Version 16.10 AF-6600 AF-5000 Series Install Manual 26
3.2 SV-ADAHRS-200/201
The Dynon SV-ADAHRS-200/201 Air DAta/attitude & Heading Reference System
module is where the EFIS display gets the following information:
• Airspeed
• Altitude
• Vertical Speed
• Outside Temperature
• Slip Ball Data
• Pitch Angle
• Roll Angle
• Compass Heading
The ADAHRS provides all six-pack gauges in electronic form on the EFIS display. The SV-ADAHRS-200 or SV-
ADAHRS-201 connects to the SV-Network. The SV-ADAHRS-200 (P/N: 72200) is designed to be the primary ADAHRS
in the system and the SV-ADAHRS-201 (P/N: 72201) is designed to be the backup ADAHRS. Both units have the same
performance specifications and require a separate outside air temperature probe (OAT).
Proper installation of the SV ADAHRS module(s) is critical. PFD performance is significantly
linked to a proper ADAHRS installation. The installation location must meet all of the mechanical,
magnetic, orientation, and environmental requirements detailed below.
ADAHRS with Respect to Center-of-Gravity
The location should also be magnetically benign. Given that it may be difficult or impossible to avoid all
sources of magnetic interference, it is possible to characterize and compensate for small, static magnetic
fields with calibration. Calibration cannot, however, compensate for dynamic magnetic fields (e.g., AC
currents, non-constant DC currents, and non-stationary ferrous material such as electric turn coordinators
and control surfaces). Thus, you must avoid mounting the module close to sources of dynamic magnetic
fields, avoid wires that carry large amounts of current, and use non-magnetic fasteners for installation. AFS’s
general rule of thumb is that 1 to 2 feet between the module and sources of magnetic fields is generally good
enough, but 2 or more feet is better.
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