Acoustical Noise Emissions; Declared Acoustical Noise Emissions - IBM pSeries 670 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 a typical configuration (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 frame with thin covers is about the same as the noise level of four
frames with acoustical covers.
3. L is the upper-limit A-weighted sound power level; LpAm is the mean A-weighted sound pressure level at the
WAd
1-meter bystander positions; 1 B = 10 dB.
4. All measurements made in conformance with ISO 7779 and declared in conformance with ISO 9296.
106 Eserver pSeries 670 Installation Guide
Declared A-Weighted Sound Power
Level, L (B)
WAd
Operating
7.5
7.9
Acoustical Characteristic
Declared A-Weighted Sound Pressure
Level, LpAm (dB)
Idle Operating
7.5 57
7.9 62
Idle
57
62