Declaration Of Noise Emission Values For Ibm 6151 - IBM RT PC Manual To Operations

Declaration of Noise Emission Values for IBM 6151
L
WAd
Operating Idle
(bels) (bels)
6.0 6.0
The following chart describes the machine noise levels for IBM 6151.
Stated noise levels are subject to change.
Product
Type Description
6151
System Console
LpAm
<LpA>m
Impulsive Prominent
Noise Discrete
Tones
Operating Idle (dB) Operating Idle (dB) {aLI}
(dB)
(dB)
51.0 51.0 46.0 46.0
No Yes
Notes:
1. L
WAd
is the declared sound power emission level for a production series
of machines.
2.
LpAm
is the mean value of the sound pressure emission levels at the
operator position for a production series of machines.
3.
<LpA>m
is the mean value of the space-averaged sound pressure
emission levels at the one-meter positions for a production series of
machines.
All measurements are made in accordance with ISO DIS 7779, and reported
in conformance with ISO DIS 7574/4.
Section 1. Operating the IBM R T PC System 1-7