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LCR Impedance Viewer for Picoscope+Keysight+R&S Bode Plot Data (open source)
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Hans Polak:
Wim,
I downloaded your nice calculation tool and it seems to work fine on the .csv file produced by FRA4Picoscope.
Problem however is that although FRA4Picoscope produces nice Bode plots, they show 1/A instead of input A, no idea why. Your tool obviously assumes an A and not an 1/A.

That's why I tried "Measure" in your program.
A nice screen appears with all relevant parameters to be entered, but when I press "start Measurement", I get a message "Unhandled Exception" and when  clicking continue nothing further happens.
I have installed SDK from Picoscope, but that makes no difference.
Do I still need some additional software on my machine ?
I have a 5243B PicoScope and my computer has Windows 10.

I enclosed as a .txt file the .CSV file for a bode plot of a 2200 Ohm Rsense between B and A and a 1mH +56 Ohm coil between A and Gnd plus what FRA4Picoscope made of it.

Hans


 


_Wim_:
Hi Hans,

If I see the plot from FRA4Picoscope, I think you got input and output channel mixed up , because your gain can never be bigger than 0db with a passive device and a series resistance (input channel = input to DUT; output= output from DUT, it gets me confused also quite regularly). My app does not case which channels were used, I only look at gain and phase in the CSV file.
As for my app crashing, normally there should be a log file in the execution directory. Can you post that one here? Did you close FRA4Picoscope while testing with my app (both cannot be run at the same time because both want access to the scope)?If FRA4Picoscope runs fine, you normally do not need to install anything else.

Hans Polak:
Hi Wim,

Thanks for your rapid reply.
You are right, changing the A and the B inputs returns the correct information.
I have now the DUT from input B to gnd and not from input A as in your instruction.
Thanks again,

Hans


Evodad:
Hi Wim,

I have used FRA4 quite a lot on and of since it was released. So yours is a really nice contribution to the tools for Picoscope,
expanding on the usability !

As for Hans in the Previous post I can't get the included measurement application to work. See attached file.
With FRA4 everything works just fine.

As for calibration and improvements. May I suggest to add checkboxes with a number for each loaded file.
(Or some other good way to do it)

* Unchecking will remove them from display
* Simple functions could take Trace 1 and subract from Trace 2 (where Trace 1 could be e.g a zero ohm refererence)
* You could save a combination of data as new data
* You could delete Trace X of not needed anymore etc
Keep up the good work !

)) Kind regards, Per

_Wim_:

--- Quote from: Evodad on April 20, 2019, 06:03:11 pm ---Hi Wim,

I have used FRA4 quite a lot on and of since it was released. So yours is a really nice contribution to the tools for Picoscope,
expanding on the usability !

As for Hans in the Previous post I can't get the included measurement application to work. See attached file.
With FRA4 everything works just fine.

As for calibration and improvements. May I suggest to add checkboxes with a number for each loaded file.
(Or some other good way to do it)

* Unchecking will remove them from display
* Simple functions could take Trace 1 and subract from Trace 2 (where Trace 1 could be e.g a zero ohm refererence)
* You could save a combination of data as new data
* You could delete Trace X of not needed anymore etc
Keep up the good work !

)) Kind regards, Per

--- End quote ---

Hi,

Could you post the "log4net.log" file from the execution directory. I hope this will give me some additional info.

Deleting a trace is possible already, just left click on legend item you want to remove.

As to the other improvements, some things were already planned, but I have been quite occupied with actual work lately, and lost a bit of momentum on this. This started out as a "quick and dirty" personal tool, and I should make some quite big structure changes to add things like you requested more easily.

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