4-5
VIBXPERT 11.2010
Results
F
D
ELTA
: Show/hide delta cursor
Press the joystick (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).
S
IDEBANDS
: 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
The following overall values can be calculated from the time
waveform:
-
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 the joystick to switch between
the main and the outer cursor.
Left:
Time signal in circular plot
Right:
Signal postprocessing
Summary of Contents for VIB 5.300 EX Series
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