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Equation 5-8
Segment
Equation 5-9
Revolution
Equation 5-10
Counts
NOTE
There is a gate timing restrictions that the user must compensate when the spindle speed
(RPM) is set up. When RPM is set below 2400[rpm], the system will automatically set the
spindle speed to 2400[rpm]. When RPM is set ≥ 2400 [rpm], the system will execute the
spindle speed specified by the user.
Table 5-1
Restrictions in Setting the Gate Time
RPM = spindle speed, when spindle speed ≥ 2400 rpm
RPM = 2400 rpm, when spindle speed < 2400
TrackTime = 60/RPM
SegmentTime = writeTime + delay + readTime
TrackTime - writeTime ≥ 100 µsec.
TrackTime - SegmentTime ≥ 30 µsec. (For TAA, PW)
TrackTime - SegmentTime ≥ 100 µsec. (For Narrow Band TAA)
Chapter 5
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----------------------------------------- -
Segment
=
×
RPM SegTime
Counts
--------------------- -
Rev
=
Segment
×
Counts
=
Rev Segment
Measurement Definition
Measurement Parameter Definition
251
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