Daktronics AF-3080-68-R,A User Manual

Galaxy® Outdoor 68 mm

Series AF-3080

Display Manual

ED-13620 Rev 0 16 September 2003

PO Box 5128 331 32nd Ave. Brookings, SD 57006
Tel [phone] or 877-605-1113 Fax [phone]
www.daktronics.com e-mail: [e-mail]

ED-13620
Product 1280
Rev 0 – 16 September 2003

DAKTRONICS, INC.

Copyright ã 2003

All rights reserved. While every precaution has been taken in the preparation of this manual,
the publisher assumes no responsibility for errors or omissions. No part of this book covered
by the copyrights hereon may be reproduced or copied in any form or by any means – graphic,
electronic, or mechanical, including photocopying, taping, or information storage and retrieval
systems – without written permission of the publisher.

®

is a registered trademark of Daktronics, Inc. All others are trademarks of their respective companies.

Galaxy

Table of Contents

i

Section 1: Introduction....................................................................................1-1

1.1 How to Use This Manual...........................................................................1-1

1.2 Network Concepts......................................................................................1-2

RS232 Network...................................................................................1-3

RS422 Network...................................................................................1-3

Modem Network.................................................................................1-3

Fiber Optic Network...........................................................................1-3

Radio Network....................................................................................1-3

1.3 Sign Overview ...........................................................................................1-3

1.4 Component Identification ..........................................................................1-4

1.5 Daktronics Nomenclature ..........................................................................1-7

Section 2: Mechanical Installation .................................................................2-1

2.1 Mechanical Installation Overview .............................................................2-1

2.2 Support Structure Design...........................................................................2-1

2.3 Ventilation Requirements ..........................................................................2-2

2.4 Lifting the Sign..........................................................................................2-2

2.5 Sign Mounting ...........................................................................................2-3

2.6 Optional Temperature Sensor Mounting....................................................2-4

Section 3: Electrical Installation.....................................................................3-1

3.1 Common Connectors in the Sign...............................................................3-1

3.2 Control Cable Requirements......................................................................3-2

RS232 .................................................................................................3-2

RS422 .................................................................................................3-2

Modem................................................................................................3-3

Fiber Optic..........................................................................................3-3

Radio...................................................................................................3-3

3.3 RJ Connector Cables..................................................................................3-3

Installing an RJ Connector..................................................................3-4

3.4 Conduit.......................................................................................................3-4

3.5 Preparing for Power/Signal Connection.....................................................3-4

3.6 Power.........................................................................................................3-5

Grounding...........................................................................................3-5

Power Installation............................................................................... 3-7

3.7 Main Disconnect........................................................................................3-8

3.8 Signal Termination from Computer to Sign...............................................3-9

RS232 .................................................................................................3-9

RS422 ...............................................................................................3-10

Table of Contents

Modem..............................................................................................3-11

i

Fiber Optic........................................................................................3-11

Venus® 1500 Radio Client................................................................3-12

3.9 Signal Termination Between Two (or More) Signs.................................3-14

RS422 Interconnection......................................................................3-14

Fiber Interconnection........................................................................3-15

3.10 Optional Temperature Sensor Electrical Installation ...............................3-15

3.11 Initial Operation.......................................................................................3-17

Section 4: Maintenance and Troubleshooting..............................................4-1

4.1 Maintenance and Troubleshooting Overview ............................................4-1

4.2 Recommended Tools List ..........................................................................4-1

4.3 Signal Summary.........................................................................................4-2

4.4 Power Summary.........................................................................................4-2

4.5 Display Access ...........................................................................................4-2

4.6 Service and Diagnostics.............................................................................4-3

Line Filter ...........................................................................................4-4

Modules, Display boards, and Drivers................................................4-4

Controller............................................................................................4-6

Modem................................................................................................4-8

Fiber Board.........................................................................................4-9

RS422 Surge Suppressor.....................................................................4-9

Power Supplies..................................................................................4-10

4.7 Optional Temperature Sensor Electrical Installation ...............................4-10

4.8 Ventilation Systems .................................................................................4-11

4.9 Thermostats..............................................................................................4-12

4.10 Sign Maintenance.....................................................................................4-12

4.11 Weather Stripping....................................................................................4-12

4.12 Troubleshooting.......................................................................................4-13

4.13 Initial Operation Information...................................................................4-14

4.14 Replacement Parts List.............................................................................4-15

4.15 Daktronics Exchange and Repair and Return Programs ..........................4-16

Appendix A: Reference Drawings..................................................................... A-1

Appendix B: Signal Converter........................................................................... B-1

i

Table of Contents

List of Figures

Figure 1: Drawing Label.........................................................................................................1-2

Figure 2: Controller................................................................................................................1-5

Figure 3: 68mm Amber Galaxy Module.................................................................................1-6

Figure 4: Signal Converter......................................................................................................1-7

Figure 5: Module Numbering Example – 24x80 Front...........................................................1-7

