| 摘要 |
A magnetic head testing apparatus includes reference information storing unit for holding a predetermined reference sampling period and a number of reference samplings, sampling unit for sampling reproduced data read a plurality of times from a magnetic medium in the reference sampling period, sampling number acquiring unit for acquiring a sampling number of measured data from a reproduced data base on a sampling result, sampling number ratio calculating unit for calculating a ratio of the sampling number of the measured data and the number of reference samplings, sampling data re-acquiring unit for changing the sampling period of the measured data depending on the calculated ratio and re-acquiring the sampling data and a measured data overlap-displaying unit for overlap-display of the sampling data re-acquired from the measured data a plurality of times.
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