Acoustical Noise Emissions; Declared Acoustical Noise Emissions - IBM eserver pSeries 690 Installation Manual

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
7040 Acoustical Doors
7040 Slimline Doors
Notes:
1. Noise levels cited are for the typical configuration (A-Frame: Bulk Power, CEC cage, battery
option, media drawer, and two I/O drawers).
2. The 0.6-B (6-dB) reduction in noise emission levels with the acoustical rear door corresponds
to a factor of 4 reduction. That is, the noise level of a single A-Frame with Slimline covers is
about the same as the noise level of four A-Frames with acoustical covers.
3. L
WAd
pressure level at the 1-meter bystander positions; 1 B = 10 dB.
4. All measurements made in conformance with ISO 7779 and declared in conformance with
ISO 9296.
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pSeries 690 Installation Guide
Declared A-Weighted Sound
Power Level, L
Operating
7.5
7.9
is the upper-limit A-weighted sound power level; LpAm is the mean A-weighted sound
Acoustical Characteristic
Declared A-Weighted Sound
(B) Pressure Level, LpAm (dB)
WAd
Idle Operating
7.5 57
7.9 62
Idle
57
62