Typical current profile, Conducted noise | Seagate ST93015A guide

2.9.1.1Typical current profile

+5 Volt Current during spindle start — Typical Amperes

	1.2
	1.0
	0.8
Amps	0.6
	0.4
	0.2
	0.0
	0.0	0.5	1.0	1.5	2.0	2.5	3.0	3.5	4.0	4.5
						Seconds

Figure 2. Typical 5V startup and operation current profile

2.9.2Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on the +5 volt line.

Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

2.9.3Voltage tolerance

Voltage tolerance (including noise): 5V ± 5%

Momentus 42 Product Manual, Rev. A

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Contents

Momentus Page Momentus Page Rev. a 05/03/2004 All Revision status summary sheetRevision Date Sheets Affected Page Contents Momentus 42 Product Manual, Rev. a List of Figures Viii Momentus 42 Product Manual, Rev. a Momentus 42 disc drive Introduction Momentus 42 Product Manual, Rev. a Drive specification ST94019A ST93015A ST92014A Drive specificationsSpecification summary Specifications Specifications Physical organization Default logical geometryLBA mode Formatted capacity Technology Specification Physical characteristicsRecording and interface technology Time to ready Typical Max Seek timeTime to ready Typical seek times msec Read Write Power specifications Conducted noise Typical current profileVoltage tolerance Idle mode Power-management modesPower management modes Active mode Environmental specifications Vibration ShockOperating shock Nonoperating shock Electromagnetic immunity AcousticsElectromagnetic immunity Drive level acoustics Agency certification Safety certificationMeasurement type Specification Reliability Australian C-Tick N176 Korean RRLFCC verification Momentus 42 Product Manual, Rev. a Master/slave configuration Configuring and mounting the driveHandling and static discharge precautions Jumper settings Cable-select option Drive mounting Cable Connector Conductor Contact Signal Name ATA interface signals and connector pinsConnector signals Connector Cable Signal Name Contact Conductor Supported commands Supported ATA commandsCommand name Command code in hex ATA-standard commands ATA-standard power-management commands Command name Command code in hexATA-standard security commands Word Description Value Identify Device command XxxxH Description if bit is set to Bit Features register values Set Features command Supported S.M.A.R.T. commands 4 S.M.A.R.T. commandsCode in features register A.R.T. command Technical Support Seagate Technology support servicesInternet MySeagate Reseller.seagate.com Presales Support Authorized Service Centers Warranty Service Call Center Toll-free Direct dial FAX / Internet Call Center Toll-free Direct dialAmericas +1-405-324-47301 +1-405-324-4704 Americas SEAGATE2 +1-405-324-47003 +1-405-324-4702 Call Center Presales and Technical Support Warranty Service FAX Services-All Europe toll callToll-Free Support Numbers Asia/Pacific Support Services Momentus 42 Product Manual, Rev. a Numerics IndexPage Page Momentus 42 Product Manual, Rev. a Page Seagate Technology LLC