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SIX_STEP_COMPOSITE_VIDEO

2016-09-10 18:16  
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SIX_STEP_COMPOSITE_VIDEO
Circuit accepts negatively referenced output signals of TV sync generator and delivers 1 V P-P six-step composite video signal to 75-ohm load. 74121 mono changes wide horizontal blanking pulse to correct width for triggering oscillator IC. National LH002C current driver provides low-impedance drive capability for video signal. Used in testing TV sets and VTR decks.-M. J. Salvati, VFO Adds Versatility to TV Sync Generator, EDN Magazine, May 20, 1974, p 70 and 72.