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Rev. 1.0
0012072012
TSM24P User Manual
+86-400-820-9661
5.8 Setting the Notch filter
The notch filter is used when there is a specific resonate frequency present in the system and
good performance requires that only the “bad” frequency be removed. Sometimes the resonate
frequency is low enough that it should only be removed using the notch filter. Using the standard
output filter or reducing the gain settings may compromise the system performance too much.
When performing the move profiles as discussed above, a significant resonate frequency may be
experienced visually on the plot window, audibly, or both. Finding this frequency can be a difficult
task and it is often discovered by experimentation. Change the frequency then perform sampling
moves until the resonance is reduced or removed. Keeping the bandwidth wide (maybe equal to
the center frequency) may help find the center frequency. When the center is found, the bandwidth
may be reduced until the resonance starts to return.
