gEEk spEEk – Mechanics of Using the Public COM Code

Presented by: Richard Mellitz Channel Operating Margin (COM) is an electrical figure of merit for a channel derived from a measurement of its scattering parameters and a table of configuration parameters. These parameters may be represented as a machine readable form in a spreadsheet. COM is normative for many IEEE and OIF specification for data rates over 25 Gb/s. COM is described in Annex 93A of IEEE Std 802.3™-2018. An example of a COM implementation is available as a Matlab® script. The subject of this presentation illustrates the operation of the COM script as well as exploration of features of the many parameters and control keywords. The example of using COM explores the required reference packages and then segues into examples and caveats for utilizing the COM script with user packages. Operation are depicted as example screen shots.