Creating and Using Math Waveforms
3- 180
TDS5000 Series User Manual
Overview Control elements and resourcesTo define a spectral math waveform
Select the
window type
18. To select the window type,click Window Type and select
from the list. A discussion of the FFT window types
begins on page 3--160.
Set the
frequency
domain
controls
19. To set the frequency range over which the spectral
analysis is performed, click Freq Span and use the
multipurpose knobs or pop-up keypad to set the
frequency range.
Higher sample rates allow you to set greater frequency
spans. To set the frequency span to the maximum
allowed by the current sample rate, click Full.
20. To set the center frequency of the spectral analysis, click
Center Freq and use the multipurpose knobs or pop-up
keypad to set the center frequency.
21. Resolution bandwidth determines how small of a
frequency difference can be resolved in the frequency
domain output data. It basically defines the bandwidth of
the filters used to do the frequency dom ain analysis.
To set the resolution bandwidth, touch Res BW, and use
the multipurpose knobs or keypad to set the resolution
bandwidth.