Not all models can use lumped ports due to the polarization of the fields and how sources are specified. For the physics interfaces and study types that support the lumped port, the Lumped Port is available as a boundary feature. See Lumped Port for instructions to set up this feature.

For example, a lumped port with port number 1, defined in the first geometry, for the Electromagnetic Waves interface with the tag emw, defines the port impedance variable emw.Zport_1.