Daktronics AF-3112-34-R,A User Manual
Galaxy® Series AF-3112
Primary - Mirror
Display Manual
ED-14212 Rev 0 19 January 2004
331 32nd Ave PO Box 5128 Brookings SD 57006
Tel 605-697-4034 or 877-605-1113 Fax 605-697-4444
www.daktronics.com e-mail: helpdesk@daktronics.com
Rev 0 – 19 January 2004
ED-14212
Product 1301
DAKTRONICS, INC.
Copyright © 2004
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
i
Table of Contents
Section 1: Introduction....................................................................................1-1
1.1 How to Use This Manual........................................................................... 1-1
1.2 Safety Precautions.....................................................................................1-2
1.3 Network Concepts.....................................................................................1-3
RS232 Network.................................................................................. 1-3
RS422 Network.................................................................................. 1-3
Modem Network.................................................................................1-3
Fiber Optic Network........................................................................... 1-3
Radio Network ................................................................................... 1-4
1.4 Display Overview......................................................................................1-4
1.5 Component Identification..........................................................................1-5
1.6 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 Display..................................................................................... 2-2
2.5 Display Mounting...................................................................................... 2-3
2.6 Optional Temperature Sensor Mounting...................................................2-3
Section 3: Electrical Installation.....................................................................3-1
3.1 Common Connectors in the Display.......................................................... 3-1
3.2 Control Cable Requirements......................................................................3-3
RS232................................................................................................. 3-3
RS422................................................................................................. 3-3
Modem ............................................................................................... 3-3
Fiber Optic.......................................................................................... 3-3
Radio .................................................................................................. 3-3
Display Enclosures............................................................................. 3-4
3.3 RJ Connector Cables ................................................................................. 3-4
3.4 Conduit...................................................................................................... 3-5
3.5 Preparing for Power/Signal Connection.................................................... 3-5
3.6 Power ......................................................................................................... 3-6
Power Requirements........................................................................... 3-6
Grounding........................................................................................... 3-6
Power Installation...............................................................................3-7
Power Connection ..............................................................................3-8
Main Disconnect.................................................................................3-8
3.7 Signal Termination from Network to Display........................................... 3-9
RS232................................................................................................. 3-9
RS422............................................................................................... 3-10
Modem ............................................................................................. 3-12
Fiber Optic........................................................................................ 3-13
Venus 1500 Radio ............................................................................ 3-14
3.8 Signal Termination Between Two (or More) Signs................................. 3-16
List Of Figures
RS422 Interconnection.....................................................................3-16
3.9 First Time Operation................................................................................3-16
Section 4: Maintenance and Troubleshooting ............................................. 4-1
4.1 Maintenance and Troubleshooting Overview............................................4-1
4.2 Signal Summary.........................................................................................4-2
4.3 Power Summary.........................................................................................4-2
4.4 Service and Diagnostics.............................................................................4-3
Transformer and RFI Filter.................................................................4-4
Controller............................................................................................4-5
Modules and Drivers ..........................................................................4-7
Power Supplies................................................................................... 4-8
Light Detector.....................................................................................4-8
Modem................................................................................................4-8
Fiber Board.........................................................................................4-9
RS422 Surge Suppressor..................................................................4-10
4.5 Ventilation Systems (With Fans and Filters)...........................................4-10
4.6 Thermostats ............................................................................................. 4-11
4.7 Weather Stripping....................................................................................4-11
4.8 Display Maintenance...............................................................................4-11
4.9 Troubleshooting.......................................................................................4-12
4.10 Initialization Operation Information........................................................4-13
4.11 Replacement Parts List............................................................................4-13
4.12 Daktronics Exchange and Repair and Return Programs..........................4-14
