Hi nRF
I just bought the new PPK2 tool which I think is awesome. However I think there are some issues with it.
Issue 1:
First of all thy X axis scaling is wrong by a factor of 6, that is the time measurements performed/showed in the PPK2 Power Profiler tool reports timing to be 6 times shorter than real life. See attached pictures. The "Power profiler snaphot" file is a snapshot of the current consumption of 869 Mhz transmitter in active transmitting state. As can be seen the selected area is reported to be ~60 ms. However taking the measurement with an oscilloscope (voltage drop over a 5 ohm series resistor) it is reported to be ~370 ms (time between the cursors in the "oscilloscope snaphot" file). Are these observations correct? I also noticed that when the X scale is set to a span of 3 sec I would expect a current change to take 3 sec to travel from right to left when live view is turned on. However it takes 18 sec. Am I missing something here?
Issue 2:
Again looking at the Power profiler snaphot" file, in the selected area there are a lot of measurement points reporting almost 0 uA current drawn by the DUT, but in the "oscilloscope snapshot" file, it doesn't reveal that (which is correct). Is this due to auto-scaling of the measurement circuitry within the PKK2 tool? At other points the PKK2 tool reports up to 27 mA but the DUT only consumes ~5 mA in theses states, I guess this is the same issue just sort of reversed (or could it by RF from my 10mW transmitter entering the sensitive measurement circuitry in the PKK2?)
Can you confirm there are issues with the tool or do I have a faulty unit?
0675.Power Profile Snapshot.pdf
7522.Oscilloscope Snapshot.pdf
br
Kim
