4-5
Results
Left:
Time signal in circular plot
Right:
Signal postprocessing
Delta: Show/hide delta cursor
Press 'Enter' to switch over between main and delta cursor. In
this case the measurement can only be repeated via the MENU
key (MENU - 'Remeasure')! The cursor coordinates indicate
the distance to the main cursor. The data field specifies the
frequency which corresponds to the distance between the main
and delta cursor (see below).
Sidebands: Show/hide sideband cursor
Select the number of sidebands. The spacing of the sidebands is
set by moving the outer cursor*. The position of the entire group
can be changed by moving the middle (main) cursor.
Cartesian / circular plot
By default, the time waveform is displayed in a Cartesian plot
(XY diagram). However, you can change the display to a circular
plot. This is useful when the gear mesh in a gear stage is to be
emphasized, for example. In this type of display, the measured time
interval is projected on a circle, so that the start and end times are
directly adjacent to one another. If the shaft rotates by 360° within
the measured time interval, the circular diagram shows the signal
for one complete rotation of the shaft.
• Press the F key to toggle the two diagram types (see below).
Signal post processing
Calculating the characteristic overall values from the signal
The following overall values can be calculated:
- Maximum / minimum amplitude,
- Arithmetic mean, p-p value, RMS value, Crest factor.
• Press the MENU key in the result screen.
• Select ‘Postprocessing’ and click on ‘Compute overall values’.
* press 'Enter' to switch between the
main and the outer cursor.
Summary of Contents for VIB 5.310
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