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Spectrum analyzer as an oscilloscope

brandon7861

Loose Wire
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Nov 28, 2018
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Many digital oscilloscopes can act like spectrum analyzers using FFT, but today was the first time I used the SA as an oscilloscope. I have a remote controlled outlet and I am considering making another transmitter, so I wanted to know what the signals looked like. The remote is 315MHz, my scope BW is about 240MHz. Here is how that turned out.
20260101_015018.jpg

Remembering that my spectrum analyzer had a zero span feature (plots amplitude over time). That worked a lot better!
20260101_014636.jpg

That was the on signal for my desk light. The off signal is almost exactly the same, only one little difference at the end.
20260101_015251.jpg

Just thought that was neat and wanted to share. A terminated BNC-alligator clip cable as an antenna.
 

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