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Method for characterizing a read head based on write induced magnetic read center shifts and read sensitivity changes in the read head
Method for characterizing a read head based on write induced magnetic read center shifts and read sensitivity changes in the read head
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机译:基于写入感应磁读取中心位移和读取头中读取灵敏度变化的表征读取头的方法
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摘要
The present invention relates to a method for characterizing a head in a hard drive assembly, in which the head has a write element. The method comprises providing a disk attached to a hard disk drive assembly, the disk having a plurality of tracks each having a track centerline. One of the tracks has a plurality of sectors. One of the sectors has a servo field with an A burst, a B burst and a C burst, where the A burst and the C bursts have a common boundary located at a track centerline and where the B burst has a center that is positioned along the track centerline. Each sector also has a data field. The read element is aligned with the B servo burst, and data is written in a data field of a first sector of one of the tracks. An A burst and a C burst located in a following sector of one of the tracks is read to provide an A burst amplitude value and a C burst amplitude value. A characteristic of the read element based on the A burst amplitude value and the C burst amplitude value is then determined.
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