Analyzing Wavef
orms
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.
Different 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.
You can display the linear magnitude of the real data or the imaginary data in the spectrum. This is useful if y ou process
the spectrum off line and transform it back into a time domain trace.
Using M
ask Testing
Serial Communications Mask Testing (Option MTM) allows you to compare your signal to a predefined template or mask. For
the signal to pass the test, it must fall outside the segments defined by the mask. Generally, standards committees such as
ANSI define the masks. To perform mask testing do the following:
1. Select Masks > Source....
2. Select the signal source.
3. Click the Masks tab.
64 DPO7000 Series Q uick Start User Manual
To Next Page
Loading...
