PNI SeaTRAX - Manual (Page 31)

PNI Sensor Corporation DOC#1018154 r02
SeaTRAX User Manual Page 26
the <Take Sample> button will indicate to the module to take a sample once the
minimum requirements are met.
Calibration Points
The user can select the number of points to take during a calibration. The minimum
number of points needed for an initial calibration is 10, although a hard-iron-only
(re)calibration can be performed with only 4 samples. The module will need to be
rotated through at least 180 degrees in the horizontal plane with a minimum of at least
1 positive and 1 negative Pitch and at least 1 positive and 1 negative Roll as part of
the 12 points.
Calibration Method Buttons
Full Range Calibration - recommended calibration method when >45° of tilt is
possible. The minimum recommended number of calibration points is 12.
Hard Iron Only Calibration - serves as a hard-iron recalibration to a prior
calibration. If the hard-iron distortion around the module has changed, this
calibration can bring the module back into specification. The minimum
recommended number of calibration points is 6.
Limited Tilt Range Calibration - recommended calibration method when >5° of tilt
calibration is available, but tilt is restricted to <45°. (i.e. full range calibration is not
possible.) The minimum recommended number of calibration points is 12.
2D Calibration - recommended when the available tilt range is limited to ≤5 °. The
minimum recommended number of calibration points is 12.
Accel Calibration Only – The user should select this when accelerometer calibration
will be performed. The minimum recommended number of calibration points is 18.
Accel Calibration w/Mag – The user should select this when magnetometer and
accelerometer calibration will be performed simultaneously. The minimum
recommended number of calibration points is 18.
6.3.10 Default
Clicking this button reverts SeaTRAX Studio program to the factory default settings.
6.3.11 Retrieve
Clicking on this button causes SeaTRAX Studio to read the settings from the module and
display them on the screen.