Appendix A: Reference Drawings .....................................................................A-1
Appendix B: Signal Converter ...........................................................................B-1
Appendix C: Temperature Sensor.....................................................................C-1
ii
List Of Figures
i
List of Figures
Figure 1: Drawing Label ...........................................................................................................1-2
Figure 2: Version 3 Controller ...................................................................................................1-5
Figure 3: 34mm Module.............................................................................................................1-6
Figure 4: RS232 to RS422 Signal Converter ................................................................................1-6
Figure 5: Numbering Example - 24x80 Front............................................................................... 1-7
Figure 6: Module Numbering.....................................................................................................1-7
Figure 7: Typical Label .............................................................................................................1-7
Figure 8: Lifting the Display (Correct, Left; Incorrect, Right)........................................................2-2
Figure 9: Ribbon Cable Connector .............................................................................................3-1
Figure 10: Termination Block.....................................................................................................3-1
Figure 11: Phoenix Connector...................................................................................................3-2
Figure 12: Mate-n-Lok Connector ..............................................................................................3-2
Figure 13: RJ11 Connector........................................................................................................3-2
Figure 14: Eight-Conductor Cable..............................................................................................3-4
Figure 15: Flipped Cable with RJ45 Connectors..........................................................................3-4
Figure 16: Use 5/32" Hex Wrench to Release Latches...................................................................3-5
Figure 17: Face Panel Latches...................................................................................................3-5
Figure 18: Primary Display with Enclosures................................................................................3-6
Figure 19: Ground Conductor....................................................................................................3-7
Figure 20: Installation with Ground and Neutral Conductors Provided..........................................3-8
Figure 21: RS232 Display Layout...............................................................................................3-9
Figure 22: RS232 Enclosure Connection ..................................................................................3-10
Figure 23: RS422 Display Layout.............................................................................................3-10
Figure 24: Signal Converter to Surge Board Assembly Enclosure................................................ 3-11
Figure 25: Modem Display Layout............................................................................................3-12
Figure 26: Modem Phone Line Termination Enclosure ...............................................................3-13
Figure 27: Fiber Display Layout...............................................................................................3-13
Figure 28: Signal Converter to Fiber Card Enclosure.................................................................3-14
Figure 29: Radio Display Layout .............................................................................................. 3-15
Figure 30: Client Radio Display Connection..............................................................................3-15
Figure 31: Quick Connect Boards (Input and Output).................................................................3-16
Figure 32: Display Interconnect............................................................................................... 3-16
Figure 33: Primary/Mirror Interconnect Board............................................................................4-2
Figure 34: General Display Component Layout ..........................................................................4-3
Figure 35: Power Termination Panel..........................................................................................4-4
Figure 36: Controller Component Layout................................................................................4-5
List Of Figures
ii
Figure 37: Removing a Module..................................................................................................4-7
Figure 38: Light Sensor In Display ............................................................................................4-8
Figure 39: Modem....................................................................................................................4-8
Figure 40: Modem Jumper Location ...........................................................................................4-9
Figure 41: Fiber Optic Board.....................................................................................................4-9
Figure 42: RS422 Surge Suppressor.........................................................................................4-10
iv
List Of Figures
Section 1: Introduction
1.1 How to Use This Manual
This manual explains the installation, maintenance, and troubleshooting of a
Daktronics Galaxy
®
AF-3112 34mm louvered LED Primary-Mirror display. 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.
The manual is divided into seven sections: Introduction, Mechanical Installation,
ectrical Installation, Maintenance and Tro ubl eshooting, Appendix A, Appen dix B ,
El
and Appendix C.
• Introduction covers the basic information needed to make the most of the
remainder of this manual. Take time to read the entire introduction as it
defines terms and explains concepts used throughout the manual.
• Mechanical Installati o n pr ov i des general guidance on display mounting.
• Electrical Installation gives general guidance on terminating power and
signal cable at the display.
• Maintenance and Trou bl eshooting addresses such things as removing
basic display components, troubleshooting the display, performing general
maintenance, and exchanging display components.
• Appendix A lists the drawings referenced within this manual.
