Forgive my fuzzy terminology. I am using the PCI 6520 switch connected to the CB-37F controlled via Labview. I called the 37F a relay because, to my understanding, it behaves like several voltage triggered switches in one block. Some of the pins on the 37F are grouped in sets of 3 (NC, COM, NO) while others are in groups of 2 (COM, NO). The path is dependent upon what values I write to the PCI 6520 lines. However, I cannot find a diagram that maps that out for me. Otherwise, how can I tell where to put my input and output wires relative to each other?