RE: The average current measured by PPK2 is inaccurate, with a deviation of approximately 8%.

PaKa — Tue, 16 Dec 2025 15:13:13 GMT

One thing to check for the desktop multimeter, is it averaging over longer time? There are a lot of short pulses on the current flow with the Nordic devices and without this longer filtering time (we use 1s with Agilent meters) then you more or less always get incorrect readings.

But as Simon says, this is high compared to the spec but inside. Normally we see less than a couple of percents off.

RE: The average current measured by PPK2 is inaccurate, with a deviation of approximately 8%.

Simon D-M — Tue, 16 Dec 2025 11:58:54 GMT

Hi,

The accuracy you are measuring is inside the expected range (link). for the "500 µA–5 mA" range, we have a typical +/-10% accuracy on the average value.

[quote user=""]1. The test result of the PPK2 I purchased differs significantly from that of the high-precision ammeter, approximately 8%. This has a considerable impact on our daily tests. Could you please explain what the reason is?[/quote]

This device has not been made for absolute accuracy, it has been made to give a way to monitor very small current. It is very useful for current debugging an application and also to make good estimations on current consumptions.

[quote user=""]2. Is the measurement accuracy of PPK2 inferior to that of ordinary multimeters and high-precision ammeters?[/quote]

Yes, it is worse than some ordinary multimeter in certain range. However, it can measure current that are magnitude lower than most multimeters. It also has a desktop app that logs all the current consumption and help with estimating battery life, current debugging, and so on. Thus, cannot really be compared to a normal multimeter.

Concerning, the high-precision ammeter, of course it will be better at measuring. But it will also probably be orders of magnitude more expensive than our PPK2. So it also cannot really be compared.

Best regards,

Simon D-M