• Appendix B provided information on the signal converter.
• Appendix C provided information on the optional temperature sensor.
Daktronics identifies manuals by an ED number located on the cover page of each
anual. For example, this manual would be referred to as ED-14212.
m
Listed below are a number of drawing types commonly used by Daktronics, along
the information that each is likely to provide. This manual might not contain all
with
these drawings.
• System Riser Diagrams: Overall system layout from control computer to
display, 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.
• Component Placement Diagrams: Locations of critical internal display
components, such as power supply assemblies, controller boards,
thermostats, and light detectors.
Introduction
1-1
Figure 1 below illustrates the Daktronics drawing label. The drawing number is
located in the lower-right corner of the drawing. Listing the last set of digits and the
letter preceding them identifies drawings in the manual. In the example below, the
drawing would be referred to as Drawing B-181287. Reference drawings are
inserted in Appendix A.
Figure 1: Drawing Label
All references to drawing numbers, appendices, figures, or other manuals are
presented in bold typeface, as shown below.
“Refer to Drawing B-181287 in Appendix A for the power supply location.”
Additionally, drawings referenced in a particular section are listed at the beginning
of that section as seen in the following example:
Reference Drawing:
Shop Drawing; VF-****-27x75-18-W............................ Drawing B-181287
Daktronics displays are built for long life and require little maintenance. However,
from time to time, certain display components will need replacing. The
Replacement Parts List in Section 4.11 provides the names and numbers of
components that may need to be ordered during the life of the display. Most display
components have a white label that lists the part number. The component part
number is in the following format: 0P-_ _ _ _-_ _ _ _ (component) or
0A-_ _ _ _-_ _ _ _ multi-component assembly).
Following the Replacement Parts List is the Daktronics Exchange and Repair
and Return Programs in Section 4.12. Refer to these instructions if any display
component needs replacement or repair.
1.2 Safety Precautions
Important Safeguards:
1. Read and understand these instructions before installing.
2. Be sure the display and other exterior enclosures are properly grounded
with an earth ground electrode at the display.
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.
1-2
Introduction
1.3 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
need for additional features and the complexity of multiple display installatio ns has
emerged. Daktronics display system s have been desi g ne d to m eet those n eeds.
The common thread to most client requests is a means of programming and
ntrolling a group of displays from a central control point. Daktronics responded by
co
developing a powerful system of interconnecting and controlling displays.
Daktronics designs products with great care that satisfy a wide variety of
installations. Some of the design goals of these systems include the following:
• Easy transfer of messages
• The ability to tell a display or group of displays in the network 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
There are five (5) network systems available: RS232, RS422, Modem, Fiber Optic,
Radio. Up to 240 displays can exist on one network.
and
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 7.6
meters (approximately 25 feet). This interface was designed for computer
communication at short distances. All computers have an RS232 communications
port. Refer to Section 3 for additional information.
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 1.2km (approximately 4,000 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. Refer to Section 3 for more information.
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. Each modem network
needs to have a dedicated phone line assigned to it. Refer to Section 3 for additional
information.
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 600 meters
(approximately 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. Refer to
Section 3 for additional information.
Introduction
1-3
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 450 meters (approximately 1,500 feet) outdoor and 150 meters
(approximately 500) indoor. 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 the Venus 1500 Radio manual, E D-13932, for
additional information.
1.4 Display Overview
Reference Drawing:
Shop Drawing, AF-3112-2480-34-SF-*
Shop Drawing, AF-3112-1680-34-SF-*
Daktronics AF-3112 Galaxy
performance, reliability, easy maintenance, and long life. The pixels have a 34mm
center-to-center spacing and are illuminated using LEDs (light-emitting diodes). A
light sensor on the front of the display is used for automatic dimming of the LEDs
based on the ambient light levels. The configuration of pixels depends on the model
of display ordered.
Refer to D
rawing A-193720 or A-201993 for the approximate size, weight, and
power requirements for your display.
