Typical current profile, Conducted noise | Seagate ST940110A

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

Image 18

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 drive Momentus 4200 N-Lite Product Manual, Rev. a Specifications Drive specificationsSpecification summary Drive specification ST940110A Specifications Formatted capacity Default logical geometryLBA mode Physical organization Recording and interface technology Physical characteristicsTechnology Specification Seek time Power specifications Time to ready Typical current profile Conducted noiseVoltage tolerance Active mode Power-management modesPower management modes Idle mode Environmental specifications Nonoperating shock ShockOperating shock Vibration Drive level acoustics AcousticsElectromagnetic immunity Electromagnetic immunity Reliability Safety certificationMeasurement type Specification Agency certification Korean RRL Australian C-Tick N176FCC verification Jumper settings Configuring and mounting the driveHandling and static discharge precautions Master/slave configuration Drive mounting Cable-select option Connector Cable Signal Name Contact Conductor ATA interface signals and connector pinsConnector signals Cable Connector Conductor Contact Signal Name Supported 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 Value Xx07H 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. command Presales Support Seagate Technology support servicesInternet MySeagate Reseller.seagate.com Technical Support Warranty Service Authorized Service Centers Americas 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 / Internet FAX 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