Seagate ST9250311CS Acoustics, Electromagnetic immunity, Test for Prominent Discrete Tones PDTs

Page 19

2.11Acoustics

Drive emission of sound is measured consistent with the ECMA-74 and its’ referenced standards. Testing is conducted at room temperature (approximately 25°C). Emission levels are reported as the total A-weighted sound power levels for steady state, idle, and active seek modes of operation.

Table 5: Drive A-weighted Sound Power Levels (SWL, BA)

Idle*

CE seek

 

 

2.0 bels (typ)

2.1 bels (typ)

2.1 bels (max)

2.2 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.

Test for Prominent Discrete Tones (PDTs)

Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this pro- cess is the use of the absolute threshold of hearing. Seagate uses the lower limit for the threshold curve* to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards.

*Defined as the median curve given by ISO 389-7 (Tf curve) minus 10dB at all frequencies.

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 6:

Radio frequency environments

 

 

 

 

 

 

 

 

 

 

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 2,000 MHz, 10 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 kHz

A

EN 61000-4-6: 97

 

 

sine

 

 

 

 

 

 

Power Frequency H-field

1 A/m, 50Hz/60Hz, 3 axes

A

EN 61000-4-8: 97

immunity

 

 

 

 

 

 

 

 

Voltage dips, interrupts

30% Reduction for 25 cycles

C

EN 61000-4-11: 94

 

 

>95% Reduction for 250 cycles

C

 

 

 

>95%, 0.5 cycles

B

 

 

 

 

 

 

Pipeline HD Mini Series SATA Product Manual, Rev. A

13

Page 18 Page 20
Image 19
Page 18 Page 20
Contents ST9250311CS ST91603110CS Pipeline HD Mini Series SataRevision Date Revision historyContents Pipeline HD Mini Series Sata Product Manual, Rev. a List of Figures Page Introduction About the Serial ATA interface Specification summary table Drive specificationsDrive specifications Cylinders Read/write heads Sectors per track 16,383 Default logical geometryLBA mode Formatted capacityRecording and interface technology Physical characteristicsDrive specification Physical organizationSeek times msec Read Seek timeStart/stop times Typical seek timesPower specifications Conducted noise Typical current profileVoltage tolerance Idle mode Power-management modesPower management modes Active modeEnvironmental specifications Vibration ShockOperating shock Nonoperating shockTest for Prominent Discrete Tones PDTs Drive A-weighted Sound Power Levels SWL, BAAcoustics Electromagnetic immunityReliability Measurement type SpecificationKorean RRL Safety certificationAgency certification Electromagnetic compatibilityFCC verification China Restriction of Hazardous Substances RoHS Directive Environmental protectionCorrosive environment European Union Restriction of Hazardous Substances RoHSPipeline HD Mini Series Sata Product Manual, Rev. a Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveTop cover stiffness/deflection Drive mountingMeasurements shown in are in inches Segment Pin Function Definition Serial ATA connector pin definitionsSignal Serial ATA Sata interfaceP10 Ground 2nd mate P11 Reserved Pin Function DefinitionCommand name Command code in hex ATA-standard commands Supported ATA commandsCommand name Command code in hex ATA-standard security commands Word Description Value Identify Device commandXx07H Description if bit is set to Bit Pipeline HD Mini Series Sata Product Manual, Rev. a Set Features command values Set Features commandA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Pipeline HD Mini Series Sata Product Manual, Rev. a Presales Support Seagate Technology support servicesTechnical Support Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index ITE TPI Pipeline HD Mini Series Sata Product Manual, Rev. a Page Seagate Technology LLC

ST91603110CS, ST9250311CS specifications

The Seagate ST9250311CS and ST9160311CS are notable hard drives in the field of data storage, specifically designed for reliability and performance in a range of applications, including consumer electronics and personal computing.

The ST9250311CS is a 250GB Serial ATA hard drive, while the ST9160311CS offers a larger capacity of 160GB, both providing a balance of speed and efficiency for users seeking dependable storage solutions. These drives are built to meet the demands of today’s digital content, offering ample storage for photos, videos, music, and applications.

One of the standout features of these drives is their 2.5-inch form factor, making them suitable for laptops, external enclosures, and other compact devices. The drives utilize SATA interfaces, providing faster data transfer rates compared to older IDE technologies. The SATA interface also enhances overall system performance by allowing for quicker boot-up times and faster access to stored data.

Another distinguishing characteristic of these Seagate models is their 5400 RPM rotational speed. While not the fastest in the market, this speed is well-balanced, ensuring a quieter operation and lower power consumption, which is particularly important for battery-operated devices like laptops. This energy efficiency extends the overall battery life, making it an ideal choice for mobile users who require long-lasting performance on the go.

The ST9250311CS and ST9160311CS also feature advanced data protection technologies, ensuring the integrity and safety of stored data. Their Shock Protection System helps to guard against data loss due to impacts and vibrations, while the integrated thermal management technology keeps the drives cool during operation. Additionally, data redundancy capabilities assist in minimizing the risk of data corruption.

In terms of compatibility, these drives support various operating systems, including Windows and Linux, making them a versatile option for a wide range of users. Their reliability is backed by Seagate’s reputation in the industry and comprehensive warranty options.

The Seagate ST9250311CS and ST9160311CS hard drives provide a solid blend of performance, reliability, and efficiency, catering to users in both personal and professional environments, capable of handling data-intensive tasks while ensuring long-term durability and sustained performance.
Top Page Image Contents