Products > Test Equipment
REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol
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CodyShaw:

--- Quote from: EEVblog on July 17, 2013, 08:08:00 am ---
--- Quote from: ve7xen on July 17, 2013, 03:38:54 am ---A wiki is a good solution for this kind of thing.
I don't have time to maintain one, which tends to be everyone's problem with this kind of thing, but if someone wants to step up and manage the content I am willing to host one.

--- End quote ---

It could go on the EEVblgo wiki, but of course someone needs to maintain it and organise it which is a massive job to do it properly with different pages for all the issues and content that interest people.

--- End quote ---

This is a great idea for the site, and for anyone interested in making the DS2000 community a better place. We would be able to keep the forum to resolving issues rather than documenting.
marmad:

--- Quote from: Carrington on July 17, 2013, 02:52:00 pm ---Yes is possible, and therefore the gds-2000a series uses a [[500Ms ADC x2] x2] to reach about 100,000 wfm/s. But I do not understand why the Rigol DS2000 not keep the 50,000 wfm/s for time base < 20ns.

This could be improved via firmware?

--- End quote ---

You don't have your facts straight: the GDS-2000A only does it's 80k wfrm/s maximum with a 200MSa/s rate - 10 times lower than the 2GSa/s maximum - so 10 times lower the BW. In fact, at 2GSa/s, with it's small 1k sample size, the 2000A is not significantly faster than the Agilent or Rigol (it does a max. ~55k) - and likely slower when using the 1M sample size (no one has done tests yet).

Also, the GDS-2000A series update rate drops dramatically < 50ns - much more than the Rigol.
Carrington:

--- Quote from: marmad on July 17, 2013, 09:27:34 pm ---
You don't have your facts straight: the GDS-2000A only does it's 80k wfrm/s maximum with a 200MSa/s rate - 10 times lower than the 2GSa/s maximum - so 10 times lower the BW. In fact, at 2GSa/s, with it's small 1k sample size, the 2000A is not significantly faster than the Agilent or Rigol (slower at many settings) - and likely slower when using the 1M sample size (no one has done tests yet).

Also, the GDS-2000A series update rate drops dramatically < 50ns - much more than the Rigol.

--- End quote ---

Wow mate! I believe you.  :)
I rely on this table:

http://www.ittsb.eu/GDS-2102A%20Wfms%20measurments.html

And: Let me be clear, I am delighted with the DS2072.
marmad:

--- Quote from: Carrington on July 17, 2013, 09:41:22 pm ---I rely on this table:

--- End quote ---

That upper table is nonsense - Kiriakos didn't use the correct measuring equipment for measuring < 50ns - he claims the DSO is much faster than even Instek claims it is.  ;D

You can see the real wfrm/s @ <50ns in Grego's video when he uses a Picoscope to measure the frequency.

Here is a table comparing the update rates and sample rates of the Rigol (w/14k) and the Instek (w/1k). I'd love to see someone measure the Instek's rate when it's using 1M sample length - I think the Rigol would beat it with 1.4M:

Carrington:
Thanks for the information marmad. Spectacular the fall for t <50ns.

Could you please explain to me why 50,000 wfs are only reached at 20 ns and it decrease to lower base time?  It brings me head  ^-^
Could be the Wfrm/s improved via firmware?
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