Daktronics AF-3020-7.6-R,A - Manual (Page 11)

1.6 Part Definitions
The following illustrations depict some of the more commonly accessed Galaxy sign components.
Because Daktronics occasionally alters standard design to meet customer needs, the actual sign design
may very slightly from the illustrations below.
This is only a brief overview. Refer to Section 4 for more detailed information on maintaining and
troubleshooting various sign components.
Column: Vertical group of pixels.
Com Port – Serial Port: Connector on the back of the controller PC. The Com Port is used to control
the sign network through either a DB9 or DB25-pin serial connector.
Controller Board: Controls the data for the entire display. It is located behind the bottom left
module.
Display Board: 16 row by 48-column array of pixels.
Display Configuration: Refers to a display’s model number, address, etc. This information will be
automatically displayed when the display is powered up.
Driver: Located on the back of the display board.
Driver Board: The LED pixels are mounted directly onto the driver/pixel board. This board is also
responsible for the switching and intensity levels of the LEDs.
Face Panel: Latching, hinged door that hinges downward, which the modules are mounted to.
Fiber Optic: Standard communication method using light (signal) transmitted through a glass fiber.
Fiber optic cable has a maximum length of 2,000 feet. A signal converter is required.
LED (Light Emitting Diode): Electrical component which creates a single point of light on the
display. There are 768 LEDs per module.
Modem: Uses standard telephone cable routed through conduit. Ask the telephone company which
colors are used by the TIP, and the RING for signal hook up. Note: The telephone lines must be
dedicated lines and not run through a switch board/communications system.
Module: Unit of the display that contains the LEDs, display board and driver board.
Network: Consists of multiple signs connected to each other. Up to 240 Venus 1500 controlled
displays can exist on one network.
Pixel: Single LED in the display.
RS/232: Standard PC communication type with a maximum cable length of 25 feet (8 meters).
RS/422: Standard differential communication type with a maximum cable length of 4000 feet (1.2
kilometers).
Row: Horizontal group of pixels.
Introduction 1-5