The SR235 Analog Processor is an efficient equipment that handles large variety of functions pertaining to signal processing for as many as two inputs. Some examples of the usual functions are - background subtraction, logarithmic compression and ration that can be expertly implemented by SR235. Some more features of this equipment include accurate output functions, variable gain, and filtering. This model can also be added to any relevant box car system that cannot comply with a computer for its signal processing.