4.7.3Servo frame format
As the servo information, the drive uses the
The servo frame consists of 6 blocks; write/read recovery, servo mark, preamble, gray code, Pos A to D and PAD. Figure 4.6 shows the servo frame format.
1.08 μs
0.24 |
| 2.12 | μs | ||
μs | |||||
|
|
| |||
|
|
|
|
| |
0.260.80
μs μs
0.92
μs
0.84
μs
0.84
μs
0.84
μs
0.78
μs
ASM
Preamble
SSM
SCD
POS
A
POS
B
POS
C
POS
D
PAD
W/R Recovery Field
8.76μs
Servo | DATA | DATA | Servo | DATA | |
Frame | Frame | ||||
|
|
| |||
| 115.7 μs |
|
|
|
Figure 4.6 Servo frame format
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