Products > Test Equipment

Rigol MSO5000 HiRes mode

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gf:

--- Quote from: Fungus on October 30, 2022, 09:52:45 am ---Not every possible V/div setting, but not only at 1mV/div either.

--- End quote ---

Do you know what combination of attenuation and (re-)amplification is used at each V/div setting?
On many scopes the attenuator has only a few coarse steps, and all V/div steps in between need different amount of amplification, which implies different amount of noise. It really depends on the exact frontend architecture. You can only know for sure once you have tested them.


--- Quote ---The mathematics behind Hires mode are very simple, it's hard to imagine why it wouldn't work.

--- End quote ---

For white noise it is clear what to expect, but if the noise power happens to be already concentrated at low frequencies, then a lowpass filter won't help too much. You can only find out if you check the spectrum.

gf:

--- Quote from: Anding on October 30, 2022, 10:31:27 am ---single-shot mode, force trigger

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Can you enable standard deviation measurement, and add FFT?

Anding:
Various timebses, SD measure enabled







Anding:
FFT


gf:

--- Quote from: Anding on October 30, 2022, 10:56:50 am ---FFT

--- End quote ---

Unfortunately, the span is too small. At 8GSa/s, the full 0...4GHz range is of interest.

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