Accession Number : ADD001295

Title :   Raster Display Generator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Eno,Frederick L

Report Date : 20 Aug 1974

Pagination or Media Count : 5

Abstract : The patent describes a raster display generator to display the output of a spectrum analyzer in the form of a raster display on a storage oscilloscope. The generator comprises a step generator wherein a preselected capacitor is charged uniformly in discrete steps, by a constant current generator, one step per sweep of the analyzer, and the resulting D.C. voltage level is superimposed on the spectrum output of the analyzer. The step generator circuit is controlled by the unblanking pulse output of the analyzer so that the capacitor is charged only during the sweep flyback interval, the period of time between the end of one sweep and the start of the next. The unblanking pulse remains at a fixed voltage level during the sweep and goes to zero volts during the flyback interval.

Descriptors :   *Display systems, *Rasters, *Patents, Spectrum analyzers, Oscilloscopes

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE