Due to the use of PAM4 in PCIe® 6.0, the optimal receiver parameters are needed to achieve the best possible bit error rate in the RxLEQ Test. This video introduces the Return Path Optimization Function of the MP1900A. Link Training, BER/Jitter Tolerance Test, Tx LEQ Response Test, and new FEC debugging functions for PCIe® 6.0 Flit analysis are also presented.