G - Physics – 01 – R
Patent
G - Physics
01
R
324/3
G01R 35/00 (2006.01) G01R 29/027 (2006.01)
Patent
CA 1203283
Abstract: This invention relates to a method and apparatus for judging the calibration of a voltage attenuation probe. A square-wave signal is applied to the probe to be judged. A reference level is adjusted to be within a selected range of a peak level of the output signal of the probe. The reference level is compared with the output signal from the probe at a plurality of points along a portion of the output signal to provide a comparison result. A juding takes place as to whether or not a duty factor of the comparison result is equal to a known duty factor of the square-wave signal. The duty factor of the comparison result is computed according to the number of points at which the probe output signal is greater in magnitude than the reference level. The probe is judged to be calibrated when the duty factors of the comparison result and the square-wave signal are equal to one another.
415607
Fukuta Minoru
Manome Teruo
Miki Yasuhiko
Takita Kentaro
Kirby Eades Gale Baker
Sony/tektronix Corporation
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