Seagate Understanding Typical Current Profiles in Momentus Drives

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3.9.1.1Typical current profile

Figure 1. Typical +5V only startup and operation current profile

3.9.2Deferred spinup

Momentus drives do not support the deferred spinup option. If you require this option, refer to the Momentus 5400.3 SATA Blade Server family of drives.

3.9.3Conducted noise

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

Using 5V 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.

3.9.4Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

Momentus Product Manual, Rev. D

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Contents Momentus Revision Date Revision historyContents Momentus Product Manual, Rev. D List of Figures Page Seagate Online Support and Services Seagate Technology support servicesByte/sector models Introduction4K byte/sector models About the Serial ATA interface Drive specifications for 640, 500 and 400GB models Drive specificationsSpecification summary table To 12,192 m -1000 ft to 40,000 ft Drive specifications for 320, 250 and 160GB models Drive specifications for 320, 250 and 160GB models LBA mode Default logical geometryFormatted capacity Physical organizationRecording and interface technology Physical characteristicsSeek time Typical seek timesStart/stop times Power specificationsDeferred spinup Typical current profileConducted noise Voltage tolerancePower management modes Power-management modesActive mode Idle modeEnvironmental specifications Operating shock ShockNonoperating shock VibrationAcoustics Drive A-weighted Sound Power Levels SWL, BAElectromagnetic immunity Test for Prominent Discrete Tones PDTsMeasurement type Specification Safety certificationReliability Agency certificationFCC verification Korean RRLAustralian C-Tick N176 Corrosive environment Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS China Restriction of Hazardous Substances RoHS DirectiveHandling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveTop cover stiffness/deflection Drive mountingMeasurements shown in are in inches Signal Serial ATA connector pin definitionsSerial ATA Sata interface Segment Pin Function DefinitionP10 Ground 2nd mate P11 Reserved Pin Function DefinitionCommand name Command code in hex ATA-standard commands Supported ATA commandsATA-standard security commands Command name Command code in hexWord Description Value Identify Device commandXx07H Description if bit is set to Bit Set Features command values Set Features commandCode in features register A.R.T. command 3 S.M.A.R.T. commandsM.A.R.T. commands Momentus Product Manual, Rev. D Index Page Page Momentus Product Manual, Rev. D Page Seagate Technology LLC