Figure 6: Module Numbering.................................................................................................1-7

Figure 7: Typical Label ..........................................................................................................1-8

Figure 8: Lifting the Sign .......................................................................................................2-2

Figure 9: Temperature Sensor Eave/Wall Mount...................................................................2-4

Figure 10: Temperature Sensor Mounting to Bottom of Display ...........................................2-4

Figure 11: Temperature Board/Temperature Sensor Enclosure..............................................2-5

Figure 12: Ribbon Cable Connector.......................................................................................3-1

Figure 13: Termination Block.................................................................................................3-1

Figure 14: Phoenix Connector................................................................................................3-1

Figure 15: Mate-n-Loc Connector..........................................................................................3-2

Figure 16: Fiber Optic Cable..................................................................................................3-2

Figure 17: RJ11 Connector.....................................................................................................3-2

Figure 18: 6-Conductor RJ11 Connector and Cable...............................................................3-3

Figure 19: Flipped Cable with RJ Connectors........................................................................3-3

Figure 20: Wire with Outer Jacket Stripped...........................................................................3-4

Figure 21: Grounding .............................................................................................................3-6

Figure 22: Installation with Ground and Neutral Conductor Provided...................................3-7

Figure 23: Installation with only Neutral Conductor Provided...............................................3-8

Figure 24: J-Box to RS232 Input............................................................................................3-9

Figure 25: RS422 Layout......................................................................................................3-10

Figure 26: RS422 Connection to First Display.....................................................................3-10

Figure 27: Modem Layout....................................................................................................3-11

Figure 28: Fiber Optic Layout..............................................................................................3-11

Figure 29: Fiber Signal Converter to Fiber Board in Display...............................................3-12

Figure 30: Venus 1500 Radi o L ayout...................................................................................3-13

Figure 31: Controller Wire Connections...............................................................................3-13

List of Figures iii

Figure 32: Signal Termination Panels ..................................................................................3-14

Figure 33: Temperature Sensor Wiring to Two Displays.....................................................3-16

Figure 34: Power Termination Box........................................................................................ 4-4

Figure 35: Driver Board .........................................................................................................4-5

Figure 36: Driver to Module Configuration ...........................................................................4-5

Figure 37:Controller...............................................................................................................4-6

Figure 38: Modem Board .......................................................................................................4-8

Figure 39: Modem..................................................................................................................4-8

Figure 40: Fiber Board ...........................................................................................................4-9

Figure 41: Surge Suppressor, RS422......................................................................................4-9

Figure 42: Temperature Sensor Installation..........................................................................4-11

Figure 43: Signal Converters.................................................................................................B-1

iv List of Figures

Section 1: Introduction

1.1 How to Use This Manual

This manual explains the installation, maintenance and troubleshooting of the 68mm
AF-3080 Galaxy signs. For questions regarding the safety, installation, operation, or
service of this system, please refer to the telephone numbers listed on the cover page
of this manual.

Important Safeguards:

1. Read and understand these instructions before installing.

2. Properly ground the display with a ground rod for each face at the display
location.

3. Disconnect power when servicing the display.

4. Do not modify the display structure or attach any panels or coverings to the

display without the written consent of Daktronics, Inc.

The manual contains six sections: Introduction, Mechanical Installation, Electrical
Installation, Maintenance and Troubleshooting, Appendix A, and Appendix B.

• Introduction covers the basic information needed to make the most of the

rest of this manual. Take the time to read the entire introduction as it defines
terms and explains concepts used throughout the manual.

• Mechanical Installation provides general guidance on sign mounting.

• Electrical Installation offers general guidance on terminating power and

signal cable at the sign.

• Maintenance and Troubleshooting addresses such topics as removing

basic sign components, troubleshooting the sign, performing general
maintenance, and exchanging sign components.

• Appendix A includes the drawings referenced in this manual.

• Appendix B contains information on the signal converter.

Daktronics identifies manuals by an ED number located on the cover page of each
manual. For example, Daktronics refers to this manual as ED-13620.

Daktronics, commonly uses a number of drawing types, along with the information
that each provides. This manual might not contain all these drawings:

• System Riser Diagrams: Overall system layout from control computer to

sign, power, and phase requirements.

• Shop Drawings: Fan locations, mounting information, power and signal

entrance points, and access method (front and rear).

• Schematics: Power and signal wiring for various components.

• Display Assembly: Locations of critical internal sign components, such as

power supply assemblies, controller boards, thermostats, and light detectors.

Introduction

1-1

Figure 1 below illustrates Daktronics drawing label. The lower-right corner of the
drawing contains the drawing number. The manual identifies the drawings by listing
the last set of digits and the letter preceding them. In the example below, the manual
refers to the drawing as Drawing B-181287. Appendix A contains all of the
reference drawings.

Figure 1: Drawing Label

This manual shows all references to drawing numbers, appendices, figures, or other
manuals in bold typeface, as shown below.

