FIELD: measurement technology. SUBSTANCE: phase shift F0 between two signals x(t) and y(t) filtered off d.c. component is determined by means of two instant values of one of signals assumed as measuring signal at time moments t01 and t1; first signal is selected when reference signal y(t) equals zero and second one, at half-wave center of signal y(t); then phase shift F0 between signals is found from equation given in description of invention. EFFECT: reduced phase-shift measurement error at phase shifts approaching 0 or 180 deg even at infralow frequencies; permitted d c component in one of signals when measuring phase shift of value approaching 45 or 135 deg. 2 dwg
Authors
Dates
1995-07-09—Published
1993-06-28—Filed