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image::https://es.technikum-wien.at/openlab/openlab_wiki/wikis/img/ETS_theory/ETS_MAIN.JPG[caption="Figure 3: ",title="ETS basic acquisition process (3)",height=300,align="center"]
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By accumulating the taken samples of the periodic waveform, the original signal can be reconstructed and displayed on the oscilloscope screen. The first sample is taken at time t.
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The next sample will be taken at the same time t but delayed by a constant value delta t. The upcoming sample will be taken at t + (2 * delta t) and so on.
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== Bibliography
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. TEKTRONIX: _Real-Time Versus Equivalent-Time Sampling._ [Online] http://www.tek.com/document/application-note/real-time-versus-equivalent-time-sampling[tek.com]
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