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In this simulation, the stop time was 20μs to cover both the transmitted and received signals adequately. On the other hand, the periods of the signals were on the order of 1ns. Therefor, a step ceiling of 50ps was chosen. From the above figure, you can see that the received signal starts at t = τ = 10μs. You can zoom in the graph to see the details of the transmitted and received signals. The figure below shows the results with a scale time axis limited to the interval [19.9899μs, 20μs]:
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[[File:SysTUT7 16.png|thumb|750px|The zoomed-in graph of the transmitted and received signals and the mixer output in the interval [19.9899μs, 20μs].]]
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