I came across this article about oscilloscopes. Under the figures and scope screenshots there is a term called "baseline noise".

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I googled but it turned out this baseline noise is used at different disciplines for different things.

Does "baseline noise" regarding a scope mean that the noise floor measured when the probe inputs are shorted? Or?

(English is not my mother tongue)


I would interpret baseline noise to be the RMS noise around the baseline, under what conditions we do not know. Baseline usually implies that the signal is around a 'relative' average value. Because the RMS measurement does not care about mean values, and only the noise is being measured, it doesn't matter what the offset in the system being measured.

I assume that the inputs would be shorted, because that would give the best results for a noise floor measurment.

  • \$\begingroup\$ That sounds like this is the limiting factor for the effective resolution. Is that correct? \$\endgroup\$ – panic attack Jul 18 at 19:44
  • \$\begingroup\$ Definitely, It is the inherent noise from the analog electronics of the scope. \$\endgroup\$ – Voltage Spike Jul 18 at 20:51

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