SV 258 PRO (AG) User Manual
38
4.3.5 Setting the parameters for sound measurements
– Sound
The fourth channel in the station can be used to measure noise in accordance
with the requirements of class 1. The results such as
LR
,
Leq
,
Lpeak
,
Lmax
and
Lmin
, selected in the
Results
screen are recorded together with the vibration
velocity and acceleration results making the correlation of sound and vibrations
much easier.
The
Sound
position appears in the
Menu
list if
the
Sound
was enabled in the
Application
screen.
It opens a screen with additional menu, which
contains three positions:
Measurement Setup
,
Results
and
Statistical Levels
.
<ENT>
The
Measurement Setup
position opens a
screen in which you can:
•
select a measurement range (
Range
):
Low
or
High
,
•
select
the
microphone
correction
(
Mic. Corr.
):
Environment
,
Diffuse
or
Free Field
.
<ENT>
Leq detector time constants are applied to the
Leq
,
LAE
,
L10
and
L95
results.
Lmax
and
Lmin
results are
calculated with
Fast
and
Slow
constants simultaneously (
LFmax
,
LSmax
,
LFmin
, and
LSmin
).
The
Results
position opens a screen in which
you can select results for displaying and saving.
The list of results consists of:
•
Leq
measured with filter
A
,
C
and
Z
;
•
Lpeak
measured with filter
A
,
C
and
Z
;
•
Lmax
and
Lmin
measured with filter
A
,
C
,
Z
and time constant Fast (
F
), Slow (
S
).
<ENT>
Used weighting filters are:
•
A
class 1 according to IEC 651 and IEC 61672-1:2013 standards,
•
C
class 1 according to IEC 651 and IEC 61672-1:2013 standards,
•
Z
class 1 according to IEC 61672-1:2013 standard.
In the
Statistical Levels
window, you can define
ten statistical levels, named from
N1
to
N10
, to
be calculated, displayed and saved in the file.
The default statistical levels have following
settings:
10
,
20
,
30
,
40
,
50
,
60
,
70
,
80
,
90
and
95
. All values should be within the integer range
[1, 99]. Each individual value can be set
independently from others.
<ENT>
4.3.6
Programming the instrument’s internal timer – Timer
