I am using the instrument NI PXI-6052E to measure voltage. There is a large voltage signal that comes out when there is no voltage passing through the wire. The signal is about 3V, but it seems to vary a little (but not periodically). I have tried to do a number of things in both Labview and with the physical set up, but there is still this huge error. Can anyone help me?
Hey, I forgot to reply with what happened. So, the imput signal wasn't open, but I looked up ghosting anyway and it helped. In the end, it turned out that we were using ports with different ground potentials.