An instrument suited for FTFAM (Fourier Transform Faradaic Admittance Measurements) has been constructed. It is controlled by two DSP:s (Digital Signal Processors, TMS32010) and a PC (Personal Computer) is used as main controller. The signal processors share program and data memory with the PC which permits fast data transfer and program downloading. One DSP generates the excitation waveform while the other acquires the potential and current signals. Frequencies up to 10 kHz are used in real time multifrequency analysis of electrochemical cells.