Remote Compass
EDC-D10 Installation and Calibration 1
External Magnetometer EDC-D10 Installation and Calibration
Dynon Avionics
August 28, 2003
Installation
The Dynon Avionics external magnetometer EDC-D10 must be mounted according to the
following instructions for it to function correctly. All mounting hardware needs to be
non-ferrous material such as aluminum, plastic, or brass. Many stainless steel screws are
alloys with some ferrous material in them. If the item is attracted to a magnet, it should
not be used in the installation. The EDC-D10 needs to be mounted in a location as free
from magnetic interference as possible. This means away from any ferrous nuts, bolts,
and screws, aircraft tubing, and wires carrying any appreciable current such as strobe
light wiring.
The EDC-D10 must be mounted such that its orientation is as closely aligned with the
EFIS-D10 as possible. It should be mounted with the long axes parallel to the wings, the
electrical connector facing forward (towards the nose of the airplane), and the mounting
tabs on the bottom. The bracket used to hold the EDC-D10 must account for all
differences in angles between the EFIS-D10 and the EDC-D10. This includes pitch, roll,
and yaw. We recommend you use an electronic level that reads to 1/10
th
of a degree to
make sure the EDC-D10 is aligned with the EFIS-D10 in pitch and roll to better than
2/10
th
of a degree. Wiring instructions are included in the EFIS-D10 Installation Guide
on page 10.
Wiring Verification
Correct wiring installation can be easily verified once completed. Power on the EFIS-
D10 with the EDC-D10 connected to it. Observe the displayed heading and then hold
one of the earpieces of a headset near the front of the EFIS-D10. If the EDC-D10 is
correctly wired, you should see no change in the displayed heading (more than 5 degrees)
when the headset earpiece is near the EFIS-D10. If you see a substantial change in
heading, there is a communication problem between the EFIS-D10 and the EDC-D10.
Calibration
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.
2) Laptop with the latest version of the EFIS Support Program installed (to input the
magnetic dip angle into the EFIS.)
3) Magnetic Dip angle known. Refer to the EFIS-D10 Installation Guide or the
EFIS Support Program help files for information about determining the magnetic
dip angle and loading it into the EFIS-D10.
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