Hi, everyone,
I have a PCI-6013 set up for data aquisation. In the past, I have no trouble reading data using it.
But recently, I need to add one more signal to the input. Before I connect the signal to the DAQ, I measured this signal using a multimeter, the reading was 0.1V and was constant. But when I connected this signal to DAQ, using test panel in Measurement and Automation, I could see that the reading was totally nuts. It looked like random zigzag jumping from 10V to 0V to 3V. I changed a BNC cable that connecting my new signal to DAQ, the reading was still wrong. But using the same channel, I can read my old data input correctly.
My DAQ's input is differential.
Any one has any idea?
Thank you very much.
