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 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.<
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