I don't know about the cheap Chinese ones, but I have a Dynon Elab
http://www.dynoninstruments.com/index.php and I can very highly recommend
it.  I just looked at their web site and it is $495.  Pretty sure I paid
something like $895 a few years ago when I bought it and I thought it was a
very good deal at that price.  I see that they also have a new model without
the logic analyzer, signal generator, etc. built in and it is only $249.
Certainly worth taking a look at before buying a cheap Chinese one from an
unknown source.

I use the Elab exclusively now weather it is in my shop or traveling and
using it with my laptop.  One of these days when I get around to it I will
put all my dedicated scopes on Ebay.  They are completely useless to me now.

Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
Of Timothy J. Weber
Sent: Tuesday, May 22, 2007 9:48 AM
To: Microcontroller discussion list - Public.
Subject: Re: [EE] Chinese Digital O'scopes


Victor Fraenckel wrote:
> I have noticed quite a few USB Digital Oscilloscopes of Chinese origin
> being offered for sale on eBay. They sell in the 150 - 300 USD range.
> Are these puppies worth the price? Would like to hear from anyone that
> has experience with them.

I bought a cheap Chinese scope last year, though not on eBay - Owon
PDS5022S, 2-channel, 25 MHz, somewhere around $200 IIRC.  It's not the
first scope I've touched, but it's the only one I've worked with
extensively.  The color LCD has some blemishes and has a very narrow
viewing angle, the buttons and knobs are cheap and sometimes flaky, it
occasionally locks up, and its Windows applet is pretty basic.  But, it
does the job - I've had no problems with the electronics, and the
feature set seems good to me - and it was easily affordable.

So, my feeling is, they skimped on exactly the things I want them to
skimp on, for the price.  :)  I'm happy with it.
--
Timothy J. Weber
http://timothyweber.org
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