Force the capture card to use a specific EDID

Extended display identification data (EDID) is data provided by a video display device (usually a monitor) to describe its capabilities to a video source (usually a graphics or video output card in a PC or another device). The video source uses the EDID to determine the capabilities of the monitor to determine the resolution, color depth and other settings that the monitor can support.

EDID is crucial for DVI sources but mostly ignored by VGA sources.

Like monitors, each video capture card in theNetworked VGA Grid's HD Encoder contains an EDID. When you connect a VGA or DVI video source (such as a laptop or video camera), this source sees the Networked VGA Grid HD Encoder's capture card as a monitor and uses its EDID to negotiate which video signal to send.

Generally the capture card's DVI input correctly emulates a monitor that supports your video source. However sometimes, particularly if your source uses a custom set of display properties, you need to help your HD Encoder by uploading a custom EDID to force the capture card to report that it emulates a resolution, color depth, etc needed by your laptop, camera or other video source.

Upload a new EDID

In most circumstances the factory installed default EDID, is sufficient. However, there may be some cases where a video source uses resolutions that you do not want to use. In that case you can choose an EDID that forces the Networked VGA Grid's capture card to use a specific set of attributes.

The uploaded EDID is permanently installed on your system and this capture card (a "Source" in the Admin panel) will always share the uploaded EDID with the connected video input source.

EDID changes are permanent until you replace them with another EDID or specifically choose to restore the facotry EDID for a given source. Not even a system-level factory reset removes the configured EDIDs.

1. To download a new EDID file, go to the Epiphan support web page. The support page opens.
2. Select the support page for Networked VGA Grid.
3. Scroll to the EDID section.
4. Click on an EDID from the list. The file is saved to your downloads folder on your hard drive.
5. Connect to the Admin panel of the VGA Grid HD Encoder using your preferred connection mechanism. See Connect to the Admin panel.
6. Login as admin.
7. From the Admin panel, click Frame Grabber from the Configuration menu; the Frame Grabber Adjustments page opens.
8. Scroll to the EDID upload section.
   

9. Click Choose File; a file browser opens.
10. Browse to the location where the custom EDID file was saved and select the file.
11. Click open; the EDID filename is displayed on the screen.

12. Click upload, the EDID upload begins; the screen shows a progress inidicator.

13. When the upload is complete the page changes to reflect success or failure.