Seagate ST31000533CS Acoustics, Electromagnetic immunity, Test for Prominent Discrete Tones PDTs

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2.9Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea- surements are consistent with ISO document 7779. Sound power measurements are taken under essentially free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.

Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined by the following equation:

(Number of seeks per second = 0.4 / (average latency + average access time)

Table 3:

Fluid Dynamic Bearing (FDB) motor acoustics

 

 

 

 

 

 

 

Idle*

CE Seek

 

 

 

 

1000 GB model

2.9 bels (typ)

3.1 bels (typ)

3.1 bels (max)

3.2 bels (max)

 

 

*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.

2.9.1Test for Prominent Discrete Tones (PDTs)

Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process is the use of the absolute threshold of hearing. Seagate uses this threshold curve (originated in ISO 389-7) to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards.

2.10Electromagnetic immunity

When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table:

Table 4:

Radio frequency environments

 

 

 

 

 

 

 

Test

 

Description

Performance level

Reference standard

 

 

 

 

 

Electrostatic

 

Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV

B

EN 61000-4-2: 95

discharge

 

 

 

 

Radiated RF

 

80 to 1,000 MHz, 3 V/m,

A

EN 61000-4-3: 96

immunity

 

80% AM with 1 kHz sine

 

ENV 50204: 95

 

 

900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz

 

 

Electrical fast

± 1 kV on AC mains, ± 0.5 kV on external I/O

B

EN 61000-4-4: 95

transient

 

 

 

 

Surge immunity

± 1 kV differential, ± 2 kV common, AC mains

B

EN 61000-4-5: 95

 

 

 

 

Conducted RF

150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine

A

EN 61000-4-6: 97

immunity

 

 

 

 

Voltage dips,

 

0% open, 5 seconds

C

EN 61000-4-11: 94

interrupts

 

0% short, 5 seconds

C

 

 

 

40%, 0.10 seconds

C

 

 

 

70%, 0.01 seconds

B

 

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Pipeline HD Pro Serial ATA Product Manual, Rev. C

Image 18
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 compatibilityKorean RRL Australian C-Tick N176FCC verification 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 DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordWord Set Features command Set Features command values3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Seagate Technology support services Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE Page Pipeline HD Pro Serial ATA Product Manual, Rev. C Page Disc Drive, Scotts Valley, California 95066-4544, USA