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MSO5000 Bode Plot Capability: Is it Good Enough? [Many tips about a 1st scope]

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tautech:

--- Quote from: Fungus on October 03, 2022, 10:22:47 pm ---I was thinking more that OP wanted Bode Plots and had mentioned wanting to do it on his 27" PC monitor.

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Which he could do with a $499 DSO and webserver connection using his already acquired AWG, a Uni-T IIRC however I'm not 100% is anyone has scripted a Uni-T yet to talk to Siglent Bode plot control.
A $360 SDG1032X would fix that and still beat a MSO5k budget.

nctnico:

--- Quote from: Fungus on October 03, 2022, 09:48:13 pm ---
--- Quote from: 2N3055 on October 03, 2022, 09:37:37 pm ---Micsig scopes don't even have statistics in basic measurements. Or segmented capture in their lower priced models.

--- End quote ---

Maybe not everybody needs it. I can't say I've missed having it since I traded in my Rigol. :-//

--- End quote ---
Agreed. I rather have good decoding and deep memory always on instead of segmented recording and statistics.

Edit: as has been written before: in the lower end there will be comprises to be made; there is no perfect scope that does all.

Fungus:
Re: The AD2.

Just to be 100% clear: The AD2 is NOT a great oscilloscope, it will never replace a bench oscilloscope.

What it IS is a general purpose electronics tool, it does all sorts of clever/useful things.

It might help to think of it as a "Swiss Army Knife" - they're not the greatest knife in the world but they have all sorts of other tools like screwdrivers and scissors and saws.

Check out all the modules here:

https://digilent.com/shop/software/digilent-waveforms/

Edit: It looks like they forgot the curve tracer...


--- Quote from: 2N3055 on October 03, 2022, 09:37:37 pm ---What is actual performance of it performing stability analysis on a switcher PSU? Dynamic range and complete amplitude range? How well it performs in presence of noise?
I searched and found no real performance figures in real world scenarios ..what is real performance of AD2?

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That's completely the wrong way to think about the AD2.


--- Quote from: 2N3055 on October 03, 2022, 09:37:37 pm ---I know it has Bode plot functionality but despite it's nominal 14bit resolution, it has only 2 measurement ranges.

--- End quote ---

Yep. 5V and 20V ranges.

If you're doing Bode Plots at 100mV (or above) then it'll work just fine.

(maybe even at 50mV).

balnazzar:

--- Quote from: Fungus on October 03, 2022, 08:44:04 pm ---
nb. You don't get any more pixels. It's just the 'scope's screen scaled to a window.


--- End quote ---

I suspected that. It can still be useful, but I was aiming for a glorious 4K, 27" representation of my signals.


--- Quote from: Fungus on October 03, 2022, 08:44:04 pm ---
With a USB 'scope (or Analog Discovery) you actually get more information on screen when you make the window bigger.

HDMI capture for a PC can be had very cheaply. https://www.aliexpress.com/wholesale?SearchText=hdmi+capture+usb

I'm not sure I'd give up a touch screen interface on the 'scope just to have remote access from a PC.

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Would you recommend some usb scopes with good software?
I know that the AD2 is good for the price, but it's just 30 Mhz. Which, with the 5X, means that you get to observe signals, accurately, up to just 6 MHz.
The Picoscopes are expensive as hell (I could get the 70 MHz maximum, at ~850 eur) , and the software doesn't appear to be so great.

Thanks for the tip about hdmi capture, I didn't know that!

balnazzar:

--- Quote from: Fungus on October 03, 2022, 08:46:29 pm ---Edit: You can download the Analog Discovery software and use the "analog" part for free with your PC sound card. It does oscilloscope, spectrum analysis, bode plots...

--- End quote ---

But up to what? 44 KHz?

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