ALGE has posted a nice utility for altering the configuration of D-line displays.

http://www.alge-timing.com/alge/download/software/D-Line_Configurator.exe

This requires a 145 cable to communicate between the PC and D-line.

Female amphenol connector on D-line
DB 9 female on PC

2- Ground - Pin 5 on DB 9
3- Pin 2 on DB 9
4 - (grd) Pin 3 on DB 9