VAL Avionics NAV 2000 Installation Guide download pdf (Page 94)

SV-ADAHRS-200/201 Installation and Configuration

5-4 SkyView System Installation Guide - Revision R

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.

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-200/201 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 with a view of the sky to acquire GPS data 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.

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VAL Avionics NAV 2000 Installation Guide Page 94