User`s manual

Operating Procedures
3
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3. Operating Procedures
9. Check the waveform to determine whether or not to make measurements again.
When the resonance point is easily seen:
Proceed to the next section 3.5.4, "Notch filter setup procedure".
The waveform shown in step 7 indicates that a relatively clear resonance point was
measured. If a clear resonance point like this was not obtained, then make the
measurement again as explained next. You might then be able to measure a clear
waveform.
If the resonance point is not easily seen:
Change the frequency range (A) explained earlier so that the measurement
frequency is 5 times the frequency at the currently estimated resonance point
(peak), and then repeat from step 4 until a clear resonance point is obtained. Also
change the settings for parameters (B) through (G). The example below shows the
waveform measured after changing the settings.
Note: No matter how many times you change the settings, you might still be unable
to obtain an easy-to-see waveform depending on your machine. Even in that
case, there is no real problem as long as the resonance point (peak) is
measured.