Seagate ST940110A manual Acoustics, Electromagnetic immunity, Drive level acoustics

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2.11Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea- surements are consistent with ISO document 7779. Sound power measurements are taken under essentially free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.

Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined by the following equation:

(Number of seeks per second = 0.4 / (average latency + average access time)

Table 4:	Drive level acoustics

Acoustic mode

Idle*		Quiet Seek	Performance Seek

2.3 bels (typ)		2.5 bels (typ)	3.0 bels (typ)
2.5 bels (max)		2.7 bels (max)	3.2 bels (max)

*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.

2.12Electromagnetic immunity

When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table:

Table 5:	Electromagnetic immunity

			Performance	Reference
Test		Description	level	standard

Electrostatic discharge		Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV	B	EN 61000-4-2: 95

Radiated RF immunity		80 to 1,000 MHz, 3 V/m,	A	EN 61000-4-3: 96
		80% AM with 1 kHz sine		ENV 50204: 95
		900 MHz, 3 V/m, 50% pulse modulation @ 200
		Hz

Electrical fast transient		± 1 kV on AC mains, ± 0.5 kV on external I/O	B	EN 61000-4-4: 95

Surge immunity		± 1 kV differential, ± 2 kV common, AC mains	B	EN 61000-4-5: 95

Conducted RF immunity		150 kHz to 80 MHz, 3 Vrms, 80% AM with 1	A	EN 61000-4-6: 97
		kHz sine

Voltage dips, interrupts		0% open, 5 seconds	C	EN 61000-4-11: 94
		0% short, 5 seconds	C
		40%, 0.10 seconds	C
		70%, 0.01 seconds	B

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

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Contents Momentus 4200 N-Lite Page Momentus 4200 N-Lite Page Rev. a 10/26/2004 All Revision status summary sheetRevision 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 readyConducted noise Typical current profileVoltage 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 certificationAustralian C-Tick N176 Korean RRLFCC 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 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 Identify Device command Word Description ValueXx07H Description if bit is set to Bit Features register values Set Features command4 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 / InternetCall Center Presales and Technical Support Warranty Service FAX Services-All Europe toll callToll-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