Teledyne LeCroy SDA III-CompleteLinQ - Manual (Page 51)

Operator's Manual
NOTE: if the Noise Meas button is greyed out, then the oscilloscope has not been outfitted with XTALK
option code, which is enabled when purchasing SDAIII-Crosstalk, SDAIII-CrossLinQ or SDAIII-Com-
pleteLinQ.
This brings you to the top-level dialog for Noise Analysis.
This dialog includes buttons to access lower level dialogs to configure elements of the noise analysis, and
to enable/disable views of noise.
Noise Filter
You can optionally apply either a low-, high-, or band-pass filter to the RnBUn track data measured on
the signal under test (configured on the Signal Input dialog of the Serial Data configuration screens). The
filter is applied as an FFT. You can configure the low and high frequencies used, along with the slope of
the transitions in dB per octave determining the drop-off between the pass band and stop band(s).
Access the NoiseFilter dialog by touching the NoiseFilter button on the Noise dialog.
Filter State - Turns the Filter On or Off.
Filter Type - Use this control to choose Lowpass, Highpass, or Bandpass as desired.
dB per Octave - Use this control to specify the slope of the transition from the pass band to the stop
band.
Cutoff Freq (1) - Shown when any filter type is selected.
Cutoff Freq (2) - Shown only when the Bandpass Filter Type is chosen.
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