Signal Types

NI-DAQmx 18.6 Help

Edition Date: January 2019
Part Number: 370466AH-01
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A signal is classified as analog or digital by the way it conveys information. A digital (or binary) signal has only two possible discrete levels—high level (on) or low level (off). An analog signal, on the other hand, contains information in the continuous variation of the signal with respect to time. A breakdown of the main signal types is shown in the following figure.


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