Seagate ST31000533CS manual Power specifications

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2.7Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 2 on page 18.

2.7.1Power consumption

Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on an average 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.

• Operating (CE seek profile)

Operating power is measured by simulating a typical PVR operating environment, using a 50% write 50% read algorithm.

• 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 electronics are in power-down mode.

Table 2:

DC power requirements

 

 

 

 

 

 

 

Power dissipation (3-disc values shown)

Avg (watts 25° C)

Avg 5V typ amps

Avg 12V typ amps

 

 

 

 

 

Spinup

 

—

—

2.0 (peak)

 

 

 

 

 

Idle*

 

6.938

0.298

0.454

 

 

 

 

 

Operating

 

8.766

0.414

0.598

 

 

 

 

 

Standby

 

0.99

0.150

0.020

 

 

 

 

 

Sleep

 

0.99

0.150

0.020

 

 

 

 

 

*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.

2.7.2Conducted 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 10 MHz.

•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 10 MHz.

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

2.7.3Voltage tolerance

Voltage tolerance (including noise):

5V +10% / -7.5%

12V +10% / -7.5%

8

Pipeline HD Pro Serial ATA Product Manual, Rev. C

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Contents Pipeline HD Pro Serial ATA ST31000533CSRevision history Revision Date Sheets affected or commentsContents Pipeline HD Pro Serial ATA Product Manual, Rev. C List of Figures Page Introduction About the Serial ATA interface Drive specifications Drive specifications summary for 1000 Gbyte models Will display the warranty information for your drive Formatted capacity Default logical geometryLBA mode Recording and interface technologyStart/stop times Physical characteristicsSeek time Typical seek times msec Read WritePower specifications Idle mode Power-management modesActive mode Sleep modeEnvironmental specifications Operating vibration Nonoperating shock GB modelsVibration Nonoperating vibrationFluid Dynamic Bearing FDB motor acoustics AcousticsElectromagnetic immunity Test for Prominent Discrete Tones PDTsAgency certification Safety certificationReliability Electromagnetic compatibilityFCC verification Korean RRLAustralian C-Tick N176 Environmental protection Corrosive environmentPipeline HD Pro Serial ATA Product Manual, Rev. C Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions 1000 GB models Drive mountingPipeline HD Pro Serial ATA Product Manual, Rev. C Serial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionCommand name Command code in hex Supported ATA commandsSupported ATA commands F4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordWord Set Features command Set Features command valuesCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Technical Support Seagate Technology support servicesPresales Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE Page Pipeline HD Pro Serial ATA Product Manual, Rev. C Page Disc Drive, Scotts Valley, California 95066-4544, USA
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