Development of the analysis methodic of each information collection point complex oscillation for the field balancing is exhibited. All types of the rotor drives are observed, for each of them the consequence and conditions of the test runs are determined. Algorithm for extracting the informative harmonic (that is defined only by the unbalance of the rotor) has been made.

Keywords: Rotor, Field Balancing, Informative Harmonic, Testing, Calculation.