In this work, we have continued "Study on an inter-channel crosstalk in a multi-channel optical transmitter module for multi-level pulse amplitude modulation”, which was funded by JSPS KAKENHI until March 2020. In KAKENHI work, the new method which can halve a measurement time of a crosstalk penalty by replacing some of bit-error-rate measurements with measurement of noise power was proposed and verified by optical transmission simulation using a transmission system model equipped with ideal models of electro-absorption optical modulator and photodiode. In this work, accurate models closer to real optical devices have been used in the transmission system model instead of the ideal device models. With this upgraded model, the proposed evaluation method has been verified, and its effectiveness had been confirmed. In addition, we have also examined a method for evaluating the crosstalk penalty based on the degree of signal waveform deterioration due to the influence of crosstalk.