Conducted noise immunity, Power sequencing | Seagate ST3600002SS

6.2.1Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.

+5V	=	250 mV pp from 0 to 100 kHz to 20 MHz
+12V	=	800 mV pp from 100 Hz to 8 KHz
		450 mV pp from 8 KHz to 20 KHz
		250 mV pp from 20 KHz to 5 MHz

6.2.2Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.

6.2.3Current profiles

The +12V and +5V current profiles are shown below in figure 1.

Note: All times and currents are typical. See Table 12 for maximum current requirements.

Cheetah NS 10K.2 SAS Product Manual, Rev. C

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Seagate ST3600002SS, ST3450802SS manual Conducted noise immunity, Power sequencing, Current profiles

Contents

ST3600002SS ST3450802SS Cheetah NS 10K.2 SASPage Contents Installation Defect and error managementSeagate Technology support services Interface requirements Scope Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibility Compliance Reference documents General description Media description Standard featuresPerformance Reliability Formatted capacities Factory-installed optionsProgrammable drive capacity Internal drive characteristics Performance characteristicsAccess time Seek performance General performance characteristics Format command execution time minutesStart/stop time Cache operation Prefetch/multi-segmented cache controlCaching write data Prefetch operation Error rates Reliability specificationsRecoverable Errors Unrecoverable Errors Interface errors Reliability and servicePreventive maintenance Hot plugging the drive Controlling S.M.A.R.T 4 S.M.A.R.TPerformance impact Reporting control Predictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor Drive Self Test DST Implementation DST failure definition Short test Function Code 001b Product warrantyExtended test Function Code 010b Shipping AC power requirements Physical/electrical specificationsDC power requirements ST3600002SS DC power requirements General DC power requirement notes ST3450802SS DC power requirements Conducted noise immunity Power sequencingCurrent profiles Typical ST3600002SS drive +5V and +12V current profiles ST3600002SS Power dissipationST3450802SS Environmental limits Temperature a. Operating Effective altitude sea level a. Operating Relative humidityShock and vibration Shock Recommended mounting Package size Packaged/product weight Drop height Vibration a. Operating-normal Air cleanlinessAcoustics Corrosive environment China Restriction of Hazardous Substances RoHS Directive Physical dimensions Mechanical specifications Drive internal defects/errors Defect and error managementDrive error recovery procedures 77.81 Background Media Scan SAS system errorsMedia Pre-Scan Deferred Auto-Reallocation Idle Read After Write Drive orientation Installation Air flow Cooling Grounding Drive mounting Interface requirements SAS features Dual port support Commands supported by Cheetah NS 10K.2 SAS family drives Scsi commands supported Commands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives 2Mode Sense data Inquiry dataBytes Data hex Page Mode Pages 2.1 ST3600002SS Mode Sense data 2.2 ST3450802SS Mode Sense data Miscellaneous features Miscellaneous operating features and conditionsSupported Feature or condition Miscellaneous status SAS physical interface Datum B Connector requirements Physical characteristics Electrical description Pin Signal name Signal typePin descriptions SAS pin descriptions Power Signal characteristicsSAS transmitters and receivers Ready LED Out Differential signals LED drive signalGeneral interface characteristics Eye masks Eye masks overview Receive eye mask X2OP 0, 5xadditional sinusoidal jitter X1OP Signal characteristica Units 5Gb/s 0Gb/s Transmitter signal characteristics Signal characteristic Units 5Gb/s 0Gb/s Receiver signal characteristicsMaximum allowable jitter 5Gb/s m, n 0Gb/s m, n Deterministic jitterq Impedance requirements Sheet 1 Receiver jitter tolerance5Gb/sa 0Gb/sa Sinusoidal Deterministic Total Jitterh Electrical TxRx connections Impedance requirements Sheet 2 = -5, 437dB Shows the zero-length test load Receiver characteristics SAS-2 Specification complianceAdditional information Presales Support Seagate Technology support servicesTechnical Support Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index Page SAS See also cooling Page Seagate Technology LLC