Seagate ST9500323CS, ST9320328CS Electromagnetic immunity, Test for Prominent Discrete Tones PDTs

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Table 5:

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

 

 

 

 

 

 

2.1 bels (typ)

 

2.3 bels (typ)

2.0 bels (typ)

2.1 bels (typ)

2.2 bels (max)

2.4 bels (max)

2.1 bels (max)

2.2 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.

Test 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 the lower limit for the threshold curve* 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.

*Defined as the median curve given by ISO 389-7 (Tf curve) minus 10dB at all frequencies.

2.12Electromagnetic immunity

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

Table 6:

Radio frequency environments

 

 

 

 

 

 

 

 

 

 

Performance

Reference

Test

 

Description

level

standard

 

 

 

 

Electrostatic discharge

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

B

EN 61000-4-2: 95

 

 

 

 

Radiated RF immunity

80 to 2,000 MHz, 10 V/m,

A

EN 61000-4-3: 96

 

 

80% AM with 1 kHz sine

 

ENV 50204: 95

 

 

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

 

 

 

 

 

 

Electrical fast transient

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

B

EN 61000-4-4: 95

 

 

 

 

Surge immunity

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

B

EN 61000-4-5: 95

 

 

 

 

Conducted RF immunity

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

A

EN 61000-4-6: 97

 

 

sine

 

 

 

 

 

 

Power Frequency H-field

1 A/m, 50Hz/60Hz, 3 axes

A

EN 61000-4-8: 97

immunity

 

 

 

 

 

 

 

 

Voltage dips, interrupts

30% Reduction for 25 cycles

C

EN 61000-4-11: 94

 

 

>95% Reduction for 250 cycles

C

 

 

 

>95%, 0.5 cycles

B

 

 

 

 

 

 

12

Pipeline HD Mini Series SATA Product Manual, Rev. E

Image 22
Contents Pipeline HD Mini Series Sata ST9500323CSST9250311CS ST9320328CSST91603110CSRevision history Revision Date Sheets affected or commentsPipeline HD Mini Series Sata Product Manual, Rev. E Pipeline HD Mini Series Sata Product Manual, Rev. E Contents Pipeline HD Mini Series Sata Product Manual, Rev. E List of Figures Page Seagate Technology Support Services Viii Introduction About the Serial ATA interfacePage Drive specifications Specification summary tableSleep mode Formatted capacity Default logical geometryLBA mode Cylinders Read/write heads Sectors per track 16,383Recording and interface technology Physical characteristicsPhysical organization Seek timePower specifications Start/stop timesDC power Typical current profileActive mode Power-management modesPower management modes Idle modeEnvironmental specifications Acoustics Radio frequency environments Electromagnetic immunityTest for Prominent Discrete Tones PDTs Performance Reference Test Description Level StandardAgency certification Safety certificationReliability Annualized Failure Rate AFRAustralian C-Tick N176 Environmental protectionKorean RRL FCC verificationEuropean Union Restriction of Hazardous Substances RoHS Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive Pipeline HD Mini Series Sata Product Manual, Rev. E Configuring the drive Configuring and mounting the driveHandling and static-discharge precautions Serial ATA cables and connectorsDrive mounting Top cover stiffness/deflectionMeasurements shown in are in inches Pipeline HD Mini Series Sata Product Manual, Rev. E Serial ATA Sata interface Serial ATA connector pin definitionsSignal Segment Pin Function DefinitionPower Supported ATA commandsCommand name Command code in hex ATA-standard commands Command name Command code in hex ATA-standard power-management commands ATA-standard security commandsIdentify Device command Word Description ValueXxxxH Description if bit is set to Bit Word Bit WordSet Features command Set Features command valuesA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Pipeline HD Mini Series Sata Product Manual, Rev. E Index ITE TPI Pipeline HD Mini Series Sata Product Manual, Rev. E Page Seagate Technology LLC