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Manipulating Waveforms
Operation
322
Then select a formula from the side menu (Ch1 + Ch2, Ch1 - Ch2, Ch2-
Ch1,or CH1 * Ch2). Figure 310 shows a square wave on Channel 2 added
toa sine wave on Channel 1.
Figure 310:A Math Waveform
TDS 300 Series oscilloscopes have two reference waveforms. You can use
the reference waveforms to store live" waveforms (channel and math wave
forms). You can also shift a stored waveform from one reference waveform to
the other.
Reference waveforms respond just like live waveforms to changes in vertical
position and scale, but they do not respond to horizontal scale adjustments.
There is no way to horizontally expand a reference waveform.
To save a live waveform to a reference waveform, press one of the reference
waveform buttons (REF 1 or REF 2) shown in Figure 311.
Saving and Recalling
Waveforms
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