The 840Hxl is a high performance HDMI video test pattern generator. It generates 32 preset patterns at 16 popular computer, HD and seven user-defined resolutions. It includes several unique patterns that incorporate motion. Patterns – 32. Outpu…t Resolutions – All common PC and HDTV resolutions. Color Space – RGB, YUV 444, YUV 442 & auto. Embedded Audio – 6 sample rates & 3 bit depths. HDTV Compatible. Controls – HDCP On/Off, Embedded Audio On/Off. Indicators – 2-digit display, power LED. Control – USB and RS-232 ports for connecting to a controlling PC (PC control software included).