Seagate ST3300831ACE, ST3200826ACE Typical current profile, Conducted noise, Voltage tolerance

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2.7.1.1Typical current profile

Figure 1 Typical 5V startup and operation current profile

Figure 2 Typical 12V startup and operation current profile

2.7.2Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.

•Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected noise at up to 10 MHz.

•Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

2.7.3Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

12V ± 10%

8	DB35 Series Product Manual, Rev. B

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Contents DB35 Series Page DB35 Series Page Revision status summary sheet DB35 Series Product Manual, Rev. B Contents DB35 Series Product Manual, Rev. B List of Figures Viii DB35 Series Product Manual, Rev. B Introduction DB35 SeriesDB35 Series Product Manual, Rev. B Drive specifications Specification summary tableDrive specifications Altitude, nonoperating To 12,192 m Below mean sea level, max LBA mode Formatted capacityRecording and interface technology Start/stop times Physical characteristicsSeek time Typical seek timesPower specifications Typical current profile Conducted noiseVoltage tolerance Environmental specifications Humidity Relative humidity Temperature gradientWet bulb temperature AltitudeNonoperating vibration AcousticsElectromagnetic immunity Operating acousticsAgency certification Safety certificationReliability Electromagnetic compatibilityFCC verification Environmental protectionAustralian C-Tick N176 European Union Restriction of Hazardous Substances RoHSDB35 Series Product Manual, Rev. B Configuring and mounting the drive Handling and static discharge precautionsBreather filter hole precautions Breather filter hole locationDrive as master with a non-ATA-compatible slave Jumper settingsMaster/slave configuration Cable-select optionDrive mounting Ultra ATA/100 cableMounting dimensions-top, side and end view DB35 Series Product Manual, Rev. B ATA interface signals and connector pins ATA interfaceSupported ATA commands Command name Command code in hexF6H Identify Device command Word Description ValueXxxxH Description if bit is set to Bit Word Set Features command 4 S.M.A.R.T. commandsCode in features Register A.R.T. command Presales Support Seagate Technology support servicesInternet MySeagate Reseller.seagate.com Technical SupportWarranty Service Authorized Service CentersAmericas SEAGATE2 +1-405-324-47002 +1-405-324-3339 Call Center Toll-free Direct dialAmericas +1-405-324-47301 +1-405-324-4704 Call Center Toll-free Direct dial FAX / E-mailFAX Services-All Europe toll call Call Center Presales and Technical Support Warranty ServiceToll-Free Support Numbers Asia/Pacific Support Services DB35 Series Product Manual, Rev. B Index NumericsPage Page DB35 Series Product Manual, Rev. B Page Seagate Technology LLC