Typical ST39205 drive +12 V current profile | Seagate ST318405LW/LC

26	Cheetah 36XL Product Manual, Rev. E

+12 Volt Current during spindle start – Typical Amperes

3.0
					AC Envelope
2.5
				Nominal (average) DC curve
2.0
1.5
A
1.0
0.5
0.0
T0	T1	T2	T3		T4	T5
T0			T3			T5
	0.0		2	4	6	8	10	12	14	16
						Seconds

Figure 5. Typical ST39205 drive +12 V current profile

+5 Volt Current during spindle start – Typical Amperes

3.0
2.5
			AC Envelope			Nominal (average) DC curve
						Nominal (average) DC curve
2.0
1.5
A
1.0
0.5
0.0
T0	T1		T2	T3		T4	T5
T0				T3			T5
0.0	2	4	6	8	10	12	14	16
				Seconds

Figure 6. Typical ST336705 drive +5 V current profile

Image 36

Contents

Cheetah 36XL Family ST336705LW/LC ST318405LW/LC ST39205LW/LC Page Cheetah 36XL Family ST336705LW/LC ST318405LW/LC ST39205LW/LC Page Revision status summary sheet Revision Date Writer/Engineer Sheets AffectedPage Contents Defect and error management InstallationSeagate Technology support services Interface requirements List of Figures Cheetah 36XL Product Manual, Rev. E ViiPage Scope Cheetah 36XL family drive ST336705LC shown Cheetah 36XL Product Manual, Rev. E Applicable standards and reference documentation Australian C-Tick Korean MICTaiwanese Bsmi General description Cheetah 36XL family drive Cheetah 36XL Product Manual, Rev. E Standard features Media characteristicsPerformance Reliability Factory installed accessories Options factory installedFormatted capacities Programmable drive capacity Performance characteristics Ultra2 Scsi Ultra160 Scsi Start/stop timePrefetch/multi-segmented cache control Cache operation Caching write data Prefetch operation Cheetah 36XL Product Manual, Rev. E Cheetah 36XL Product Manual, Rev. E Reliability specifications Reliability and service Preventive maintenanceService life Service philosophy 7 S.M.A.R.T Controlling S.M.A.R.T Performance impact Reporting controlDetermining rate Predictive failures State of the drive prior to testing DST Failure DefinitionImplementation Invoking DST Product warranty Short test Function Code 001bExtended test Function Code 010b Log page entries Product repair and return information Cheetah 36XL Product Manual, Rev. E Physical/electrical specifications AC power requirementsDC power requirements Power sequencing Conducted noise immunity3 12 V Current profile Typical ST336705 drive +12 V current profile Typical ST39205 drive +12 V current profile TypicalST318405 drive +5 V current profile Power dissipation ST336705 Cheetah 36XL Product Manual, Rev. E ST318405 Os per Second Temperature ST39205Environmental limits Relative humidity Effective altitude sea levelShock and vibration Shock Package size Packaged/product weight Drop height Recommended mounting Air cleanliness VibrationAcoustics LW mounting configuration dimensions LC mounting configuration dimensions Defect and error management Drive error recovery proceduresDrive internal defects Scsi systems errors Installation Configure drive optionsFormatting Drive ID/option select header Do not install jumpers retain cover J5 jumper header on LW model only J2 option select header Cheetah 36XL Product Manual, Rev. E Function description Does not apply to LC models Drive orientation CoolingDrive mounting Grounding Interface requirements Scsi interface messages supported Scsi interface commands supported Cheetah 36XL Product Manual, Rev. E Commands supported by Cheetah 36XL family drive Mode Sense data Inquiry Vital Product data Cheetah 36XL Product Manual, Rev. E Mode Sense Data Cheetah 36XL Product Manual, Rev. E Mode sense data, ST318405 values Bytes Cheetah 36XL Product Manual, Rev. E Mode sense data, ST39205 values Bytes Cheetah 36XL Product Manual, Rev. E Condition/features supported DC cable and connector 2 REQ/ACK offsetPhysical interface Pin Power Scsi interface physical description Scsi interface cable requirements Mating connectors Mating connectors for LW model drivesMating connectors for LC model drives ST336705LC, ST318405LC and ST39205LC Right-angle to Pcba connectors Scsi ID Nonshielded 68 pin Scsi device connector used on LW drives Nonshielded 80 pin Scsi SCA-2 connector, used on LC drives GND +DBP1 Charge 68Cheetah 36XL Product Manual, Rev. E Multimode signals Electrical descriptionMultimode-SE and LVD alternatives Output characteristics Input characteristics General cable characteristics Terminator requirements Terminator power LW drivesLow voltage differential I/O circuits LC drives Disc drive Scsi timing Drive activity remote LED signal status Cheetah 36XL Product Manual, Rev. E Seagate Technology support services Online Services Automated ServicesPresales Support Technical Support Customer Service CSO USA/Canada/Latin America Support ServicesEuropean Support Services Africa/Middle East Support Services Asia/Pacific Support ServicesCall Center Toll-free Direct dial Cheetah 36XL Product Manual, Rev. E Index Symbols Cheetah 36XL Product Manual, Rev. E LED PCB System chassis Page