Seagate ST3300555SS, ST3146755SS, ST373355SS manual Peak-to, Sinusoidal, Jitter, Frequency in kHz

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The leading and trailing edge slopes of figure 20 shall be preserved. As a result the amplitude value of Z1 is

	less than that given in table 20 and Z1TOL and Z1OP shall be defined from those slopes by the following equa-
	tion:		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 20 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 22 defines the sinusoidal jitter mask.

Peak-to-

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

Frequency (in kHz)

Figure 22. Sinusoidal jitter mask

64	Cheetah T10 SAS Product Manual, Rev. A

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Contents Cheetah T10 SAS Page Contents Seagate Technology support services Defect and error managementInstallation Interface requirementsList of Figures Cheetah T10 SAS Product Manual, Rev. a Scope Cheetah T10 SAS disc driveCheetah T10 SAS Product Manual, Rev. a Electromagnetic compatibility Standards, compliance and reference documentsStandards Electromagnetic susceptibilityCompliance Reference documents Cheetah T10 SAS Product Manual, Rev. a General description Media description Standard featuresPerformance Formatted capacities Factory-installed accessoriesReliability Programmable drive capacityOptions factory installed User-installed accessoriesAccess time Performance characteristicsInternal drive characteristics Seek timeGeneral performance characteristics Format command execution time minutesStart/stop time Prefetch/multi-segmented cache control Cache operationCaching write data Prefetch operationRecoverable Errors Reliability specificationsError rates Unrecoverable ErrorsInterface errors Reliability and serviceSeek errors Preventive maintenanceControlling S.M.A.R.T Hot plugging the drive4 S.M.A.R.T Performance impactPredictive failures Reporting controlDetermining rate Thermal monitorReference Temperature Temperature Log Page 0DhPrimary Temperature Parameter Code DescriptionShort and extended tests State of the drive prior to testingInvoking DST Short test Function Code 001bShipping Product warrantyAbort Product repair and return informationCheetah T10 SAS Product Manual, Rev. a DC power requirements Physical/electrical specificationsAC power requirements ST3300555SS DC power requirementsST3146755SS Gbit mode Amps ST3146755SS DC power requirementsST373355SS DC power requirements ST373355SS Gbit mode AmpsConducted noise immunity General DC power requirement notesPower sequencing Current profilesTypical ST3300555SS drive current profiles Typical ST3146755SS drive current profiles Typical ST373355SS drive current profiles ST3300555SS in 3 Gbit operation Power dissipationST3300555SS in 1.5 Gbit operation ST3146755SS in 3 Gbit operation ST3146755SS in 1.5 Gbit operationST373355SS in 3 Gbit operation ST373355SS in 1.5 Gbit operationTemperature a. Operating Environmental limitsShock and vibration Relative humidityEffective altitude sea level a. Operating ShockPackage size Packaged/product weight Drop height Recommended mountingVibration a. Operating-normal Air cleanlinessCorrosive environment Mechanical specifications AcousticsDrive internal defects/errors Defect and error managementDrive error recovery procedures Write retry count LBA cumulative, msec Background Media Scan SAS system errorsMedia Pre-Scan Deferred Auto-Reallocation Idle Read After WriteInstallation Drive orientationCooling Air flowDrive mounting GroundingCheetah T10 SAS Product Manual, Rev. a SAS features Interface requirementsDual port support Commands supported by Cheetah T10 SAS family drives Scsi commands supportedCommand name Command code Supported Commands supported by Cheetah T10 SAS family drives Commands supported by Cheetah T10 SAS family drives Commands supported by Cheetah T10 SAS family drives Cheetah T10 SAS inquiry data Mode Sense dataInquiry data Bytes Data hexPage ST3300555SS Mode Sense data Mode PagesST3146755SS Mode Sense data ST373355SS Mode Sense data Supported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous statusSAS physical interface Datum B Physical characteristics Connector requirementsPin descriptions Pin Signal name Signal typeElectrical description SAS pin descriptions SAS transmitters and receivers Signal characteristics Power 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 Gbps m, n Deterministic jitterqCompliant jitter test pattern Cjtpat Impedance specificationsReceiver jitter tolerance Impedance requirements Sheet 1Impedance requirements Sheet 2 Transmitter characteristicsElectrical TxRx connections = -5,437dB Shows the zero-length test load Receiver characteristics Cheetah T10 SAS Product Manual, Rev. a Internet MySeagate Spp.seagate.com Seagate Technology support servicesWarranty Service Presales SupportData Recovery Services Authorized Service Centers Data Recovery ServicesCall center Presales and Technical Support Warranty Service FAX services-All Europe toll callToll-free support numbers Africa/Middle East support services Index NumericsPage SAS See also cooling Page Seagate Technology LLC