© PCE Instruments
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8.3
Display data
Via the menu item
Display data
, the individual measuring spots can be selected and the measured
values can be displayed. The measuring spot name is displayed in the title and the measuring
parameters of this measuring spot are displayed below it. The measured values recorded during
the route measurement are displayed in the list below sorted by date and can be scrolled through
w ith the
UP
/ DOWN
arrow keys. In addition, the measured values can be imported w ith the
PC softw are and displayed graphically.
8.4
Delete data
Use the menu item
Delete all
to delete all saved measured values from all measuring spots. The
routes themselves remain. In addition, the measured values can also be deleted via the PC
softw are.
9
FFT (PCE-VT 3900 only)
The FFT analysis is used to display the vibration signal in the frequency range. Thus, either the
amplitudes of the vibration acceleration or of the vibration velocity can be displayed in
dependence on the frequency. With the FFT analysis, 2048 frequency lines are calculated and
different frequency resolutions are possible depending on the maximum frequency of the
spectrum.
9.1
Operation and display
In the
FFT
menu, the desired measuring mode
– either vibration acceleration or vibration velocity
– must be selected.
Fig. 40 FFT menu
The selected mode appears at the top left of the display and the current frequency resolution
dF
is show n to the right. The frequency resolution
dF
depends on the maximum frequency of the
spectrum and the follow ing settings are possible for vibration acceleration:
Max. frequency
Frequency resolution
dF
7812 Hz
3.8 Hz
3906 Hz
1.9 Hz
1953 Hz
1.0 Hz
976 Hz
0.5 Hz
E
n
g
lis
h
Summary of Contents for PCE-VT 3800
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