A vane-type camshaft phaser includes a rotor having a plurality of vanes disposed in a stator having a plurality of lobes, the interspersion of vanes and lobes defining a plurality of alternating valve timing advance and valve timing retard chambers. The invention can be utilized to make cushions for use with separately manufactured upholstery covers as well as for pour-in-place or foam-in-cover upholstered cushions. Thereafter, the increment is set to a second voltage, which is maintained until the threshold voltages reach a target value. The free induction decay signal is then detected from the sample volume.