thinking about it Add change or erase USB stick to your oil change checklist to make it really easy 1 Go to SET MENU gt General Setup Highlight DEMO Settings right above the SNAP settings and press the right knob to activate the menu Here you ll find several choices To imprint date and time in the upper left corner of the recording Choose YES next to Use Date Time in Filename This places the start date and time in the DEMO filename in the format DEMO YYYYMMDD HHMMSS LOG if the date and time is available Otherwise the file is named with a number only starting from DEMO0000 LOG Specify the maximum file size of the recordings MB Choose from 1 to 15 MB under Max File Size You can specify how big you want the files to be for easier handling or emailing A typical recording is less than 1 MB per minute Yours may be more or less depending on how much data is being recorded Upon reaching the max file size the display unit will stop recording momentarily to write the data to the USB stick The bigger the file the more continuous data you will get The smaller the file the more often it will save the data Specify maximum recording time in minutes Choose from 1 to 120 minutes under Max File Time Start and save recordings automatically Under the Automatic Start Stop heading choose to record nothing automa
21. d numerically even if the visual indicator is maxed out 5 5 Track Indicator 29 The track tape covers a 70 span and is presented on top of the PFD screen In addition to the large TRK value in the main heading track window it displays three parameters with the following symbols The bearing and track symbols fit inside each other so they create a nice visual effect when the aircraft is on course Bearing to GPS Track Indicator waypoint VV Bearing to current GPS waypoint A GPS Ground Track Indicator Track Window NOTE TRACK is the only available direction indicator for the Mini B and stock Mini X Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 5 6 Attitude Instruments The Artificial Horizon is just that a pictorial representation of the earth The blue portion represents the sky the green or brown portion represents the ground The Mini X displays a computer generated representation of the view out the window using GPS based technology known as synthetic vision to enhance the artificial horizon and make it more realistic By adding details such as mountain peaks runways and obstacles to the pilot s instrument scan field of view the system adds intuitive situational awareness even in low visibility and instrument conditions Other instruments add motion sensing trend vectors and environmental information to the scan as well providing an intuitive feel for the pilot The total picture o
22. d color scheme The indicated airspeed value turns yellow or red when it is within the yellow or red ranges for additional emphasis Zero to Vs full flap stall speed Airsoeed values too low to register on the EFIS will appear as a red dash in the digital readout window Option Red or clear White Full flap stall speed Vso to flap extension upper airspeed limit Vee Stall speed Vso to maximum structural cruise speed Vno Maximum structural cruise speed Vno to never exceed speed Vne Never exceed Vne and beyond 27 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 5 2 4 Customizing the Airspeed Tape For Your Aircraft The airspeed indicator settings are programmed in Set Menu gt General Setup gt Primary Flight Display They should be programmed before the first flight according to the design limitations of the aircraft and can be fine tuned during flight testing to match the individual aircraft s flight characteristics 5 3 Altimeter Tape The Altimeter Tape displays altitude above mean sea level MSL in hundreds of feet or meters Terrain Even thousands are depicted by a solid marker Clearance either a circle triangle or rectangle Five Color hundred foot increments are depicted by a Band hollow marker The baro setting is displayed in the lower right corner Digital MSL Altitude The terrain clearance color band on the edge of the altimeter tape shows the Off Route Obstacle
23. e and OUT Transmit Data packets are transmitted or received at a certain rate called the baud rate Every device that connects to a serial port has a published baud rate which must be entered into the Serial Port Rate setting for the device to communicate with the Mini Some devices use both the IN and the OUT channel on a serial port and some use either IN or OUT If two devices share one serial port the baud rate of both devices must be the same For example the Mini can take GPS position from a handheld GPS but it can t talk back to the GPS therefore the GPS only requires the IN half of the serial port The Mini transmits encoder data to a transponder but does not receive data from the transponder The GPS and transponder can share the same serial port IF both devices use the same baud rate Choices available for the Mini serial interface include i Positioning Most handheld GPS units use this data format NMEAO1 PS2 Global Li i ua oaa Secondary External GPS Positioning Trig TT22 or TT21 remote transponder using the GRT Serial Adapter Not required if the TT22 is wired to the dedicated TT22 port instead See Section 2 5 for more information 17 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 3 1 3 2 3 3 3 4 Section 3 Mechanical Installation Placement of the Mini on the Instrument Panel The Mini is permanently mounted on the instrument panel face The main consideration in c
