I have to measure the impedance of the capacitor using the AD5933 evaluation board.
Accuracy of the data sheet(Total System Accuracy 0.5%) as can not be obtained.
At high frequencies(100kHz), the measurement error is large compared to the master unit.
As there is Rcal,RFB of Calculation in AN-1252, in the case of known impedance, it is possible to measure by adjusting the calibration resistor, I think to be able to approach the true value.
Please advice on how to reduce the error (less than 1%) in addition to the adjustment of the calibration resistance in case of measuring the unknown DUT.
<Evaluation Board Condition>
System Clock：External clock
Calibration Impedance：R only
Calibration Gain Factor：Multi Point
RFB,RCAL is same register