AB Quality 2706-P4 Series Installation Instructions Manual page 17

16 InView Marquee Message Display
Publication 2706-IN006E-EN-P
1. GND
2. NC
3. RS-232 TX
4. RS-232 RX
Controller Board
P1 can be used for incoming RS-232 only, although it is optional
and not recommended.P1 is intended for RS-232 application
downloads and RS-485 terminating resistor connection. See
publication 2706-IN007 for more information on RS-485
termination.
9. Carefully close the front of the sign case and turn the
quarter-turn latches to the right with a large screwdriver.
TB1 - RS-232
5. NC
6. NC
7. NC
8. NC
TB1
1
2
3
4
5
6
7
8