LED 101 / Systems
Content and control
The wall only shows what you feed it. Scoreboard software, media players, Crestron or AMX, and the LED processor are part of the same job.
An LED wall is a blank canvas until something sends it a picture. On a school gym that is often PC scoreboard software with a deck or console for game clock and score, plus HDMI or network feeds for assemblies and video. On a restaurant or lobby it may be a media player looping playlists. On an outdoor sign it may be a BrightSign or similar player in a weather enclosure.
Between the source and the modules sits an LED processor (sending card / controller). It maps the wall, scales or passes video, and pushes data out Ethernet or fibre ports to the receive cards. Scaling controllers suit many 16:9 indoor walls. Non-scaling controllers are common when the aspect ratio is unusual or the job is a large outdoor array. Port capacity is limited; pixel math and wiring layout decide how many ports you need. See Wall size and resolution and Screen mapping in NovaLCT.
Room control (Crestron, AMX, and similar) should be able to select sources and power the wall down when the room is empty. Leaving a wall powered all night wastes life on the LEDs and the supplies. A relay sequencer or controlled mains feed that the AV system can switch is a practical addition on school and rec installs.
Ask who owns content day to day: athletics for games, communications for announcements, IT for network paths. The integrator should leave a simple operating path, not a pile of remotes that only the install crew understood on commissioning day.