A Subjective Study of Color Synchronization Performances

The NTSC color-synchronization signal is reviewed to determine its operational quality. A subjective testing system is then described which dissects various receiver functions such that the thermal-noise impairment in each function may be evaluated. Results of these subjective tests show that color-synchronization performance is completely adequate under conditions of thermal-noise interference. The tests also show that the limiting factors of performance are primarily those functions which are common to monochrome transmission.