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
Table
C-1.
Table
-
Declared
Acoustical
Noise
Emission
Values
Configuration
L
WAd
L
pAm
<L
pA
>
m
Operating
(B)
Idling
(B)
Operating
(dB)
Idling
(dB)
Operating
(dB)
Idling
(dB)
All
models
6.9
6.9
N/A
N/A
52
52
Note:
L
WAd
The
declared
(upper
limit)
sound
power
level
for
a
random
sample
of
machines.
L
pAm
The
mean
value
of
the
A-weighted
sound
pressure
levels
at
the
operator
position
(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.
Level
04a,
June
21,
2004
©
Copyright
IBM
Corp.
2002,
2004
C-1
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