Forum 2005-2010 (read only)
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May 02, 2009, 11:18 pm
As anyone have experiences with USB O-scopes like the one listed here? It seems to have some good reviews...
Location: "The old Europe"
May 03, 2009, 12:03 am
Analog bandwidth: 250kHz
I wouldn't pay more than 25? for that piece of crap. And you always need to run your computer to use it.
The oscilloscope sold at seeedstudio.com for 49$ is stand alone and has an analog bandwidth of 1MHz.
You can't even display the arduino's clock frequency properly with that one.
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May 03, 2009, 02:19 am
You have a good point. I missed that. I have been searching for so long for a small simple o-scope. I like it however I was just hoping for something that I could pump off onto the computer... unless I am missing something.
May 03, 2009, 03:33 am
nkcelectronics has some interesting scopes/analyzers:
What do you think about those?
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May 03, 2009, 05:59 am
the logic cube looks pretty cool, that is if digital logic analyzing is the main goal.
May 04, 2009, 05:53 am
Forget it. I used a BitScope USB-based scope for a while and it just doesn't cut it. A scope needs to be a standalone piece of test equipment, and is probably the most useful thing you'll ever buy so get the best one you can afford.
Don't bother with any scope of bandwidth <100MHz. You'll just be fooling yourself on most signals. I recommend the low-end Instek scopes (e.g., GDS-2102). It's ~$1100 if you shop around but it will last years, while a USB-based scope will just frustrate you.
Location: Seattle WA
May 06, 2009, 07:34 am
I got a very good piece of advice on the subject of scopes (and other sorts of test equipment) at my first lab job at college. There are three kinds: HP (now Agilent), Tektronix, and crap.
May 06, 2009, 07:39 am
There are three kinds: HP (now Agilent), Tektronix, and crap.
Well...there's LeCroy, Yokogawa, and maybe a couple others that aren't "crap". But Agilent, Tek, and the above are definitely a class above the (cheaper) off-brands like Instek.
May 12, 2009, 01:32 am
My opinion is biased, but Rigol has some very interesting scopes (50MHz 1GSa/s for $595, 100MHz 1GSa/s for $795 and so on). They manufacture the low end scopes for Agilent.
A logic analyzer can benefit from the larger PC or laptop screen, but I think a scope is much better in a standalone format.
May 13, 2009, 11:33 pm
I've been thinking about scopes as well.
I think I'm going to try out the owon 5022S. They are on ebay for $325 shipped. I hear the screen has a really narrow viewing angle - kinda bad. But at least it's a dual channel, and can do math/storage functions. I'm not expecting much for $325 - but it's either that, or an older scope that I might not trust so much.