ppk2 incorrect readings ?

[Michal]

Hi,

I am using ppk2 to measure current on a custom board based on particle bsom (nrf52840). I am running ampere meter mode and I can measure some current, but values looks somewhat incorrect. Values are too small and also the graph looks like if there was a condensator discharging. I am pretty sure I connected ppk2 correctly since I can see that device operates as expected.

I attach 1 minute window screenshot 

Best regards,
Michal

[Simonr]

Hi Michal

This does not seem correct indeed. Can you show how you have connected the PPK to your custom board? When in Ampere meter mode it should be connected as "part of" the circuit you're measuring the current draw of. Can you also share some info on what voltage you power this circuit with?

Best regards,

Simon