This versatile device can be used to extract the audio from HDMI, extend HDMI cable length, manage EDID (pass-thru or emulate), and re-clock both TMDS video and DDC data. The use of EMX-HD-AUD can often resolve system level HDMI signal-chain issues by acting as an intelligent intermediary.
The EMX-HD-AUD is powered from the HDMI source input and no additional power supply connection is needed for most applications. A USB power supply is included and may be used in case the HDMI source has limited power.
Use the EMX-HD-AUD wherever you want to diagnose or resolve HDMI issues. It can fix problems caused by incompatibility of components in the video signal chain, signal degradation due to long cables, or issues related to EDID.
Multi-color LED's on the unit indicate the mode of operation with regards to EDID routing, and also provide real-time status on the HDMI signal's video and audio. The audio outputs include stereo analog on a 3.5mm jack, Digital audio (2 or multi-channel SPDIF) on optical TOSLINK connector, and of course the audio that is embedded in the HDMI output stream. Each of the audio outputs can be independently muted. For example, you can remove the audio from the HDMI output. This would be desirable in many applications if the connected TV's audio were causing annoying echo due to processing delay.
The EMX-HD-AUD constructs an EDID table (capabilities list) for the connected source. This table either is copied verbatim from the connected display (sink) when in pass-thru mode, or substitutes an internal EDID data from on board memory. The internal EDID data can be learned from any connected display by using the buttons on the box, or uploaded to it from a PC via the USB port. Most importantly, the device maintains HDCP compliance regardless of the EDID routing mode, so HDCP protected content pass through the system with protection intact even when EDID is being emulated from internal memory.
The EMX-HD-AUD is HDMI 1.3 and 1.4 (deep-color and 3D) compatible, and automatically compensates for the signal degradation caused by long video cable runs of up to 50 ft (15 m) on its input and can drive HDMI cables on its output to 30 ft (10 m).
The package includes a universal power supply and a USB cable for connection to a PC. Free Windows PC software is available on the product's website that allows reading, saving, manipulating, and writing EDID tables to and from the unit. The software can also be used to control the operational modes and provides diagnostic tools such as indication of the HDMI input signal's video and audio characteristics.