1. Select Math > Advanced Spectral....
2. Select the math waveform that you want
to define.
3. Click the type of spectral waveform that
you want to create. To redefine a
waveform, click Clear.
4. Select the source waveform.
5. Adjust the spectral waveform, using the
controls in the Spectral Setup control
window or use the multipurpose knobs on
the Auxiliary Front Panel.
6. View time-domain and frequency-domain
waveforms simultaneously.
Use Gating to select only a part of the
time-domain waveform for spectral
analysis. See Gating on page 134.
Quick tips
■
Sources for spectral math waveforms must be channel or other math waveforms.
■
Use short record lengths for faster instrument response.
■
Use long record lengths to lower the noise relative to the signal and increase the frequency resolution.
Analyzing waveforms
146 DPO70000SX Series User
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