Analyzing wavef
orms
MSO5000B and DPO5000B Series
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 page 121, Gating.)
Quick tips
Source
s for spectral math waveforms must be channel or other math waveforms.
Use sho
rt record lengths for faster instrument response.
Use lo
ng record lengths to lower the noise relative to the signal and increase the frequency resolution.
Diffe
rent window functions produce different filter response shapes in the spectrum and result in different resolution
bandwidths. See the online help for more information.
The resolution bandwidth (RBW) directly controls the gate width. Therefore, the time domain gate markers move
as you adjust the control.
Yo u can display the linear magnitude of the real data or the imaginary data in the spectrum. This is useful if you process
the s
pectrum off line and transform it back into a time domain trace.
134 MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO 5000B Series U ser M anual