Minus display on LCR meters

QI was using your discontinued 3522-50 LCR Meter and replaced it with the IM3533. Upon measuring the Ls, Lp, Rs and Rp values are now displayed with a minus sign. What does this happen?

A

The polarity display on Hioki LCR meters vary according to model number:

3522-50:  Except for impedance phase angle θ, all values are displayed in terms of absolute value.  To identify the polarity, please refer to the impedance θ.  This also applies to Model 3532-50.

IM3533:  The calculated values are presented as is, including the polarity.  Please refer to the instruction manual for more information about the calculation formulas.

This also applies to the other LCR meters in the IM35XX series.