Magda Posted January 4 Share Posted January 4 Hi, I was searching in help but couldn't find. If I use the W1-C1-DUT-C2-R-GND circuit what is the formula to calculate series resistance and reactance? I mean how the WaveForms calculate those values. Thank you for help. BR Link to comment Share on other sites More sharing options...
0 attila Posted January 5 Share Posted January 5 Hi @Magda For W1-C1-DUT-C2-R-GND is: re = magnitudeRatio*cos(phase) im = magnitudeRatio*sin(phase) gp = 1.0/rReferece + 1.0/rProbe bp = cProbe*2*PI*hz y = gp^2 + bp^2 rs = (im*bp+gp*(re-1))/y xs = (im*gp-bp*(re-1))/y + open/short compensation Link to comment Share on other sites More sharing options...
0 Magda Posted January 5 Author Share Posted January 5 Hi @attila Thank you for very fast response. That is very helpful. I only does not understand what magnitudeRatio is meaning and how to know the value. Basically I am asking because I use Diligent Impedance Analyzer measurements as a reference. The second measurement is done with the bench function generator and oscilloscope with the same circuit. I measured the V1, V2 and phase diff with oscilloscope and tried to calculate the impedance, but my calculation impedance results are not the same as from Analyzer.. Link to comment Share on other sites More sharing options...
0 attila Posted January 5 Share Posted January 5 Hi @Magda The magnitudeRatio is C1/C2 FFT magnitude at the frequency step. Link to comment Share on other sites More sharing options...
0 Magda Posted January 8 Author Share Posted January 8 Thanks a lot! attila 1 Link to comment Share on other sites More sharing options...
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Magda
Hi, I was searching in help but couldn't find. If I use the W1-C1-DUT-C2-R-GND circuit what is the formula to calculate series resistance and reactance? I mean how the WaveForms calculate those values.
Thank you for help.
BR
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