Svantek SV 971A, Руководство пользователя

Страница: 51 / 305

SV 971A User Manual
51
5.1.4 Statistics view
“Statistics” is the cumulative probability density function of exceeding the noise level during the
measurement period. The X axis defines the probability of exceeding the noise level, statistical level
Ln ,
and the axis Y defines the calculated noise level in dB.
Statistics view fields
1. Cursor position
2. Statistics plot
3. Type of the plot
(Ln’s
), active profile, LEQ detector
( L inear, Fast, S low or I mpulse), used weighting
filter name ( A , C , Z or B )
4. Value (in dB) of the selected statistical level Ln for
the cursor position
5.
The cursor position can be changed with the
◄
/
►
key.
The profile can be changed with the
▲
/
▼
key pressed
with <Shift> .
◄..
5.1.5 Running SPL view
The Run. SPL view shows the SPL result when
measurement is not currently running. In this mode, the
SPL result is calculated and displayed, but not stored in
the file. The purpose of this view is to give the user a first
indication about the signal to be measured and for the
correct selection of the measurement range.
=>
5.1.6 File information view
The File Info position enables additional view with
information about the last saved logger file.
The File Info view indicates the file name and its size.
When Logger is Off ( path: <Menu> / Measurement
/Logging / Logger Set ) the File Info position is disabled.
=>
5.2 A
DJUSTING PLOT SCALE
–
D
ISPLAY
S
CALE
The Disp. Scale list of parameters enables adjusting the
scale of the plot and switching a grid on/off in the Logger
and Spectrum views.
<ENT>
3
4
2
1