SV-ADAHRS-20X Installation and Configuration
SkyView System Installation Guide - Revision K 5-5
Use a wrench to secure the mating pressure line fittings to the corresponding locations on the
SV-ADAHRS-20X. Do not over-tighten.
If you purchased Dynon’s AOA/Pitot Probe, note that it has pitot and AOA ports, but no static
port. You will need to provide your own source of static pressure for the SV-ADAHRS-20X.
Magnetic Heading Calibration
Dynon calibrates every ADAHRS during manufacture, however a separate
calibration is required to accurately measure magnetic heading in an aircraft
installation. The calibration procedure in this section simultaneously calibrates
every SV-ADAHRS-20X in the SkyView network.
Magnetic heading calibration requires pointing the aircraft in four directions and acquiring data
at each direction. The aircraft’s configuration and major systems should be in a state that
resembles flight conditions during calibration (i.e., the canopy should be closed, the aircraft’s
pitch attitude matches SkyView’s attitude depiction, the engine should be running, and all
electronic devices should be on). An accurate method of aligning the aircraft with magnetic
North, East, South, and West, such as an airport’s compass rose, is required.
Tail wheel equipped aircraft can be calibrated in their normal nose up ground
attitude as long as the SkyView attitude display shows the correct corresponding
nose up attitude.
A working GPS receiver must be connected to the SkyView system in order to
calibrate magnetic heading. SkyView uses GPS-derived position information to
calculate magnetic intensity, declination, and variation.
Use the following procedure to calibrate the SV-ADAHRS-20X compass:
1. Turn on the SkyView system and allow it to warm up for several minutes.
2. Move the aircraft into position so that it is convenient to orient it in the four cardinal
directions.
3. Enter the Setup Menu on the SkyView display and go to the Compass Calibration Wizard
(SETUP MENU > HARDWWARE CALIBRATION > ADAHRS CALIBRATION > COMPASS
CALIBRATION). Note, GPS data on the Compass Calibration Page must be green. If it is
red, GPS data is not valid.
4. Orient the aircraft to North, South, East, or West. When the aircraft is stable at the
chosen orientation, the page will say READY TO TAKE DATA FOR: [DIRECTION].
5. Press ACQUIRE and wait for data collection to reach 100%.
6. Rotate to the next cardinal direction and repeat steps 4 and 5.
7. CALIBRATION COMPLETE appears when calibration is complete. Press FINISH to return
to menu navigation mode.
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