Daktronics Galaxy AF-3080 Series, Display Manual

Page: 14 / 107

Modem: This is the general term given to both the sending and receiving device.
The sending modem can be either internal or external to the computer. Another
modem must be used at the display to receive the signal and transfer it to the
display’s controller. Two jumpers will need to be used on the controller for it to
recognize the modem.
Module: The 68mm Galaxy modules are 4 pixels high by 4 pixels wide. They
consist of display boards and louvers in one unit. They are individually removable
from the display. One driver is used to controller each section of four modules.
Figure 3: 68mm Amber Galaxy Module
Network: Consists of multiple signs connected to each other.
Pixel:
Cluster of LEDs. The number and color of the LEDs depends on sign
application.
Power Supply:
Converts AC line voltage from the load center to low DC voltage for
one or more module driver boards.
RS232:
Standard PC communication type with a maximum cable length of 25 feet
(7.62 meters)
RS422: Standard differential communication type with a maximum cable length of
4000 feet (1.2 kilometers)
Sign Address: Identification number assigned to each display of a network. It is set
by flipping DIP switches on the controller. 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.
Introduction
1-6