Daktronics AF-3150-20-R,A - Manual (Page 11)

1.5 Component Identification
The following illustrations depict some of the more commonly accessed Galaxy
®
display components. Because Daktronics occasionally alters standard design to meet
customer needs, the actual display design may vary slightly from the illustrations
below.
This is only a brief overview. Refer to Section 4 for additional information on
maintaining the various display components.
Com Port: A COM port is a connector on the back of the control computer. The
COM port is used to control the display network through either a 9- or a 25-pin serial
connector.
Controller: The display’s controller is the “brains” of the display (refer to
Figure 2
below). The controller receives, translates, and activates the signal information from
the control computer to the appropriate pixels on the display accordingly.
Figure 2: Version 3 Controller
Control Area Network: Serial Communication Protocol supporting distributed real-
time control and multiplexing. The temperature and light sensors use this type of
network.
Display Address: The display address is an identification number assigned to each
display of a network. Rotating the address switches on the controller sets the display
address. The control software uses the address to locate and communicate with each
display. Displays that are on the same network cannot have the same address.
Galaxy
® : Daktronics trademarked name for LED monochrome, tri-colored, or RGB
matrix displays.
Introduction
1-5