Connecting the existing power supply to his oscilloscope, [Matthew] found the stock “steady on” setting was a 72 VAC peak-to-peak square wave at about 500 Hz.

Ordinarily, when we hear the words “clock” and “oscilloscope” in the same sentence we conjure images of measuring a stable, repeating square wave that acts as the heartbeat of a system. Of ...

Figure 2 shows a 3D display of a swept frequency square wave with color graded amplitude encoding. Figure 2. The color grading in this 3D spectrogram indicates amplitude. The spectrogram display is ...

By stopping an acquisition, I found that the “square wave” was actually a digital pulse train with several pulse widths and the triangle wave contained several different rise and fall times. These ...