The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

Charlie — Tue, 08 Apr 2025 06:32:26 GMT

This is just internal feedback for our documentation team. We do not guarantee it will be included in the PPK2 document.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

jooyeol — Tue, 08 Apr 2025 05:03:45 GMT

Please share the document

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

Charlie — Wed, 02 Apr 2025 10:17:55 GMT

Good to hear! Thanks PaKa for sharing the correct method.

I will provide a feedback to our document team to add a general guideline for Ampere meter mode.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

jooyeol — Wed, 02 Apr 2025 08:42:52 GMT

I did as you guided. then I can measure value is almost same with Fluke. Thanks!

Where in the user guide is this explained?

When I checked at below page. I couldn`t find guide on circuit connections when measuring ampere mode on a custom board

https://docs.nordicsemi.com/bundle/ug_ppk2/page/UG/ppk/PPK_user_guide_Intro.html

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

PaKa — Wed, 02 Apr 2025 07:00:00 GMT

This will not work. Read through the user guide for the PPK2, this shows all ways to connect loads that will work and don't try other options as they are not supported.

You need to connect the Power Supply to VIN and GND and then you connect the 1M resistor from VOUT to GND if you want to test the current through the resistor..

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

Charlie — Wed, 02 Apr 2025 06:50:24 GMT

I think PPK2 GND should share the same GND with Power Supply. Could you try connect their GND?

Best regards,

Charlie

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

jooyeol — Tue, 01 Apr 2025 23:50:45 GMT

This is correct picture below

and then I selected Ampere meter. not Source meter.

I already checked Source meter`s Accuracy has no problem.

and I don`t have second unit.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

Charlie — Tue, 01 Apr 2025 07:37:30 GMT

Hi Jooyeol,

Thanks for sharing the information.

I'm not sure if this is related to the connection or Power Profiler configuration. Could you verify using the following connection and configuration:

Another possibility is that the PPK2 itself has an issue. If possible, could you try with a second unit to confirm?

Best regards,
Charlie

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

jooyeol — Tue, 01 Apr 2025 02:10:55 GMT

I can`t take picture so I attached the circuit diagram I tested.

in this case, Fluke287 consistently checked 37uA but PPK2 checked about 3uA.

so... I tried another simple test.

When I use 1Mohm, Fluke checked 1uA that is correct.

but PPK2 checked 500nA ~ 800nA shaked that is incorrect.

When I use 1kohm, Fluke checked 1mA that is correct.

but PPK2 checked 25uA. it`s too low.

is there something wrong with the software setting? All the settings in the PPK2 software are default

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

Charlie — Mon, 31 Mar 2025 10:22:47 GMT

Hi Jooyeol,

Can you show a picture of your setup?

Best regards,

Charlie

The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values ​​of the Fluke equipment and the PPK2 are very different.

The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.

RE: The current measurement values of the Fluke equipment and the PPK2 are very different.