Dynon ADAHRS (First) for Skyview EFIS System

ADAHRS stands for Air Data/Attitude/Heading Reference System. The SkyView ADAHRS module uses MEMS sensor technology to accurately measure inertial, magnetic, and air data. These provide the data necessary to drive the Artificial Horizon/Synthetic Vision, Airspeed, Altitude, Vertical Speed, Slip, Turn Rate, Angle of Attack, and Gyro-Stabilized Heading. Additionally, Outside Air Temperature is obtained from the SV-OAT-340 Sensor which is connected to the ADHARS.

You may have one, two, or more ADAHRS in your SkyView System. If one fails, the backup ADHARS will provide data to the SkyView Display(s). To maintain complete redundancy, a separate SV-OAT-340 Sensor should be connected to each ADAHRS. Note that functionally, the SV-ADAHRS-200 and the SV-ADAHRS-201 are the same. The only difference is that the SV-ADAHRS-201 requires an SV-ADAHRS-200 in the same system in order to be activated. In the event that the SV-ADAHRS-200 is removed from the system, the SV-ADAHRS-201 will remain activated for an additional 30 flight hours before it becomes deactivated.

A SkyView Network Cable is used to connect an ADAHRS Module to a Display. One ADAHRS will provide data to as many Displays as are connected in the SkyView System. However, for redundancy, you may want to provide one ADAHRS for each Display.

Each ADAHRS contains:
3 - Pneumatic ports for Pitot, Static, and Angle of Attack
1 - SV-OAT-340 Outside Air Temperature Sensor
1 - 9-Pin DIN Connector for the SkyView Network
2 - 2-Pin Connector for SV-OAT-340 Sensor

The ADAHRS internal sensors measure rotational motion and acceleration about the CG of the aircraft. In order to be maintain accuracy, the ADAHRS should be mounted within six feet laterally (side-to-side) and twelve feet longitudinally (front-to-back) of the aircraft CG. Quite often the best place to mount the ADAHRS is in the fuselage behind the cockpit area. But other locations can work.