Kramer Electronics 810 810 is a high performance composite video and s-Video (Y/C) color bar and 1kHz audio tone generator. It outputs two composite video and one s-Video color bar signal in either NTSC or PAL, and a 1kHz audio tone simultaneously. Output - 2 composite, 1 s-Video (Y/C) and 1 1kHz Audio tone. Multi-Standard - PAL or NTSC output (selectable). Compact Kramer TOOLS - 3 units can be rack mounted side-by-side in a 1U rack space with the optional RK-3T rack.