Seagate ST3450056SS (FDE), ST3146854LC manual Peak-to, Sinusoidal, Jitter, Frequency in kHz

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The leading and trailing edge slopes of figure 18 shall be preserved. As a result the amplitude value of Z1 is

	less than that given in table 30 and Z1TOL and Z1OP shall be defined from those slopes by the following equa-
	tion:	X2OP – ((0, 5)xadditional sinusoidal jitter) – X1OP
	Z1TOL	X2OP – ((0, 5)xadditional sinusoidal jitter) – X1OP
	Z1TOL	= Z1OPx-----------------------------------------------------------------------------------------------------------------------------------
		X2OP – X1OP

where:

Z1TOL is the value for Z1 to be used for the tolerance masks; and

Z1OP, X1OP, and X2OP are the values in table 30 for Z1, X1, and X2.

The X1 points in the receive tolerance masks are greater than the X1 points in the receive masks, due to the addition of sinusoidal jitter.

Figure 20 defines the sinusoidal jitter mask.

Peak-to-

	peak	Sinusoidal jitter frequency
	sinusoidal	Sinusoidal jitter frequency
	sinusoidal	(log/log plot)
	jitter	(log/log plot)
	jitter
	(in UI)	F		= 1.5 x 10 9 for 1.5 Gbps
		F	NOM	= 1.5 x 10 9 for 1.5 Gbps
		F	NOM	= 3.0 x 10 9 for 3.0 Gbps
	1.5	F	NOM	= 3.0 x 10 9 for 3.0 Gbps
	1.5		NOM
	1.0
	0.1
	0
		FNOM / 25,000		FNOM / 1,667

Frequency (in kHz)

Figure 20. Sinusoidal jitter mask

70	Cheetah 15K.6 SAS Product Manual, Rev. B

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Contents ST3146356SS ST3450856SSST3300656SS Page Contents Seagate Technology support services Defect and error managementInstallation Interface requirementsScope Model Number Full Disk Encryption FDECheetah 15K.6 SAS Product Manual, Rev. B Electromagnetic compatibility Standards, compliance and reference documentsStandards Electromagnetic susceptibilityCompliance European Union Restriction of Hazardous Substances RoHSReference documents Cheetah 15K.6 SAS Product Manual, Rev. B General description Performance Standard featuresMedia description Formatted capacities Factory-installed optionsReliability Programmable drive capacityCheetah 15K.6 SAS Product Manual, Rev. B Access time Performance characteristicsInternal drive characteristics Seek timeStart/stop time Format command execution time minutesGeneral performance characteristics 176 144 100Prefetch/multi-segmented cache control Cache operationCaching write data Prefetch operationRecoverable Errors Reliability specificationsError rates Unrecoverable ErrorsInterface errors Reliability and serviceSeek errors Preventive maintenancePerformance impact 4 S.M.A.R.TControlling S.M.A.R.T MillisecondsPredictive failures Reporting controlDetermining rate Thermal monitorDrive Self Test DST Temperature Log Page 0Dh Parameter Code DescriptionState of the drive prior to testing DST failure definitionShort test Function Code 001b Invoking DSTShort and extended tests Extended test Function Code 010bShipping Product warrantyAbort Product repair and return informationCheetah 15K.6 SAS Product Manual, Rev. B DC power requirements Physical/electrical specificationsAC power requirements ST3450856SS DC power requirementsST3450056SS FDE Gbit mode Amps ST3450056SS FDE DC power requirementsST3300656SS DC power requirements ST3300656SS Gbit mode AmpsST3300056SS FDE Gbit mode Amps ST3300056SS FDE DC power requirementsST3146356SS DC power requirements ST3146356SS Gbit mode AmpsST3146756SS FDE DC power requirements ST3146756SS FDE Gbit mode AmpsCurrent profiles Power sequencingConducted noise immunity Typical 450GB current profiles Typical 146GB current profiles Power dissipation ST3450856SS modelST3450056SS FDE model ST3300656SS model ST3300056SS FDE model ST3146356SS model ST3146756SS FDE model in 3 Gbit operation Temperature Environmental limitsShock and vibration Relative humidityEffective altitude sea level ShockPackage size Packaged/product weight Drop height Recommended mountingAcoustics Air cleanlinessVibration Corrosive environmentMechanical specifications Physical dimensions Cheetah 15K.6 SAS Product Manual, Rev. B Drive error recovery procedures Defect and error managementDrive internal defects/errors 51.87 Media Pre-Scan SAS system errorsBackground Media Scan Deferred Auto-Reallocation Idle Read After WriteCooling InstallationDrive orientation Air flow Drive mounting GroundingCheetah 15K.6 SAS Product Manual, Rev. B SAS features Interface requirementsDual port support Command name Command code Supported Scsi commands supportedCommands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Commands supported by Cheetah 15K.6 SAS family drives Inquiry data Bytes Data hexMode Sense data 2.1 ST3450856SS/ST3450056SS Mode Sense data Mode Pages2.2 ST3300656SS/ST3300056SS Mode Sense data 2.3 ST3146356SS/ST3146756SS Mode Sense data Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features SAS physical interfacePhysical interface Datum B Physical characteristics Connector requirementsPin descriptions Pin Signal name Signal typeElectrical description SAS pin descriptionsSAS transmitters and receivers Signal characteristicsPower Ready LED OutGeneral interface characteristics LED drive signalDifferential signals Eye masks Eye masks overviewAbsolute amplitude Receive eye maskJitter tolerance masks Normalized time in UIJitter Peak-toSinusoidal Frequency in kHzTransmitter signal characteristics Signal characteristica Units GbpsMaximum allowable jitter Receiver signal characteristicsSignal characteristic Units Gbps Compliant jitter test pattern Cjtpat Impedance specificationsReceiver jitter tolerance Impedance requirements Sheet 1Electrical TxRx connections Transmitter characteristicsImpedance requirements Sheet 2 = -5,437dB Shows the zero-length test load Receiver characteristics Cheetah 15K.6 SAS Product Manual, Rev. B Presales Support Seagate Technology support servicesInternet Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index NumericsIraw SAS See also cooling