Abstract
Rectangular, steplike waveforms, occurring in many physical systems, are passed through sensors or signal conditioners having, in many cases, low-pass filter characteristics. The filtered waveforms are sampled by A/D (analog/digital) converters and the average or RMS (root-mean-square) values calculated. The author describes the effects of the low-pass filter characteristics on the average and RMS values of the waveforms and the analysis method used to determine the effects. It is shown that once the data-acquisition-system component under consideration has been modeled by an s-domain transfer function and the input waveform is known, the solution process is mechanical. By the way of example, the method is applied to a measurement problem and the results provided. The effects of assuming unit step excitation rather than physically realizable exponential step inputs are also discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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