The Very Wideband Parameterizer (VWBP) uses a combination of analog, optical, and digital signal processing to deliver sustained computing throughput in excess of 120 GFLOPS. The VWBP analyzes several hundred megaHertz of RF in real time, employing advanced analog dynamic range, cross talk, and intermodulation product analysis to ensure sufficient signal quality for accurate analog to digital conversion and subsequent processing. One of ISA's custom analog down-converters appears below. An aggregate sampling rate of more than a billion samples per second digitizes and feeds the RF signal to signal processing software running on Sun host computers, where parameterization takes place. The parameterization process produces descriptor words suitable for both automatic and manual follow-on processing.