Teledyne LeCroy DFP2 - Digital Filter Package 2 - Manual (Page 6)

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ISSUED: June 2013 923134 Rev A
design or with a math package such as MATLAB or Mathcad. Filter coefficients can be directly
downloaded from the program into the scope, using the DSOFilter utility. It is also possible to
specify the filter coefficients on an Excel spreadsheet and to use DSOFilter to download them
from the spreadsheet to the scope.
DFP2's flexibility is shown by the following example:
1. A 25 kHz square wave combined
with an unwanted 60 Hz sinusoidal
component.
2. A high-pass filter set to attenuate
signals lower than 1 kHz is applied
to remove the unwanted 60 Hz
component.
3. FFT of the unfiltered trace.
4. FFT of the filtered trace. Note the
absence of the 60 Hz component.
Enhanced Solutions
DFP2 can be coupled with other
Teledyne LeCroy software products such as JTA2 or DDM2 to
enhance the capabilities of these products and to provide improved solutions. For Jitter
Measurement, for example, the DFP2 Band-pass Filter can be coupled with the JTA2 package to
measure jitter over a narrow frequency range.