Daktronics Galaxy AF-3165, Manual, Page: 17 / 85

Electrical Installation 13
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 requires two cables, a six-conductor flipped cable with
RJ11 connecters at each end for the signal, and a two-conductor shielded cable for the power. These
wires need to be in conduit out to the Server radio. The maximum distance from the RS-422 signal
converter to the Server radio is 2000 feet (611.6 meters).
The Client radio at the display comes with cable that is rated for outdoor use and does not need to be in
conduit.
3.3 RJ Connector Cables
The conductor connector used in the network
is an industry standard, 6-pin RJ11. This
connector can be found on many telephones
and LANs.
The cable used in the network is a standard
flat six-conductor telephone cable (standard
flipped cable). Refer to
Figure 13 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 14 on the following
page for a standard flipped cable.
Notice below in Figure 14 that the color code
on one connector must be made the opposite on the other connector. When installing a network, it is
not easy to remember in which direction the previous end was oriented. One simple way to avoid
confusion is to standardize the color code, having one color for the connector going into the output of a
sign and the opposite color for a connector going into the input of a sign. This will help ensure correct
cabling since cables are always installed from the
output jack of one sign to the input jack of the
next sign.
Figure 13: 6-Conductor RJ11 Connector and Cable
Figure 14: Flipped Cable with RJ Connectors