ashinmetori measurement equipment and measuring method

摘要

PROBLEM TO BE SOLVED: To provide an asymmetry measuring device in which a long time is not required for measuring, a measuring error is less, which is suitable for mass production, also, in which a quantization error at the time of counting a reference clock in measuring hours is not caused. ;SOLUTION: An asymmetry measuring device 4 is provided with a frequency dividing means 5 frequency-dividing read-data outputted from a read-data generating section 2 of a data storing means 1, a DC level converting circuit 6 converting a duty ratio of a signal frequency-divided by the frequency dividing means 5 to a DC voltage level, and a DC voltage measuring means 7 measuring output voltage of this DC level converting circuit 6. This asymmetry measuring device 4 can replace time measurement by measurement of DC voltage, a quantization error generated when the reference clock is used in time measurement never be caused.;COPYRIGHT: (C)1999,JPO