A method for encoding a bit stream to meet a minimum bit transition requirement includes providing uncoded bits, determining whether the uncoded bits meet the minimum bit transition requirement, and replacing selected bits in the uncoded bits with replacement bits that meet the minimum bit transition requirement if the uncoded bits do not meet the minimum bit transition requirement, thereby encoding the uncoded bits into encoded bits that meet the minimum bit transition requirement.

 
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> Tool for certifying a head-gimbal assembly

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