Display Data; Delete Data; Fft (Pce-Vt 3900 Only); Operation And Display - PCE Instruments PCE-VT 3900-ICA Bedienungsanleitung

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
with the UP / DOWN
PC software 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
software.
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.
The selected mode appears at the top left of the display and the current frequency resolution dF
is shown to the right. The frequency resolution dF depends on the maximum frequency of the
spectrum and the following settings are possible for vibration acceleration:
arrow keys. In addition, the measured values can be imported with the
Fig. 40 FFT menu
Max. frequency Frequency resolution dF
7812 Hz
3906 Hz
1953 Hz
976 Hz
© PCE Instruments
55
3.8 Hz
1.9 Hz
1.0 Hz
0.5 Hz