When connecting the TSD108 to the DA100C:
Black = Ground (GND)Blue = Positive and Negative, interchangeable (Vin+ and Vin-)
When using this transducer with the EBI100C module, do not connect the GROUND pin of the TSD108 to the DA100C module. Doing so will cause inaccurate impedance measures, because the TSD108 contact surface is tied to isolated ground. An alternative is to insulate the TSD108 from the skin surface by using a latex balloon or some other non-conductive barrier. If this latter procedure is followed, the GROUND pin may be attached to the DA100C module.