“Refer to Drawing B-181287 in Appendix A for the power supply location.”

Additionally, the manual lists drawings referenced in a particular section at the
beginning of that section as seen in the following example:

Reference Drawing:

Shop Drawing; VF-****-27x75-18-W............................Drawing B-181287

Daktronics builds displays for long life and that require little maintenance. However,
from time to time, certain sign components need replacing. The Replacement Parts
List in Section 4.14 provides the names and numbers of components that you may
need to order during the life of the sign. Most sign components have a white label
that lists the part number. The component part number is in the following format:
0P-_ _ _ _-_ _ _ _ (component) 0A-_ _ _ _-_ _ _ _ (multi-component assembly).

Following the Replacement Parts List is the Daktronics Exchange and Repair
and Return Programs in Section 4.15. Refer to these instructions if any sign
component needs replacement or repair.

1.2 Network Concepts

The concept of using LED displays as a cost effective, high impact method of
communication is rapidly growing throughout many industries and businesses. The
reasons for this growth are many, but the need for additional features and the
complexity of multiple display installatio ns has emerged. Daktronics display systems
have been designed to meet those needs.

The common thread to most client requests is a means of programming and
controlling a group of displays from a central control point. Daktronics responded by
developing a powerful system of interconnecting and controlling displays. Great care
has been taken to design products that will satisfy a wide variety of installations.
Some of the design goals of these systems include the following:

• Easy transfer of me ssages

• The ability to tell a display or group of displays in the net work which

message should run

• The ability to determine the status of any display on the network

• The ability to control multiple display technologies on the same network

1-2

Introduction

Tools required for mounting the display depend on the location and size of the
display. For some installations, it may be possib le 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...............Draw in g A-1633 06

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

Refer to the drawings referenced above for the approximate size, weight, and power
requirements for your model of sign.

The following describes the Galaxy model numbers: AF-3080-RRxCCC-68-X-XF

AF-3080 =
RR =

Outdoor 68 mm Galaxy Sign
Number of Rows High

CCC =
68 =

X =
XF =

Number of Columns Wide
68 mm center-to-center spacing with 18" minimum

character height
LED Color (monochrome red or amber)

SF or DF (Single face or Double face)

A typical sign system consists of a Windows

â

Venus

1500 software and one or more signs. Daktronics offers the signs as single­face units, which are single-sided stand-alone signs. They can become double-faced
by mounting them back-to-back with a second unit.

The Venus

4.0, 2000, or XP Home/Professional operating systems on an IBM
computer. Refer to the Venus
and operation of the Venus

®

1500 is a software package that runs under Windows® 98, ME™, NT®

®

1500 operator's manual, ED-13530, for installation

®

1500 editing stations.

Refer to Section 4 for the summaries of how signal and power are routed thr ough the
displays.

1.4 Component Identification

The following illustrations and definitions 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 vary slightly from the
illustrations below.

This is only a brief overview. Refer to Section 4 for detailed information on
maintaining and troubleshooting various sign components.

Com Port: Connector on the back of the control computer. The COM port controls
the sign through either a 9- or a 25-pin serial connector.

â

based personal computer (PC) running

®

-compatible

1-4

Introduction

Controller: The “brains” of the display. The controller receives, translates, and
activates the signal information from the control computer to the appropriate pixels
on the display accordingly.

Figure 2: Controller

Display Address: The display address is an identification number assigned to each
display of a network. The address is set using 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.

Driver: Circuit board responsible for switching the intensity levels of the LEDs. The
driver is located inside the driver box and mounts on the back of the modules.

Fiber Optic: Technology that uses glass (or plastic) threads (fibers) to transmit data
from the controller to the display. A fiber optic cable consists of a bundle of glass
threads, each of which transmits messages modulated onto light waves.

Galaxy

®

: Daktronics trademarked name for LED monochrome or tri-colored matrix

signs.

Jumper: A jumper is a metal bridge that closes an electrical circuit. In most cases, it
consists of a black plastic plug (with metal wires inside) that fits over a pair of
protruding pins. By placing the jumper over a set of pins, the user can change the
board’s parameters.

Latch Access Fastener: Device utilizing a rotating retainer bar to hold the module
firmly to the sign frame. There are two per module: one near the top center of the
module and another on the bottom center.

LED (light emitting diode): Low energy, high intensity lighting units .

Louver: Black shade positioned horizontally above each pixel row. The louvers

increase the level of contrast on the sign face and direct LED light.

Introduction

1-5

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.

1-6

Introduction

Signal Converter: The signal converter is a
Daktronics supplied unit that converts the
data from RS232 to RS422, or RS232 to fiber
optic signal. The signal converter is
connected to the control PC via straight
through serial cable.

®

Venus

1500: Daktronics designed,

Windows based software used to create and
edit messages on the display. Refer to ED-
13530 for more information.

