justOS 3G EDID Management


Overview

The default EDIDs that come on the 3G Transmitters cover a range of resolutions and audio formats that are widely supported. There may be some instances where the default EDID on the Transmitters does not produce the expected or desired results for a unique system, or for certain special resolutions, color-space options, or audio formats. In those cases, modifying the EDID on the Transmitter will produce the desired results.

If you are not able to get a 4K resolution out of your 4K capable source, first ensure that your 3G Transmitters and Receivers are running the latest firmware before attempting EDID modification. Updating to the newest firmware can fix the most common resolution related issues.

There are three options for EDID modification: Built-in EDID, Capture EDID, and Custom EDID. At any time, the default EDID can be restored through the web interface of each individual Transmitter.

These instructions are for 3G devices on justOS firmware. For 3G devices on legacy firmware (Ax.x.x), please see the article on 2G EDID Management.


View Active EDID

To view the active EDID on any Transmitter

  1. Log into the web interface of the Transmitter.
  2. In Video Statistics, click the Show button next to EDID Details
  3. The string of hex characters that appears is the current EDID.
  4. Reload the web page to update the information when the EDID changes. This output can be used to check whether the EDID management process has been run successfully.


Built-In EDID

Transmitters hold a selection of EDIDs for common Video and Audio formats.

To use a Built-In EDID:

  1. Log into the web interface of the Transmitter.
  2. In Video Settings, select the Built-In EDIDs option and select the desired Video and Audio Options.
  3. Click the Set EDID button to apply.
  4. The Transmitter EDID is updated immediately, but the source may need to be power-cycled to detect the new EDID.

The options that are available depend on the hardware capabilities of the Transmitter.


Capture EDID

Capture EDID uses the EDID of an active Display and copies that EDID onto a Transmitter. Once an EDID has been captured, the Transmitter will report to the Source as if the Source was directly connected to the original Display.

To capture an EDID:

  1. Power off or disconnect from the network any Transmitters that should NOT get the captured EDID. The capture process sends the new EDID to ALL active Transmitters.
  2. Log into the web interface of the Receiver that is connected to the Display that the EDID will be captured from.
  3. In Video Settings under EDID Settings, click the Capture button.
  4. The Receiver will grab the EDID from the Display, send it to all active Transmitters, and update to the new EDID. This process happens immediately, but the source may need to be power-cycled to detect the new EDID.


Custom EDID

Custom EDID uses a string of hex characters that represent the EDID information and writes it directly to the Transmitter. This process requires an EDID written in a format with no spaces or line breaks.

The example below is an EDID customized for a 4K AppleTV that asks for 4K HDR video and Dolby Digital 5.1 audio:

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

To apply the Custom EDID:

  1. Log into the web interface of the Transmitter.
  2. In Video Settings, select the Custom EDID option.
  3. Paste the EDID in the blank provided.
  4. Click the Set EDID button to apply.
  5. The Transmitter EDID is updated immediately, but the source may need to be power-cycled to detect the new EDID.

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  • 18-Feb-2019
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