The Galaxy
®
model numbers are described as follows:
AF-3112-RRxCCC-34-X-X(X)
AF-3112 =
RR =
CCC =
34 =
R =
XX =
A typical display system consists of a Windows
running Venus
®
1500 software and one or more displays. The displays are offered as
single-face units, which are single-sided stand-alone displays. They can become
double-faced by mounting them back-to- back with a second unit.
®
Venus
1500 is a software package that runs under Windows® 98, ME™, NT® 4.0,
2000, or XP Home/Professional operating systems on an IBM
computer. Refer to the Venus
and operation of the Venus
®
displays are designed and manufactured for
Outdoor 34mm Louvered Galaxy® Display
Number of Pixel Rows High (8-32)
Number of Pixel Columns Long (32-112)
Monochrome Red or Amber LED Color
PM - Primary-Mirror and M – Mirror
®
1500 operator’s manual (ED-13530) for installation
®
1500 editing station.
-P/M................ Drawing A-193720
-P/M................ Drawing A-201993
34mm pixel to pixel spacing
®
based personal computer (PC)
®
-compatible
1-4
Introduction
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.
Controller: The display’s controller is the “brains” of the display (refer to
below). The controller receives, translates, and activates the signal information from
the control computer to the appropriate pixels on the display accordingly.
Figure 2
Figure 2: Version 3 Controller
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.
Driver/Pixel Board: The LED pixels are mounted directly onto the driver/pixel
board. This board is also responsible for the switching and intensity levels of the
LEDs.
Galaxy
matrix displays.
LED (light emitting diode): Low energy, high intensity lighting units.
Louver: Black plastic shade positioned horizontally above each pixel row. The
louvers increase the level of contrast on the display face and direct LED light. The
louvers are attached to the Plexiglas face on the door of the display.
Introduction
®
: Daktronics trademarked name for LED monochrome, tri-colored, or RGB
1-5
Mirror: The second display in a Primary-Mirror configuration that does not have a
controller. All signal information to the display is received though a signal interconnect cable.
Module: 34mm Galaxy
®
modules are 8 pixels high by 16 pixels wide. Each is
individually removable from the inside of the door of the display. The module for the
AF-3112 is one unit with both the LEDs and the driver making up one module. Ref er
Figure 3 below.
to
Figure 3: 34mm Module
Network: A network consists of multiple displays connected to each other. Up to
240 displays can exist on one network.
Pixel: There are two LEDs per pixel. The number and color of the LED s depend on
display application.
Power Supply: Converts AC line voltage from the load center to low DC voltage for
one or more module driver boards.
Primary: The first display in a Primary-Mirror or Primary-Secondary configuration.
The communication inputs and the light sensor will be connected to this display.
Router: This device forwards data packets along networks and provides additional
security.
RS232: RS232 is a standard PC communication type with a
maximum cable length of 25 feet (7.6 meters)
RS422: RS422 is a standard differential communication
type with a maximum cable length of 4000 feet (1.2
kilometers).
Signal Converter: The signal converter, shown in Figure 4
on the right, 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
software used to create and edit messages on the display.
®
based
Figure 4: RS232 to RS422 Signal
Converter
Refer to ED-13530 for the operation manual.
1-6
Introduction
1.6 Daktronics Nomenclature
Figure 5: Numbering Example - 24x80 Front
To fully understand some Daktronics drawings, such as schematics, it is necessary to
know how various components are labeled in those drawings. This information is
also useful when trying to communicate maintenance or troubleshooting efforts.
A module is the building block of the
®
Galaxy
display. Each module measures 8
pixels high by 16 pixels wide. By placing
modules side-by-side and on top of one
another, a display of any size can be
designed and built. Individual modules can
be easily removed from the display if
required.
Daktronics numbers modules on a Galaxy
display.
Figure 5 above illustrates how
Figure 6 on the right demonstrates
®
Figure 6: Module Numbering
the module numbering method.