1.5 Daktronics Nomenclature

Figure 4: Signal Converter

Figure 5: Module Numbering Example – 24x80 Front

To fully understand some Daktronics drawings, such
as schematics, it is necessary to know how those
drawings label various components. This information
is also useful when trying to communicate
maintenance or troubleshooting efforts.

A module is the building block of the Galaxy sign.
Each module measures 4 pixels high by 4 pixels wide.
By placing modules side-by-side and on top of one
another, Daktronics can design and build signs of any
size. A person can easily remove individual modules

Figure 6: Module Numbering

from the sign if required. Figure 5 above illustrates
how Daktronics numbers modules on a Galaxy sign.
Figure 6 on the right breaks down the module
numbering me t ho d.

In addition, various Daktronics drawings may contain the following labeling formats:

• “TB_ _” represents a termination block for power or signal cable

• “F_ _” denotes a fuse

• “E_ _” signifies a grounding point

• “J_ _” indicates a power or signal jack

• “P_ _” shows a power or signal plug for the opposite jack

Introduction

1-7

Finally, drawings commonly have Daktr onics part numbers. You can use those p art
numbers when requesting replacement parts from Daktronics Customer Service.
Take note of the following part number formats:

• “0P-_ _ _ _-_ _ _ _” denotes an individual circuit board, such as a line

receiver.

• “0A-_ _ _ _-_ _ _ _” indicates an assembly, such as a circuit board and the

plate or bracket to which it mounts. A collection of circuit boards working
as a single unit may also carry an assembly label.

• “W-_ _ _ _” represents a wire or cable. Cables may also carry the assembly

numbering format in certain circumstances. This is especially true of ribbon
cables.

• “F-_ _ _ _"stands for a fuse.

Most circuit boards and components within this sign carry a label that lists the part
number of the unit. If the Replacement Parts List in Section 4.12 does not list a
circuit board or assembly, use the label to order a replacement. Figure 7 below
illustrates a typical label. The part number is in bold.

Figure 7: Typical Label

1-8

Introduction

Section 2: Mechanical Installation

Note: Daktronics does not guarantee the warranty in situations where the sign is not
constantly in a stable environment.

Daktronics engineering staff must a pprove any changes that may affect the weather-tightness
of the sign. If you make any modifications, you must submit detailed drawings of the changes
to Daktronics for eval uation and approval, or you may void t he warranty.

Daktronics is not responsible for installations or the structural integrity of support
structures done by others. The customer is responsible to ensure a qualified structural

engineer approves the structure and any additional hardware.

2.1 Mechanical Installation Overview

Because every installation site is unique, Daktronics has no single procedure for
mounting Galaxy signs. This section c ontains gener al information only and may or
may not be appropriate for your particular installation.

A qualified installer must make all decisions regarding the mounting of this
sign.

Read both the mechanical and electrical installation sections of this manual
before beginning any installation procedures.

2.2 Support Structure Design

Support structure design depends on the mounting methods, sign size, and weight.
The structure design is critical; only a qualified individual should mount the sign.
Sign height and wind loading are also critical factors. It is the customer’s
responsibility to ensure that the structure and mounting hardware are adequate.

Daktronics is not responsible for the installations or the structural integrity of
support structures done by others.

The installer is responsible to ensure the mounting structure and hardware are
capable of supporting the sign and agrees w ith local codes.

Before beginning the installation process, verify the following:

• The mounting structure provides a straight and square frame for the sign.

• The mounting structure supports the sign without yielding at any

unsupported points after mounting.

• Clearance: 3 " of unobstructed space is available below the sign for

ventilation. 1¼" of unobstructed space is available above the top of the sign.

Correct any deficiencies before installation.

Mechanical Installation

2-1

2.3 Ventilation Requirements

Reference Drawings:

Shop Drawing; AF-3080-24x***-68B............................ Drawing B-163291

Shop Drawing; AF-3080-8/16x***-68B......................... Drawing B-163293

Fans, mounted in the back sheets toward the top of the display, allow for ventilation.
Maintain a minimum distance of 3" (7.62 cm) below the sign to maintain proper
airflow. Refer to the appropriate Shop Drawing for additional information.

If the sign cabinet is completely enclosed:

• Provide 6 square inches of unobstructed opening per module to ensure

adequate cooling.

• Make allowances to compensate for the percentage of material covering the

openings in the structure.

• For adequate cooling, the cabinet may require forced ventilation. If the

enclosed cabinet must use forced ventilation, it must ventilate at a rate of 10
cubic feet per minute per module (10.64" x 10.64" active area).

Failure to comply with these requirements voids the Galaxy sign warranty.

2.4 Lifting the Sign

The top of the sign has eyebolts to lift the unit. Do not exceed the rated load of the
eyebolts. Refer to the information at the end of this sectio n labeled Eyebolts to
determine the allowable load of the eyebolts shipped with the sign.

Figure 8 on the right illustrates both the correct (left example) and the incorrect
(right example) method of lifting a sign. Lift the sign as shown on the left, with the
lifting bar. Use every lifting point provided.

