Seagate ST3400632NS, ST3250823NS, ST3250623NS, ST3400832NS manual Acoustics

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2.9.5.2Nonoperating shock

The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently put into operation is 300 Gs based on a nonrepetitive half-sine shock pulse of 2 msec duration.

2.9.6Vibration

All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws. Vibration may be applied in the X, Y or Z axis.

2.9.6.1Operating vibration

The maximum vibration levels that the drive may experience while meeting the performance standards speci- fied in this document are specified below.

5–22 Hz

Limited displacement

 

 

23–350 Hz

0.5 G acceleration

 

 

2.9.6.2Nonoperating vibration

The maximum nonoperating vibration levels that the drive may experience without incurring physical damage or degradation in performance when subsequently put into operation are specified below.

5–22 Hz

Limited displacement

 

 

23–350 Hz

5.0 Gs

 

 

2.10Acoustics

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*

2.8bels (typ)

3.4bels (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.

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NL35 Series SATA Product Manual, Rev. B

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Contents NL35 Series Serial ATA ST3400832NS ST3400632NS ST3250823NS ST3250623NSPage Contents NL35 Series Sata Product Manual, Rev. B List of Figures Page Introduction NL35 Series Serial ATAAbout the Serial ATA interface Drive specifications Specification summary tablesSustained transfer rate OD Mbytes/sec Nonoperating Formatted capacity Default logical geometryLBA mode Cylinders Read/write heads Sectors per track 16,383Seek time Physical characteristicsRecording and interface technology Typical seek times msec Read WritePower specifications Start/stop timesDC power requirements Typical current profilesIdle mode Power-management modesActive mode Sleep modeEnvironmental specifications Acoustics Radio frequency environments Electromagnetic immunityReliability Test Description Performance level Reference standardElectromagnetic compatibility Safety certificationAgency certification Korean RRLAustralian C-Tick N176 Environmental protectionCorrosive environment FCC verificationPage Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingNL35 Series Sata Product Manual, Rev. B 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 WordSet Features command Set Features command values3.1 S.M.A.R.T. Command Transport SCT 3 S.M.A.R.T. commandsA.R.T. commands Code in features register A.R.T. commandNL35 Series Sata Product Manual, Rev. B Presales Support Seagate Technology support servicesInternet Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE RPM Page Page Seagate Technology LLC
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