We have a measurement computing A/D (USB-1616HS-BNC) hooked up to a computer that also has an instrumented treadmill hooked up to it. When we enable the instrumented treadmill, we see voltage spikes in our analog out data. I suspect we may need an isolator. I saw in the technical manual recommendations for ISO-RACK and ISO 5B-series. What are the differences and do you think one of these products would solve our problem?