| 摘要 |
PROBLEM TO BE SOLVED: To measure a duty ratio variation of a delay cell. SOLUTION: This method makes connection between an input and an output of the delay cell in a loop shape so as to cause a monopulse signal which has a shorter pulse width than a delay time of the delay cell to be input and circulated in the loop, and counts the number of the monopulse signals which circulate in the loop, and then a duty ratio variation of the delay cell is measured based on the counted value. COPYRIGHT: (C)2008,JPO&INPIT
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