Spindle Error Analyzer Tests Performed:
Target Reversal (Donaldson Reversal)

Target Reversal allows data from two test runs to be combined in such a way that form/shape errors in the target are separated from the synchronous error motion of the spindle.

The function generates two sets of measurements of the spindle. The first is a standard fixed radial measurement. The second will have exactly the same data from the target, but an equal and opposite set of data from the spindle. When the two sets of data are combined, the form error of the target is separated from the synchronous error motion of the spindle.

Target Reversal works only with Fixed Radial tests.