The calibration uses the earth’s gravity as a 1g reference signal. The calibration procedure is completely automated and can be performed at any time. It requires the user to set the instrument in successive stable positions with its X, Y and Z axes aligned vertically while the instrument takes the reference measurements.

At any time the calibration can be checked by using the static acceleration measurements. The following procedure can be used to check the calibration:

1.Place the instrument in a position where the X axis is in the vertical position and axes Y and Z are horizontal. Read the static acceleration (Static tab in Instrument_Manager). If the calibration is correct the static acceleration along the X axis should be 1g. The static acceleration along the Y and Z axes should be 0g.
2.Place the instrument in a position where the Y axis is in the vertical position and axes X and Z are horizontal. Measure the static acceleration. If the calibration is correct the static acceleration along the Y axis should be 1g. The static acceleration along the X and Z axes should be 0g.
3.Place the instrument in a position where the Z axis is in the vertical position and axes X and Y are horizontal. Measure the static acceleration. If the calibration is correct the static acceleration along the Z axis should be 1g. The static acceleration along the X and Y axes should be 0g.