Re: Hardware calibration without moving the jumper


Yury Kuchura EU1KY
 

Hi Chris,

The DUT impedance transformation caused by stray capacitances, inductances and  transmission lines (like pigtail) can be presented as a quadripole and can be effectively excluded by OSL calibration. But constant phase and magnitude offsets cannot. The main goal of HW calibration is to remove these constant amplitude and phase differences between the frontend channels before impedance measurements.

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