I am trying to make a Fraday cage around some very low inputs. I need to have a GND plane on layer 1 and 3 of a 4 layer PCB. Layer 2 is the layer with the input traces (16 signals). How can I do this? I have made a pour copper for layer 3rd but when I pour the copper it does not show up. Does anyone know what I might be doing wrong?
Please sign in to leave a comment.