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Table 3-2 G9QST Servo Signals (cont'd)
FUNCTIOi-I\...~'
j'
TEST POINT
Current waveform
TP15
S peed profile
follows
Position
transient
response
The trigger
is TPI-4
and TPI-3
of G9QST.
TPIO, TPll
The trigger
is TPI-4
and TPI-3
of G9QST.
TP7
The trigger
is TPI-5
of G9QST.
3-17
COMMENTS
000
~
691 Cylinder Repeat Seek
VI
+
1.0 - 1.3 V V2 < 1.3 V
(The polarity changes according to
the seek direction.)
000
~
691 Cylinder Repeat Seek
The speed set signal (TPIO) is
inverted and made to overlap
the speed signal (TPII).
av
Optional seek
Va
va
~,
6,
t
/
f
c::>
If there is
an overshoot
VO<I
VO-p
I
';/7-c-~
V
3
ms
The amplitude 3ms
I
after the position
mode is set shall
be less then 0.5VOP·
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