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User Manual
E727T0005, valid for E-727
BRO, 2019-06-28
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Page 138 / 240
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
b)
Identify the resonance peak(s) in the FFT display. To do so, place a cursor on the
peak and read out the cursor value which is displayed on the right hand side of the
graph. If there is more than one resonance peak, peak 1 is always the one with the
lowest
frequency.
In the figure below, cursor 1 is at the first resonance peak (372.31445 Hz), and
cursor 2 is at the second (next higher) resonance peak (729.37012 Hz).
7.
If necessary, adjust the notch filter settings in the
Parameter Settings
panel to the
measured resonant frequencies (adjustment is necessary if the values significantly
differ).
a)
Enter the frequency value of the first resonance peak in the
Notch Frequency 1
field
(in Hz). You can either right-click the field with the mouse and select the value from
a menu, or type the value in the field.