The table below lists every possibilities linking integration duration of the short Leq and displaying duration on the screen in sliding
mode.
Possible = X / inpossible = KO
Example : for a short Leq of 1 second, the time evolution in sliding mode on the screen can be from
10 s to 62 days!
The sound level meter controls automatically these durations when configuring and does not allow the
“KO”
combinations.
Note
: there is no saving of the time evolution in sliding mode on the screen, so a drawing of several hours or several days is not saved
at the end of the measurement
for reading after storage. It is only visible during and at the end of the measurement before storage.
The full drawing is accessible through the computer with the processing software.
5.1.1
Configuration before the measurement
From the 1
st
screen of measurement modes:
(follow the synoptic below)
➢
Configure the integration duration of the short Leq (between 1/16 s and 60 s) in area
1.
➢
Move the cursor in position
2
and select
Evolution
icon with the scrolling knob key
.
The short Leq drawing starts.
➢
Move the cursor in
3
and activate scrolling knob key to select the time unit and the different durations in
seconds (s)
,
minutes (mn),
hours
(h)
and
days (d)
- (cf table above).
From:
0...................1 s
to
0.................62 j
Info
: A press on the RST key erases the drawing in progress and starts it again.
From this moment, you can:
➢
Use the sound level meter without storage only to visualize the evolution of the weighted-A, C, Z short Leq and filtered
according the choice in
4.
➢
Launch a measurement with data storage pressing start key
In this case, during the storage, the configuration is inhibited. You can
consult the sliding drawings according to the different
weightings or filters without interrupt them or erase them.
17
Time evolution
option
The different durations are displayed under the time axis of the
screen.
3