Do not attempt to
permanently support the
sign by the eyebolts.

If you remove the eyebolts,
adequately seal the holes
using 13 bolts and sealing
washers, ½ inch i n siz e. Be
sure to silicone along the
threads to ensure water does
not enter the sign.

Figure 8: Lifting the Sign

2-2

Mechanical Installation

2.5 Sign Mounting

Reference Drawings:

Shop Drawing; AF-3080-24x***-68B............................Drawing B-163291

Shop Drawing; AF-3080-8/16x***-68B.........................Drawing B-163293

The method used to mount signs varies greatly fro m location to location. For this
reason, the manual covers only general mounting topics.

The installer is responsible to ensure the installation will adequately meet local
codes and standards. The installer is also responsible for the mounting method
and hardware.

Before beginning the installation process, verify the following items:

• The mounting structure will provide a straight and square frame for the

sign. Height variation in any four-foot horizontal section may not exceed ¼­inch.

• The mounting structure will not give way at any unsupported points after

the sign is mounted.

The back of the sign uses 2x2x1/4" steel clip angles at the locations shown in
Drawing B-163291 and Drawing B-163293 These angles assist in mounting the
sign. Remember to have all mounted signs inspected by a qualified structural
engineer.

The customer must have a qualified structural engineer review the number of
attachment points needed and the wall structure to ensure both meet all national and
local codes. Daktronics recommends using all clip angles as attachment points.

1. Carefully uncrate the sign. Look each side of the sign over for damage

during shipping.

2. Following the guidelines described in Section 2.4 , lift the sign into p osition

on the support structure using all provided eyebolts.

3. Weld or use ½" Grade-5 bolts and hardware to secure the clip angles to the
support structure as shown in Top View in Drawing B-163291 and

Drawing B-163293.

4. Refer to Section 3 for information on routing power and signal.

5. Upon completing the installation, carefully inspect the sign for any holes

that may allow water to seep into the sign. Seal any openings with silicone.
If you remove the eyebolts on the top of the sign, plug the holes with bolts
and the rubber sealing washers that you removed with the eyebolts. Silicone
the threads on the bolts.

Mechanical Installation

2-3

2.6 Optional Temperature Sensor Mounting

The temperature sensor mounts separately and
requires a location away from the influence of
chimneys, air conditioners, vents, tar roofs,
concrete, and parking lots, which can cause
abnormal temperature fluctuations. Usually, a
separation of at least 20-30 feet horizontally
and 8 feet vertically is required to achieve this.
Locations where air movement is restricted are
also unsatisfactory. Refer to Drawing
A-79767.

The ideal sensor location is a north eaves or a
northern exposure, above grass and away from
direct sunlight. This location gives extra
stability and accuracy to the sensor because of
the added shading usually obtained on a
northern exposure. See Figure 9 on the right
for details.

The second choice for locating a temperature sensor is on the display itself, or
somewhere on the display structure. A light-colored display is preferred in this
application. Location of the sensor should be above, below, or on a northern edge of
the display to keep the sensor shaded. If mounting above the display, a minimum
height of 6 feet is required. If mounting below the display, a minimum of 8 feet
above ground and a minimum of 1 foot between the sensor and the display are
required, as seen in Figure 10 below.

Greater accuracy is obtained if grass is below the sign rather than concrete or some
other material.

Figure 9: Temperature Sensor Eave/Wall Mount

2-4

Figure 10: Temperature Sensor Mounting to Bottom of Display

Mechanical Installation

Use a two pair, individually shielded cable (Belden 5594, Daktronics part number
W-1234) to connect the sensor to the display controller. Maximum length is 1000
feet.

Follow these steps to mount the temperature sensor:

1. Run ½" conduit from the sensor location to the controller where the sensor
cable is to be attached. The cable must be routed through ½" metal conduit,
which should be earth grounded to protect the sensor and controller from
lightning damage.

2. Power down the controller when the sensor cable is being attached.

3. Connect the cable to the temperature sensor terminal block as shown below.
Refer to Drawing A-79410 for the location of the terminals.

Figure 11: Temperature Board/Temperature Sensor Enclosure

4. Install the mesh screen with the four screws enclosed.

5. Connect the cable to the display controller as described in the controller

installation manual. Start operation of the controller.

Mechanical Installation

GRN =
WHT =
RED =

BLK =

P
N

+V

GND

2-5

Eyebolts

Almost every display that leav es D ak tronics is equipped w ith ey ebolts for lifting the display . There are
two standard sizes of eyebolts: ½″ and A″.

Load Increase Factor: The load increases as the lift angle (θ) decreases. The allowable load on the
eyebolts also decreases with the lift angle due the bending stress on the eyebolts. In sum, the smaller
the angle between the cable and the top of the display, the lighter the sign must be to safely lift it. Do

NOT attempt to lift the display when the lift angle is less than 30 degrees.

