Instruction manual

Appendix A – DGX Configuration Software
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Instruction Manual – Enova DGX 8/16/32 Digital Media Switchers
Board Support for DVI and HDMI Signals – Changing the Default EDID Setting
Another reason to re-program EDIDs is to support different source signals on a single board. Because
each input can be changed independently (e.g., an HDMI Board can support both HDMI and DVI
sources), inputs can be set up for specific sources or for the most common source device expected to be
connected.
Note: HDMI-to-DVI or DVI- to-HDMI conversion requires an applicable conversion cable.
The EDID resolution and audio support variances between HDMI and DVI (which are provided as
defaults) help to identify if they need to change from the original (factory loaded) EDIDs on each input.
DVI Boards
The DVI Input Boards come pre-loaded with EDIDs typical for DVI output devices (computer monitors,
etc.) which do not support embedded audio signals. However, they will allow HDMI with embedded
audio formats through if the default EDID setting is changed via DGX Configuration Software using a
file from the EDID Library (see Option 2 below).
HDMI Boards
The HDMI Input Boards come pre-loaded with EDIDs typical for HDMI output devices (DVD players,
etc.). However, they will allow DVI formats through if the default EDID setting is changed via DGX
Configuration Software using a file from the EDID Library (see Option 2 below).
Options for Re-programming EDIDs
If EDID re-programming is necessary, use one of the following two options.
Option 1: Install the DGX Configuration Software and open the EDID Programmer view.
Read the EDID from the output connected to the destination device and write it to the DVI or
HDMI input connector.
Option 2: Install the DGX Configuration Software and open the EDID Programmer view.
Check the AutoPatch_EDID_Library file at www.amx.com (search for EDID Library) to
determine if one of the custom EDID files meets the needs of the equipment. (The custom
EDID files are variants of base EDIDs.) Open and write the custom EDID file to the DVI or
HDMI input connector.
Troubleshooting Tip: If you have changed EDID from the default (which supports 2 channel
L-PCM as embedded audio) and are experiencing audio problems, it may be because you are trying
to pass Dolby or DTS or high PCM frequency rates and the destination device does not support
them. If you are experiencing video problems, it may be because you are trying to pass a video
format that the destination device does not support. In either of these cases, re-programming the
EDID may help resolve the problem.
Reading and Saving EDID Data from a Destination Device
Tip: In the EDID Programmer view, the Save to File option under the File menu can be used to save
the EDID information as an .edid file. The saved file can be opened as a text file (from the File menu,
select Open File) and edited or opened and written to an input (click the Write button).
The instructions that follow tell how to use the EDID Programmer view to read and save the EDID
information from an output, which is receiving the EDID information from a destination device.
Note: The availability of the Read and Write buttons depends on whether an input or output is
selected in the device tree on the left. (Read from an output and write to an input.)
troubleshooting tip audio
problems