Device Between Hdmi Output Board And Monitor - AMX DGX1600-ENC Hardware Reference Manual

Custom HDMI and DVI EDID Files for Handling Audio/Video Concerns
HDMI, DVI, DXLink Twisted Pair, or DXLink Fiber Boards will be connected to multiple source and sink devices. These devices often
support different video and audio formats. Potentially, neither the video nor the audio routed by the system can be displayed on
one or more of the destination devices.
Customizing the EDID content at the Enova DGX input channels is one way to be sure that the formats provided by the source are
compatible with most/all of the destination devices.
The HDMI and DXLink Twisted Pair Boards are preprogrammed with the equivalent of the file "AMX_HDMI1v3__Standard.edid" to
support basic audio only (2 CH L-PCM 32 kHz, 44.1 kHz, and 48 kHz). The DXLink Fiber Boards initially do not have EDIDs loaded;
however, they obtain EDIDs (on a per channel basis) as soon as they are connected to DXLink Fiber Transmitters. The DVI Board is
preprogrammed with the equivalent of the file "AMX_DVI1v1_BaseBlockOnly.edid." Both files are in the AMX_EDID_Library.
The files in the following two tables are located in the AMX_EDID_Library file at www.amx.com (search for EDID Library). Additional
files provided in the EDID Library include support for 3D deep color and High Bit Rate (HBR) Audio.
Files using 1080p (VIC 16) as the preferred and native video resolution:
File Name
AMX_HDMI1v3__Standard.edid*
AMX_HDMI1v3_A__Surround.edid*
Files using 720p (VIC 4) as the preferred and native video resolution:
File Name
AMX_HDMI1v3_B__720p.edid*
AMX_HDMI1v3_C__720p_Surround.edid*
* File names containing "AMX_HDMI1v3" do not in any way refer to the HDMI v1.3 standard.
Audio Troubleshooting
The default EDID for input boards only supports 2 channel L-PCM audio. If a source chooses to ignore this EDID and send a format
that is not in the EDID, the audio may not pass through the Enova DGX at all or it may be distorted. To present other types of audio
formats to the source, a different EDID must be loaded (see the AMX EDID Library at www.amx.com (search for EDID Library). If
after changing the EDID on the input board, the audio is still distorted or is not present on the destination device, then the device
may not be capable of supporting the requested audio format with the newly loaded EDID setting. In this case, a standard EDID
should be used and the sources set up to only pass the type of audio that the downstream destination devices can handle.
Checking for Support
One way to check if a destination supports a particular type of audio format is to capture the EDID using DGX Configuration
software's EDID Programmer tab and paste the EDID data into a free-ware EDID reader program (e.g., www.edidreader.com).
For additional information and a table showing which types of audio the different types of boards support, see page 73.

Device between HDMI Output Board and Monitor

Sometimes a device (e.g., a video processor) between a DGX HDMI Output Board and the destination monitor is intentionally
installed to alter the image scale. If that is not the case and you have image problems, you need to be aware that the scaler
override function is responding to the EDID from the extra device rather than from the monitor. One possible solution is to use the
DGX Configuration Software to read and save the EDID directly from the monitor and then apply the override values to the output
(directions follow).
To read EDID directly from monitor and apply override values to output:
1. Remove the device between the output and the monitor.
2. Connect the output directly to the monitor.
3. Install and open DGX Configuration Software (see page 270).
4. Select the Scaler Override tab.
5. Under EDID Source, select the Enclosure and select the Output number connected to the desired destination from the drop-
down lists.
6. Click Refresh EDID.
7. From the File menu, select Save to File and save the settings to a file.
8. Replace the device between the output and the monitor.
9. From the File menu, select Open File and open the previously saved file.
Hardware Reference Manual – Enova DGX 100 Series Digital Media Switchers
Monitor Name
AMX_HDMI1v3 Supports basic audio only: uncompressed 2 CH L-PCM stereo audio
with sample rate of 32 kHz, 44.1 kHz, or 48 kHz.
AMX_HDMI1v3_A Supports surround sound: audio up to 192 k for 48 kHz Dolby Digital
(5.1), 48 kHz DTS (5.1), and basic audio (uncompressed 2 CH L-PCM
stereo audio with sample rate of 32 kHz, 44.1 kHz, or 48 kHz).
Monitor Name
AMX_HDMI1v3_B Supports basic audio only: uncompressed 2 CH L-PCM stereo audio
with sample rate of 32 kHz, 44.1 kHz, or 48 kHz.
AMX_HDMI1v3_C Supports surround sound: audio up to 192 k for 48 kHz Dolby Digital
(5.1), 48 kHz DTS (5.1), and basic audio (uncompressed 2 CH L-PCM
stereo audio with sample rate of 32 kHz, 44.1 kHz, or 48 kHz).
Appendix F – DGX Configuration Software
Description
Description
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