A gauge test for measuring transition jitter with acceptable accuracy is discussed and presented. The dependence of the transition jitter measurement on head design for a given longitudinal thin film magnetic recording medium is also presented. It is shown that the head type is an important parameter of the measurement of transition jitter in a write process, and the effect due to different head types must be taken into account.
Method of measuring side erase band width with a spinstand has been 'improved using narrow-band overwrite filter read-back track profile, which provides a sharp vertex and two straight side lines. The resultant measurements are in good agreement with those obtained from '747' tests. Effects of the increase of the side erase band width caused from high frequency magnetic recording has been investigated. The impact on the off-track capability due to increase of side erase band width of high frequency magnetic recording is discussed.
425 1 side fringing erased bands of thin film heads are necessary in the determination of the recording track density. These parameters are usually defined and determined by a '747' curve measurement [ 1 J -[2]. The read width, however, can not be directly measured in this procedure. Instead, the read width is often estimated as equal to the physical track width, or as some arbitrary level of a track profile curve [3], or as in the case of [2], the modeling results of a modeled '747' curve. 4 3 5 3
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