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SVAN 971 User Manual
71
13 RUNNING LEQ
To select the
Run. LEQ
function, enter the
Function
section, select the
Meas.
Funct
position and press the
<Enter>
key. In the
Meas. Funct
window, select the
Run. LEQ
position and the
<Enter>
key.
<ENT>
Note: It is not possible to change the current function during a measurement.
The instrument displays in this case for about 2 seconds the text
”Measurement in
Progress”. To change the current measurement function, the measurement must be stopped!
Running LEQ (
Run. LEQ
) is a special function of SVAN 971. This function is very
similar to the
Level Meter
. The difference is that in the
Run. LEQ
function there
are two additional measurement results:
LR15
and
LR60
.
LR15
and
LR60
are
calculated as LEQ during last 15 or 60 minutes of measurement. Therefore, these
results are not displayed before the expiration of time (accordingly 15 or 60
minutes).
For example, if
LR15
and
LR60
are displayed with RTC:15:04:11 it means, that:
-
LR15
was calculated as
Leq
for period from 14:49:12 to 15:04:11, and
-
LR60
was calculated as
Leq
for period from 14:04:12 to 15:04:11.
One second later (RTC:15:04:12) it will mean, that:
-
LR15
was calculated as
Leq
for period from 14:49:13 to 15:04:12, and
-
LR60
was calculated as
Leq
for period from 14:04:13 to 15:04:12.
Note: Results LR15 and LR60 are calculated only in the 1st profile
.
Results
LR15
and
LR60
can be saved in a file as
Summary Results
with the
Integr. Per
step (
path: <Menu> / Measurement / General Set
), or can be logged
with the
Logger Step
(
path: <Menu> / Measurement / Logging / Logger Set.
).
The minimal
Logger Step
for the
Run. LEQ
mode is
1s
.
Examples of
LR15
and
LR60
results in different display
modes:
Logger
and
3 Profiles
.
Содержание SVAN 971
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