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

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EDID Programmer
51 DGX Transmitters & Receivers Instruction Manual
EDID Programmer
Applicability
This chapter applies to both the DGX HD-15 TX and the DGX DVI TX modules and covers reading the
EDID from the destination device and writing the EDID to the TX.
Important:
Because the basic installation steps normally produce a satisfactory image, you will not
need the information in this chapter unless the installation has special requirements or in some
cases when a DGX TX is used in conjunction with a DGX matrix switcher.
EDID Programmer software is provided for in-field re-programming of the EDID EEPROM chips on the
DGX TX module if necessary.
Installation Scenario 4 – Automatic Image Adjustment Using Custom EDID
The flow chart in FIG. 36 shows the sequence when a custom EDID is read from the destination device
and written to a DGX TX.

To complete the “Basic Installation,” see page 29.

To install and use the EDID Programmer (available at www.amx.com ), see page 53.
EDID Overview
EDID (Extended Display Identification Data) is a data structure established by the Video Electronics
Standards Association (VESA) to enable plug-and-play support by enabling easy configuration of
a computer’s graphics subsystem based on the capabilities of the attached display device.
EDID information includes items such as the following:

Manufacturer’s name

Product type

Supported video resolutions and refresh rates

Color space and filter chromaticity

Detailed timings
When a computer is directly connected to a display device, it can use the display device’s EDID
information to determine an initial compatible video signal to send. With the computer’s display
controls, the user can modify this selection to another compatible signal based on the provided EDID
information.
FIG. 36
Installation procedure – Read and Write EDID using EDID Programmer
Attach
connectors
Apply power
TX
Connect cable
from PC to TX
Video Input
connector
Attach
connectors
Apply power
RX
Flip EDID switch to
W and use EDID
Programmer to
write EDID to TX;
flip switch to WP
Set A/B
Sync Set switch
Basic Installation
PC
Connect PC to
destination device
Open EDID
Programmer and
read EDID from
detected device
Read and Write EDID Procedure
DGX HD-15 TX only