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What is a COM anyway? Channel Operating Margin, or COM, isn’t well understood. Since it isn’t well understood, many people doubt it really means anything. After all, how can channel quality be represented by just one number in decibels? It turns out, COM is actually the latest evolutionary step in a long progression of channel validation techniques using eye patterns. This blog will trace the evolution of COM back to its roots and put meaning...

Have you ever run a board re-spin only to discover you’re not even sure what the changes were? I’m not talking about comparing GERBERs from Rev A to Rev B, rather I am referring to understanding the requirements that drove the changes, the reason behind the changes, and all the dialog that was happening around the changes. For most of us we capture these details via email, commit history in our version control system (e.g. Subversion, Perforce, C...