This digital analysis device is used during the installation of a HDMI system, cleans and corrects some corrupt data (EDID and HDCP). It also removes the choke hold and provides the manufacturers intended dynamic range. LED indicators to help detect if your signal is robust enough. Specifically looks at the 5V feed from the source and the display, the 2.5V return, and the clock and data feeds. Supports up to 1080p 3D.