(21 Jun 2015, 5:17 pm)LeeCalder wrote and even more random stuff including a strange pattern of letters and numbers! I haven't the slightest clue why that was programmed in!

I believe this was the LED sign test. It tells you a number of different things; including the size of the destination display, the version of the destination software it is running, and the switch setting the display is set to.

Helpful to the likes of citaro5284 and I..!