Horizontal Load Angle

Angle Factor (L/H)

90 1.00
60 1.155 90 2600 2600 4000 4000
50 1.305 60 1500 1299 3300 2858
45 1.414 45 650 460 1000 707
30 2.00 30 520 260 800 400

θθθθ

½”

Line Weight/ Line Weight/

Load Anchor Load Anchor

A

A”

AA

ED7244 Copyright 1996-2001
Rev. 4 – 14 March 2001 Daktronics, Inc.

Min.

A B C D E No.

Wx Wy Wz

1/4 1 3/4 1-3/16 25/32 21 600 2,000 Blank 1/4-20 7/8 400 100 80
3/8 1-1/4 1 1-21/32 1-3/16 23 2,100 5,000 Blank 3/8-16 1-1/8 1,400 350 250

1/2 1-1/2 1-3/16 2-1/16 1-13/32 25 3,900 9,200 Blank 1/2-13 1-11/32 2,600 650 520

9/16 1-5/8 1-9/32 2-13/16 1-17/32 26 4,500 11,830 Blank 9/16-12 1-3/8 3,000 750 600

5/8 1-3/4 1-3/8 2-1/2 1-11/16 27 6,000 14,700 Blank 5/8-11 1-9/16 4,000 1,000 800

3/4 2 1-1/2 2-13/16 1-13/16 28 9,000 21,700 Blank 3/4-10 1-5/8 6,000 1,500 1,200
7/8 2-1/4 1-11/16 3-1/4 2-1/16 29 10,000 30,000 Blank 7/8-9 1-13/16 6,600 1,670 1,330
1 2-1/2 1-13/16 3-9/16 2-5/16 30 12,000 39,400 Blank 1-8 2-1/16 8,000 2,000 1,600
1-1/2 3-1/2 2-9/16 5-1/2 3-5/32 34 27,000 91,300 Blank 1-1/2-6 3 17,800 4,500 3,600

Proof

Load
(lbs.)

Min.

Break

Load
(lbs.)

Stocked

Min.

Eff.

Thrd.

Length

Line Loads

A. Do not use eyebolts on angular lifts unless absolutely necessary. For angular lifts, the shoulder pattern

eyebolt is preferred.

B. Load should always be applied to eyebolts in the plane of the eye, not at some angle to this plane.

C. Shoulder eyebolts must be properly seated (should bear firmly against the mating part), otherwise the

working loads must be reduced to those indicated for regular eyebolts. A washer or spacer may be
required to put the plane of the eye in the direction of the load when the shoulder is seated.

D. No load greater than the safe working load listed in the data table should be used.

E. To obtain the greatest strength from the eyebolt, it must fit reasonably tight in its mounting hole to prevent

accidental unscrewing due to twist of cable.

F. Eyebolts should never be painted or otherwise coated when used for lifting. Such coatings may cover

potential flaws in the eyebolt.

G. To attain the safe working loads listed for regular eyebolts, 90% of the thread length must be engaged.

Copyright 1996-2001 ED-7244
Daktronics, Inc. Rev. 4 – 14 March 2001

Section 3: Electrical Installation

Only a qualified individual should terminate power and signal cable within this
Daktronics sign.

The Daktronics engineering staff must approve any changes made to the sign. Before alter i ng
the sign, submit detailed drawings for the proposed modifications to the Daktronics
engineeri ng staff for e valuation a nd approval or you will render the warr anty null and void.

3.1 Common Connectors in the Sign

The power and signal connections in the signs use many different
types of connectors. Take special care when disengaging any
connector so as not to damage the connector, the cable, or the
circuit board.

When pulling a connector plug from a jack, do not pull on the wire
or cable; pull on the jack itself. Pulling on the wires may damage
the connector.

The following information presents some common connectors
encountered during sign installation and maintenance:

1. Ribbon Cable Connectors:
Figure 12 on the upper right illustrates a typical ribbon

connector. To disconnect the ribbon cable, push the metal
clips on the sides to unlock and remove the jack.

Before replacing a ribbon cable connector, spray it with
DeoxIT
may cause signal problems. In addition, apply a generous
amount of CaiLube

™

contact cleaner to remove any foreign matter that

™

protector paste in the plug before
inserting it into the jack. This paste protects both the plug
and the jack from corrosion.

2. Termination Blocks:

Termination blocks connect internal power and signal
wires to wires of the same type coming into the sign from
an external source. Most signal wires come with forked
connectors crimped to the ends of the wire. Power wires
need to have one-half inch of insulation stripped from the
end of the wire prior to termination. Tighten all screws
firmly to ensure a good electrical connection. Refer to the
right for Figure 13.

3. Phoenix

ä

-Style Connectors:

Phoenix-style connectors, usually green, allow for signal
termination on circuit boards. Refer to Figure 14 on the
right. Strip one-quarter inch of insulation from the wire
prior to termination. To remove a wire, turn the above
screw counter-clockwise to loosen the connectors grip on
the wire. To insert a wire, push the bare wire into the
connector and turn the above screw clockwise to lock the
wire into place.

