Using the mathematical modeling for estimation the error of measurement the harmonic signals informative parameters

The method of measurement the parameters on instant values of entrance and additional harmonic signals is investigated. The method provides determination of characteristics on the instant values of signals measured at the same time once for the period at the time of transition of one of additional tension through zero. Results of estimation the error of method realization because of not ideality the phase-shifting blocks forming additional signals are given. The received results allow to determine an optimum angle of phase blocks shift depending on requirements for measurement accuracy.