Kramer Electronics 811 811 is a high performance test generator for audio and video signals. It displays 74 static or moving test patterns in composite video, s-Video (Y/C), component and SDI formats. The unit also outputs black burst, and variable amplitude and frequency audio tones. Multi-Standard - NTSC or PAL output (selectable). Outputs - 1 composite, 1 s-Video (Y/C), 1 component, 2 SDI, 6 black burst, 1 audio (variable frequency and amplitude). Desktop Size - Compact size. Two units can be rack mounted side-by-side in a 1U rack space with the optional RK-80 adapter.