Proportional Bandwidth Spectrum Analyzer.

The manual contains descriptions and schematics of the proportional bandwidth spectrum analyzer (PBSA). It contains a brief description of the overall system, more detailed functional descriptions of the parts of the system, and schematics with timing diagrams and magnetic core layouts. The manual is divided along these lines into the three parts: General information; theory of operation; and, schematics. The PBSA is a signal processing portion of a developmental device to be used for research in underwater acoustic reception.