Seagate ST3000NC000, ST1000NC001, ST1000NC000, ST2000NC001 manual Conducted noise, Voltage tolerance

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2.8.2Conducted 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 10MHz.

•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 10MHz.

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

2.8.3Voltage tolerance

Voltage tolerance (including noise):

•5V ± 5%

•12V ± 10%

Constellation CS Serial ATA Product Manual, Rev. C

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Contents ConstellationCS Serial ATA Revision Date Description of Change Document Revision HistoryContents Sata Interface Figures Seagate Technology Support Services Introduction About the Sata interface Specification summary tables Drive SpecificationsFormatted capacity Model Formatted capacity Guaranteed sectors Bytes per sectorDefault logical geometry LBA modePhysical characteristics LBA modePower consumption Power specificationsSeek time Start/stop timesPeak operating current sequential write 3TB Drive DC power requirementsTypical current profiles 3TB model current profile 2TB model current profile 1TB model current profile Voltage tolerance Conducted noisePower modes Heads Spindle Buffer Power-management modesPowerChoice is invoked using one of two methods Extended Power Conditions PowerChoiceTMPower Condition Name Power Condition ID Description EPC Subcommands Descriptions Power Condition Name Manufacturer Default Timer ValuesPowerChoice Supported Extended Power Condition Indentifiers Power Condition Power Condition Name IdentifiersEnvironmental limits Ambient temperatureHumidity OperatingShock AltitudeVibration Non-operatingElectromagnetic immunity AcousticsTest for Prominent Discrete Tones PDTs Electromagnetic compatibility Agency certification Safety certificationAustralian C-Tick N176 FCC verificationKorean RRL Environmental protection Product warrantyChina Restriction of Hazardous Substances RoHS Directive Corrosive environmentProduct repair and return information ShippingStorage Sata cables and connectors Handling and static-discharge precautionsConfiguring the drive Drive mounting Mounting dimensionsATA Security Erase Unit Command on SED Sata drives Power requirementsSanitize Feature Set on SED Drives Data encryptionHot-Plug compatibility Sata InterfaceSata connector pin definitions Sata device plug connector pin definitionsCommand name Command code in hex Supported ATA commandsF1H Word Description Value Identify Device command69-74 Bit WordSmart error login is supported 0CH Set Features commandCode in features register A.R.T. command 3 S.M.A.R.T. commandsConstellation CS Serial ATA Product Manual, Rev. C IndexConstellation CS Serial ATA Product Manual, Rev. C Constellation CS Serial ATA Product Manual, Rev. C Americas Seagate Technology LLC