Figure 27: modem display layout, Figure 28: modem/ signal connections – Daktronics AF-3150-20-R,A User Manual
Page 33

1. If using a quick connect cable, connect the phone wires to the modem
board, at J2, in a junction box. A quick connect cable will then go to the
RS232 top jack (J33) on the back of the primary display.
2. When connecting directly to the modem in the display, terminate the tip and
ring wires to TB2 on the modem board. If the phone company provided a
phone termination box for the tip and ring wires in the display, a straight
phone cable (Daktronics part number 0A-1137-0160) can be connected
from the box to the J5 Phone IN on the modem board in the display.
Drawing B-177662 and
shows the terminal block wiring.
3. For modems in the display, an 8-conductor cable with RJ45 connectors
(Daktronics part number 0A-1229-0054) relays the signal from J6 on the
modem to J3 (RS232 IN) on the controller.
Figure 27: Modem Display Layout
Note: The jumper on the controller board must be closed to recognize that a modem
is being used with the display. The jumper is recognized only on boot up.
Figure 28: Modem/ Signal Connections
Phone Line to Phone Termination Block
Field Cabling
Phone Line (TB2)
Red
Pin 1 (Tip)
Green
Pin 2 Ring)
Electrical Installation
3-13