The BG-4YC Black Burst Generator has four microprocessor controlled, digitally generated, stable black burst outputs suitable to drive Genlock inputs of the equipment in an edit suite. There is also a 1 kHz tone output, either balanced or unbalanced. The Model BG-4CB includes selectable black burst / full field color bars, plus NTSC/PAL operation and 4V Sync Video Generator S-video/SVHS/Hi8.