Data acquisition and evaluating systems for a low resolution mass spectrometer

Data from a combined gas chromatograph-mass spectrometer have been obtained and recorded on-line to an IBM 1800 computer, and also on an off-line digital magnetic tape recorder for later processing of the data by the computer. Incremental and continuous modes of recording were used and in all cases a fast electronic mass marker established the mass scale. Several hundreds of mass spectra were consecutively recorded. Computer programs have been developed to evaluate the mass spectrometric data.