CASELLA CEL CEL-450 Handbook page 29

Real-time sound level meters
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Operation Press
Display Shows
7. Select
or
Functions
from the
Setup
then
screen to
enable
Cumulative
parameters
to be set
8. Select
measure-
ment
functions
from the
Cumulative
screen
Select Mode & Setup
Comments
This screen allows selection
of cumulative (CUM)
measurement where the
function's value will be
accumulated both over the
whole run, and over regular
periods. The screen also
allows selection of Profile
measurement where the
values will be recorded at
regular intervals to give a
profile of the run.
The Profile interval can be
set to:
10, 20, 50, 100, 250, 500,
milliseconds,
1, 5, 10, 15, 20, 30 seconds,
1, 5, 10, 15, 20, 30 minutes.
When both Period and
Profile times are switched
off, the instrument will skip
this screen a go directly to
the selection of cumulative
functions, Step 8.
This screen allows the
following measurement
functions to be specified
(√ =enabled, X =disabled)
using the weightings set in
step 6 above:
L
AF
LTm5
L
H
AFmx
ML
L
L
AFmn
AF10.0
L
LAeq
AF50.0
L
L
Zpk
AF90.0
L
L
A E
AF95.0
L
L
EP,8h
AF99.0
L
L
Large
Tm3
AF
Histogram.
L
Large allows the
AF
principal parameter shown in
large characters on the
display to be changed to any
of the selected functions.
Any L
% value between
AF
0.1 and 99.9 can be set.
CEL-450/490 Operators Handbook - Page 29

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