Determining The Need For Edid Programming - AMX Optima Instruction Manual

Appendix E – EDID Programmer
The EDID Programmer software has been provided for cases where additional in-field programming of
the EDID chips is needed. The EDID Programmer can be used for the following:
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.
Keep in mind that the EDID information for some equipment may not be compatible with the remaining
equipment even with programming. In those cases, the signals will have limited routing options.
Tip: If the signal from some of the equipment can only be routed to part of the destinations due to
incompatible EDIDs, control for the system can be simplified by creating a separate virtual matrix
(level) for the inputs and outputs involved.
The remaining sections provide information on:

Determining the Need for EDID Programming

Ideally the EDID analysis will have been completed during installation specification. If this was not
possible but all of the system's devices are now available, the most effective way to proceed is to test if
the DVI or HDMI signal from each of the source devices can be routed through the Optima to each of the
destination devices. If they can, then EDID programming is not necessary.
Important: Do not route a source to all destination devices at the same time, unless you know that
the source will support all of the downstream sinks (see page 75). Otherwise, if the source does not
support all downstream sinks, the result will be that all of the destinations do not display an image.
The steps below use the CP-15 Control Panel to execute switches from each source device to all
destination devices. If you are using a different method of control, adjust accordingly.
To determine if EDID programming is necessary:
1.
Press the Function Key on the Control Panel.
2.
From the Function menu, press the Select Key to choose Change.
The available input and output keys turn blue.
3.
Press the input key for the first DVI or HDMI input.
The input key flashes white.
4.
Press all of the output keys for the DVI or HDMI signal. Each output key illuminates white as it is
pressed.
5.
Press the Take Key to execute the one-to-all switch.
The keys turn blue.
6.
Check each destination display to verify that the picture is present, making note of any that are not.
7.
HDMI connectors – we recommend clearing the connector's sink key cache (see page 83).
8. Repeat Steps 3 through 6 for each remaining DVI input or Steps 3 through 7 for HDMI inputs.
9. HDMI connectors – we recommend persisting the connector's empty sink key cache (see page 82).
156
Reading and saving EDID data in Hexadecimal from a device
Writing EDID data to the Optima input connector's associated EDID EEPROM
Determining the need for EDID programming
Installing the EDID Programmer
Reading and saving EDID data from a destination device
Writing EDID data to an Optima DVI or HDMI input connector
Additional HDMI EDID files for handling audio concerns
Optima Instruction Manual