Seagate ST940110A manual Typical current profile, Conducted noise, Voltage tolerance

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Table 2:	DC power

Power dissipation (watts)		Average (watts, 25° C)	5V typical amps

Seeking		2.4	0.48

Read		2.4	0.48

Write		2.4	0.48

Standby		0.36	0.07

Sleep		0.36	0.07

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

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%

8	Momentus 4200 N-Lite Product Manual, Rev. A

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Contents Momentus 4200 N-Lite Page Momentus 4200 N-Lite Page Revision status summary sheet Rev. a 10/26/2004 AllRevision Date Sheets Affected Page Contents Momentus 4200 N-Lite Product Manual, Rev. a List of Figures Viii Momentus 4200 N-Lite Product Manual, Rev. a Introduction Momentus 4200 N-Lite disc driveMomentus 4200 N-Lite Product Manual, Rev. a Specifications Drive specificationsSpecification summary Drive specification ST940110ASpecifications Formatted capacity Default logical geometryLBA mode Physical organizationRecording and interface technology Physical characteristicsTechnology Specification Seek timePower specifications Time to readyTypical current profile Conducted noiseVoltage tolerance Active mode Power-management modesPower management modes Idle modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationDrive level acoustics AcousticsElectromagnetic immunity Electromagnetic immunityReliability Safety certificationMeasurement type Specification Agency certificationKorean RRL Australian C-Tick N176FCC verification Jumper settings Configuring and mounting the driveHandling and static discharge precautions Master/slave configurationDrive mounting Cable-select optionConnector Cable Signal Name Contact Conductor ATA interface signals and connector pinsConnector signals Cable Connector Conductor Contact Signal NameSupported ATA commands Supported commandsCommand name Command code in hex ATA-standard commands Command name Command code in hex ATA-standard power-management commandsATA-standard security commands Identify Device command Word Description ValueXx07H Description if bit is set to Bit Set Features command Features register values4 S.M.A.R.T. commands Supported S.M.A.R.T. commands Code in features register A.R.T. commandPresales Support Seagate Technology support servicesInternet MySeagate Reseller.seagate.com Technical SupportWarranty Service Authorized Service CentersAmericas SEAGATE2 +1-405-324-47003 +1-405-324-4702 Call Center Toll-free Direct dialAmericas +1-405-324-47301 +1-405-324-4704 Call Center Toll-free Direct dial FAX / InternetFAX Services-All Europe toll call Call Center Presales and Technical Support Warranty ServiceToll-Free Support Numbers Asia/Pacific Support Services Momentus 4200 N-Lite Product Manual, Rev. a Index NumericsPage Page Momentus 4200 N-Lite Product Manual, Rev. a Page Seagate Technology LLC