VAL Avionics NAV 2000 Installation Guide download pdf (Page 100)

SV-ADAHRS-200/201 Installation and Configuration

5-10 SkyView System Installation Guide - Revision R

certificate itself. Similar to the above, you will need to redeem your certificate by

visiting http://license.dynonavionics.com with your SkyView display model and serial

number ready. Alternatively, you can call Dynon Avionics directly at 425-402-0433 to

redeem a certificate.

Other ADAHRS Calibrations

AOA/Pitot Probe Calibration

If the Dynon AOA/Pitot probe is installed, familiarize yourself with the AOA calibration

procedure before flight by reading through the instructions in the AOA Calibration Wizard

(SETUP MENU > HARDWARE CALIBRATION > ADAHRS CALIBRATION > AOA CALIBRATION).

Once you are flying straight and level at a safe altitude for stalls, go into the AOA Calibration

Wizard (IN FLIGHT SETUP MENU > AOA CALIBRATION…) and follow the onscreen instructions to

calibrate angle of attack while in flight.

More information about the physical installation of the AOA/Pitot probe can be found in the

Angle of Attack Pitot Probe Installation and Configuration section of this manual.

Altitude Adjust

There is a single point altitude adjustment, located in SETUP MENU > HARDWARE CALIBRATION

> ADAHRS CALIBRATION > ALTITUDE ADJUST that adjusts SkyView’s barometric altimeter. This

adjustment affects both the displayed altitude and the encoded altitude that is sent to other

devices. It should only be adjusted if altitude is found to be incorrect (by comparing it against a

known source or field elevation, AFTER the BARO setting has been set to correctly to known

atmospheric conditions) after SkyView has fully warmed up.

Zero Pressure Airspeed Calibration

This calibration routine samples pitot and static pressures in a windless environment to allow

SkyView to provide the best indicated airspeed readings that are possible at very low airspeeds.

It is not a required calibration step, but performing this calibration may improve airspeed

accuracy at very low indicated airspeeds. It is important that this calibration is done in an

absolutely windless environment, such as a closed hangar. Additionally, before performing this

calibration, cover both the pitot and static ports with a sock or cloth to minimize airflow

WITHOUT putting any air pressure on the pitot or static ports.

Performing Pitot-Static Checks

Background

Dynon ADAHRS units use airspeed in the calculation of attitude (or GPS ground speed when

airspeed is unavailable). The internal rate sensors are monitored and calibrated in flight using

feedback from the accelerometers and from airspeed to achieve a highly accurate attitude

solution.

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VAL Avionics NAV 2000 Installation Guide Page 100