Daktronics AF-3080-68-R,A - Manual (Page 11)

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 with the displays.
There are five (5) network systems available: RS232, RS422, modem, fiber, and
radio. Up to 240 displays can exist one network.
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
length 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 ED-13348 for additional information.
1.3 Sign Overview
Reference Drawings:
Shop Drawing; AF-3080-24x***-68B ............................Drawing B-163291
Shop Drawing; AF-3080-8/16x***-68B .........................Drawing B-163293
Power Specs, Amber, 8-24x48-112 Displays...............Drawing A-163306
Power Specs, Red, 8-24x48-112 .................................Drawing A-163751
Daktronics designs and manufactures AF-3080 Galaxy signs for performance,
reliability, easy maintenance, and long life. The pixels have a 68 mm 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 sign ordered.
Introduction
1-3