compatibility

What is the name of the manufacturer and model of the equipment you are working on? 

ok here's the deal. I've got a collection of stress test systems/workstations.Then I have a few stress teeadmills. I am trying to figure what can go with what. I have marquette, cardiac science, ge and hp systems. Then I have Trackmaster & Quinton treadmills. Don't some of the systems accommodate a varierty of treadmills?

Thanks so much