How to measure current with an external power supply on nRF52840?

[SimonJ]

Hi,

I have a nRF52840 DK that I want to measure sleep current on, but I find it a bit confusing with all the switches etc. After reading through the documentation I have the following setup:

SW10: ON
SW6: nRF ONLY
SW9: VDD
P21: Power analyzer

But what about SW8? And should a usb cable be connected to J2 to prevent leakage current from nRF to the debugger? Is it possible to use the LEDs in this configuration?

Thank you!

[awneil]

Probably easiest to look at the schematics to see what's actually happening ...

[SimonJ]

I've tried, but there are too many supply rails to keep track of them all. 

[natersoz]

Correct! The schematic is very difficult - if not impossible - to understand how the pages connect together as well.