阮锦浩的博客

Recently, I found a problem in using oscilloscope.

I wanted to detect a SPWM waveform but the display was always wrong.

At the beginning, I thought it was because of my code’s error. but no matter how I modified my code, the problem still exsited.

Finally, I found it was caused by the triggering mode of oscilloscope, it was set as rising edge mode as default.

So I switch the source to a square wave，the display became normal.

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