In addition, the following labeling formats might be found on various Daktronics
drawings:
• “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_ _” identifies a power or signal plug for the opposite jack.
Finally, Daktronics part numbers are commonly found on drawings. Those part
numbers can be used when requesting replacement parts from Daktronics Customer
Service. Take note of the following part number formats:
• “0P-_ _ _ _-_ _ _ _” shows an individual circuit
board, such as the internal fiberboard.
• “0A-_ _ _ _-_ _ _ _” indicates an assembly,
such as a circuit board and the plate or bracket
to which it is mounted. A collection of circuit
boards working as a single unit may also carry
0P-1195-0001
SN: 6343
05/19/99 REV.1
Figure 7: Typical Label
an assembly label.
Introduction
1-7
• “W-_ _ _ _” represents a wire or cable. Cables may also carry the assembly
numbering format in certain circumstances. This is especially true of ribbon
cables.
Most circuit boards and components within this display carry a label that lists the
art number of the unit. If a circuit board or assembly is not listed in the
p
Replacement Parts List in Section 4, use the label to order a replacement. A typical
label is shown in
Figure 7. The part number is in bold.
1-8
Introduction
Section 2: Mechanical Installation
Note: Daktronics does not guarantee the warranty in situations where the display is not
constantly in a stable environment.
Daktronics engineering staff must approve an
of the display. If any modifications are made, detailed drawings of the changes must be
submitted to Daktronics for evaluation and approval, or the warranty may be void.
Daktronics is not responsible for installations or the structural integrity of support
tures done by others. It is the customer’s responsibility to ensure that a qualified
struc
structural engineer has approved the structure and any additional hardware.
2.1 Mechanical Installation Overview
y changes that may affect the weather-tightness
Because every installation site is unique, there is no single Daktronics-approved
procedure for mounting the Galaxy
section is general information only and may or may not be appropriate for your
particular installation.
A qualified individual must make all decis
display.
Read both the mechanical and electrical installati
before beginning any installation procedures.
®
displays. The information contained in this
2.2 Support Structure Design
Support structure design depends on the mounting methods, display size, and weight.
The structure design is critical and should be done only by a qualified individual.
Display 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 inte gri t y of
support structures done by others.
It is the installer’s responsibility to
hardware are capable of supporting the display, and will agree with local codes.
Before beginning the installation proces s, verify the following:
• The mounting structure will provide a straight and square-mounting frame
for the display.
• The mounting structure is capable of supporting the display and will not
yield at any unsupported points after mounting.
• Clearance:
• 3" of unobstructed space below the display for adequate ventilation.
• 2 3/8" of unobstructed space is available above the display to allow
door to hinge open.
• 3” of unobstructed space behind display for adequate ventilation.
Correct any deficiencies b
efore installation.
ensure the mounting structure and
ions regarding the mounting of this
on sections of this manual
Mechanical Installation
2-1
There are nutserts provided on the back of the display for mounting of the display to
a structure. Use all the provided mounting nutserts when mounting the display.
If a mounting kit was ordered with the display, mount the channel to the display
using the nutserts on the back of the display.
2.3 Ventilation Requirements
Reference Drawing:
Shop Drawing, AF-3112-2480-34-SF-*-P/M................ Drawing A-193720
Shop Drawing, AF-3112-1680-34-SF-*-P/M................ Drawing A-201993
For ventilation, fans are mounted in the back of the display. Maintain a minimum
distance of 3" (7.62cm) below the display to maintain proper airflow to the
ventilation inlets. Refer to Drawing A-193720 or A-201993 for your display size for
additional information.
If the display cabinet is completely enclosed:
• 13 square inches of unobstructed opening per module must be provided to
ensure adequate cooling.
• Allowances must be made to compensate for the percentage of material
covering the openings in the structure.
