I had a system I was working on, using 255 lines at 40 fields per second. Interlaced, obviously, with 220-242 (min/max) lines of visible video information. Line rate is 5100Hz. No color system devised yet, so simple monochrome. HSync is 20uS, 0v. Black is 0.5v, and white is 1v. For vertical sync, it simply DC shifts down 0.5 volts for 6.5 - 27.5 lines, making the average about 0v, with Hsync being pushed to -0.5 volts. Total bandwidth is about 1.5 - 2MHz. Any tips/advice or modification ideas???
