Set up the evaluation kit

nRF21540 EK Hardware

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
Preparing the nRF21540 EK for current measurements: remove R3