• For adequate cooling, forced ventilation may be required. If air is forced
into the enclosed structure, a minimum of 200 cfm is required for both inlet
and exhaust.
If these requirements are not met, the Galaxy
®
display warranty may be void.
2.4 Lifting the Display
The top of larger displays is equipped with eyebolts that are used to lift the unit.
Take special care to ensure that the rated load of the eyebolts is not exceeded. Refer
to the information at the end of this section labeled Eyebolts to determine the
allowable load of the eyebolts shipped with the display.
Figure 8 below illustrates both the correct (left example) and the incorrect (right
example) method of lifting a display. Lift the display as shown on the left, with the
lifting bar. Use every lifting point provided.
Figure 8: Lifting the Display (Correct, Left; Incorrect, Right)
Do not attempt to permanently support the display by the eyebolts.
2-2
Mechanical Installation
If removing the eyebolts, adequately seal the ho
½ inch in size. Silicone along the threads to ensure that water does not enter the
display.
2.5 Display Mounting
Reference Drawing:
Shop Drawing, AF-3112-2480-34-SF-*
Shop Drawing, AF-3112-1680-34-SF-*
The method used to mount displays can vary greatly from location to location. For
is reason, only general mounting topics can be addressed in this manual.
th
It is the responsibility of the installer to
meet local codes and standards, as well as the mounting hardware and methods.
Before beginning the installation proces s, verify the following items:
• The mounting structure will provide a straight and square-mounting frame
for the display. Height variation in any fou r -f oo t hori zontal section may
not exceed ¼-inch.
• The mounting structure will not give way at any unsuppor ted points after
the display is mounted.
The back of the display has nutserts to which the mounting structure will be attached
as show
mounted displays inspected by a qualified structural engineer. It is the customer’s
responsibility to determine the proper wall mounting method and location.
Refer to D
number of attachment points needed and the wall structure must be reviewed by a
qualified structural engineer and meet all national and local codes. Daktronics
recommends attaching to all nutserts provided.
n in Drawing A-193720 or Drawing A-201993. Remember to have all
rawing A-193720 or A-201993 for a suggested wall mount method. The
1. Carefu
2. Fol
3. Use t
4. Refer t
5. After in
lly uncrate the display. Look each side of the display over for
damage during shipping.
lowing the guidelines described in Section 2.4, lift the display into
position on the support structure.
he provided nutserts in the display for mounting to the structure.
o Section 3 for information on routing power and signal.
stallation is complete, carefully inspect the display for any holes
that may allow water to seep into the display. Seal any openings with
silicone. If the eyebolts on the top of the display have been removed,
plug the holes with bolts and the rubber-sealing washers that were
removed with the eyebolts.
les using bolts and sealing washers,
-P/M................Drawing A-193720
-P/M................Drawing A-201993
ensure the installation will adequately
2.6 Optional Temperature Sensor Mounting
If a temperature sensor will be used with your display, see Appendix C for mounting
and signal connections.
Mechanical Installation
2-3
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
3: Section Electrical Installation
Only a qualified individual should terminate power within this Daktronics display or
signal to the signal enclosure.
The Daktronics engineering staff must approve any changes made to the display. Before
altering the display, submit detailed drawings for the proposed modifications to the
Daktronics engineering staff for evaluation and approval, or the warranty will be rendered
null and void.
3.1 Common Connectors in the Display
The power and signal connections in the displays 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 display installation and maintenance.
1. Ribbon Cable Connectors:
Figure 9 on the right illustrates a typical ribbon connector. To
disconnect the ribbon cable, push the plastic clips on the sides
out 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 to the plug before
inserting it into the jack. This paste will protect both the
plug and the jack from corrosion.
2. Termination Blocks:
Termination blocks are usually used to connect internal
power and signal wires to wires of the same type coming
into the display from an external source. 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
Figure 10 on
the right.
Figure 9: Ribbon
Cable Connector
Figure 10: Termination
Block
Electrical Installation
3-1
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