This is correct, I'm not quite sure what I was thinking. I just bought a Rigol with a 50MHz bandwidth but 1Gs/S. They are completely different specifications and do not mean the same thing.I believe that scopes usually have a greater sampling rate (measures in Megasamples per second) than the bandwidth that is quoted in MHz.
A 100 MHz scope will have an input amplifier capable of handling 100MHz sine wave with minimal distortion.
If you want to view that 100MHz sine wave, then you will need a sampling rate much higher than the input bandwidth to give a reasonably accurate display. If the sampling rate were 100M Sa/s, then you only sample and display once per input cycle. It is pure luck where on the sine wave your sample comes.
My cheap scope has 70MHz bandwidth, but 250M Sa/s.
These are two different specifications and both are important
Sorry to nit-pick, but are you sure?Ms/S still means "meg-samples per second", though.
I was trying to remember which "s" was used for seconds vs. samples. I think you're right, samples should be "S" and seconds should be "s", in which case that would be MS/s. And actually, I'm beginning to think they often include a small "a" after the S, so it would be MSa/s. That looks more realistic to me....Sorry to nit-pick, but are you sure?
Shouldn't there be a little s for seconds?
I will not argue over case for "samples" though, since this is not exactly an SI abbreviation.