Conducted Noise - Seagate ST3000DM008 Product Manual

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Table 2 DC power requirements (3-disk: 3TB and 2TB models)
Power dissipation (3-disk values shown)
Spinup
Idle2* †
Operating
Standby
Sleep
Table 3 DC power requirements (1-disk: 1TB and 500GB models)
Power dissipation (1-disk values shown)
Spinup
Perf Idle* †
Operating
Standby
Sleep
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to
operational levels.
†5W IDLE with DIPLM Enabled

2.8.2 Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt
line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected
noise at up to 10MHz.
• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected
noise at up to 10MHz.
Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.
Note
Seagate BarraCuda Product Manual, Rev. D
Avg (watts 25° C) Avg 5V typ amps
— —
5.40 0.190
8.00 0.510
0.75 0.136
0.75 0.136
Avg (watts 25° C) Avg 5V typ amps
— —
4.6 0.378
5.3 0.656
0.94 0.350
0.94 0.350
Drive Specifications
Avg 12V amps
2.0A or 2.5A
0.377
0.462
0.005
0.005
Avg 12V typ amps
2.0
0.224
0.243
0.010
0.010
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