Massachusetts D3 semifinals in Mass End of Regulation (Video)

[Camron Rust]

Originally Posted by Nevadaref

As I'm sure that you are aware, the numbers on the clock don't matter when there is a red light on or behind the backboard under NFHS rules. The light is the signal which ends the period when it is present.

Just pointing out that the two devices are not quite in sync.

Electrically speaking, a light, particularly if it is LED based, is faster to turn on than triggering the numbers on the clock. So, when the "0" signal is sent to the various clocks and the LED light, the LED light behind the board could appear before the clock shifts to 0.0....and it (the LED light) would be the accurate indicator. That is why it is the official indicator when present.