I want to check the via position on bottom side of PCB with the pin number below.
J20,J21,J22, K21, M19,M20, N22, P20, P21, P22
I used FMC Connector for LVDS.
But it is presumed that the signal distortion occurs and I want to apply the terminal resistance.
I would like to attach a resistor to the copper foil(via) but it is too hard to verify its position.