FIELD: computer engineering, in particular, measuring amplitude characteristics of harmonic signals of identical or similar frequency. SUBSTANCE: method involves measuring phase shift between signals, selection of time interval inside half-wave of divisor signal, measuring two instantaneous values of quotient signal f(t1) and f(t2) in moments t1 and t2 which are spaced from center of half wave by equal distance of quarter of half period. Then ratio of k values of amplitudes of quasi-sine signals is determined. EFFECT: increased precision. 2 dwg
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