Common Signals for ECU/LRU Testers

In making ECU and LRU testers, we come across a lot of common signal types.  We estimate that these common signals make up at least 80% of every such system.  Here's what we see, where we tend to see it, and how we commonly approach acquiring or generating it.

(These are expressed from the tester's point of view.  Our input is your ECU or LRU's output.)