[sdiy] Pink?

[rburnett at richieburnett.co.uk]

> Can’t the square wave sag sometimes be due to scope measurement
> anomalies?

Usually due to it being passed through some sort of high-pass filter:

https://archive.cnx.org/contents/8b7e12c0-a0a2-4d06-ac90-11bbfd73b6cb@1/ae-lecture4-partd4-time-domain-response-of-high-pass-filter

...but poor scope probe compensation can cause an initial overshoot or 
undershoot after fast edges in waveforms that can look similar.

-Richie,


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