CAE SoundCam Series, Руководство по эксплуатации продукта, Страница: 22 / 48

Long-term measurement (LTM)
Manual SoundCam 22
4.4 Long-term measurement (LTM)
The long-term measurement can be activated in the settings
(see Figure 21 and Figure 22).
In the LTM menu, a recording interval can be set in the range
between 10 and 900 seconds.
For each interval, the following data are determined and
stored in a TDMS file:
o
Averaged acoutic image (mean values oft he
individual acoustic images)
o
Acoustic peak hold image (maxima oft he acoustic
frames)
o
Mean value spectrum
o
Peak-Hold-Spectrum (maxima)
o
Camera image
The display of the data can be adjusted. Pressing and holding
on the acoustic image (Windows: right-click) opens the
associated context menu (see Figure 23).
This offers the following options for long-term
measurement:
Pressing and holding on the spectrum (Windows: right click) also opens the corresponding context
menu (see Figure 24).
This offers the following options:
Currently, the acoustic average image is displayed. If
you click on this button, it switches to the acoustic
peak hold picture.
Currently, the acoustic peak hold picture is displayed.
If you click on this button, it switches to the acoustic
average picture.
Show / hide the global spectrum (red curve).
Show / hide the averaged spectrum (green curve).
Show / hide the peak hold spectrum (yellow curve).
Show / hide the local spectrum (blue curve).
Figure 21: Settings menu
Figure 22: LTM menu
Figure 23:
Context menu
for the
acoustic
image
Figure 24:
Context menu for
the spectrum