AR200 Calibration (Linearization)

To enable accurate placement of Augmented Reality (AR) flags on the camera’s video feed, the AR200’s AHRS sensors need to compensate for local magnetic fields, as well as the Earth’s magnetic fields.

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Calibration is achieved using an automatic linearization process. The linearization process starts automatically after your vessel has turned approximately 100°, when travelling at a speed of between 3 to 15 knots. The linearization process requires no user input, however at least a 270° turn is required before linearization can be completed. The duration of the linearization process can be decreased by completing a full 360° turn, when travelling at a speed of between 3 to 15 knots. The linearization process can also be restarted at anytime.

In the Video app the Linearization progress bar is displayed when linearization is in progress. The bar is filled to indicate completeness, and will turn Red if the process is paused or otherwise interrupted.

The time taken to complete the linearization process will vary according to the characteristics of the vessel, the AR200’s installation location, and the levels of magnetic interference present at the time linearization is performed.

Magnetic interferenceMagnetic interference can be caused by objects onboard your vessel, such as:

• Speakers

• Electronic equipment

• Electrical cabling

• Metal bulkhead or hull

Magnetic interference can also be caused by external objects in close proximately to your vessel, such as:

• Metal hulled vessels

• Underwater electrical cables

• Marine pontoons