1. A method of controlling a digital demodulator coupled to an equalizer, the method comprising the steps of: generating an equalizer value; filtering the equalizer value to obtain a post filter output; subtracting an equalizer output signal from decoded data and generating an error value; correlating the post filter output with the error value to obtain a correlated value; developing a control signal from the correlated value; and adjusting the digital demodulator using the control signal.