| 摘要 |
PURPOSE:To evaluate and measure a magnetic head in a short time, by providing a magnetic head for measurement having tracks of the same number as the kind of magnetic tapes for measurement having different characteristics from each other. CONSTITUTION:The magnetic tape 18 for measurement of the magnetic characteristic measuring instrument of this invention uses three kinds of recording media C-E and the magnetic head for measurement 19 is three track type having tracks F, G, and H. When a sound recording head 1 to be measured is tested, simultaneous measurement is performed by passing each track of the magnetic head 19 for measurement through a reproducing system circuit. When an erase head 11 to be measured using a permanent magnet is tested, the magnetic head 19 for measurement is used as a sound recording head and reproducing head for measurement. Therefore, the time required for estimating and measuring a magnetic head can be reduced remarkably.
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