Hello,
I have a Peaktech 2170 LCR meter, which comes with Kelvin clips/leads.
I am measuring an inductor in the 100-200nH range (measured at 100kHz), and I noticed wildly changing values, between 40nH and 600nH. It seemed erratic until I found a way to reproduce it.
When I hold the clips in a steady position (so that the inductor coil doesn't get squished/stretched, and the connection from the clip to the DUT remains stable, too), but I move around only the leads going to the LCR meter, the measured inductance changes a lot.
When I keep the leads in a relatively stable position and recalibrate in this position, then the measurement is in the right ballpark. But if I reposition the leads the measurement is off again.
Is that normal behavior or is that a sign there is an issue with the leads?
If it is an issue with the leads, is there a test I can perform on the leads themselves to find out if maybe some strands are broken or something else is wrong (for example using a signal generator and a scope)?