Due to integration of the accelerations and velocities, a drift might occur in the displacements. When the drift correction is selected for an imported data table, this drift (final displacement in the signal ≠ 0) is corrected by applying a low frequency motion from the beginning of the phase of the calculation and by correcting the acceleration accordingly.

For a correct drift correction, the phase time interval should be the same as the input signal’s time interval, otherwise the integration of the accelerations and velocities with the drift correction will not give a correct drift correction at the end of the phase.