Waveform analysis
R&S
®
RTE
295User Manual 1326.1032.02 ─ 20
7.3 Mathematics
Math waveforms are calculated waveforms. You can define up to eight math wave-
forms and display them on the screen, and use it as source for further analysis.
Math waveforms are defined by mathematical expressions (formulas). You can enter
mathematical expressions using different methods:
●
""Basic"" tab: you define a simple math function in a graphical editor by selecting
the source waveforms and the operator.
●
""Advanced"" tab: you define sophisticated math functions in a formula editor, as
required to your needs.
The result of an FFT analysis is a specific math waveform. For information on FFT and
spectrograms, see Chapter 9, "Spectrum analysis", on page 398.
The vertical scale of a math waveform is adapted automatically to the measurement
results to ensure optimal display. Furthermore, you can scale each math waveform
manually in vertical direction like a channel waveform.
As for channel waveforms, you can also change the arithmetic mode for the waveform
to display the envelope or an average over several calculations.
You can store a math waveform as a reference waveform and restore it later, see "To
save a reference waveform" on page 291.
● Displaying math waveforms.................................................................................. 295
● Math setup - general settings................................................................................296
● Basic editor........................................................................................................... 299
● Advanced.............................................................................................................. 301
● Filters.................................................................................................................... 309
7.3.1 Displaying math waveforms
Math waveforms can be displayed in addition to the channel and other waveforms.
They also can be used for analysis, e.g. measurements, even if the math waveform is
not active.
1. In the "Math" menu, select "Math Setup".
Alternatively, press the [MATH] key.
2. Define the math expression for calculation in one of the following ways:
● Chapter 7.3.3.2, "Defining a formula in the Basic editor", on page 300
● Chapter 7.3.4, "Advanced", on page 301
● Chapter 9.1.2, "Configuring spectrum waveforms", on page 402
3. In the "Math Setup" dialog box, in the "Setup" tab, tap the "Enable math signal".
The math waveform is displayed on the screen.
4. To change the vertical scaling of the math waveform, tap the "Manual" icon.
Mathematics
To Next Page
Loading...
