Results of polsolve applied to our simulated EHT observations. Left: correlation between the true antenna D-terms and the values fitted using the LPCAL similarity assumption (see text). Center: correlation for the D-terms fitted after fifty iterations of polarimetry self-calibration. Right: L₁ norm between true and fitted D-terms, as a function of the number of self-calibration iterations, for the case of linear D-term approximation (black points) and full nonlinear D-term model (white points).