(3)
Set the disk exerciser
as
follows.
• Set
data mode switch to
ON.
• Perform a one-track repetitive seek between tracks
000-001
.
6.9.6.2 Test Procedure
(1)
Observe the waveforms at TP20; refer
to
Figure 6-12.
(2)
If overshoot exceeds
.±,2v,
or excessive undershoot is evident, perform Overshoot
Adjustment detailed in Paragraph 6.9.7.
GROUND
-e*--+----70
.....
-----
GROUND-~-
GROUND-
IDEAL OVERSHOOT
OVERSHOOT EXCEEDING
2V LIMIT
EXCESSIVE
UNDERSHOOT
Figure 6-12. X + 0 Waveforms
000-001
Repetitive Track Seek (TP20)
6-34
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