We have our Cyclone10GX custom PCB, which is having cy10 interfaced to SFP module(1.25Gpbs Finisar) via its transceiver port. How to prove that the board is fine wrt Signal integrity.

We have tested the board using transceiver toolchain( avilable in Quartus) using a project with NATIVE-PHY ip integrated. The transceiver toolchain shows BER of zero when we test at data rate of 125...