Magnetic read/write of reference track in contact start-stop tes

Details Magnetic read/write of reference track in contact start-stop tes Magnetic read/write of reference track in contact start-stop tes

1998-03-23

2000-12-05

Strecker, Gerard

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

369 53, G01R 3312, G01B 2736, G01B 5455

Patent

active

06157189&

ABSTRACT:
Methods and apparatus for testing a magnetic disk and a read head are provided. A reference track is written on the magnetic disk. The read head is scanned laterally with respect to the reference track while the magnetic disk is rotating. The reference track is sensed with the read head as the read head is scanned across the reference track to produce a scanned read signal that is representative of disk and read head performance. The scanned read signal may be processed to provide parameters such as track average amplitude, signal-to-noise ratio, and pulse width of write transitions.

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patent: 5838510 (1998-11-01), Inbar
Kanu G. Ashar. Magnetic Disk Drive Technology: Heads, Media, Channel, Interfaces, and Integration. IEEE Press, 1997, pp. 44-54.

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