Daktronics AF-3160-34-R,A - Manual (Page 31)

Modem
Reference Drawings:
System Riser Diagram, Modem ................................... Drawing A-174342
Schematic, Signal Wiring, Internal, W/Quick Connect. Drawing B-177662
A modem-controlled display requires the use of an internal or external modem at the
computer. The local phone company must provide a dedicated phone line to the
display and identify the colors used for the Tip wire and Ring wire. The phone cable
must be routed though conduit. Do not run signal and display power through the
same conduit. Refer to Drawing A-174342 and
Figure 27 for system layout.
1. If using a quick connect cable, the phone line will terminate to a junction
box at the display and then a quick connect cable will connect the phone
line to J32 on the back of the display. A 6-conductor phone cable with
RJ11 connectors (Daktronics part number 0A-1137-0160) relays data from
the quick connect input board to the modem.
2. When connecting directly to the modem in the display, terminate the phone
line to TB2 on the modem as shown in Figure 28 . If the phone company
provided a phone termination box in the display, a straight phone cable can
be connected from the box to the J5 Phone IN on the modem board.
Drawing B-177662 shows the terminal block wiring.
3. A straight through RJ45 cable (Daktronics part number 0A-1229-0054)
transfers data from J6 on the modem to J3 (RS232 IN) on the controller.
Note: The jumper X1 on the controller board must be closed while the display
powers up to recognize that a modem is being used with the display.
Figure 27: Modem Display Layout
Figure 28: Modem Phone Line Termination, Modem Jumper
Electrical Installation
3-13