Seagate ST9500620NS, ST9500622NS, ST9500621NS, ST9250610NS manual Conducted noise, Voltage tolerance

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Figure 3. Typical 5V/12V startup and operation current profile for 250GB models

3.8.2Conducted noise

Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.

•	+5v	= 250 mV pp from 100 Hz to 20 MHz.
•	+12v	=	450 mV pp from 8 kHz to 20 kHz.
		=	250 mV pp from 20 kHz to 5 MHz.

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

3.8.3Voltage tolerance

Voltage tolerance (including noise):

5V +10 / -7.5%

12V +10 / -7.5%

14	Constellation.2 Serial ATA Product Manual, Rev. B

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Contents SED Fips 140-2 Models ST91000642NS ST9500622NS ST9250612NSStandard Models Self-Encrypting Drive Models Revision history Revision Date Sheets affected or commentsContents Serial ATA Sata interface List of Figures Page Seagate Technology support services Seagate Online Support and ServicesIntroduction About the Serial ATA interface Drive specifications Specification summary tablesDrive specifications summary for 1TB, 500 and 250 GB models Constellation.2 Serial ATA Product Manual, Rev. B Default logical geometry LBA modeFormatted capacity Recording and interface technologyPhysical characteristics Seek timeStart/stop times Typical seek times ms Read WritePower specifications Power consumptionSpinup power Standby mode1000GB drive Standard & SED model DC power requirementss PowerST91000640NS Parameter 0GB Voltage +12 Regulation +10/-7.5% Watts500GB drive Standard & SED model DC power requirements ST9500620NS Parameter 0GB Voltage +12250GB drive Standard & SED model DC power requirements ST9250610NS Parameter 0GB Voltage +12Typical current profiles Conducted noise Voltage tolerancePower-management modes Active modeIdle mode Sleep modePowerChoice is invoked using one of two methods Power Condition Name Power Condition ID DescriptionRelative humidity Temperature a. OperatingEnvironmental limits Effective altitude sea level ShockOperating shock Nonoperating shockAcoustics VibrationOperating vibration Nonoperating vibrationElectromagnetic immunity ReliabilityRadio frequency environments Test Description Performance level Reference standardAgency certification Reference documents Product warrantyEnvironmental protection Product repair and return information ShippingStorage Corrosive environment China Restriction of Hazardous Substances RoHS DirectiveConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingCooling Air flowLevel 2 security About FipsPurpose Controlled access Admin SPAbout self-encrypting drives Data encryptionDefault password Random number generator RNGDrive locking Data bandsAuthenticated firmware download Power requirementsSupported commands Cryptographic eraseSerial ATA Sata interface Hot-Plug compatibilitySerial ATA device plug connector pin definitions Serial ATA connector pin definitionsSignal Pin Function DefinitionCommand name Command code in hex Supported ATA commandsSupported ATA commands F4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordWord Set Features command Set Features command valuesCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Index ITE Page Constellation.2 Serial ATA Product Manual, Rev. B Page Disc Drive, Scotts Valley, California 95066-4544, USA