Daktronics AF-3180-64-R,A - Manual (Page 9)

Introduction
1-3
Tools required for mounting the display depend on the location and size of the
display. For some installations, it may be possible to use pre-terminated telephone
cables for use with the displays.
There are five (5) network systems available: RS232, RS422, modem, fiber, and
radio. One network system can operate up to 240 displays.
RS232 Network
RS232 (EIA/TIA-232-E) is a standard communication interface that employs a
single-ended serial transmission scheme that uses a maximum cable length of 8
meters (25 Feet). This interface was designed for computer communication at short
distances. Most computers have an RS232 communication port.
RS422 Network
RS422 (EIA/TIA-422-B) is a standard communication interface that utilizes a
differential balanced transmission scheme that uses a typical maximum cable length
of 1.2 km (approximately 4000 feet). The main advantage of RS422 over RS232 is
the longer cable length that is possible. A signal converter is needed to convert the
computer’s RS232 to RS422.
Modem Network
The modem is a standard communication interface that utilizes standard phone
transmission lines. The phone company assigns each phone line a number that the
modem uses to communicate between controller and display.
Fiber Optic Network
A fiber optic network is a standard communication method transmitting light (signal)
through a glass fiber. Fiber optic cable has a maximum length of 2,000 feet. A signal
converter is needed to convert the computer’s RS232 signal to fiber optic signal; a
minimum of two fibers is required.
Radio Network
The Radio network is a standard communication method that uses radio waves at
high frequencies to transmit signal. The Venus
®
1500 Radio network has a maximum
distance of 1500 feet. A nearly straight line-of-sight path must be maintained
between the Server Radio connected to the computer and the Client Radio connected
to the display. Refer to Section 3 and ED13932 for the additional information.
1.3 Sign Overview
Reference Drawings:
Power Specs, AF-3180, Amber LEDs ......................... Drawing A-192935
Power Specs AF-3180, Red LEDs............................... Drawing A-192937
Shop Drawings........................................................................ Appendix A
Daktronics designs and manufactures AF-3180 Galaxy
®
signs for performance,
reliability, easy maintenance, and long life. The pixels have a 64mm center-to-center
spacing and LEDs (light emitting diodes). Each sign section has minimum 18-inch
character height. An optional remotely mounted light sensor can automatically dim
the LEDs based on the ambient light levels. The configuration of pixels depends on
the model of display ordered.