24. ed RS 485 based Trig port you must attach a GRT Dual Control Serial Adapter to the transponder which is then wired to an RS 232 serial port on both the Sport Horizon and the Mini as shown below Wiring and setup information can be found in the GRT Trig TT21 22 Supplement downloadable from the GRT website under Support gt Documentation gt Equipment Supplements Follow all other instructions in the TT21 22 installation manual for wiring and setup Instructions for how to operate the transponder through the Mini pilot interface are found in Section 7 of this manual Serial IN Trig TT21 22 Remote Unit Serial OUT GRT Trig TT21 22 Dual Control Adapter See GRT Trig TT21 22 Supplement for complete wiring information Sport SX Horizon HX or HXr Serial OUT Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 2 6 General Serial Port Wiring Information The Mini s RS 232 serial ports can be used to connect the Mini to a variety of interfacing equipment In systems using a larger GRT display unit as the primary EFIS one of the Mini s serial ports will most likely be used to connect to the primary GRT EFIS screen for limited data sharing during normal non emergency operations including flight plans screen dimming and altimeter settings Radios with a serial interface can be tuned from the Mini s Waypoint Details frequency list Serial Port Basics All serial ports have two parts IN Receiv
25. ed successfully in GRT EFIS installations Consider placing a water trap or drain in the lowest part of the pitot static system to prevent water from getting into the electronics Make sure the drain is of a high enough quality that it seals completely airtight when closed Cooling Considerations The Mini draws very low amounts of power and does not require external cooling However as with all electronic equipment lower operating temperatures can extend equipment life If you do choose to supplement your Mini and other avionics with cooling air be certain that cooling air does not contain water a problem often encountered when using external forced air cooling air A few small openings in the glare shield are usually enough to allow natural air circulation Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 4 1 4 2 Section 4 General Setup and Calibration NOTE Each subsection in this section represents a step in the setup and calibration of the Mini and optional external magnetometer Perform each step in the order presented here for the most efficient setup procedure Boot Up Check Apply power to the Mini The display backlight should come on and show the boot page within 30 seconds Note device communications installed software version and navigation database effective date and whether there are any other errors then press ACCEPT Explore the Set Menu Pages Settings preferences and calibratio
26. ffered by the artificial horizon consists of several graphical elements working together yi Y f 5 6 1 Attitude Reference Index 10 _ dh noi The Attitude Reference Index is always the in the same position relative relation to it providing the indications of pitch roll and which way is UP The traditional attitude bars or wings can be replaced by a nose indicator shown at lower right This small indicator concisely displays Attitude Reference Index with the nose position of the aircraft relative to the horizon Flight Path Marker To select Nose or Bars wings 1 Access Set Menu gt Primary Flight Display gt Attitude Reference Index 2 Select NOSE or BARS 5 6 2 Pitch Ladder Offset The Pitch Ladder is a portion of the artificial horizon that depicts the pitch angle of the aircraft in relation to the horizon It consists of horizontal lines above and below the neutral horizon line The ladder rungs are in 5 degree increments In the screenshot above right the pitch angle of the aircraft is about 2 5 degrees nose high as shown by the Attitude Reference Index bars crossing halfway between the first rung above the zero pitch horizon line In the screenshot at right note the white circle that marks the 90 degree pitch rung This is visible during a loop or hammerhead 90 degree pitch rung Adjusting Pitch Ladder Offset During straight and level unaccelerated flight at the normal cruise
27. he software Daa Recent Places di LSA Documents Shortcut 2 1 Insert the USB drive into the computer s USB port A window may pop up that says Auto odi Play This window will also list the USB Homegroup drive s name as Removable Disk with a sia letter designation Remember this name A A 4 Computer because it will make it easier to find the USB Law drive on your computer Open the USB drive ISEE to view the files You may select and delete Click name of USB drive to select it as the destination for your software file the factory SanDisk files if you wish Delete E all files from the drive with dat and db ot nn SoU gt te n SIO ns Save as type DAT File dat ex a Hide Folders 2 Go to the Software web page for the Mini system Find the Display Unit software download link 3 Click DOWNLOAD with the right mouse button and select Save Link As The window at right will appear Click on the name of the USB drive under the Computer heading to tell the computer to save the file onto the USB drive 4 Save the file in the root directory of the drive This means it is NOT inside a folder but in the open The Mini will not see the file if it s hidden inside a folder on the USB drive IMPORTANT Make sure the filename does not have any numbers in parenthesis after it The Mini will not recognize the file if the name has been changed Example MiniUP dat is the
