Dynon Avionics SkyView System Installation Guide - Manual (Page 96)

SV-ADAHRS-200/201 Installation and Configuration
5-4 SkyView System Installation Guide - Revision S
Pneumatic Ports
The AOA, pitot, and static ports on the SV-ADAHRS-200/201 are equipped with 1/8” NPT
Female fittings. To attach your pitot and static lines to the module, you must use standard 1/8”
NPT male fittings at the end of each of the lines.
SkyView’s attitude calculation requires airspeed from pitot and static. A GPS
source can be used as a backup if the pitot and/or static source fails, but should
not be the primary source.
Do not use ferrous pneumatic fittings.
To install, simply connect your static and pitot sources to the SV-ADAHRS-200/201. If you are
performing a retrofit installation, consider “teeing” off of existing lines using a tee fitting.
Reference the sticker on top of the respective module for pneumatic port identification.
Use a wrench to secure the mating pressure line fittings to the corresponding locations on the
SV-ADAHRS-200/201. 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-200/201.
Compass Calibration
Dynon calibrates every SV-ADAHRS-200/201 during manufacture. After the aircraft
build is complete, an in-aircraft compass calibration must be performed. Until the
on-ground or the in-flight compass calibration is performed, SkyView will display a
Caution message: NEED COMPASS CAL. The compass calibration procedure will
calibrate all SV-ADAHRS-200/201s in the SkyView network.
In SkyView v12.0, an optional in-flight compass calibration procedure was added. Performing
the in-flight compass calibration after the on-ground compass calibration can increase the
accuracy of the compass’ magnetic heading. The best compass performance will be achieved by
perform the on-ground compass calibration, then performing the in-flight compass calibration.
It is not required that the in-flight compass calibration be performed immediately after the on-
ground compass calibration.
The on-ground compass calibration requires pointing the aircraft in four directions and
acquiring data at each direction. An accurate method of aligning the aircraft with magnetic
North, East, South, and West, such as an airport’s compass rose, is required. During the
compass calibration, the aircraft’s configuration and major systems should be in a state that
resembles flight conditions (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
used in flight should be on).