AMX AVB-RX-DGX-SC Fiber-DVI, Instruction Manual

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EDID Programmer
52 DGX Transmitters & Receivers Instruction Manual
DGX TX Modules and EDID
As long as the source signal being transmitted is supported by the display device, the result should be a
good image on the display. If the source signal being transmitted is not supported by the display device,
the result will be either a badly distorted image or no image at all.
To address these issues, the DGX TX comes with an EDID EEPROM chip for the input connector,
which has been pre-loaded with an AMX AutoPatch EDID set. This EDID set consists of 24 of the most
common EDID settings in use today, including all VESA Established Timings encompassing 8
resolutions at a variety of refresh rates and 8 additional Standard Timings encompassing 8 resolutions
and refresh rate combinations (for timing details, see page 20). In almost all cases, the DGX TX can be
used straight out of the box with no adjustments (see “Determining the Need for EDID Programming”
on page 52).
The EDID Programmer software has been provided for cases where additional in-field re-programming
of the EDID chip is needed. EDID Programmer software can be used for the following:

Reading and saving EDID data from a device

Writing EDID data to a DGX TX input connector’s associated EDID EEPROM
Note:
Any analysis or editing of the EDID data necessary to support the equipment specific to your
installation will need to be done separately prior to using the EDID Programmer. A variety of
freeware tools can be found on the web to help with these tasks.
The remaining sections provide information on:

Determining the need for EDID programming

Installing the EDID Programmer

Reading and saving EDID data from a destination device

Writing data to the DGX TX
Determining the Need for EDID Programming
Ideally the EDID analysis will have been completed during installation specification. If this was not
possible but the system’s devices are now available, the most effective way to proceed is to test if the
signal from the source device can be transmitted through the DGX TX and RX to the destination device.
If the signal can be routed (i.e., the image is present), then EDID programming is
not necessary.
To determine if EDID programming is necessary:
1. Install the DGX TX and RX according to the installation procedure starting on page 29.*
2. Check the destination display to verify that the picture is present.
If the picture is not present, see “Troubleshooting” on page 57 before proceeding.
Note:
If the destination does not display a picture, analysis or editing of the EDID data may be
necessary prior to using the EDID Programmer. A variety of freeware tools can be found on the web
to help with these tasks.
* If a DGX TX and a DGX RX are used in conjunction with a DGX matrix switcher, install the modules
and the matrix switcher and then route the video signal to verify that the picture is present on the
destination(s). (The system could also include just a TX or an RX depending on the boards in the matrix
switcher; for setup options, see page 25.)