Electro-Optical Multichannel Spectrometer Directly Interfaced to a PDP 11/20 Computer. Application in Fast Raman Spectroscopy.

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Abstract
This paper describes the hardware and software required to interface the TV camera tube of a CODERG UF 11 fast multichannel spectrophotometer with a PDP 11 minicomputer. Up to 21 lines of the video signal are sampled, each at 96 points, then stored in the computer memory. Each line is displayed separately for examination, afterwards significant ones are summed in order to enhance the signal/noise ratio of the spectra. A set of software modules facilitates spectral data processing. The capabilities of the system are illustrated by recording fast Raman and emission spectra, excited. by a 30 ns laser pulse.