28. hoosing a location is the ability to view the display unit and reach its controls The Mini includes user settings that allow it to be mounted in a wide range of orientations including instrument panels with a high degree of tilt pitch sub panels or even wing roots that angle the Mini toward the pilot in yaw and roll offset These settings which are explained in Section 4 allow the internal AHRS to function with full accuracy regardless of its orientation Since the display is fully sunlight readable shielding the display unit from sunlight is not required See Section 1 of this manual for instrument and panel cutout dimensions Mounting Hardware The use of nut plates behind the instrument panel greatly simplifies the task of installing and removing the 4 screws used to retain the display unit in the panel 4 socket cap stainless steel screws are recommended Pitot Static Connections The pitot static connections on the back of the Mini are labeled P pitot and S static and take a 1 8 27 NPT male fitting To facilitate installation and removal of the Mini unit quick disconnect fittings may be helpful Refer to FAA Advisory Circular 43 13 2B for approved methods to tee off existing pitot static lines and make the whole system leak tight Thread sealant or tape is optional You may carefully wrap the fittings with teflon tape for a better seal provided the tape cannot block the port Loctite 567 thread sealant paste has also been us
29. ibrate OFF Rotate the knob to turn it ON Calibrate OF Set the baroset to the currently reported altimeter setting Use the knob to highlight the Bias setting Adjust the setting until SAVE CANCEL MAIN the altimeter matches the airport elevation Note that there is about a 2 second delay until adjustments are reflected in the displayed altitude Press the SAVE softkey then EXIT Calibration is complete Do not alter any other altitude settings The altimeter calibration will be turned off automatically when this page is exited Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 4 5 2 Full Altimeter Calibration Using Air Data Test Set This calibration adjusts the relationship between the altitude display and the barometric pressure setting using an Altimeter Test Set 2 3 A Turn on the Mini and allow at least 5 minutes to elapse before continuing Connect test set to the pitot AND static ports of the Mini Set the test set to sea level 0 From the PFD page use the knob to adjust the baroset to 29 92 on the Mini Access Set Menu gt Altimeter Calibration Verify the baroset is 29 92 Use the knob to highlight the Bias setting Temporarily adjust the Bias setting until the altimeter reads 0 feet Set the altimeter test set to 30 000 ft and note the Mini altimeter reading Calculate the scale factor as follows Calculate the Altitude Error as Altitude_E
30. ic mechanical hand tools a D sub pin crimper is required in most installations A basic 4 way indent crimper is available from SteinAir for less than 35 We supply a few loose male and female pins with your wiring harness and we have them available for sale if you need more If you are new to electrical systems and wiring we highly recommend reading 7he AeroElectric Connection by Bob Nuckolls This book has been around for almost 30 years and covers everything a homebuilder needs to know about how electrical systems work how to design them and how to build them There are also numerous online video tutorials by EAA SteinAir and others in the experimental aircraft community on wiring technique and electrical system design Mini System Requirements The Mini utilizes the following systems for operation e Aircraft Power 12 or 28 volt system 0 25 Amp current draw at full brightness e Pitot static connection for flight instrumentation e Built in GPS with a remote puck antenna which must be within view of the sky at all times Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 1 4 AHRS Specifications and Limitations Maximum Angular Rate 250 deg sec Maximum G Limit 4 G s for unlimited time 10 G s for up to 20 seconds Exceeding these limits will not damage the instrument Ambient Temperature Range for full accuracy 10 F to 150 F Airspeed Range 20 335 mph IAS Altimeter Range 2000 to 40 000
31. ics 36 6 2 3 To Enter a Multiple Waypoint Internal Flight Plan 1 2 Press FLIGHT PLAN softkey to bring up the Flight Plan Entry Page To add a new waypoint press the ADD softkey The waypoint entry page will appear Follow steps 3 5 outlined in the Entering a Direct To Waypoint section to enter the first waypoint To enter another waypoint press ADD again and repeat step 2 Continue until all the waypoints are entered Verify that the waypoints in the Active Flight Plan list are correct then press EXIT Follow the GPS CDI indicator and the waypoint bearing information on the PFD At any time during the flight To add a waypoint to the middle of the flight plan highlight the adjacent waypoint and press INSERT BEFORE then repeat step 2 To activate a leg in the middle of the flight plan highlight the second waypoint in the leg and press SET LEG ACTIVE FLIGHT PLAN KLAL KSYl RNG BRG ETE 18 5 021 0 11 KMGR 207 8 339 2 53 KSYI 299 3 340 6 45 Knob Sidebar Functions Press the knob to activate the sidebar cursor e Clr FP Clear all displayed waypoints and start over e User WP Create a custom User Waypoint or select one from your list e Save Saves the current Flight Plan to memory e Rev FP Reverses current flight plan to fly back home e Sel FP Displays a list of previously saved flight plans so you can select one e Del WP Deletes the highlighted waypoint in the current flight plan e Details Shows Ai
