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Level 04a, June 21, 2004
Appendix C. Acoustics
This appendix provides information on acoustics for the zSeries 800.
Acoustical Noise Emission Levels
Relevant International Standards:
v Measurements: ISO 7779
v Declaration: ISO 9296
© Copyright IBM Corp. 2002, 2004
Table C-1. Table - Declared Acoustical Noise Emission Values
L
WAd
Operating
Configuration
(B)
All models
6.9
Note:
L
The declared (upper limit) sound power level for a random sample of machines.
WAd
L
The mean value of the A-weighted sound pressure levels at the operator position
pAm
(if any) for a random sample of machines.
<L
>
pA
m
The mean value of the A-weighted sound pressure levels at the one-meter
(bystander) positions for a random sample of machines.
N/A
Not applicable (no operator position).
B, dB
Abbreviations for bels and decibels, respectively.
All measurements made in accordance with ISO 7779, and reported in conformance with
ISO 9296.
L
pAm
Idling
Operating
(B)
(dB)
6.9
N/A
<L
>
pA
m
Idling
Operating
Idling
(dB)
(dB)
(dB)
N/A
52
52
C-1
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