Daktronics AF-3165-34-RGB - Manual (Page 23)

Electrical Installation
3-3
RS422
This cable is a 4-conductor shielded cable used to transmit an RS422 signal
(Daktronics part number W-1234). This shielded cable consists of paired wires. They
should not be subjected to mechanical flexing after installation. This cable is not for
direct burial and should have one of the following routings:
• Dedicated metallic conduit – power and signal cable cannot be run in the
same conduit
• Inside buildings
− if cable is not in conduit, keep away from interference
signals
With interference signals (such as power conductors, intercom, etc.) typically a two-
foot separation is required. The maximum length of an RS422 signal cable is 4,000
feet (1.22 km).
Modem
The modem option will use standard telephone cable routed through conduit. Power
and phone cable cannot be run in the same conduit. The local telephone company
will need to assist in this installation. Ask the telephone company which color is used
for the TIP wire and which color for the RING wire for signal hook up.
Note: The telephone lines must be dedicated lines and not run through a switch
board/communications system.
Fiber Optic
This cable is a 4-fiber cable (Daktronics part number W-1376). Two fibers are used
for display communications and the other two are saved for spares. The cable may be
either direct burial or routed in conduit but it should not be subjected to mechanical
flexing. The fiber can be routed in the same conduit as the power. The maximum
length of a fiber optic cable is 2,000 feet (611.6 meters).
Radio
The Server radio connected to the computer requires an 18-gauge six-conductor
cable (Daktronics part number W-1370). Four conductors will be used for the signal
and a two for the power. These wires need to be in conduit when exposed to outdoor
conditions to the Server radio. The maximum distance from the J-box to the Server
radio is 1000 feet (305.8 meters).
The Client radio at the display comes with cable that is rated for outdoor use and
does not need to be in conduit. Note: Secure excess cable to prevent it from being
pulled loose by weather or vandalism.