32. is complete If necessary the BIAS adjustment can be made without affecting the other corrections at any time Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Section 5 Primary Flight Display Screen 5 1 Primary Flight Display Overview Vertical Speed GPS Track Indicator 330 340 350 000 OLO 021 Vg y ane 10 sispeco 144 un i 14 en oss lo _____W 9000 E Lu GINA EE 5 6 50 Altimeter KT Li Lt 120 Et a 30 11 Attitude Bar Slip Skid Ball Altimeter Setting This illustration shows the location of the various flight instruments on the Mini B The Vertical Speed Indicator is a white bar that moves up and down to the left of the altimeter with a digital FPM readout above or below it a 90 FPM descent is shown here The Mini B uses GPS track instead of heading for simplicity It has an internal magnetometer for rough internal calculations of the magnetic field but GPS track is used for navigation because of the high levels of electromagnetic interference near the Mini s location on most instrument panels NOTE All of the features described in this section can be configured on the Primary Flight Display set menu page This section of the manual provides a description and picture of each feature along with instructions for configuring it to match your airplane and personal preferences 26 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics
33. n for the Mini are found on the Set Menu pages To access 1 Press any key to display the softkey labels then press NEXT until a SET MENU softkey appears 2 Press SET MENU to access the main menu as displayed below 3 Turn the knob counterclockwise to move the cursor down the list Press the knob to view the highlighted page or make changes to the values of highlighted settings General Setup Serial port assignments units of measure clock data recording etc Primary Flight Display V speed settings PFD display preferences G meter settings Limits Set up flight timers for total endurance minus reserve and interval reminders to switch fuel tanks Set limits for EFIS Mini minimum and maximum bus voltage Display Unit Maintenance Display software updates settings backup nav database updates other internal functions AHRS Maintenance AHRS software updates gyro amp magnetometer raw data Altimeter Calibration Calibration page for the altimeter Display Unit Maintenance AHRS Maintenance Altimeter Calibration SAVE CANCEL Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 4 3 Set Up Your General Preferences 20 Access the Set Menu gt General Setup page Follow the guidelines below Initial Menu Timeout sec This setting determines the length of time the softkey labels stay on the screen before a selection is made We recommend setting it to at least 5 seconds until you learn the system U
34. ng Mini Software We continually improve our EFIS systems features controls graphics and integration with third party equipment After a certain period of beta testing we will periodically release new software updates for our systems You may choose not to update your software but we recommend it for optimal performance of your system 45 e WARNING Always thoroughly test your new software updates in VFR conditions until you are confident that your display units AHRS and all connected third party equipment will work properly under all circumstances Never fly IFR with new software updates until you have thoroughly tested all functions of the display units AHRS and all interfacing third party equipment especially navigation equipment A 1 1 Locate the New Software on the GRT Website Ii 2 Go to the GRT Avionics website www grtavionics com Under the Support menu click on Software Updates to take you to the Software main page or select directly from the popup list to access the website page dedicated to your EFIS system software The dedicated Mini software page has a link for you to download the latest software for your EFIS system It may also have a link to any available beta software that you should ONLY download if you would like to experiment with untested features Software available for the Mini includes Display Unit software adds new features and corrects bugs in the display itself Usually released every fe
35. ng engine start can cause the Mini to reboot An installed backup battery will dampen this effect but it is good wiring practice to isolate EFIS avionics from the starter circuit Circuit Breaker Power supplied to the Mini must pass through a fuse circuit breaker or system such as a Vertical Power electronic circuit control system It should be sized to allow at least 1 2 amp At full brightness the Mini consumes approximately 1 4 amp The Mini contains internal thermally activated fuses to protect the equipment from internal electrical faults Power Inputs The Mini has one power input to be connected to the aircraft s electrical system plus an option for an internal backup battery which is charged through the main power input Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Voltage Monitor The Mini monitors its power input and backup battery level A warning will flash to annunciate the loss of any power source that was provided and is expected to be working according to the General Setup menu Ground Connection The cable assembly provided includes 22 gauge wire for the ground return of the Mini This will result in a voltage drop of about 0 015 V foot which is acceptable for wire lengths up to 10 feet 2 4 Inter Display Communication GRT display units communicate between themselves so that most entries made during flight such as flight plan information altimeter setting and screen dimming can be m
