Seagate ST3400755SS manual Peak-to, Sinusoidal, Jitter, Frequency in kHz

Page 64

The leading and trailing edge slopes of figure 30 shall be preserved. As a result the amplitude value of Z1 is

	less than that given in table 15 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 15 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 32 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 32. Sinusoidal jitter mask

58	Cheetah NS SAS Product Manual, Rev. B

Image 64

Contents Cheetah NS SAS ST3400755SSPage Contents Defect and error management InstallationSeagate Technology support services Interface requirementsList of Figures Typical ST3400755SS drive +5V and +12V current profilesCheetah NS SAS Product Manual, Rev. B Scope Cheetah NS SAS Product Manual, Rev. B Standards, compliance and reference documents StandardsElectromagnetic compatibility Electromagnetic susceptibilityCompliance Reference documents Cheetah NS SAS Product Manual, Rev. B General description Standard features Media descriptionPerformance ReliabilityFactory-installed options Formatted capacitiesProgrammable drive capacity ST3400755SSCheetah NS SAS Product Manual, Rev. B Performance characteristics Internal drive characteristicsAccess time Seek performanceGeneral performance characteristics Format command execution time minutesStart/stop time Cache operation Prefetch/multi-segmented cache controlCaching write data Prefetch operation Reliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Seek errorsInterface errors Preventive maintenance4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Reporting controlPredictive failures Temperature Log Page 0DhThermal monitor State of the drive prior to testing DST failure definitionImplementation Invoking DSTProduct warranty Short test Function Code 001bExtended test Function Code 010b Log page entriesShipping Product repair and return informationCheetah NS SAS Product Manual, Rev. B Physical/electrical specifications AC power requirementsDC power requirements ST3400755SS DC power requirementsGeneral DC power requirement notes Power sequencingConducted noise immunity Current profilesPower dissipation Typical ST3400755SS drive +5V and +12V current profilesTemperature Environmental limitsRelative humidity Effective altitude sea levelShock and vibration ShockPackage size Packaged/product weight Drop height Recommended mountingAir cleanliness VibrationAcoustics Corrosive environmentX表示该部件（于同类物品程度上）所含的危险和有毒物质中国RoHS MCV标准所定义的门槛值。 China Restriction of Hazardous Substances RoHS DirectiveMechanical specifications Physical dimensionsCheetah NS SAS Product Manual, Rev. B Drive internal defects/errors Defect and error managementDrive error recovery procedures 77.87 Background Media Scan SAS system errorsMedia Pre-Scan Deferred Auto-Reallocation Idle Read After WriteInstallation Drive orientationCooling Air flowDrive mounting GroundingCheetah NS SAS Product Manual, Rev. B SAS features Interface requirementsDual port support Commands supported by Cheetah NS SAS family drives Scsi commands supportedCommand name Command code Supported Commands supported by Cheetah NS SAS family drives Commands supported by Cheetah NS SAS family drives Commands supported by Cheetah NS SAS family drives Inquiry data Mode Sense dataCheetah NS SAS inquiry data Bytes Data hex Page 2.1 ST3400755SS Mode Sense data Mode PagesMiscellaneous operating features and conditions Miscellaneous featuresSupported Feature or condition Miscellaneous statusSAS physical interface Datum B Physical characteristics Connector requirementsPin Signal name Signal type Electrical descriptionPin descriptions SAS pin descriptionsSignal characteristics PowerSAS transmitters and receivers Ready LED OutLED drive signal Differential signalsGeneral interface characteristics Eye masks Eye masks overviewReceive eye mask Jitter tolerance masksAbsolute amplitude Normalized time in UIPeak-to SinusoidalJitter Frequency in kHzTransmitter signal characteristics Signal characteristica Units GbpsReceiver signal characteristics Signal characteristic Units GbpsMaximum allowable jitter Gbps m, n Deterministic jitterqImpedance specifications Receiver jitter toleranceCompliant jitter test pattern Cjtpat Impedance requirements Sheet 1Impedance requirements Sheet 2 Transmitter characteristicsElectrical TxRx connections = -5,437dB Shows the zero-length test load Receiver characteristics Cheetah NS SAS Product Manual, Rev. B Seagate Technology support services InternetPresales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index NumericsPage SAS See also cooling