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Reference
3Ć148
Waveform Math
You can mathematically manipulate your waveforms. For example, you
might have a waveform clouded by background noise. You can obtain a
cleaner waveform by subtracting the background noise from your original
waveform.
This section describes the invert, add, subtract, divide, and multiply waveĆ
form math features. If your oscilloscope is equipped with Advanced DSP
Math (optional on TDS 620A & TDS 640A), see Fast Fourier Transforms on
page 3Ć36, Waveform Differentiation on page 3Ć139, and Waveform IntegraĆ
tion on page 3Ć143.
To perform waveform math, press the MORE button to bring up the More
menu (Figure 3Ć79). The More menu allows you to display, define, and
manipulate three math functions.
Figure 3Ć79:ăMore Menu
Math1, Math2, and Math3
1. Press MORE ➞ Math1, Math2,orMath3 (main) to select the waveform
that you want to display or change.
Operation