Fujitsu MHN2150AT Manual/User Guide - Page 71
C141-E120-02EN, Erase, Servo A, Physical sector servo configuration on disk surface
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4.7 Servo Control Servo frame (120 servo frames per revolution) IGB Data area expand OGB CYLn + 1 CYLn CYLn - 1 (n: even number) W/R Recovery Servo Mark Gray Code W/R Recovery Servo Mark Gray Code W/R Recovery Servo Mark Gray Code Diameter direction Erase Servo B Servo A Erase Erase Servo B Servo A Erase Circumference Direction Servo C Erase Erase Servo D PAD Servo C Erase Erase: DC erase area Figure 4.8 Physical sector servo configuration on disk surface C141-E120-02EN 4-19
4.7
Servo Control
C141-E120-02EN
4-19
Figure 4.8
Physical sector servo configuration on disk surface
W/R Recovery
Servo Mark
Gray Code
W/R Recovery
Servo Mark
Gray Code
W/R Recovery
Servo Mark
Gray Code
Erase
Servo A
Erase
Servo A
Servo B
Erase
Servo B
Erase
Servo C
Erase
Servo C
Erase
Servo D
Erase
PAD
CYLn + 1
CYLn
CYLn – 1 (n:
even number)
Diameter
direction
Circumference
Direction
Erase:
DC erase
area
OGB
Data area
IGB
expand
Servo frame
(120 servo frames per revolution)