Seagate ST973402SS manual Transmitter signal characteristics, Signal characteristica Units Gbps

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9.5.2.2Transmitter signal characteristics

Table 27 specifies the signal requirements at the transmitter end of a TxRx connection as measured into the zero-length test load. All specifications are based on differential measurements.

The OOB sequence is performed at signal voltage levels corresponding to the lowest supported transfer rate. Table 27 specifies the signal characteristics.

Table 27: Transmitter signal characteristics

Signal characteristica

Units

1.5 Gbps

3.0 Gbps

Skewb

ps

20

15

Tx Off Voltagec

mV(P-P)

< 50

< 50

Maximum rise/fall timed

ps

273

137

Minimum rise/fall timed

ps

67

67

Maximum transmitter output imbalancee

%

10

10

OOB offset deltaf

mV

± 25

± 25

OOB common mode deltag

mV

± 50

± 50

aAll tests in this table shall be performed with zero-length test load shown in figure 19.

bThe skew measurement shall be made at the midpoint of the transition with a repeating 0101b pattern on the physical link. The same stable trigger, coherent to the data stream, shall be used for both the Tx+ and Tx- signals. Skew is defined as the time difference between the means of the midpoint crossing times of the Tx+ signal and the Tx- signal.

cThe transmitter off voltage is the maximum A.C. voltage measured at compliance points when the transmitter is unpowered or transmitting D.C. idle (e.g., during idle time of an OOB signal).

dRise/fall times are measured from 20 % to 80 % of the transition with a repeating 0101b pattern on the physical link.

eThe maximum difference between the V+ and V- A.C. RMS transmitter amplitudes measured on a CJTPAT test pattern (see 9.5.2.3.3) into the test load shown in figure 19, as a percentage of the average of the V+ and V- A.C. RMS amplitudes.

fThe maximum difference in the average differential voltage (D.C. offset) component between the burst times and the idle times of an OOB signal.

gThe maximum difference in the average of the common mode voltage between the burst times and the idle times of an OOB signal.

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Savvio 10K.2 SAS Product Manual, Rev. B

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Contents Savvio 10K.2 SAS Page Savvio 10K.2 SAS Page Revision status summary sheet Revision DatePage Contents Seagate Technology support services Defect and error managementInstallation Interface requirementsList of Figures Savvio 10K.2 SAS disc drivePage Scope Savvio 10K.2 SAS disc driveSavvio 10K.2 SAS Product Manual, Rev. B Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibilityAustralian C-Tick Electromagnetic complianceElectromagnetic compliance for the European Union Korean MICReference documents European Union Restriction of Hazardous Substances RoHSSavvio 10K.2 SAS Product Manual, Rev. B General description Performance Standard featuresMedia description Formatted capacities Factory-installed accessoriesReliability Programmable drive capacityFactory-installed options Seek performance characteristics Performance characteristicsInternal drive characteristics Access timeFormat command execution time for 512-byte sectors minutes General performance characteristicsCache operation Start/stop timePrefetch/multi-segmented cache control Caching write data Prefetch operationPage Savvio 10K.2 SAS Product Manual, Rev. B Recoverable 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 monitorDST failure definition Temperature Log Page 0Dh Parameter Code DescriptionDrive Self Test DST ImplementationShort and extended tests State of the drive prior to testingInvoking DST Short test Function Code 001bAbort Product warrantyLog page entries ShippingProduct repair and return information DC power requirements Physical/electrical specificationsAC power requirements ST9146802SS DC power requirementsST973402SS Gbit mode Amps ST973402SS DC power requirementsGeneral DC power requirement notes Current profiles Power sequencingConducted noise immunity +5V +12VST973402SS current profile ST973402SS in 3 Gbit operation Power dissipationST9146802SS in 3 Gbit operation Temperature Environmental limitsShock and vibration Relative humidityEffective altitude sea level ShockPackage size Packaged/product weight Drop height Recommended mountingCorrosive environment Air cleanlinessVibration Acoustics Mechanical specifications Mounting configuration dimensionsSavvio 10K.2 SAS Product Manual, Rev. B Drive error recovery procedures Defect and error managementDrive internal defects/errors Page SAS system errors Background Media ScanIdle Read After Write Media Pre-ScanDeferred Auto-Reallocation Installation Drive orientationCooling Air flowDrive mounting GroundingSavvio 10K.2 SAS Product Manual, Rev. B SAS features Interface requirementsDual port support Command name Command code Supported Scsi commands supportedCommands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Savvio inquiry data Mode Sense dataInquiry data Bytes Data hexPage Mode Data Header 08 8b b9 98 00 00 02 Supported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous statusSAS physical interface Datum B Section C C Section a a Electrical description Physical characteristicsConnector requirements Pin descriptionsSAS transmitters and receivers Signal characteristicsPower Ready LED OutGeneral interface characteristics LED drive signalDifferential signals Eye masks Eye masks overviewReceive eye mask Jitter tolerance masksJitter 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 1Electrical TxRx connections Transmitter characteristicsImpedance requirements Sheet 2 = -5,437dB Tctf Receiver characteristics ISI loss example at 1.5 GbpsInternet MySeagate Spp.seagate.com Seagate Technology support servicesWarranty Service Presales SupportData Recovery Services Authorized Service Centers Data Recovery ServicesToll-free support numbers FAX services-All Europe toll callCall center Presales and Technical Support Warranty Service Seagate Service Centers Index NumericsPage SAS See also cooling Page Seagate Technology LLC
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ST973402SS, ST9146802SS specifications

The Seagate ST973402SS and ST9146802SS are high-performance, enterprise-grade hard drives designed to meet the demanding needs of data-intensive applications. These drives are part of Seagate's Savvio and Barracuda product lines, aimed specifically at businesses and institutions requiring reliability, speed, and efficiency in storage solutions.

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