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Article #851

Re: Rigol caught with their pants down! (DS1052E Oscilloscope)

#851
From: David L. Jones
Date: Sun, 19 Jul 2009 21:57
32 lines
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BobW wrote:
> "David L. Jones" <altzone@gmail.com> wrote in message
> news:9ZD8m.24080$Qg6.2130@newsfe14.iad...
>> As promised, an expos� of an issue with the Rigol DS1052E
>> oscilloscope in my latest video blog:
>> http://www.alternatezone.com/eevblog/
>>
>> Dave.
>
> Does this Rigol claim to do 1Gsps on non periodic signals?

Yes, that's always been its big selling point. 1GS/s real-time.

> If not
> (like other sampling scopes), perhaps they're just sliding the phase
> of the A-D's while still clocking them within their rated specs.

It also has a selectable equivalent time sampling mode (up to 10GS/s), but 
you have to specifically select this through a menu.
In this mode the 1Mpoint memory comes in at 100ns/div.

> Did you ever measure the clocks to the A-D chips?

No, I haven't open my unit. But bet your bottom dollar they are 100MHz, 
simply no other way to do it.

Dave.

-- 
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.alternatezone.com/eevblog/ 
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Date: Mon, 20 Jul 2009 07:57:46 +1000