Hi all,
I'm used NI 9214 to measure thermocouple reading which connected using NI TB-9214. When I connect thermocouple and then taking a measurement for each channel (connect one by one for the entire channel), the measurement is fine. But when I connect a thermocouple at a few channel, some channel give a common mode error. I don't have an idea why this error occured and how to solve it. Please advise. Thank you.