The EMX-DVI 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 long DVI Cables on its output to 40 ft (12 m) by boosting and echo-canceling the DVI video output. Its ability to equalize cable losses makes it ideal to be placed at the far (display) end of long DVI cables.
By default, the unit is setup to buffer single link DVI (or HDMI) signals. Use the recessed LINK pushbutton to change the mode to support Dual link TMDS signals. There is an indicator on the top of the unit for the selected mode.
In most instances, when configured for Single Link extension, the unit can operate from the power available through the DVI source signal and no external power supply connection is required.
The unit ships with a universal power supply in case the power from the DVI input source is insufficient. The power supply is plugged in at the USB connector. When the USB port is connected to a PC (cable supplied), the unit is powered by the PC through the USB connection.
The DDC channel (that handles EDID and HDCP data) can either be bypassed through the EMX-DVI (so the source communicates directly with the connected display), or it can be emulated whereby the EDID is supplied from internal memory. The product is shipped with a fixed internal EDID table for emulate mode, but this table can be overwritten by either learning the EDID from a connected sink (display), or uploaded via the USB port using the free software from Hall Research. The user can revert to the original internal table if required, by performing factory reset using the software.
Advantages of having a mode that emulates the EDID are:
The EMX-DVI provides a driver free USB port for connection to a PC. The package includes a universal power supply, a USB cable for connection to a PC, and a CD containing the User's Manual and Windows™ PC. This software allows reading, saving, manipulating, and writing EDID tables to and from the device. The EMX-DVI modes (Bypass vs. Emulate or Single-Link vs. Dual-Link) are also controllable via the USB port.
 Hall Research EMX-DVI GUI / Uploader |
 EDID Editor Software |
The DVI connectors used on the unit are DVI-I (they have all the pin sockets even for analog RGB). The device provides DVI-I bypass for analog RGBHV (or VGA) signals (i.e. analog pins on the DVI-I input are connected to the output), so it can manage EDID for VGA sources and displays using inexpensive VGA to DVI cables or adapters.
Using free Hall Research Windows™ software, you will be able to read and save EDID data from any display. Edit the EDIDs using 3rd party free software available in the Additional Downloads
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