Casella CEL CEL-281 - Manual (Page 109)

1 min. slow max Maximum SPL taken over a 1 minute
sampling period with slow response,
1 min. imp. max Maximum SPL taken over a 1 minute
sampling period with impulse response,
10 sec. fast max Maximum SPL taken over a 10 second
sampling period with fast response,
10 sec. slow max Maximum SPL taken over a 10 second
sampling period with slow response
10 sec. imp. max Maximum SPL taken over a 10 second
sampling period with impulse response,
1 sec. fast max Maximum SPL taken over a 1 second
sampling period with fast response, and
results stored for only the most recent hour,
1 sec. slow max Maximum SPL taken over a 1 second
sampling period with slow response, and
results stored for only the most recent hour,
1 sec. imp. max Maximum SPL taken over a 1 second
sampling period with impulse response, and
results stored for only the most recent hour,
1 min. L AVG L AVG with Q = 4, 5, or 6, taken over 1 minute
sampling period, (the results obtained with all
three of these Q values are stored),
1 min. L eq L AVG with Q = 3 taken over 1 minute sampling
period.
Note: Data can be displayed for these parameters only when a logging run has
occurred and the store contains data. If the logging run is still in progress, the
display is dynamic and may be seen to change to new values.
The time constant used for the LAVG value displayed will be the constant set
at the time the data was stored.
The different sampling periods allow the operator to examine a
profile quickly using one of the longer sampling periods, then
"zoom in" to areas of particular interest to inspect them in much
finer detail.
4. Press the key to display the relevant time.
Page 100 - CEL-281 Operator's Handbook
Obtaining Required Results_