To measure current, you must first prepare the Evaluation Kit (EK).
The suggested configurations split the power domains for the nRF21540 FEM and the
rest of the EK.
- To enable current measurement, remove R3.
- To restore normal kit function after measurement, solder a 0 Ω resistor on R3 or apply a jumper between pin 1 and 2 on P5.
Figure 1. Set up the EK for current
measurements