Setting Up Ports as Differential Pairs

A differential pair represents two circuits, one positive and one negative, which are routed close together so they pick up nearly the same amount of noise. The two signals are then subtracted from each other by a receiver, yielding a much more noise-free version of the signal.

You can define existing ports to be differential pairs by first selecting the ports , then accessing the Differential Pairs window.

Differential Pairs window can be opened from multiple places:

• Network Data Explorer: Edit > Define Differential Pairs
• Ports Folder in a Nexxim Design: right-click Ports > Differential Pairs
• Excitations Folder in a 3D Layout Design: right-click Excitations > Differential Pairs

When differential pairs have been set up, the Diff.Name and Comm.Name entries are available in reports. For more information see Set Differential Pairs.