Ar200 Calibration (Linearization); Magnetic Deviation; Ar200 Calibration Settings - Raymarine AR200 Installation Instructions Manual

5.2 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 and the Earth's magnetic fields. This 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 will fill to indicate completeness, the bar 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 interference can be caused by object 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

Magnetic deviation

Magnetic deviation is the error induced in a compass caused by interference from local magnetic
fields.
The automatic linearization process results in a deviation value being set for your AR200. If
Augmented Reality flags in the Video app are not aligned with their onscreen objects or the compass
is out of alignment you should check the AR200's current calibration settings.

AR200 calibration settings

The calibration settings page provides access to the AR200's compass calibration options.
The AR200 calibration page can be accessed using your Data master MFD; from the Homescreen
select: Settings > Network > Data sources > Heading > AR200 > Calibrate.
System checks and troubleshooting
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