Plug-In Modules
Bode Measurement
foamed plastic can be used to underlay the axis. If the axis is equipped with a brake, the brake has to be
released during the measurement. In case of air bearings the correct air pressure must be applied.
4.3.2 Measurement Setup
To start the measurement click the
Measure Bode Plot…
button (Figure 30). This opens the window
with the application as shown in Figure 31.
The following parameters can be set:
Min Frequency
: This parameter defines the lower limit of the frequency range used for the mea-
surement (default 20Hz).
Max Frequency
: This parameter defines the upper limit of the frequency range (default 10kHz).
Frequency Steps
: This parameter defines the resolution of the measurement in the frequency
range. Depending on the 'Spacing' parameter the range defined by 'Min Frequency' and 'Max Fre-
quency is divided logarithmically or linearly into the number of 'Frequency Steps'. With a higher
number of frequency steps, the measurement takes longer but will provide a higher resolution
which is especially crucial to capture sharp resonances (default 300 Steps).
Wait Before Acquire
: This parameter defines the wait time between the start of the harmonic ex-
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Figure 31: Bode measurement application.
