Daktronics Galaxy AF-3400 20 mm Monochrome/RGB Double-face Displays - Manual (Page 53)

Parts Replacement 45
Phone/Network Jacks (RJ11/RJ45 Connectors):
RJ connectors, as seen in Figure 50, are similar to the telephone
connectors or network jacks found in homes and businesses. These
jacks are used on the ends of RJ11 or RJ45 cable. In order to remove this
plug from the jack, depress the small clip on the underside of the plug.
Before replacing an RJ connector, spray it with DeoxIT ™ contact cleaner
to remove any foreign matter that may cause signal problems. In
addition, apply a generous amount of CaiLube
™ protector paste to the
plug before inserting it into the jack. This paste will protect both the
plug and the jack from corrosion.
Quick-connect Jack:
The display uses quick-connect jacks for the connection of the signal,
the temperature sensor and the connection to a mirror display. Three
input and one output quick-connect jacks are located on the back of
the primary display. When not in use, the attached dust cover should
be kept closed.
To attach the cable to a jack, match the configuration of wires in the
plug to the pattern in the jack. Push the plug in, then turn the outer
collar to lock it into place. Figure 51 illustrates the 6-pin quick-connect jack.
Fiber Optic Cable:
A fiber optic network transmits light (signal) through a glass fiber.
Because fiber optic cable is glass, the cable must never be bent. The cable
is usually a 4-fiber cable, with two fibers used for display
communications and the other two saved for spares (Figure 52).
8.4 Glossary
Controller: The “brains” of the display. The controller receives signal
communication from the computer and sends the appropriate information to
the modules. Messages and schedules may also be stored on the controller.
Display Address: An identification number assigned to each display of a network. The
control software uses the address to locate and communicate with each display. Displays that
are on the same network must have different addresses.
Driver/LED Board: The components of a module. The driver board is responsible for the
on/off and intensity levels of the LEDs.
Galaxy
® : Name given to Daktronics LED matrix displays that can be monochrome, tri-color,
or RGB.
LED (Light Emitting Diode): A low energy, high intensity lighting unit.
Figure 50: RJ11/RJ45
Figure 51: RS232/6-pin
Quick-connect Jack
Figure 52: Fiber
Optic Cable