2
\$\begingroup\$

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

enter image description here

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)

|improve this question
\$\endgroup\$
1
\$\begingroup\$

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.

|improve this answer
\$\endgroup\$
  • \$\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

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.