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A tester for heads, discs, and read/write channels

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1 Author(s)
Dinsmore, S. ; Memorex Corporation, Santa Clara, CA

This paper describes a microcomputer-controlled precision tester designed to evaluate a number of factors crucial in the development of a high performance disc drive. The tester is intended for use in head development, head-to-disc interface characterization, and analog read/write channel development. Issues considered in the design of the tester are the precision of head positioning, the accuracy of spindle rotational speed, the ease of read/write channel substitution, and the degree of program control required to meet key test parameters. The basic tester may be modified to permit conversion of this device to such task-oriented devices as servowriters.

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Magnetics, IEEE Transactions on  (Volume:17 ,  Issue: 4 )