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 Acoustical Noise Declaration for pSeries 690 Enterprise Server (More Information)
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| Declared Noise Emissions in Accordance with ISO 9296 |
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Product Description
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Declared A-Weighted Sound Power Level, L
WAd (B)
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Declared A-Weighted Sound Pressure Level, L
pAm (dB)
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Operating
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Idling
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Operating
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Idling
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IBM
eServer™® p690 Model 681 configured with one processor subsytem, one I/O drawer with 4 disk drives, bulk power subsytem, and Acoustical doors
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7.5
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7.5
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57
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57
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Same as above but with Slimline (non-acoustical) doors
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7.9
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7.9
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62
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62
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 | | 1.
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L
WAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B);
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2.
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L
pAm is the mean A-weighted emission sound pressure level measured at the 1-meter bystander positions (rounded to the nearest dB);
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3.
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10 dB (decibel) = 1 B (bel);
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4.
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All measurements made in conformance with ISO 7779 and declared in conformance with ISO 9296
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| Information on Relative Noisiness |
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Actual L
WAd for this product
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7.5
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L
WAd for a product that would sound roughly twice as loud or twice as noisy
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8.5
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L
WAd for a product that would sound roughly half as loud or half as noisy
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6.5
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Typical range of L
WAd values for similar IBM mainframe and UNIX high-end servers
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7.0 - 8.1 B
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| Information on the Emission of Prominent Discrete Tones and Impulsive Noise |
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This product emits no prominent discrete tones according to the methods of ECMA-74, Annex D.
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This product emits no impulsive noise according to the methods of ECMA-74, Annex E.
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