Seagate ST38421A, ST32112A, ST36421A Operating vibration, Nonoperating vibration, Drive acoustics

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

U4 Family Product Manual, Rev. D

13

1.8.6.1 Operating vibration

The following table lists the maximum vibration levels that the drive may expe- rience while meeting the performance standards specified in this document.

5–21 Hz

0.02-inch displacement (peak to peak)

22–350 Hz

0.5 Gs acceleration (zero to peak)

351–500 Hz

0.3 Gs acceleration (zero to peak)

1.8.6.2 Nonoperating vibration

The following table lists the maximum nonoperating vibration that the drive may experience without incurring physical damage or degradation in performance when subsequently put into operation.

5–21Hz

0.02-inch displacement (peak to peak)

22–350 Hz

5.0 Gs acceleration (zero to peak)

351–500 Hz

2.0 Gs acceleration (zero to peak)

1.9 Drive acoustics

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

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

access time)

Acoustic mode

Idle mode

Seek mode

Sound power (bels)

3.3 (typ) 3.7 (max)

3.9 (typ) 4.3 (max)

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Contents Product Manual Page Product Manual Page Contents ATA interface Configuring and mounting the driveSeagate Connfidential Review Draft not for Distribution FiguresSeagate Confidential Review Draft not for Distribution Introduction Specification summary table Track-to-track seek time Msec typical Vibration, nonoperating LBA Mode Default logical geometryFormatted capacity Physical organizationDrive Specification ST38421A, ST36421A ST34311A, ST32112A Physical characteristicsRecording and interface technology Seek timePower consumption Power specificationsSpinup power Start/stop timesRead/Write power and current Seek ModeOperating power and current Idle mode powerPower Mode Typical Watts Typical Amps RMS 12V Typical current profileCurrent amps Time seconds Power-management modes Conducted noiseVoltage tolerance Temperature gradient Environmental tolerances Ambient temperatureHumidity Relative HumidityAltitude Wet bulb temperatureShock Operating shockOperating vibration Nonoperating vibrationDrive acoustics Electromagnetic susceptibility Agency certification Safety certificationReliability Electromagnetic compatibilityAustralian C-Tick FCC verificationU4 Family Product Manual, Rev. D Handling and static-discharge precautions Configuring and mounting the driveMaster/slave jumper settings Jumper settings Master/slave configurationCable-select option Important mounting precautionsUltra ATA/66 cable Drive mountingMounting dimensions-top, side and end view ATA interface ATA interface signals and connector pinsO pins and supported ATA signals Command name Command code in hex ATA-standard commands ATA Interface commands Supported ATA commandsCommand name Identify Drive commandATA-standard power-management commands ATA-standard security commandsWord Description 27-46 Drive model number 40 Ascii char Multiword DMA active and modes Description if bit is set to Bit Word 0CH Set Features commandCode in Features Register A.R.T. Command 4 S.M.A.R.T. commandsPage U4 Family Product Manual, Rev. D U4 Family Product Manual, Rev. D
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