36. o a black box Because demo files record all the data from the AHRS magnetometer and other sensors during flight they are also useful for our techs to help customers solve problems 7 2 1 How to Take a Snapshot 1 Go to SET MENU gt General Setup 2 Scroll to the bottom of the screen and find SNAP Button Highlight it and select YES 3 SNAP Button Saves Menu Select YES to always display the softkey labels and NO to never display softkey labels in the screenshots 4 To imprint the filename on the snapshot image select YES for Show DEMO Filename 5 Save all settings Your display unit will now have a SNAP button on many screens where there is an empty softkey Notice that it will also display a SNAP button on menu screens This can be very useful for recording settings in picture form to share with your friends ie Autopilot gain settings etc or sending them to us for troubleshooting 6 To take the picture simply press SNAP to save the screen image to the installed USB stick Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 43 7 2 2 Demo Recordings Demo recordings can be recorded on a one by one manual basis or you can set up your Mini to automatically record every flight Files are not overwritten so eventually you will need to either erase the USB stick or install a new one Most flights average less than 1 MB minute This means that if you have a 2GB USB stick you can re
37. omatically load into the Mini if the inter display serial link is connected 38 SELECT ALE FOR IMPORT KARBKTVC SID ROD3 fpl KARB KTVC SID ROD3 gpx KGRR KMSP STAR EAUS fpl KGRR KMSP STAR EAUS gpx KGRR SS CUSTOM fp Load Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 6 3 Airport Facilities Information amp Radio Tuning Information about airports and navaids in the navigation database is available on the Mini on the Details page Select the airport or navaid from the Active Flight Plan page 6 3 1 To view airport or navaid details 1 Press FLIGHT PLAN softkey to bring up the Active Flight Plan page 2 Turn the knob to highlight the airport or navaid in the flight plan list 3 Press the knob to activate the sidebar cursor above the knob Highlight DETAILS and press the knob The information display is shown below DETAILS KSYI Hev 801 BOMAR HELD SHELBYVILLE MUNI 3 27 18 36 5503 x 100 Hard Fuel LOOLL Lat N35 33 56 Lon W086 26 55 Mag Var LOW City SHELBYVILLE TENNESSEE FREQ 6 3 2 To send a frequency to a connected serial radio such as an SL30 1 Press FREQ softkey then press SET COM or SET NAV 2 Choose a frequency from the dropdown list and press the knob to select 3 This sends the frequency to the radio Standby window 39 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Section 7 Miscellaneous Features 7 1 Trig TT21 T1T22 Remote Tran
38. onics 7 1 3 Transponder Mode Code Display When the TT22 A B port described above is turned on or a serial port is set up for the Trig TT22 there is a Transponder display box in the lower left hand corner of the EFIS screen under the airspeed tape This box shows the active mode and squawk code 7 1 4 Mode Selection 1 Press any key on the Mini to make the softkeys appear then press XPDR softkey 2 Press the softkey under the MODE column until the desired mode is highlighted Then press EXIT 3 By highlighting the AUTO mode the transponder automatically enters ALT mode when the EFIS senses an indicated airspeed of 35 knots Under 35 knots it assumes ground operation and reverts to the STBY mode 7 1 5 Code Selection 1 Press the XPDR softkey to bring up the Transponder controls 2 Press the CODE softkey to bring up the squawk code entry page shown below 3 Note the cursor under the first digit of the sqauwk code Turn the right knob to change the underlined digit Press the knob to enter the new digit and move the cursor to the next digit e In case of entry error press the knob repeatedly until the cursor comes back to the digit you want to change 4 OR To quickly enter the VFR 1200 squawk code press the 1200 softkey 5 When finished press SAVE 6 OR To exit without changing the sqawk code press CANCEL 0 290 300 310 B50 330 340 350 140 317 tRK 630 Livi 120 4 2000 a 20 ES oe la
39. only name recognized for Mini display software but if the file already exists on your computer the computer may try to rename it MiniUP 1 dat Just erase the 1 5 Repeat steps 3 and 4 for any new AHRS or Air Data software files 6 If desired go to the Navigation Database updates web page also under the Software menu of the www grtavionics com website Repeat steps 3 and 4 above to save the current Free U S Navigation Database file to your USB drive 7 Goto the airplane 8 Power up the Mini Insert the USB drive with the Mini USB adapter into the USB port in the back of the unit or into the USB extension cable if so equipped 46 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 47 A 1 3 Load New Display Software Into the Mini 1 Press the SET MENU softkey Turn the knob to scroll to Display Unit Maintenance Press the knob to select 2 Turn the knob to Load EFIS Software and press the knob The screen prompts you Load EFIS Software ARE YOU SURE Press the YES softkey 3 The display unit will find the software file on the USB drive and upload it When it s finished it will automatically reboot A 1 4 Load New Navigation Database 1 Press the SET MENU softkey Turn the knob to scroll to Display Unit Maintenance Press the knob to select 2 Scroll to Database Maintenance and press the knob to open the page 3 Scroll to Load Navigation Database Push the knob
