Seagate Elite 9, Руководство по эксплуатации продукта

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28 Elite 9 Product Manual, Rev. C
7.2.3
+++++
12V current profile
Figure 8 identifies the drive’s
+
12V current profile. The current during the
various times is as shown.
+12V Current (amps)
Time (seconds)
0 5 10 15 20 25 30
t2
t0 t1 t3 t4
t5
t6
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
4.8
4.4
3.4
Peak AC
Minimum AC
Nominal Curve (average)
Figure 8. Elite 9 drive typical
+++++
12V current profile
T0 Power is applied to the drive.
T1 Controller self-tests are performed.
T2 The spindle begins to accelerate under current limiting after performing
internal diagnostics.
T3 The spindle is up to speed and the head-arm restraint is unlocked.
T4 Heads move from the landing zone to the data area.
T5 The adaptive calibration sequence is performed.
T6 Calibration is complete and the drive is ready for reading and writing.
Note. All times and currents are typical. See Table 1 for maximum current
requirements.
7.3 Heat/power dissipation
The heat and DC power dissipation values for your drive are listed below.
ST410800N/W ST410800ND ST410800WD
Typical seek and read 25W 26W 26W
avg at nominal voltages (85 BTUs/hr) (89 BTUs/hr) (89 BTUs/hr)
Typical under idle 22W 22W 23W
conditions (75 BTUs/hr) (75 BTUs/hr) (78 BTUs/hr)