The pulse width adjustment circuit, a pulse width adjusting method, and a semiconductor testing device

A pulse width adjusting circuit for outputting an output signal having an adjusted pulse width of a given pulse signals, a first delay circuit for outputting a first delay signal obtained by delaying the pulse signal, the delay amount different from the first delay circuit in a second delay circuit for outputting a second delay signal obtained by delaying the pulse signal, an output signal having a pulse width corresponding to the difference of the delay amount in the delay amount and the second delay circuit in the first delay circuit, first providing a pulse width adjustment circuit and an output unit for outputting based on the delay signal and the second delayed signal.