Dynon Avionics SkyView System Installation Guide - Manual (Page 99)

SV-ADAHRS-200/201 Installation and Configuration
SkyView System Installation Guide – Revision S 5-7
Figure 26 – In-flight Compass Calibration Menu
5. Push the START button to begin the calibration.
6. Observe the NEW CALIBRATION section of the menu. The goal of the in-flight compass
calibration is to achieve a compass calibration “quality” of at least 100.
7. The minimum maneuvers for in-flight compass calibration is one 360° turn clockwise,
and one 360° turn counterclockwise. Flying additional maneuvers incorporating pitch
and roll changes will likely improve the in-flight compass calibration.
8. When the quality is as high as you can obtain (above 70, the minimum), push the FINISH
button to complete the in-flight compass calibration. Flying additional maneuvers
beyond the minimum may improve the in-flight compass calibration, but will not make it
worse.
QUALITY of 70-99 is acceptable, but not optimum; the accuracy of your magnetic heading may
not be acceptable. Additionally, a sub-optimal QUALITY may have the following effects:

Degraded performance of the SkyView Autopilot (AP) in HDG and NAV modes

Degraded accuracy of wind direction and velocity
If, after multiple attempts at in-flight compass calibration, you cannot achieve QUALITY of at
least 70, the compass sensor in the SV-ADAHRS-200/201 cannot sense the earth’s magnetic
field with enough precision (excessive magnetic interference). It should be considered to
change the location of the SV-ADAHRS-200/201.