About Tektronix oscilloscopes Using waveform math
Using waveform math
Waveform math in the instrument can be as simple as basic arithmetic or as powerful as building a
complicated math expression.
Equation editor
You can buil
d a complicated math waveform expression us ing multiple waveform sources, constants,
variables, operators, and functions. The waveform sources can be any channel, reference, or math
waveform.
You can enter c onstants with a keypad. Live results from the measurement system can be used as variables,
and there is a full assortment of arithmetic operators and math functions to use. As you enter the waveform
expression, you will see it appear as an equation in the control window.
You can d e fine up to four separate math waveforms.
Using spectral analysis
When you are displaying an FFT (spectral) math waveform, you can use either of these two ways to
operate the instrument:
Use the conventional time-domain instrument controls, such as vertical and horizontal position and
scale.
Use the spectrum analyzer controls, such as center frequency, span, resolution bandwidth, and
reference level.
When you use the Basic Spectrum Analyzer controls, the instrument automatically sets its time domain
parameters, including record length and sample rate, as necessary to give you the view of the spectral
waveform that you want to see. You can switch back to using the conventional time-domain controls
at any time.
Spectral waveforms can be simple magnitude or phase waveforms calculated from the data acquired on
a single channel. Or you can combine spectral operations with other math operations to do complex
analysis of your signals.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 51
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