SUPERSONIC V(Z) CHARACTERISTIC MEASURING DEVICE

摘要

PURPOSE:To obtain a supersonic V(Z) characteristic measuring device for enabling V(Z) characteristics to be measured highly accurately. CONSTITUTION:By setting so that a position of a gate is followed according to an amount of travel of an acoustic probe in reference to a delay time of the gate which is set at an initial position, an interference wave portion can be extracted even if the gate width is set to a narrow value, thus enabling the interference wave to be taken out accurately and an accurate measurement peak value within that range. As a result, a period of a peak value of the interference wave can be measured accurately and more accurate V(Z) characteristics can be obtained.