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2.8 Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. (Refer to
2.8.1
Power consumption
Power requirements for the drives are listed in
of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.
• Read/write power and current
Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-ms delay, then a
16-sector read followed by a 32-ms delay.
• Operating power and current (CE profile)
Operating power is measured by simulating a typical PVR operating environment, using a 50% write, 50% read algo-
rithm.
• Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random
track location.
• Standby mode
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/write elec-
tronics are in power-down mode.
Table 2 DC power requirements for 1TB and 500GB models
Power dissipation (1-disk values shown)
Spinup
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. Measurement was taken in Idle 1 mode.
†5W IDLE, Standby and Sleep, with DIPLM enabled
Seagate Video 3.5 HDD Product Manual, Rev. B
. Typical power measurements are based on an average
Table 2 on page 11
Avg (watts 25°C)
—
2.502
3.676
0.819
0.819
Figure 3
).
Avg 5V typ amps
Avg 12V typ amps
—
0.152
0.385
0.15
0.15
1.6
0.145
0.145
0.005
0.005
11
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