Magnetic characterization using elements of a PRML channel

Magnetic characterization using elements of a PRML channel

The authors examine several magnetic characterization techniques which are easily implemented using elements of a partial-response maximum-likelihood (PRML) channel. These techniques are applicable over a broad range of topics. The use of the PRML digital samples with specialized data patterns to de...

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Veröffentlicht in:IEEE transactions on magnetics 1991-11, Vol.27 (6), p.4544-4548
Hauptverfasser: Coker, J.D., Galbraith, R.L., Kerwin, G.J.
Format: Artikel
Sprache:eng
Schlagworte:
Electronic equipment testing
Error analysis
Estimation error
Hardware
Logic testing
Maximum likelihood detection
Maximum likelihood estimation
Performance analysis
Sampling methods
Viterbi algorithm
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Zusammenfassung:The authors examine several magnetic characterization techniques which are easily implemented using elements of a partial-response maximum-likelihood (PRML) channel. These techniques are applicable over a broad range of topics. The use of the PRML digital samples with specialized data patterns to detect defective media sites is discussed. A sensitive and calibrated method for measuring fly height variations is outlined. A statistical measurement scheme that provides a figure of merit for magnetic performance is discussed.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.278678