Answer: No, you will need a separate pressure-amplifier to connect the pressure-arm of your catheter. The output of this pressure-interface is connected to the Sigma-5DF (and thus to the A/D-board in the computer). Depending on the catheter used you may either use a stand-alone interface (for the CD Leycom catheters for instance you will need a Sentron pressure-interface) or an interface connected to a patient-monitor. A patient-monitor normally takes care of excitation and will amplify the pressure-signal, the output of which is connected to the Sigma-5DF.