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Topic: Oscilloscope/Function Generator Recommendations (Read 4 times) previous topic - next topic

fkeel

Oct 14, 2012, 08:23 pm Last Edit: Oct 14, 2012, 08:27 pm by fkeel Reason: 1
Hi Everyone

I am planning on purchasing a Function Generator and an Oscilloscope and I have no idea what I should be looking out for. As there is quite a price range I would be interested in some recommendations on products you like.

I mainly want to use them for prototyping and testing some wireless power transfer systems I am playing around with.

Any suggestions?

Thanks

p.

EDIT: I guess I prefer simplicity over 100 extras which I probably will never use.
I would also just appreciate some suggestions on what to look out for or what to avoid.

Jantje

Hi
I wanted a simple cheap Oscilloscope. I was advices to buy a DSO Nano. And I'm really pleased with it.  DSO Nano has a Function generator. Which I already killed by plugging 24 volt in the generator instead of the sensor. I bought version 1 but I guess version 2 is just as good.
As non being used to Oscilloscopes the scan function (just show the values) is my favorite. But automatic mode (shows the repeating signal) is great to.


Best regards
Jantje

PS note that Adafruit sells them which is a reference to me.
Do not PM me a question unless you are prepared to pay for consultancy.
Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -

AWOL

#2
Oct 14, 2012, 08:45 pm Last Edit: Oct 14, 2012, 09:02 pm by AWOL Reason: 1
I have a scope (a Rigol), but haven't used a function generator for years.
I'd spend a little more on the scope, and forget the generator.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

fkeel

#3
Oct 14, 2012, 08:59 pm Last Edit: Oct 14, 2012, 09:12 pm by fkeel Reason: 1
Hi Jantje

I also was looking at that one - but it somehow almost looks like a toy, which makes me skeptical. I sort of like the bigger one they have:
http://adafruit.com/products/681

Though I don't know enough to really justify buying the bigger one. I just really rather invest more up front than ending up buying things double.

*

I explicitly (think I) need an oscilloscope, for testing different frequencies for wireless power transfer. A cheap unit I was looking at is this one: http://www.accudiy.com/index.php?main_page=product_info&cPath=1_17&products_id=183 but again I am afraid of buying a toy ...

*

I'll google Rigol, thanks for sharing what you work with :-)
EDIT: Nevermind. the DS1052E is by Rigol :-D

p.


EDIT 2: I am considering simply getting 2 DSO Nano's - Does anyone else have any opinion on them? Is anyone using them as a function generator?

JoeN

#4
Oct 14, 2012, 10:17 pm Last Edit: Oct 14, 2012, 10:40 pm by JoeN Reason: 1
In terms of bang-for-buck you cannot beat Rigol right now:

http://www.saelig.com/product/PSPC017.htm  ** The oscilloscope you linked is the 50Mhz version of this scope.  Get the 100Mhz one! **
http://www.saelig.com/FGDG/FGDG007.htm

But you may not want a function generator at all.  BTW, the top frequency for the generator you linked is 200Khz for sine wave and 10Khz for the other.  That is very low.  There are some very cheap kits, many already built, just no enclosure so they are kit-like, to do various waveforms on eBay.  These kits are not as good as the Rigol above and nowhere as friendly, but you can get the signals you need out of them.  Some examples:

http://www.ebay.com/itm/AD9850-DDS-Signal-Generator-Module-0-30MHz-Sine-Square-Wave-Frequency-AD9851-/330621540938
http://www.ebay.com/itm/50MHz-Sine-Wave-5Mhz-Square-Wave-DDS-Signal-Generator-with-Sweep-Function-NEW-/320897517771
http://www.ebay.com/itm/Wave-Signal-Generator-Module-PWM-Sine-Wave-Square-Triangle-Saw-tooth-etc-300kHz-/330760676635

On the specs page for the DSO nano I see that the ADC they are using is 1 MSPS.  The cheap Rigol, for example, is 1000 MSPS.  All I can say is that the DSO doesn't look all that appropriate for high-speed circuits (it tops out at 1Mhz and does that on 1 MSPS which is cheating).  It seems more suited towards audio gear.

http://www.seeedstudio.com/wiki/DSO_Nano_v2#Specifications
I have only come here seeking knowledge. Things they would not teach me of in college.

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