Figure 12: Ribbon
Cable Connector

Figure 13: Termination
Block

Figure 14: Phoenix
Connector

Electrical Installation

3-1

4. Mate-n-Lok

ä

Connectors:

The white Mate-n-Lok connectors found in the signs
come in a variety of sizes. Figure 15 on the right
illustrates a five-pin Mate-n-Lok connector. To remove
the plug from the jack, squeeze the plastic locking clasps
on the side of the plug and pull it from the jack.

5. Fiber Optic Connectors:

A fiber optic cable has a “twist-on” connector at each
end. To remove the fiber plug, push it toward the board
and twist it counter-clockwise until you can pull the plug
from the jack. Figure 16 on the right shows this
connector.

6. Phone Jacks (RJ11 Connectors):
RJ connectors, as seen on the lower right in Figure
17, are similar to the telephone connectors found in

homes. In order to remove this plug from the jack,
depress the small clip on the underside of the plug.

Before replacing an RJ connector, spray it with DeoxIT
contact cleaner to remove any foreign matter that may
cause signal problems. In addition, apply a generous
amount of CaiLube

™

protector paste in the plug before
inserting it into the jack. This paste will protect both the
plug and the jack from corrosion.

3.2 Control Cable Requirements

Figure 15: Mate­n-Loc Connector

Figure 16: Fiber Optic Cable

™

Figure 17: RJ11
Connector

3-2

RS232

This cable is a 2-conductor shielded cable used to transmit an RS232 signal
(Daktronics part number W-1117). This shielded cable should not be subjected to
mechanical flexing after installation. This cable is not for direct burial and should be
routed in a dedicated, grounded metallic conduit at the base of the sign structure.
This cable has a maximum length of 25 feet.

RS422

This cable is a 6-conductor shielded cable used to transmit an RS422 signal
(Daktronics part number W-1210). This shielded cable consists of unpaired wires.
They should not be subjected to mechanical flexing after installation. This cable is
not for direct burial and should have one of the following routings:

• In dedicated metallic conduit

• Inside buildings-if cable is not in conduit, keep away from interface signals

With interface signals, (such as power conductors, intercom, etc.) typically a two­foot separation is required. The maximum length of an RS422 signal cable is 4,000
feet (1.22 km).

Electrical Installation

Modem

The modem option will use standard telephone cable routed through a conduit. The
local telephone company will need to assist in this installation.

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 switchboard
system.

Fiber Optic

This cable is a 4-fiber cable (Daktronics part number W-1376). Two fibers are used
for display communications and the other two are saved for spares. The cable may be
either direct burial or routed in conduit but should not be subjected to mechanical
flexing. The maximum length of a fiber optic cable is 2,000 feet (611.6 meters).

Radio

The Server radio connected to the computer requires a six-conductor 18 AWG cable
to be wired from the J-box converter to the Outdoor Server. This wire needs to be in
conduit when exposed to outdoor conditions. The maximum distance from the J-box
to the Server radio is 1000 feet (611.6 meters).

The Client radio at the display comes with cable that is rated for outdoor use and
does not need to be in conduit.

3.3 RJ Connector Cables

The connector used for RS232 input to the display is
an industry standard, 6-pin RJ11. This connector can
be found on many telephones and LANs.

The cable used in the network is a standard flat six­conductor telephone cable (standard flipped cable).
Refer to Figure 18 on the right. This cable has one
end that is the mirror image of the other end (i.e., the
cable is flipped). Refer to Figure 19 below for a
standard flipped cable.

Notice in Figure 19, at the bottom, that the color code on one connector must be
made the opposite on the other connector. When installing a network, it is not easy to
remember in which direction the previous end was oriented. One simple way to
avoid confusion is to standardize the color code, having one color for the connector
going into the output of a sign, and the opposite color for a connector going into the
input of a sign. This will help ensure correct cabling since cables are always installed
from the output jack of one sign to the input jack of the next sign.

Figure 18: 6-Conductor RJ11 Connector and
Cable

Figure 19: Flipped Cable with RJ Connectors

Electrical Installation

3-3

Installing an RJ Connector

Installing an RJ connector on the end of the conductor cable is a
simple task when the correct tools are used. The RJ crimping tool
(Daktronics part number TH-1033) performs two separate steps.

First, use the crimping tool to strip the outer insulation from the
inner wires. This does not result in bare wires since only the gray
outer jacket is removed. After correct stripping, the wire will appear
as shown in Figure 20 on the right.

The crimping tool is then used to crimp the RJ connector onto the cable. The RJ
connector is locked into a special socket in the tool. The stripped wire is inserted into
the RJ connector. Finally, the tool is squeezed like pliers to crimp the connector onto
the wire. This completes the installation of an RJ connector onto the wire.

