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REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol

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poida_pie:
re: anti-aliasing having no effect.

I beg to differ. Try the FFT function, with and without AA.
It seems to limit something or other.
The attached images show a 1 MHz square wave, 1v p/p, on an unmodified DS2072. Signal from a Rigol DG1022, via 50 ohm termination.
Blackman windowing selected for the FFT.

Note how the FFT horizontal scale changes.
When AA off, lots of garbage about the main tones, and how when AA is on, the spectrum looks about right.

 

Teneyes:
To help show the bandwidth
Below are 2 displays for a 4-40 MHZ frequency Sweep (exp)
  1st display is Capture of multiple frames in 3D format
  2nd display is same as above but with the BW Limit set to 20 MHz
  3rd display is Animation of every 200th frame  with the BW Limit set to 20 MHz

Notes:
    the 1st frame is with 2 cycles on display, so scan was fine adjusted to 36nsec/div
    the DS2072 set to show -0.8 to +0.8 Vdc
    the RUU program shows  -1.0 to +1.0 Vdc

My Generator only goes to 60MHz so , I am asking if somone with 500 MHz Generator could repeat this test to show higher frenquencies and maybe with the 100 MHz filter

marmad:

--- Quote from: poida_pie on July 06, 2013, 07:52:52 am ---re: anti-aliasing having no effect.

I beg to differ. Try the FFT function, with and without AA.
It seems to limit something or other.

--- End quote ---

Great! It's good to know that it 'limits something or other'.  ;D  Seriously, this has been discussed ad nauseum - so, for hopefully the last time: anti-aliasing has (virtually) no effect on aliasing (as defined for a DSO) - which, judging by it's name, you might reasonably expect it to, you know, prevent.  :)

How to do it? It's not rocket science - over-sample, then randomly decimate for the 'required' sample speed = stochastic sampling. Done.

darrylp:
Have noticed from videos of people ds2xx2 that all earlier shipments come with switchable x1 x10 probes. Some people mention 350MHz bandwidth. Well my scope came with x10 non selectable , rigol info sheet says 300MHz bandwidth. Now I've got other probes for accessing the 500uV setting, but who else has the x10 only probes ?


--
 Darryl

jsykes:

--- Quote from: darrylp on July 06, 2013, 12:57:11 pm ---Have noticed from videos of people ds2xx2 that all earlier shipments come with switchable x1 x10 probes. Some people mention 350MHz bandwidth. Well my scope came with x10 non selectable , rigol info sheet says 300MHz bandwidth. Now I've got other probes for accessing the 500uV setting, but who else has the x10 only probes ?


--
 Darryl

--- End quote ---

 
My 2202 came with the x1-x10 switchable 350MHz probe model RP3300. What is the model # of yours?

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