As part of the Kramer TOOLS line, the new VA-1VGAN captures and emulates the EDID data of a display. EDID (Extended Display Identification Data) is a data-structure consisting of 128 pieces of information that a display provides to the graphics card of a connected computer source. The EDID describes the display’s capabilities so that the source can output the best possible signal for that display. The source and the display exchange this information over the Display Data Channel 2 (DDC2) using pins 12 and 15 of a standard 15-pin HD computer graphics video signal connector.
According to Kramer, the VA-1VGAN ensures that if a display is turned off, temporarily disconnected or is out of communication with the source, the source continues to output the best possible signal resolution. The VA-1VGAN makes the source think that the display is still directly connected even when the EDID information is unavailable.
For complete specs, go here: http://www.kramer-us.com/products/model.asp?pid=1597&sf=220