Discussion
Which of the following can store, manipulate and retrieve waveform related information ?
Answer: D
The instrument is the DSO, the digital storage oscilloscope.
A DSO samples the input with an analog-to-digital converter and stores the samples in memory. The stored waveform can then be displayed, measured, processed (zoomed, averaged, transformed) and recalled or transferred to a computer later, even for a single event that does not repeat.
An analog CRO displays the waveform only while it is present and cannot store it. A DMM measures single values such as voltage and current, not waveforms. A spectrum analyser displays the frequency content of a signal rather than storing the waveform itself.
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