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Buying a cheap, entry-level DSO


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#1 smadge1

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Posted 18 October 2016 - 12:42 PM

I'd like to look at buying a cheap DSO, not too crap, but suitable for getting a feel for them

Jaycar sell a 25MHz one for $670, is this a good price for a cheap DSO.

I want a reasonable one, doesn't need all the bells and whistles, but needs to be reasonably useable.

What are people using?

I mostly want it to experiment with digital and analog circuits, and analyse various digital signals.
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#2 slayme1974

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Posted 18 October 2016 - 12:57 PM

bit a of noob question but what is a DSO?



#3 Rybags

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Posted 18 October 2016 - 01:27 PM

Digital storage oscilloscope.

 

I've had a little look in the past (I have a CRO).  25 MHz to me sounds a bit slow.

One possible option is the USB types, they'll often run at around USB 2 speed though mightn't have enough channels for your needs, plus of course the inconvenience of having to accompany it with a laptop.

 

I don't know how far things have progressed, what would be nice is one that you could use with a phone.  Or maybe as components to RasPi, Adruinno and the like.

 

Here's a $209 self-contained one on eBay though it''s only 8 MHz and BYO case... http://www.ebay.com....24AAOSwZ8ZW87sA



#4 SquallStrife

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Posted 18 October 2016 - 02:17 PM

I'd like to look at buying a cheap DSO, not too crap, but suitable for getting a feel for them

Jaycar sell a 25MHz one for $670, is this a good price for a cheap DSO.

I want a reasonable one, doesn't need all the bells and whistles, but needs to be reasonably useable.

What are people using?

I mostly want it to experiment with digital and analog circuits, and analyse various digital signals.


That Jaycar one is hideously expensive for what it offers.

Look at the Rigol DS1000E and DS1000Z series scopes. http://www.emona.com.au/rigol.html

They can be had even cheaper than this if you're willing to wait for shipping from Hong Kong or China.

From the above seller, and for $100 less than the price of the unknown brand 2Ch 25MHz scope from Jaycar, you could get a 4 channel 50MHz Rigol DS1054Z (which can be software-unlocked to 100MHz).

If you want to save some cash, a new or used 50MHz DS1052E (software-unlocked to 100MHz) is a good bet, and happens to be the model I own myself. $469 brand new from above site, or cheaper on eBay from people who had this as their first 'scope and later upgraded.

Edited by SquallStrife, 18 October 2016 - 02:18 PM.

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#5 Rybags

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Posted 18 October 2016 - 02:32 PM

Yep, Jaycar aren't quite the quality and VFM place that initial impressions give.  With a CRO you have no choice, IMO it's madness to trust mail or courier to deliver a CRT device without in some way destroying it in transit.  But for smaller compact LCD devices, much less risk and worth the wait.



#6 smadge1

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Posted 19 October 2016 - 08:33 AM

I didn't really want a USB type one, as I didn't want to have to rely on and/or lug a PC around just to use it.

 

I had purchased and built a SainSmart DSO138 kit, which was a great exercise, but I still have no idea how to use it to measure things, I've only used it to visualise signals.

http://www.sainsmart...msps-probe.html


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#7 Jeruselem

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Posted 19 October 2016 - 09:12 AM

Someone here at Atomic has one of those, but I forgot who.


Cortana at your service


#8 smadge1

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Posted 22 October 2016 - 02:18 PM

What you guys think of this one? http://www.hantek.co...tDetail_96.html A Chinese branded Hantek DSO5102P, 100MHz, 2-ch.
And really, if the price difference isn't that much, would I be better off with the 200MHz version, DSO5202P?
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#9 Rybags

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Posted 22 October 2016 - 03:11 PM

Under half the price (eBay) of the Digitech from Jaycar and more capable.

The one I have is Digitech, it's one of the main brands they have, really it's barely medium quality Chinese stuff so comparitively I think you'd be well better off with that one.

So long as 2 channels will serve your needs.

 

And don't forget Logic Analysers, if it's just going to be computer gear you're looking at there are times when they'd be better suited to the job.



#10 smadge1

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Posted 22 October 2016 - 03:44 PM

Well yeah, microcontrollers and the various things you can attach to them.
Seems they sell a logic analyser for about $720 MSO5202D, so outta my price range for now, but in the future maybe.
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#11 smadge1

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Posted 23 October 2016 - 12:03 PM

This guy seems impressed with the hantek https://youtu.be/tMnCISpXV8U
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#12 SquallStrife

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Posted 24 October 2016 - 10:41 AM

Well yeah, microcontrollers and the various things you can attach to them.


For this, I keep one of the cheap-o Saleae clones in my toolbox. Granted it's "only" 24MHz, but it's 8-channel, essentially unlimited memory depth, and Saleae's software is incredible.

Literally a few dollars delivered from China.
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