Daktronics DF-2100 - Manual (Page 19)

Electrical Installation 11
3.3 Power Up Self-test
Every time the display is powered up, it will run through a verification sequence. This is a
good way to check that the displays are set up and working correctly. The following items
will be shown on the digit displays. The second column explains the significance of each
item.
Information shown
on display Meaning of information
rNN Revision number of software
XLY X = sign #; L is constant, Y = line #