The average current drawn by the nRF52840 System on Chip (SoC) can be measured using an ampere meter. This method monitors the current in series with the nRF device. A true Root Mean Square (RMS) ampere meter is recommended.
- Prepare the Development Kit (DK) as described in Set up the DK.
- Connect an ampere meter between the pins of connector P22 as shown in the following figure.
- Set the average timing of the ampere meter to a long interval, such as 1 s or longer.
- Set the dynamic range of the ampere meter between 1 μA and 15 mA so that it is wide enough to provide accurate measurements.
Figure 1. Current measurement with an ampere meter
