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Old 11-25-2013, 04:40 AM #1
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Default Does anyone know if something like this would be a good Oscilloscope?

I saw this at goodluckbuy.com and wondered if anyone has used one like this and if there any good for laser projects?

ARM DSO DSO201 Portable Digital Storage Oscilloscope DIY Kit $62.30 Free Shipping @GoodLuckBuy.com

ARM Cortex M3 2.8 TFT LCD 1 Single-channel DSO301 Pocket Oscilloscope $80.57 Free Shipping @GoodLuckBuy.com


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Wavelength nm, color, type
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445 violetish blue diode laser
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473 turquoise-blue DPSS
488 main green-blue argon wavelength
532 green DPSS
543.5 green He-Ne
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Old 11-27-2013, 03:16 AM #2
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Default Re: Does anyone know if something like this would be a good Oscilloscope?

The user interface on a device that small is always terrible. As an example, would you enjoy using a calculator the size of a quarter?

1MHz is very low for a modern bandwidth. I've got a scope from the early 60s that is faster. There is no AC coupling. The input jacks will break within a few months of heavy use. Input impedance is half of what the standard is. I could go on.

Look on ebay. You can get a quality 20MHz dual channel scope for $50 second-hand.
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Old 11-27-2013, 04:11 AM #3
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Default Re: Does anyone know if something like this would be a good Oscilloscope?

I agree that input/probe connector just looks like it wants to go south really quick, I would invest in something more substantial unless you just have nothing better to do with your change

Like Cyparagon said look for something used on eBay that is guaranteed not to be DOA but cheap.

Good luck...
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Old 11-27-2013, 05:34 AM #4
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Default Re: Does anyone know if something like this would be a good Oscilloscope?

I am quite pleased with my Rigol.
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Old 11-27-2013, 09:38 AM #5
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Default Re: Does anyone know if something like this would be a good Oscilloscope?

First determine whether you really need the oscilloscope. I got one and thought I'd use it more, but it really isn't worth what I spent on it (Rigol) for the amount of time I use it. You might be better off spending it on a nice multimeter or soldering station.
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Old 11-30-2013, 01:54 PM #6
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Default Re: Does anyone know if something like this would be a good Oscilloscope?

Quote:
Originally Posted by Bionic-Badger View Post
First determine whether you really need the oscilloscope. I got one and thought I'd use it more, but it really isn't worth what I spent on it (Rigol) for the amount of time I use it. You might be better off spending it on a nice multimeter or soldering station.
very true, im not sure if I would even use one that often or even have a real use for it.
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Wavelength nm, color, type
--------------------------------------------------------------------
405 violet diode laser
441.6 He-Cd violetish blue
445 violetish blue diode laser
458 deep blue DPSS
473 turquoise-blue DPSS
488 main green-blue argon wavelength
532 green DPSS
543.5 green He-Ne
593.5 orange-yellow DPSS
594.1 orange-yellow He-Ne
612 red-orange He-Ne
632.8 red common He-Ne
635 less-common red diode laser
647.1 red krypton laser
650 common low cost red diode laser
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Old 12-02-2013, 09:43 AM #7
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Default Re: Does anyone know if something like this would be a good Oscilloscope?

Iīm having the DSO201 with a custom firmware. Itīs quite ok for low frequencies, measurements at a car or to check a audio amplifier but for lasers it could be used as a graphical LPM with a modified firmware.

The only benefit is, itīs quite handy and portable. So when you are often doing some measurements outdoors, itīs useful but at home you better go for a real scope.

Last edited by honeyx; 12-02-2013 at 09:47 AM.
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Old 04-22-2014, 03:38 AM #8
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Default Re: Does anyone know if something like this would be a good Oscilloscope?

Regarding the DSO301, also sold as DSO504
The signal display area is 299 X 199 and contrary to advertisements, the only captured signal is what fits in the window at time of capture.
The actual sampling rate is up to 20.8 MSa/S but the amplifier has a wide bandwidth so if your signal has components above 10 MHz you will have aliasing.
The maximum sensitivity is .1V/div but it is noisy, .2V/div is the practical limit.
The input resistance is around 540K so it won't work with probes that assume 1M.
If these limits are not a problem, it is a nice portable scope, or a system component.

After writing the above I discovered that for firmware V3.2 sweep rates below 100 ms/div (which is when you most need storage) gives highly distorted, probably overflow while averaging.

Last edited by robeyw; 05-03-2014 at 01:44 AM. Reason: found more information
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