Seagate ST4000VM000 Acoustics, Test for Prominent Discrete Tones PDTs, Electromagnetic immunity

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Drive Specifications

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2.10 Acoustics

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.

 

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

Note

following equation:

 

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

 

 

Table 4 Fluid Dynamic Bearing (FDB) motor acoustics

Model

Idle*

Seek

 

 

 

ST2000VM003

2.1 bels (typ)

2.3 bels (typ)

2.3 bels (max)

2.4 bels (max)

 

 

 

 

ST1000VM002

1.9 bels (typ)

2.2 bels (typ)

2.1 bels (max)

2.3 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.

2.10.1 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 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.

2.11 Electromagnetic 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 5 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

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

 

EN61000-4-3: 96

80% AM with 1kHz sine

A

ENV 50204: 95

immunity

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

A

EN61000-4-6: 97

immunity

sine

 

 

 

 

 

 

 

 

0% open, 5 seconds

C

EN61000-4-11: 94

Voltage dips,

0% short, 5 seconds

C

 

interrupts

40%, 0.10 seconds

C

 

 

70%, 0.01 seconds

B

 

 

 

 

 

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Video 3.5 HDD Product Manual, Rev. H

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Contents Video 3.5 HDD Document Revision History Revision Date Description of changesContents Video 3.5 HDD Product Manual, Rev. H Figures Video 3.5 HDD Product Manual, Rev. H Seagate Technology Support Services Video 3.5 HDD Product Manual, Rev. H Introduction About the Serial ATA InterfaceIntroduction Specification summary tables Drive Specification ST2000VM003 ST1000VM002Drive Specifications LBA mode Default logical geometryFormatted capacity Recording and interface technologyPhysical characteristics Seek timeStart/stop times Typical seek times ms Read WritePower specifications Power consumptionTypical Current Profiles Power-management modes Power modes Heads Spindle BufferConducted noise Voltage toleranceEnvironmental specifications Drive case temperature Temperature gradientHumidity AltitudeShock VibrationAcoustics Test for Prominent Discrete Tones PDTsElectromagnetic immunity Model Idle Seek ST2000VM003Warranty Agency certification Safety certificationReliability Annualized Failure Rate Electromagnetic compatibilityFCC verification Environmental protectionChina Restriction of Hazardous Substances RoHS Directive Australian C-Tick N176Corrosive environment Drive Specifications Serial ATA cables and connectors Handling and static-discharge precautionsConfiguring the drive Drive mounting Attaching Sata cablingMounting dimensions 2TB model Mounting dimensions 1TB model Serial ATA Interface Segment Pin Function DefinitionE5H Supported ATA commandsCommand name Command code in hex E7H EAHECH E3HF3H F4HF5H F1HIdentify Device command Word Description ValueXxxxH BE01H FffehBit Word Set Features command Ultra DMA mode 6 is supportedA.R.T. commands Code in features register A.R.T. commandIndex EprmlVideo 3.5 HDD Product Manual, Rev. H Video 3.5 HDD Product Manual, Rev. H Video 3.5 HDD Product Manual, Rev. H Page Seagate Technology LLC Americas