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Author Topic: O Scope recomendation  (Read 5713 times)
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Better to get a good used analog 50MHz or 100MHz 'scope than a crap USB 1MSPS 'scope. In general.

That said, I finally upgraded from my 20MHz dual trace expanded sweep analog 'scope to a 50MHz Rigol that will shortly get upgraded to 100MHz, at which point someone gave me a nonworking Tektronix 100MHz dual trace analog 'scope. I'm sure I'll find a use for it.
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I think I'm getting a Rigol DS2202, dual channel, 200 MHz, widescreen, I like some of the features.
Was considering an old (1995) TEX 4-channel 200 MHz for comparable $, $1600 range, or a 500 MHz 4 channel Agilent for $2700 - but I figure if I need that many channels I'm gonna be looking at a  bunch of digital stuff and will use Salea logic analyzer instead.
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If you're looking at the Rigol DS2000 series, the DS2072 can be upgraded to 200 MHz bandwidth using just a software key.  A web search for "rigol ds2000 hack" will bring up quite a bit of relevant information, and there's a long thread on eevblog.com on the subject.
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Well, I did it, ordered a 4-channel 200 MHz digital scope.
Might be overkill for Arduino work, but I certainly won't be under equipped.
http://www.tequipment.net/InstekGDS-2204A.html
Includes 4 probes. I like the ability to add modules later for functionality if, for example, my Saleae 8-channel logic analyzer proves ineffective with its 24 MHz sampling.
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Looks nice.  I just received my Rigol DS2072, and converted it to a fully-optioned DS2202.  Seems very nice, but it's my first scope, so what do I know?  The I2C and SPI trigger/decode seem like they could be very useful for Arduino work.  We're probably both rather far afield of what OP is looking for, though.
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I know skyjumper personally, and I don't think so.
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Quote
Oscope below 200MHz is wasting the money, imho..

You cannot give blanket opinions without considering the application.
It does not matter what your today's application is. An oscope purchase is for majority of people considered an investment, which shall last for many years. What would be your applications in 4 years look like?
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A web search for "rigol ds2000 hack" will bring up quite a bit of relevant information, and there's a long thread on eevblog.com on the subject.
...and rather than play hide the ball, here's the link to that thread:
http://www.eevblog.com/forum/testgear/sniffing-the-rigol's-internal-i2c-bus/

I've not personally tested the increased bandwidth or added features, but the scope's status page states they're active.  I can just confirm that the scope seems to work well for what little I've used it for so far.
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Looks like Rigol's just released (or about to release) the DS1000Z series, starting with the DS1074Z--4 channels, 70 MHz, and a package about the size of the DS1052E.  Screen is 7" dia., which is larger than the 1052 but smaller than the DS2000 series.  Starts at $585 US.  For another $200 or so, a 2-channel function generator can be built in.
Product page: http://www.rigolna.com/products/digital-oscilloscopes/ds1000Z/ds1074z/
Video overview:

It sounds like it doesn't have all the features available that the DS2000 series does, but the function generator could tip the scales a bit (as could the extra 2 channels).  I wouldn't be surprised if it were hacked in fairly short order as well, but that's another matter...
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