Daktronics has released an industry white paper, "Digital Billboard Calibration," explaining the importance of calibration for digital billboards.
The white paper can be found at daktronics.com.
In addition, to help customers better understand Daktronics' remote field calibration process, view an educational video at: daktronics.com/bbvideo.
All LEDs, including those used in digital billboards, gradually degrade over time, slowly losing some of their original brightness and uniformity.