Daktronics AF-3150-20-R,A - Manual (Page 23)

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:
• In dedicated metallic 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. The
local telephone company will need to assist in this installation.
Ask the telephone company which colors are used for the tip wire and which for the
ring wire for signal connections. Note: The telephone line to the display must be a
dedicated line 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 maximum length of a fiber optic cable is 2,000 feet (611.6 meters).
Radio
The Server radio, connected to the computer through a J-box, requires an 18-gauge
six-conductor cable (Daktronics part number W-1370). Four-conductors will be used
for the signal and two for power. This cable from the J-box to the Server radio, needs
to be in conduit when exposed to outdoor conditions. 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. The cable should be secured to the structure so it
cannot pulled loose from the display by weather or vandalism.
3.3 RJ Connector Cables
The conductor connector used in the
network is an industry standard, 6-pin
RJ11or 8-pin RJ45. This connector can
be found on many telephones and LANs.
Electrical Installation
3-3
Figure 15: 6-Conductor RJ11 Connector
and Cable
The cable used in the network is a
standard flat six-conductor telephone
cable (standard flipped cable). Refer to
Figure 15 on the right. This cable has one
end that is the mirror image of the other
end (i.e. the cable is flipped). Refer to
Figure 16 for a standard flipped cable.