Description
The Tributaries USB-VI, HDMI Voltage Inserter was designed to solve the problem of signal drop-out due to insufficient current from the HDMI source component. The HDMi® Specification requires a source to provide a stable 5VDC with a minimum output current of 55mA. Voltage from the source turns on microcontrollers in the sink device and allows the sink to return the 5VDC via the Hot Plug Detect line. The DDC communicates the EDID information and then the HDCP handshake takes place. This handshake is the gatekeeper for the entire HDMI signal. Not only is this required on start-up, but authentication is repeated continuously; if there is an error in this communication the system will not operate properly. These errors will cause flashing images from a HDCP errors, distorted video related to EDID or even complete loss of the image caused by HPD failure.
