I am using DAQ 6014 card. I have made a differential connection. In the SCB 68 connector block, i have shorted the input and the output to check the values.
But the analog input value i am reading in is always higher than my outut, why is this? say i give o/p s 4 volts, the i/p I read is 4.2 volts.. How to make both exactly same.. Thank you