Seagate ST32000641AS Acoustics, Electromagnetic immunity, Test for Prominent Discrete Tones PDTs

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2.8Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements 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:

Drive A-weighted Sound Power Levels (SWL, BA)

 

 

 

 

 

 

Idle[1]

Performance Seek

2000GB model

2.7 bels (typ)

2.9 bels (typ)

2.9 bels (max)

3.3 bels (max)

 

 

[1]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.

2.8.1Test 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 audi- bility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards.

2.9Electromagnetic 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

EN61000-4-2: 95

discharge

 

 

 

 

Radiated RF

 

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

A

EN61000-4-3: 96

immunity

 

80% AM with 1kHz sine

 

ENV 50204: 95

 

 

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

 

 

Electrical fast

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

B

EN61000-4-4: 95

transient

 

 

 

 

Surge immunity

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

B

EN61000-4-5: 95

 

 

 

 

Conducted RF

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

A

EN61000-4-6: 97

immunity

 

 

 

 

Voltage dips,

 

0% open, 5 seconds

C

EN61000-4-11: 94

interrupts

 

0% short, 5 seconds

C

 

 

 

40%, 0.10 seconds

C

 

 

 

70%, 0.01 seconds

B

 

12

Barracuda XT Series SATA Product Manual, Rev. C

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Contents
Barracuda XT Series Sata ST32000641ASRevision history Revision Date Sheets affected or commentsContents Barracuda XT Series Sata Product Manual, Rev. C List of Figures Barracuda XT Series Sata Product Manual, Rev. C Introduction About the Serial ATA interface Drive specifications Drive specifications summary for 2000GB modelsRanty information for your drive Formatted capacity Default logical geometryLBA mode Recording and interface technologyPhysical characteristics Start/stop times2000GB model Power specifications Typical current profiles Idle mode Power management modesActive mode Sleep modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationElectromagnetic immunity Drive A-weighted Sound Power Levels SWL, BAAcoustics Test for Prominent Discrete Tones PDTsAgency certification WarrantySafety certification Electromagnetic Compatibility EMCKorean RRL Australian C-Tick N176FCC verification Environmental protection Corrosive environmentConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions 2000GB model Drive mountingSerial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Segment Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F3H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordBarracuda XT Series Sata Product Manual, Rev. C 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 RRL Page Barracuda XT Series Sata Product Manual, Rev. C Page Seagate Technology LLC
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