40. rport Waypoint Details Page for selected waypoint Includes elevation runways frequencies fuel lat long and city See Details Page later in this section for more info Go Direct Go direct to the highlighted waypoint then resume flight plan e PFD On Displays a basic horizon line with airspeed and altitude in the background e External Displays External Flight Plan from a connected external GPS e Copy Copies the current flight plan to the USB stick e Import Displays a list of available GPX flight plans to import from the USB stick Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 6 2 4 Using an External Flight Plan External Flight Plans highlighted by a yellow header strip are read directly from a connected external GPS They can be followed but not edited by the Mini To follow a flight plan on an external GPS 1 2 37 Enter the flight plan and activate it in the external GPS Select the external GPS designated GPS1 or GPS2 during initial setup as the Nav Source for the Mini Press the Flight Plan softkey The Mini will automatically open the External Flight Plan page listing all the waypoints in the active flight plan on the external GPS Press EXIT to follow the flight plan using the GPS CDI and waypoint information on the PFD At any time during the flight e Press COPY to overwrite the current active Internal flight plan with the waypoints for the External Flight Plan This
41. rror GRT Sport_Altimeter_Reading with test set at 30 000 ft If the Mini altitude is less than 30000 ft the Altitude Error is negative Calculate the Pressure Error by multiplying the Altitude Error by 0 819 The result will be a negative number If the Mini altitude is greater than 30000 ft the Altitude Error is Positive Calculate the Pressure Error by multiplying the Altitude Error by 0 795 The result will be a positive number The scale factor is then calculated as follows Alt Scale Factor 42012 42012 Pressure Error The result should be a number greater than 0 9744 and less than 1 0255 Set the Alt Scale Factor as calculated Current Mini software may show ERROR next to Calibrate This can be ignored 24 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 25 10 11 12 13 14 15 Set the altimeter test set back to sea level 0 ft Set the BIAS so that the altimeter reads 0 ft Complete the calibration by setting the altimeter test set to each altitude listed on the calibration page 5000 10000 15000 etc and adjusting the corresponding entry until the altimeter reads this altitude The accuracy of the scale factor adjustment can be verified by noting a small altitude error less than 200 feet is observed with a zero correction at 30 000 feet Adjust the 30 000 foot correction until the altimeter reads 30 000 feet Exit the calibration page Calibration
42. s the Set Menu gt Primary Flight Display page 2 Scroll to Slip Indicator and select ON or OFF as appropriate 3 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 5 7 Flight Path Marker The flight path marker shows where the aircraft will go if all conditions of motion and wind stay the same Shown as a circle with three spikes it is a projection of the aircraft s flight path It combines many data factors including attitude airspeed GPS ground track and ground speed The flight path marker will appear to float about the display as the aircraft pitches and rolls This movement is most evident in strong crosswind or unusual attitudes For example during a properly flown crabbed crosswind approach the heading nose will point to the upwind side but the flight path marker center of mass will be superimposed on the virtual runway because that is where the airplane is going at that particular instant in time 32 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Section 6 Flight Planning amp Navigation 6 1 GPS CDI Bar The GPS CDI Course Deviation Indicator is located at the bottom center of the screen It displays cross track deviation the distance from the aircraft s current position to the course line connecting the previous and next waypoint in the GPS flight plan The cross track deviation is represented by the distance of the vertical magenta bar from the center of the CDI
43. sed Menu Timeout sec This setting determines the length of time before the softkey labels disappear after a selection is made 2 0 seconds is recommended Speed Distance Units Choose your preferred units for the airspeed tape and waypoint information Temperature Units Degrees Fahrenheit or Celsius Clock Turn clock ON to display Enter the difference between your local time and Zulu time Time is kept through the internal GPS DEMO Settings Set up your preferences for data recording off the Mini Flight data also known as Demo files can be set to record onto a USB thumb drive installed in the Mini USB port More information on data recording can be found in Section 7 of this manual SNAP Button Allows a softkey to be used to snap screen shot images in flight as a PNG image file recorded to the installed USB stick Available on many pages that have an unused softkey Show DEMO Filename Shows the file name on the screen when playing back a demo recording on the Mini ALWAYS SAVE your settings before exiting the Set Menu Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 4 4 Setting Instrument amp Magnetometer Mounting Orientation The GRT Mini may be mounted in practically any orientation that is desired This allows it to be mounted in locations that previously were not suitable for attitude instruments and is a feature unique to GRT Avionics The following steps must be performed after mounting the ins
