RE: PPK question

Einar Thorsrud — Thu, 03 May 2018 10:47:14 GMT

Hi,

It should give correct measurements, assuming you have correctly set the switches on the PPK as described in the figure from the documentation that you have included in your question. Are you confident that the measurements are wrong? Could there be some components on your DUT that actually consume a lot of current? Could you for example double check using another method, such as measuring the voltage over a (say 10 Ω) resistor on the supply line?

A common reason for getting high current measurements is reversing the polarity of the cables powering the DUT (between the PPK and DUT), but in that case the plot should have been cleaner (and obviously the DUT would not work).