Hey, There's one more NRSE/DIFF issue that I neglected to mention. Usually when using an NI Data AcQuisition card such as the 6014, you specify that the board is in Non-Referenced Single Ended or Differential mode, but it is possible to have both types of analong inputs on the same board. There's a helpful knowledgebase describing how to select different modes on the same board. It's KB-0N1D2L4N located at http://digital.ni.com/public.nsf/websearch/D749C2885073AA918625635C0066AA93?OpenDocument
Good luck with this! Marcus G. National Instruments
