Model 90 Quantifier Sound Level Meter
Page 41
Key Press
Display
Comments
Select the required Frequency
Weighting and press OK to select.
The select Frequency Weighting is
indicated by a tick.
Press Exit to return to the main
display.
The Frequency Weighting applies to the following parameters:
Broadband Mode
Integrated Sound Level L
Aeq
,L
Ceq
, or LZ
eq
Sound Level
L
AF
,L
AS
,L
AI
,L
CF
,L
CS
,L
CI
,L
ZF
,L
ZS
or L
ZI
(not stored)
Maximum Sound Leve
L
AFmax
,L
ASmax
,L
AImax
,L
CFmax
,L
CSmax
,L
CImax
,L
ZFmax
,L
ZSmax
or L
ZImax
Minimum Sound Level
L
AFmin
,L
ASmin
,L
AImin
,L
CFmin
,L
CSmin
,L
CImin
,L
ZFmin
,L
ZSmin
or L
ZImin
User Metric
L
AE
,L
CE
,or L
ZE
,L
AIeq
,L
CIeq
, or L
ZIeq
, L
AFTeq
1:1 Octave Band Mode
No measurements are affected by the Frequency Weighting. All 1:1 Octave Bands are
measured with the Z Frequency Weighting.
1:3 Octave Band Mode
No measurements are affected by the Frequency Weighting. All 1:3 Octave Bands are
measured with the Z Frequency Weighting.
Ln values
The five preset Ln or Statistical values that are calculated at the end of a Broadband
measurement can be configured to different values.
The default values are L
1.0
, L
10.0
, L
50.0
, L
90.0
and L
95.0
To change the Ln values, select Change Ln Values from the Setup Menu.
