There are two ways to obtain headinginformation from the iLevil, dependingon the navigation App of choice,
youmay choose between the following:
-True Track: Headinginformation basedon GPS track.
-Magnetic Heading:Headinginformation determined by a combination of 3-axis magnetometer and gyros
that form part of the internal AHRS.
When using Magnetic Heading, it is important to know the following:
•Magnetic fields caused by other Magnetic Compass etc, may affect the AHRS heading.
•Verify your magnetic heading after following alignment and installation procedures:
(use AHRS Utility App -> options -> Heading -> Use magnetic)
•In case of magnetic deviation, the internal AHRS will slowly learn your aircraft configuration during flight to
compensate.
This learning process requires the aircraft to turn both clockwise and counter clockwise for at least40 seconds.
•After turning, or at the end of your flight, verify the magnetic headingagain using the AHRS Utility App.
•If the AHRS was able to successfullycompensate for errors, youmay store this data inside the
iLevil and it will use this new configuration on the next power cycle:
(AHRS Utility -> Device Config -> Enable Configuration -> Save Mag Data).
•If AHRS was unable to compensate for errors after turns, try using a different location.
•ERASE Magnetic data using AHRS Utility before attempting a different location or moving
iLevil to a different aircraft or environment.
Magnetic Heading
