Spider DSA User’s Manual
324
Go to Setup->Measured Signals. The last column is filter selections. There are
FIR(Window), FIR(Remez), and IIR filters. Only one type of filter can be applied
at a time. In the same test, different channels can have different types of filters.
Filters are only applicable to time streams.
Figure 194. Measured Signal Setup – Filters
It is important to keep in mind that the cutoff frequencies are relative to the
sampling rate, when the sampling rate changes, the cutoff frequencies in absolute
Hz will be changed. For example, when the sampling rate is 1000 Hz, a 0.1 cutoff
frequency means 100 Hz. If the sampling rate is changed to 102.4 kHz, the cutoff
frequency will be moved to 1.024 kHz.
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