This paper describes the initial prototype of a system developed to interface to electrochemical sensors designed for the detection of Bovine Respiratory Disease pathogens. As context for the electrochemical interface, a description of the proposed final on farm diagnostic tool and an outline of the current diagnostics method is given. The system used was low cost, has the potential to be of a suitable form factor and utilises commercial components. An ability to perform one of the necessary electrochemical tests, Cyclic Voltammetry, for the diagnosis of the sample was demonstrated on one of the electrochemical sensors. This work gives an insight to the challenges of interfacing to electrochemical immunosensors.