3.4 Conduit

Reference Drawings:

Shop Drawing; AF-3080-24x***-68B............................Drawing B-163291

Shop Drawing; AF-3080-8/16x***-68B.........................Drawing B-163293

Daktronics does not incl ude the cond uit. Refer to Shop Drawings for approximate
locations of power and signal conduit. Y ou must use separate cond uit to route:

• Power

• Signal IN wires

• Signal OUT wires (if another sign requires signal)

Locate the conduit holes at the bottom right (rear view) of the back of the sign (refer
to the Shop Drawings).

Punch or drill out the desired conduit openings. Be careful not to damage any
internal components. Attach the conduit, and route the power and signal cables.
Refer to Drawing B-163291and Drawing B-163293 for a picture of the power and
signal termination panels.

For signs with more than one face, signal and temperature sensor wiring between
signs can rout e through the same conduit .

Figure 20: Wire with Outer
Jacket Stripped

3.5 Preparing for Power/Signal Connection

Reference Drawings:

Schematic, Power Supply Configurations.................... Drawin g A-1639 51

Shop Drawing; AF-3080-24x***-68B............................ Drawing B-163291

Shop Drawing; AF-3080-8/16x***-68B......................... Drawing B-163293

Schematic, AF-3080-8x***-Mono.................................Drawing B-164924

Schematic, AF-3080-16x***-Mono...............................Drawing B-164926

Schematic, AF-3080-24x***-Mono...............................Drawing C-165267

Schematic, AF-3080-32x***-Mono...............................Drawing C-189404

If the display needs openings for the power and signal, punch out the knockouts in
the lower right corner from the rear. Refer to the Shop Drawings.

3-4

Electrical Installation

1. Locate the two hex head latch holes in the module. With a 1/8" hex-wrench,

apply pressure to the latch and turn each a quarter-turn. One will turn
clockwise and the counter-clockwise.

2. Route power to the display through a fused disconnect switch capable of

opening all ungrounded power conductors. Locate this disconnect within
the line-of-sight of any personnel performing maintenance on the display. If
the disconnect is located out of sight of the display, it must be capable of
being locked in the open position.

3. Power conductors fro m t he disconnec t to the displ ay must route t hrough

conduit in agreement with local codes.

4. You may also route the signal cable from the control computer to the sign at

this time. Run the power and signal cables in a separa t e conduit.

3.6 Power

Reference Drawings:

Power Specs, Amber, 8-24x48-112 Displays...............Draw in g A-1633 06

Power Specs, Red, 8-24x48-112 .................................Drawing A-163751

Schematic, Power Supply Configurations....................Drawin g A-1639 51

Schematic, AF-3080-8x***-Mono .................................Drawing B-164924

Schematic, AF-3080-16x***-Mono ...............................Drawing B-164926

Schematic, AF-3080-24x***-Mono ...............................Drawing C-165267

Schematic, AF-3080-32x***-Mono ...............................Drawing C-189404

Refer to drawings for vo l tage and current requirements for your sign size. Each uses
a 120/240VAC single-phase or 120/208 three-phase power source.

Do not connect the signs to any voltage other than that listed on the Daktronics
product label.

Proper power installation is imperative for proper display operation. The following
sub-sections give details of display power installation. Electrical installations must
be performed by qualified personnel. Unqualified personnel should not attempt to
install the electrical equipment. Serious danger to equipment and personnel could
occur if equipment is improperly installed.

Grounding

Displays must be grounded according to the provisions outlined in Article 250 of the
National Electrical Code
ohms or less. Verification of ground resistance can be performed by the electrical
contractor who is performing the electrical installation. Daktronics Sales and Service
personnel can also perform this service.

The display system must be connected to earth-ground. Proper grounding is
necessary for reliable equipment operation. It also protects the equipment from
damaging el ectrical disturbances and lightni ng. The display must be properly
grounded or the warranty will be void.

Electrical Installation

®

. Daktronics recommends a resistance to ground of 10

3-5

Figure 21: Grounding

A minimum of one grounding electrode must be installed for each display face. The
grounding electrode is typically one grounding rod for each display face. Other
grounding electrodes as described in Article 250 of the National Electric Code may
be used. Daktronics recommends that the resistance to ground be 10 ohms or less. If
the resistance to ground is higher than 10 ohms, it will be necessary to install
additional grounding electrodes to reduce the resistance. The grounding electrode
should be installed within 25 feet of the base of the display. The grounding electrode
must be connected to the ground terminal in the display panel board.

This grounding electrode must be installed in addition to the equipment-grounding
conductor that should be part of the power installation. The material of an earth­ground electrode differs from region to region and from conditions present at the
site. The support structure of the display cannot be used as an earth ground electrode.
The support is generally embedded in concrete, and if in earth, the steel is either
primed or it corrodes, making it a poor ground. The grounding system and grounding
electrodes must be installed according to Article 250 of the National Electrical Code
and any applicable local codes.

3-6

Electrical Installation