Oscilloscope Reference Math arbitrary filters
Frequency response of the available smoothing filters
The following table lists the available smoothing filters:
File name Len gth Normalized bandwidth
Stop band attenuation dB
smooth3.flt
3 0.1558 -9.4
smooth5.flt
5
0.0903 -12
smooth10.flt
10 0.0446 -12.9
smooth20.flt
20 0.0224 -13.2
smooth50.flt
50 0.00887 -13.2
smooth100.flt
100 0.0045 -13.2
smooth200.flt
200 0.0022 -13.2
xxx
Hi
lbert transform filter
The ideal Hilbert transform filter has a gain of one at all frequencies and shifts the phase of all frequencies
b
y90degrees. Thistypeoffilter is one of the types that may be specified in the Remez Exchange
algorithm. This filter departs from its desired behavior in the frequency range of 0 to 0 .025 times
the sample rate and also in the range of about 0.475 to 0.5 times the sample rate. This type of filter
can be used to create quadrature signals over a wide frequency range. The filename for this filter is
HilbertTransform90PhaseShift.flt.
862 DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series
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