Creating and Using Math Waveforms
3- 204
CSA7000 Series, TDS7000 Series, & TDS6000 S eries Instruments User Manual
Using the time controls. The operation of the time domain controls for the
spectral analyzer is summarized by the following rules:
H Duration selects the time from the beginning to the end of the acquired
waveform. You may set duration using the record length control or the
sample rate control.
H Resolution determines the time between samples. Duration is kept constant
as resolution is changed. Therefore, the Resolution control affects both the
sample rate and the record length simultaneously.
H Most often, you will want to use a short record length because long record
lengths can slow instrument response. However, long record lengths lower
the noise relative to the signal and increase the frequency resolution for the
spectral math waveform. More important, they might be needed to capture
the waveform feature you want to include in the waveform.
Examples of how duration and resolution affect the acquired waveform are
shown in Figure 3--45.
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