Dynon Avionics EFIS-D10 Installation Guide - Manual (Page 19)

EFIS-D10 Installation Manual
EFIS-D10 Installation Guide Doc Num: 100006-000 Rev. C
9/11/2003 Page 19 of 24
maneuver the plane smoothly through 540 degrees of heading change at a rate of 20 to 30
seconds per 90 degrees of change. At the end of the maneuver, the airplane will be
pointing magnetic South. If at any time, you make a mistake, align the aircraft to point to
magnetic North and repeat the process starting with pushing the GNDNRT button. When
the 540 degree heading change maneuver has been completed, press the AIRRGT button.
2. Leave the PC connected to the EFIS with the MAGCAL program running and proceed to
take off for the in-flight part of the calibration. After reaching a safe altitude, head the
plane as close as possible to magnetic North. Press the AIRRGT button, continue
holding a steady heading (North) for 10 seconds, and then make a 30 degree banked turn
to the right for 540 degrees. The maneuver ends with the aircraft pointing South. Fly the
maneuver as smooth as possible since this will give you better results. At the end of the
maneuver, while still pointing South, press the AIRLFT button.
3. Maneuver the aircraft to point to magnetic North again. Press the AIRLFT button,
continue holding a steady heading (North) for 10 seconds, and then make a 30 degree
banked turn to the left for 540 degrees. The maneuver ends with the aircraft pointing
South. Fly the maneuver as smooth as possible since this will give you better results. At
the end of the maneuver, while still pointing South, press the END button.
4. After pressing the END button, the PC will calculate the required magnetic calibration
values and upload them into the EFIS-D10. This will result in the EFIS-D10 screen
going dark (it may display LOADING on the screen) followed by the EFIS-D10 resetting
back to normal flight.
5. You can now exit the EFIS-D10 Magnetic Calibration program and shut down the PC.
At this point the calibration is complete. We suggest you evaluate the performance of the EFIS-
D10 heading feature, preferably on a compass rose, and decide if the performance is acceptable
to you. If the resultant compass accuracy is not acceptable, you can either repeat the calibration
process attempting to fly the maneuvers more smoothly, or purchase, install, and calibrate the
Dynon Avionics EDC-D10 Electronic Digital Compass.
You will need to repeat this process anytime you move the EFIS-D10 (or external magnetometer,
if you have chosen this option) to a new location in your plane or change the magnetic or
electrical characteristics of the nearby environment (i.e. adding or removing other electrical
instruments). Changing geographic location should have no effect on your heading readings after
a user calibration.
External EDC-D10 Magnetic Field/Heading Calibration (on ground only)
The procedure for in-plane calibration of the EDC-D10 is different than described in the EFIS-
D10 Installation Guide. It involves pointing the aircraft in four directions, taking data at each
location using a laptop connected to the EFIS-D10, and having the laptop calculate the
calibration constants and upload them to the EFIS-D10.
To perform the calibration, you will need the following:
1) EFIS-D10 and EDC-D10 installed in aircraft with PC connection to the EFIS-D10
available.