FH-2It is a CV expander. Add 8 CV outputs to FH-1 per FHX-2CV. Up to 8 FHX-7CV can be connected.
From the "Expansion OUT" on the back of the FH-2 board, connect it to the "Expansion IN" of the FHX-10CV with a 8-pin cable. When connecting multiple FH-2s, daisy-chain serially from "Expansion OUT" of FHX-2CV connected to FH-8 to "Expansion IN" of another FHX-8CV. All connecting cables should be connected with the red stripe facing down.
Channels assigned to individual FHX-8CVs are set with jumpers on the back of the module. The table below shows the jumper arrangement and expansion numbers. By default, only jumper 3 is ON and assigned to expansion number 1.