Monitoring a fly height of a magnetic transducer

Details Monitoring a fly height of a magnetic transducer Monitoring a fly height of a magnetic transducer

2007-08-20

2010-10-05

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S075000

Reexamination Certificate

active

07808734

ABSTRACT:
A method for monitoring a fly height of a magnetic transducer comprises flying the magnetic transducer at a distance of separation from a recording media. The fly height is modulated with a predetermined modulation frequency with a fly height control device. A read-back signal is read from the recording media with the magnetic transducer. A change of the read back signal is measured that results from modulating the fly height. A fault signal is provided in response to the change crossing a threshold.

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