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

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tautech:
Some SDS1104X-E screenshots of the webserver from 1 of the 24" monitors on my PC for balnazzar to consider.

We can view in 3 modes and the blue X at bottom right takes the scope display to full screen whereas the blue bar top right of the display pops out or hides the virtual scope controls. PC display must be no greater that 100% scaling to fit both the display and controls within the width of the PC display.
In webserver mode you have both local and remote control of the scope.

PC Esc button exits full screen mode.

BTW, just viewing these now posted, they are filling ~2/3rd of the width on my monitor whereas they were screenshotted full width.

2N3055:

--- Quote from: balnazzar on October 04, 2022, 01:12:52 am ---
--- Quote from: Fungus on October 03, 2022, 09:48:13 pm ---The Micsig is way faster/easier to use, I don't regret the loss of a few "checkbox" features at all.

--- End quote ---

Tell me one thing: when you connect the Micsig with the hdmi, does it still do just 800x600? Thanks.

--- End quote ---
None of the embedded scopes will change resolution when outside monitor is connected.

balnazzar:

--- Quote from: tautech on October 04, 2022, 01:16:47 am ---Just be sure you've checked out the input limitations of an AD2 .....hardly anything like the 400V rated inputs on the X-E.
Instead investment in a SAG2021I for $165 will get you up and running with Bode plots immediately as no licensing is required unless you use the FG capability.

--- End quote ---

Mh, it's actually a good price. Apart from its 1.5-3V limit and slightly lower sampling rate, what are its limitations with respect, say, a SDG1000X? Thanks.

tautech:

--- Quote from: balnazzar on October 04, 2022, 08:38:34 am ---
--- Quote from: tautech on October 04, 2022, 01:16:47 am ---Just be sure you've checked out the input limitations of an AD2 .....hardly anything like the 400V rated inputs on the X-E.
Instead investment in a SAG2021I for $165 will get you up and running with Bode plots immediately as no licensing is required unless you use the FG capability.

--- End quote ---

Mh, it's actually a good price. Apart from its 1.5-3V limit and slightly lower sampling rate, what are its limitations with respect, say, a SDG1000X? Thanks.

--- End quote ---
Datasheet time !

SAG1021I>P13. These have the benefit of an isolated output, ie. not referenced to mains earth.
https://www.siglenteu.com//wp-content/uploads/dlm_uploads/2021/08/SDS1000X-E_DataSheet_EN04D.pdf

SDG1000X
https://www.siglenteu.com//wp-content/uploads/dlm_uploads/2022/06/SDG1000X_DataSheet_DS0201X_E01I.pdf

2N3055:

--- Quote from: Fungus on October 03, 2022, 11:29:44 pm ---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?

--- End quote ---

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).

--- End quote ---

And maybe not.
Like I said, you don't know. You don't own AD2 and have no knowledge or experience with measurement of Bode plots with it.  Your body of knowledge on this topic is "maybe" same as mine. And it is a 400 € device you recommend.

In an article I linked there were problems found with measurements on AD2. Basically, they wanted to use it for serious measurement and found that some of implemented measurements were a bit simplistic and not stable and reliable at higher frequencies. I have no idea if that is fixed or not but that made me think.

Plenty people are recommending AD2 but there is no real performance verification anywhere to be found.
As I don't own AD2 I asked for real data from someone who owns it or link to some real performance verification.
I'm not saying it is bad, I'm saying we don't know...

And yes, only 5V and 20V voltage range is a serious limitation. If you use it with 10x probes it becomes 50V and 200V range.
When you are trying to measure loop stability, voltages are sometimes minuscule (very small). Whole regulation loop is fighting to set error voltage to zero... That is why good sensitivity and best possible ADC is needed.

On Micisg: statistics on measurements is a basic thing. And I miss it all the time on the Micsig and am completely baffled why they didn't make it... Yes I do own STO1104C..

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