Seagate BARRACUDA 9 Installation Manual page 15

Barracuda 9 Installation Guide, Rev. A
DC power requirements
Voltage regulation
Maximum operating current
Maximum starting current
3, 6
Peak DC
3
Peak AC
Delayed motor start (max)
Peak operating current
Typical DC
Maximum DC
Maximum (peak)
Track following (DC)
1
at OD
1
at ID
Read track
1
OD DC
AC
Seeking
Typical DC
Maximum DC
Maximum (peak) AC
1
Measured with an average reading DC ammeter. Instanta-
neous +12V current peaks will exceed these values.
5
1, 4
1
1
1, 13
1
Single-ended
11
+5V +12V
± 5% ± 5%
1
1.02 0.83
0.98 2.2
– 3.1
1.04 0.05
0.97 0.8
1.02 0.83
1.09 1.8
0.94 0.74
0.92 0.76
1.05 0.79
1.14 1.0
0.97 0.92
1.00 1.04
1.03 1.8
Differential
11
+5V +12V
2
± 5% ± 5%
Amps
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
TBD TBD
13
2