I have a USB 6210 DAQ Board and I am trying to input a continuous load cell voltage with respect to ground (RSE). However, when i connect the load cell to the board (+ output to AI pin, - output to AI ground) it shows a 2V peak to peak, high freq. waveform centered at 0V. This doesn't increase when a load is applied either. I have also tried other load cells, they all exhibit the same characteristics.
When i connect a variable power supply, the USB 6210 reads the voltage data fine. Additionally, i have measured the load cell output using a DMM and the output is acceptable, so the load cells are working and outputting the correct voltages.
Does anyone have any idea why the USB 6210 board will not read the voltage data correctly, when the DMM is? Why will a variable power supply input data correctly but the sensors exhibit a noisy, high freq waveform?
I am using LabVIEW 2009, DAQmx 8.9.5 and all tests have been run using the DAQmx test panels.
