Method and an apparatus for measuring the ratio of the amplification factor of a signal level normalizer

摘要

An apparatus and method of determining the ratio of an amplification factor before and after changing the amplification factor of a signal normalizer that amplifies the voltage amplitude of signals input from a signal generator so that it stays within a predetermined range, and an alternating-current voltage determination device, including, reversing the phase relationship so that said sine-wave signals are negated, the output voltage amplitude of the signal generator stays within a predetermined range and the step wherein the changing the amplification factor of the signal normalizer and the output voltage amplitude of the signal generator so that they are inversely proportional and a difference is obtained between the output voltage amplitude of the signal normalizer before and after the change.