D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
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When you change horizontal sweep on a digital oscilloscope you can see the waveform changing of the same signal on different horizontal sweeps.
It’s important to take into consideration the fact that you work with a digital oscilloscope and it digitizes a signal with different sampling rate depending on the horizontal sweep chosen, and afterwards it connects the digitized points with a smooth line (interpolates them), restores the real signal waveform.