Sensitivity of the current probe and oscilloscope combination too low

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Andrew-88:
To sum up, original current probe output this is 10mV / 1A, and with this 50x coil this is now 500mV / 1A.

And or 50mV per 100mA of load.
And or 0,5mV per 1mA of load.

Your minimum load (at the other project) this is 135mA = 67.5mV at the oscilloscope channel input (with the new coil).
Your chances to succeed, they have increase, lets hope that now they did increase enough. ;)

It does makes you wonder of what is actual requirement for GDS-2000A regarding amplitude of input signal which is enough for it so to trigger on it?

Kiriakos GR:

--- Quote from: Andrew-88 on December 06, 2022, 03:53:41 PM ---It does makes you wonder of what is actual requirement for GDS-2000A regarding amplitude of input signal which is enough for it so to trigger on it?

--- End quote ---

This is the 1.000.000 dollars question for every oscilloscope, when it has active two input channels.

Thanks for the math analysis. :)

overvolt:
This last screenshot it must be with the digital filter on.
Did the trigger issue improve?

Kiriakos GR:

--- Quote from: overvolt on December 11, 2022, 02:25:37 PM ---This last screenshot it must be with the digital filter on.
Did the trigger issue improve?

--- End quote ---

Not as much as I was hope for.

But I did discover that others before me in Japan, they did face this identical challenge.
And there is now open one communication window with them.

Problem description:
The signal is obscured by noise, and the trigger cannot be
applied in a stable manner, so averaging is unable to function.

I did succeed to help the oscilloscope enough so the averaging this to start to work, before I could only use the digital filter.

Andrew-88:
While I do not own any digital oscilloscope yet, with so much added information, the problem and the solution its now more obvious.
The oscilloscope along both probe's for voltage & current, other than build quality they should be made by the use of low-noise electronics circuitry.

When three tools they must be combined for energy measurement (Real power), the weakest tool in this chain it will destroy the quality of the measurement.