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Acoustical Noise Declaration for System p5 520 Express

Declared Noise Emissions in Accordance with ISO 9296
Product Description Declared A-Weighted Sound Power Level,
LWAd(B)		 Declared A-Weighted Sound Pressure Level,
LpAm(dB)

Operating

Idling

Operating

Idling
Tower Server with acoustic package
Models: 9406-520, 9505-520
1 PS, 2 hard disk files		 5.1 5.0 33 31
Tower Server
Models: 9406-520, 9505-520
1 PS, 2 hard disk files		 5.9 (5) 5.9 (5) 41 (5) 39 (5)
Rack Server
Model: 9406-520
2 PS, 8 hard disk files		 6.1 (5) 6.0 (5) 43 (5) 41 (5)

Notes:

1. LWAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B);
2. LpAm 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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