I have a CEA-13-250UW-120 strain gage that I would like to use to measure the compressive strain on a specimen. I have NI 9949 connected to a NI 9237. The strain gage has three wires. I have the red connected to PIN 2 (IN+), black to PIN 6 (EX+) and white to PIN 7 (EX-) on the NI 9949. On the DAQ Assistant, I have gage factor of 2, internal resistance of 120, vex source internal, vex value 2.5 and strain configuration quater bridge. When I click run, I only get a straight line. What am I doing wrong?