44. should be considered e Good practices for physical installation of the wiring should be followed such as grommets where wires pass through sheet metal considering for chaffing and interference with moving mechanisms etc e Cable lengths should include enough extra length to allow for servicing the equipment For example the cables which plug into the display unit should be long enough to allow them to be connected to display unit with the display unit not installed in the instrument panel e In general routing of the wiring is not critical as the Mini is designed to be tolerant of the electrical noise and other emissions typically found in aircraft Some consideration should be given to avoid routing wires near antennas or other locations that could impart high levels of electromagnetic Signals on the wiring e The checkout procedures outlined in Section 4 must be completed to verify the Mini is not affected by radio transmissions on any frequency Consider the effects of individual component failures in the design of the system as a whole to create redundancy where necessary Power Connections Power Switch No provision is included within the Mini for a power switch If a power switch is desired for the Mini the 12V power should be controlled with the switch not ground It is desirable to have the Mini power off during the engine start if the bus that powers it is used for supplying power to the engine starter Voltage drops duri
45. shown as dashes for extended periods of time more than 5 minutes the attitude data could become less accurate 8 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Figure 1 1 Mini Dimensional Drawing all models rr 4 100 GRT Mini 01 Mar 2014 Notes e Cutout dimensions 4 15 x 3 30 e Unit is centered within the cutout e Mounting screws are 4 e Mounting bolt pattern is centered on bezel outline 4 350 3 250 Di 3 940 9 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 1 5 Basic Controls of the Mini The Mini has a single knob that can be pressed and turned as well as four buttons The buttons are referred to as softkeys because their functions change as screen views and menus change Each button and knob has a label that defines its function If there is no label present the button has no function on that particular screen When the softkey labels are not visible press any button to make the labels appear You can define how long the labels are displayed between button presses refer to Section 4 3 General Preferences for more information The Mini B has a Primary Flight Display page a Flight Plan entry page and the Set Menu The Flight Plan entry pages and sofkteys are described in Section 6 while the Set Menu is described at the beginning of Section 4 1 5 1 Primary Softkeys 1 Press any button to display the first level softkeys shown below
46. sponder The Mini can act as the control head for a Trig TT21 or TT22 Remote Transponder See Section 2 5 of this manual for wiring information 7 1 1 Activating TT22 Setup on the Mini 1 Go to Set Menu gt General Setup 2 If using the dedicated TT22 Port with No Adapter scroll to TT22 A B Port and select ON This activates and automatically sets up the dedicated TT22 port 3 If using an RS 232 serial port with GRT Trig Adapter set the Input and Output of the wired serial port to TT22 and the baud rate to 9600 4 Follow the instructions in the GRT Trig TT21 22 Supplement for full setup and checkout procedures 7 1 2 Transponder Mode Descriptions STBY The transponder is on but will not reply to any interrogations AUTO The transponder is in GND until reaching 35 knots on takeoff when it changes to ALT mode automatically It reverts to GND mode upon landing when airspeed goes below 35 knots GND available in AUTO select only Transponder responds to Mode S interrogations from ground surveillance radar ON The transponder will respond to all interrogations but altitude reporting is suppressed ALT The transponder will respond to all interrogations including Mode C altitude reporting 010 020 030 040 050 0 023 TRK goo Z7 W i o 1 o n T 4 40 14 iL nni 60 13 a Di gs 4 ALT Hees on Exit 29 92 AO Revision A3 Mini B Installation Setup amp User Manual GRT Avi
47. ta points 7 2 3 USB Flight Data Logger Black Box feature Because the demo files must be prompted to end and save the recording data at the very end of a crash sequence can go unsaved Additionally the Demo file recording process loses data between each recording sequence The USB Flight Data Logger feature was designed to provide a seamless recording of a limited number of important flight data parameters that are continually written to the USB stick Go to SET MENU gt General Setup gt Demo Settings Press the knob to open the page USB Flight Data Logger On Off When On the Mini will record data when any of these are true airspeed is valid above the sensor minimum ground speed is above 5 knots RPM N1 input is non zero fuel flow is non zero USB FDL Record Interval ms Data samples are recorded at this interval 200 30000 ms in steps of 200 ms Default is 1000 ms USB FDL Save Interval s The recorded data is written to the USB flash drive at this interval 0 300 seconds Default is 60 seconds If set to zero the file is only written when the internal buffer fills up or the data logger stops For a more continuous black box recording set it to 5 seconds or less The data is saved as a CSV file on the USB stick called GRT Flight Data Log csv and can be opened and studied using any spreadsheet program Revision A3 Mini B Installation Setup amp User Manual GRT Avionics Appendix A 1 Updati
