Artemis BP00707, Руководство пользователя

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4.8 Calibrating the Compass
The Artemis digital compass uses three magnetic sensor elements (one on each axis)
to measure the surrounding magnetic field and determine the direction or Magnetic
North.
However, the presence of ferrous material or changes in the magnetic environment
around Artemis may cause an error to be present in the compass heading displayed,
indicating that the sensors should be recalibrated.
To calibrate the compass…
 Switch to the Settings Application.
 Choose the “Show Compass” option to bring up the Compass Display.
 Press the F1/Up button to start the calibration procedure.
 Follow the instructions on the display to work through the calibration procedure and
calibrate the compass.
During calibration, you will be required to rotate Artemis around its three axis (pitch,
roll and yaw). It helps if you imagine Artemis being inside a sphere, and during
rotation the front of Artemis is painting the inside of the sphere as you move it around.
The aim is to rotate and roll Artemis through as many orientations as possible in three-
dimensional space, and as you do so the compass is attempting to measure the
magnetic field for each orientation.
The figures below give an indication as to the types of movements you should make
around the axis, and this should be done in a variety if different orientations (i.e.
holding Artemis horizontally, vertically, upside down etc)…