Here are some functions essential for a modern control system

·       Control system must channel video signal utilizing most functions of LED drivers;

·       Control system must have a modular structure to utilize different hardware functions;

·       Control system must be coordinated with scheduling software to offer the best options in scheduling clips on a LED screen;

·       Control system must have flexible adjustment of colors and brightness;

·       Control system must allow flexible adjustment of LED screen geometry since similar modules can be arranged in LED screens of different shapes and sizes.

Monitoring of a LED screen

Control system must include functions of monitoring and feedback that includes:

·       Scheduler log that records what video clips were displayed on a LED screen;

·       Hardware log that records all defects and failures of the equipment. The more sophisticated the control system, the more detailed is this technical feedback;

·       Access log that records each entry into the system and each change in screen settings.

Electromagnetic compatibility (EMC) and electromagnetic interference (EMI) of LED screens

Large LED screen has many electronic components and is controlled via digitals system. This makes an LED screen similar to any electronic device when part of the consumed electrical power is emitted as electromagnetic radiation capable to induce electromagnetic interference (EMI).

This radiation results from high frequency switching of a very large number of components. Data and signals moving between PCBs generate radiation. An LED screen consists of many similar components – LED modules. The geometry of PCB layout multiplied dozens of times creates a gigantic antenna.

Electromagnetic interference (EMI) may interrupt, obstruct, or otherwise degrade the quality of radio and TV services or radio phones.

Minimizing the radio interference is the important task for developers of LED screens who understand in details all the intricacies of electronic design. This task may only be achieved by complex measures in developing electronic layouts, designing safe LED modules, controllers and wiring.