Products > Test Equipment
Rigol MSO5000 HiRes mode
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Mechatrommer:
ditto, if you want scope art.. super thin lines, its already there...
gitm:
First time caller. 

TL;DR -- Found 2 eeVblog threads on the MSO5000's base-line noise floor, often meandering and hard to coalesce into actionable info.  So, I collected measurements, made a table, and added screenshots of what I think is usable, YMMV.  Posting it here to make it easier for the next guy.  See attachements below, might be more than one post.


Did some research on the Rigol MSO5000 and decided to buy the MSO5204 with LA.  Then, while waiting for it to arrive, I stumbled on to the two threads specifically talking about this.   It gave me quite the angst until my scope showed up.  So, with that in mind, I ran a number of measurements in a manner similar to what I've seen in both this thread and another here about the MSO5000's noise floor. [[ you guys are a fiesty lot  :box: ]]

I'm going to build on bdunham7's post (https://www.eevblog.com/forum/testgear/how-much-noise-floor-and-other-things-matter-in-oscilloscope-usability/msg3894380/#msg3894380) that shows SDS1104-E X with no-probe noise and a 1mVrms sine wave screenshots.

First set of tests was to run [1x, no-probe, 1mV/div, 5us/div, BW=20MHz] into MSO5000 with and without 50 Ohm termination.  Sampling was done at 8G/400k and 2G/100k.  Std. Dev., Vpp, Vrms were collected after 1000 samples via the MSO5000's statistics.  The table is attached.   Comparing Std. Dev. to the SDS1104-E X, the noise on the MSO5000 is about 3x-4X more (no surprise) but my MSO5204 did not have any issues with triggering.

Second set of tests included sending a 1mVrms 100KHz sine and a 500uVrms 100KHz sine into 50 Ohm in-line termination sampling at 8G/400k and 2G/100K.  [[DG1022Z set to "HighZ" but 50 Ohm termination still in-line.]]
gitm:
Part 2.  1mVrms Sine, 8G/400k HIRES, PEAK, 2x AVG, Normal attached
gitm:
Part 3.  500uVrms Sine, 8G/400k HIRES, PEAK, 2x AVG, Normal attached.  Single shot as well.
gitm:
Part 4.  500uVrms Sine, 2G/100k HIRES, PEAK, 2x AVG, Normal attached.  Single shot as well.
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