Patent ID: 8706445
Filing Date: 2014-04-22
Classification: H03M

Abstract:
1. A measurement apparatus that measures a characteristic of an AD converter, comprising: a signal supplying section that supplies the AD converter with an analog input signal having a prescribed waveform; an acquiring section that acquires a digital output signal output by the AD converter as a result of sampling the analog input signal; a measured histogram generating section that generates a measured histogram of the digital output signal, the measured histogram defining a plurality of frequencies of occurrence corresponding to digital values of the digital output signal; and a range calculating section that calculates at least one of an analog value corresponding to a lower limit and an analog value corresponding to an upper limit of a prescribed digital range, based on at least one of (i) a frequency of occurrence, from among the plurality of frequencies of occurrence, corresponding to digital values of the digital output signal that are less than or equal to the digital range and (ii) a frequency of occurrence, from among the plurality of frequencies of occurrence, corresponding to digital values of the digital output signal that are greater than or equal to the digital range.