IBM pSeries 650, Installation Manual

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Acoustical Noise Emissions
The equivalent continuous A-weighted sound pressure level at workstations (emission sound pressure
level at the 1-meter bystander positions) does not exceed 70 dB(A).
Der Geräuschpegel der Einheit ist kleiner oder gleich 70 db(A).
Declared Acoustical Noise Emissions
Product
Configuration
Declared A-Weighted Sound Power Level,
LWAd (B)
Declared A-Weighted Sound Pressure
Level, <LpAm>(dB) at 1 meter Bystander
Position
Operating Idling Operating Idling
Processor Subsystem 6.1 bels 6.1 bels 44 dBA 44 dBA
Notes:
1.
LWAd
is the declared (upper limit) sound power level for a random sample of machines. (1B = 10dB)
2.
LpAm
is the mean value of the A-weighted sound pressure level at the 1-meter bystander positions for a random
sample of machines.
3. All measurements are made in accordance with ISO DIS 779 and reported in conformance with ISO DIS 7574/4.
4. The L
WAd
emission increases to 6.5 bels with a configuration of one 7038-6M2 and four 7311-D10 drawers.
5. The L
pA
>
m
emission increases to 48 dBA with a configuration of one 7038-6M2 and four 7311-D10 drawers.
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pSeries 650 Installation Guide