SmartScope Duo from Blackmagic Design is a 3RU rack mount unit with two independent LCD displays. In addition to monitoring picture, the key features include waveform, vectorscope, RGB parade, YUV parade, histogram and audio phase levels. Each monitor is independent so users can display any combination of scope or picture view. The unit is also reversible, which means you can install it upside-down and the picture will flip right-side-up automatically. This is especially helpful when mounting at in the very top or bottom of an equipment rack. The included SmartView Utility for Mac and Windows allows you to daisy chain multiple units together on an Ethernet network and control them all from one location.