48. tically OFF start automatically stop automatically or start and stop automatically When automatic data recording is enabled the Mini will start and stop save automatically when the Auto Start and Auto Stop menu settings are reached whether it s a specified RPM Airspeed Ground Speed or N1 for turbines Do not turn off the Mini before or immediately after these limits are reached it will take the display unit a few seconds to write the data from the last file recorded to the USB stick Start and save recordings manually In flight or on the ground press NEXT repeatedly until you see the DEMO softkey START starts recording the demo STOP ends and saves the demo When manually recording do not forget to STOP the demo as this is the action that saves the flight from temporary internal memory to the USB stick Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 44 Using the Demo Recordings Play demo recordings back on the Mini From the PFD screen press NEXT until you see the DEMO softkey Press it to highlight PLAY to run the demo If multiple demo files are on the USB stick you will be taken to a menu page where you can select the file to play Dump demo data into a spreadsheet Download the GRT DECODE program from the GRT Avionics website Support gt Software Updates gt Miscellaneous Software amp Utilities Open the program and use it to open the demo file It will create a spreadsheet with all of the da
49. trument 1 After securely mounting the instrument adjust the orientation orientation settings to account for the instrument s roll pitch and yaw orientation See the section Setting Instrument Orientation for a detailed description of how this is accomplished The accuracy of the yaw setting is not critical but should be within 2 degrees Optional Fly the airplane When in level flight at cruising speed adjust the roll and pitch orientation of the instrument as necessary to provide a 0 degree roll and pitch indication Do not adjust the yaw setting This setting is made only by measurements of the instruments mounting angle at the time of installation Note Changes to the pitch indication may be made after calibration using the pitch ladder offset This will not alter the orientation settings 4 4 1 Setting the Instrument Orientation 21 The orientation of the instrument is set using the Set Instrument Orientation menu This is accessed by selecting the Set Menu AHRS Maintenance and scrolling down to Set Instrument Orientation Zero Roll and Pitch Select this setting to set the instrument orientation to zero roll and pitch For tricycle gear airplanes when on level ground this may be sufficient to orient the instrument in roll and pitch If the airplane is not on level ground or if it is a tail dragger the roll and pitch adjustments can be used to fine tune these adjustments Roll Adjustment
50. w months as new features are created Navigation Database Software Releaed every 56 days to update the FAA database of airports navaids fixes man made obstacles and airport facilities information in the DETAILS pages AHRS software occasional releases Improves and corrects bugs in the internal AHRS Air Data Software occasional releases Improves and corrects bugs in the pitot static sensors Servo Software rare releases Improves and corrects bugs in GRT digital servos Mini X AP A 1 2 Load the Software onto the USB Stick Your Mini unit came with a SanDisk USB Thumb Drive It s a small rectangular device that looks like this When you plug it into your computer s USB port it acts as an additional hard drive to store files It will usually be listed as Removable Disk with a letter designation in your computer s directory Follow these steps to load the files onto your USB drive on a Windows computer Mac computers may behave differently but will essentially use the same process Then you will load it into your displays Revision A3 Mini B Installation Setup amp User Manual GRT Avionics NOTE The Mini uses a Mini USB port It comes with a USB to Mini USB adapter to el gt computer Removable Disk D 6 Search Removable Disk D Pp accommodate a standard USB stick Be sure to Orsanze New folder s bring this along when you go to the airplane to 4 Favorites E Desktop update t
51. will convert the external flight plan to an internal flight plan allowing editing of the waypoints e Highlight INTERNAL with the knob and press the knob to switch back to an Internal flight plan Remember to also switch the GPS Nav Source on the PFD ID RNG BRG ETE Bu KLAL 18 5 021 0 11 KMGR 207 8 339 2 53 KSY 299 3 340 6 45 Revision A3 Mini B Installation Setup amp User Manual GRT Avionics 6 2 5 Importing a GPX Flight Plan Many apps and GPS units create and store flight plans in GPX format The Mini like the bigger GRT EFIS systems can read GPX files placed onto the USB stick To import and use a GPX flight plan L Use your favorite computer flight planning program such as iFlightPlanner com or the AOPA Flight Planner to create and save a flight plan in GPX format to your USB thumb drive Insert the USB drive into the USB port of the Mini Press the FLIGHT PLAN softkey to bring up the Flight Plan page Turn the knob to highlight Import Flight Plan and press the knob to activate Press UP or DOWN softkey to scroll through the list of files on the USB stick until you see the GPX file you are looking for Multiple file types will be displayed on the screen Highlight the one you want press the LOAD softkey and the flight plan waypoints will appear in sequence on the Mini Active Flight Plan page NOTE GPX flight plans imported and activated in another connected GRT display unit will aut

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