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Acoustical Noise Declaration for System p5 520Q Express

  

Declared Noise Emissions in Accordance with ISO 9296
Product Description Declared A-Weighted Sound Power Level, L WAd (B) Declared A-Weighted Sound Pressure Level, L pAm (dB)
Operating Idling Operating Idling
Tower Server

with acoustic package

Models:

9111-520, 9131-52A

1 PS, 2 hard disk files 		5.1 5.0 33 31
Tower Server
Models:

9111-520, 9131-52A

1 PS, 2 hard disk files 		5.9 (5) 5.9 (5) 41 (5) 39 (5)
Rack Server
Models:

9111-520, 9131-52A

2 PS, 8 hard disk files 		6.1 (5) 6.0 (5) 43 (5) 41 (5)

Notes:
1.  L WAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B);
2.  L pAm is the mean A-weighted emission sound pressure level measured at the 1-meter bystander positions (rounded to the nearest dB);
3.  10 dB (decibel) = 1 B (bel);
4.  All measurements made in conformance with ISO 7779 and declared in conformance with ISO 9296
5.  Preliminary Data
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More information
What is an Acoustical Noise Declaration?  
Acoustical Noise Declarations for other IBM Products