The jumpers for the boards are as follows:

jumper 1 2 3 4 line 1 x 2 x 3 x x 4 x 5 x x 6 x x 7 x x x 8 x

These are all from the second set of jumpers. The top set should be left alone.

Originally posted 30 Nov 2000 by Fred Patton

To clarify:

Dip switch one controls the data input settings. There are also small jumpers nearby that tell the display whether or not it is "first" in line or a display later on in the string.

Dip switch one has 8 positions.


9600,n,8,1

1 off (off is down)

2 on (on is up)

3 off

4 off

5 off (turning 5 on starts self test)

6 off

7 off (self test A-Z) (on self test all dots rotate)

8 off

Dip Switch 2 controls the personality of the line. This Switch is read only on power on so you have to reboot sign if a change is made.
All switches are off (down) except:

Line one = 1 on (on up)

Line two = 2 on

Line three = 1 & 2 on

Line four = 3 on

Line five = 1 & 3 on

Line six = 2 & 3 on

Input to the displays

PC pin 5 ground = Display pin 1 & 4 jumped ground

Pc pin 3 transmit = Display pin 5 receive