I plan to build a video wall based on four 4K TVs.
For the moment, I have only one TV, but I want to be able to simulate the final installation using a 4 inputs - 1 output switcher, in 4K resolution.
The 4 signal sources are actually the 4 outputs of an nVidia Quadro RTX 5000 graphics card, whose connectors are in DisplayPort 1.4 female format.
On output this switcher must be connected to the 4K TV, whose input connector is in DisplayPort or HDMI format.
I want to be able to display successively one of the 4 outputs of the card on the TV, without the other outputs losing their settings.
This switcher must therefore be able to manage the screen emulation for the inputs so that the sources remain active even when they are not displayed.
In general, this feature is called EDID emulation / management, and it consists in maintaining a permanent negotiation between the switcher and the graphics card, in order to make it believe at all times that it is connected to 4 4K displays and that it thus keeps its display settings.
My question is simple:
Is it OK to use a simple low cost switcher such as this:
Do I need to use additional EDID emulator such as this:
Or should I use a professionnal (more expensive) switcher such as this:
Additionally, is it OK to use an HDMI switcher, since I can’t find a DP switcher with 4 inputs?
Should I use specific DP/HDMI adaptors?
I would be very grateful, if someone in the forum could give me some information that helps.
Thanks for your time and greetings from France.