nRF7002 DK v1.0.0

Using an ampere meter for current measurement

The average current drawn by the nRF7002 DK can be measured using an ampere meter. This method monitors the current in series with the nRF device.

Make sure you have prepared the Development Kit (DK) as described in Preparing the nRF7002 DK.
Connect an ampere meter between the pins of connector P23 as shown in the following figure.
Figure 1. Current measurement with an ampere meter
Current measurement with an ampere-meter on nRF7002 DK
An ampere meter will measure the average current drawn by the nRF7002 DK if:
  • The DK is in a state where it draws a constant current for the activity on the device changing load current, like Wi-Fi® connection events, is repeated continuously and has a short cycle time (less than 100 ms) so that the ampere meter averages whole load cycles and not parts of the cycle.
  • The dynamic range of the ampere meter is wide enough to give accurate measurements from 1 µA to 15 mA.

It is recommend to use a true Root Mean Square (RMS) ampere meter.