Daktronics AR-1522 User manual

201 Daktronics Drive
Brookings, SD 57006-5128
www.daktronics.com/support
800.325.8766
OUTDOOR LED
MOTORSPORTS DISPLAYS
INSTALLATION MANUAL
P1198
DD2956770
Rev 06
03 August 2021
Motorsports Models
AR-1522 AR-2426 CH-3105
AR-2401 AR-2427 DR-2482
AR-2402 AR-2428 DR-2483
AR-2404 AR-2429 DR-3682
AR-2407 CH-3001 DR-3683
AR-2421 CH-3002 DR-4882
AR-2422 CH-3003 DR-4883
AR-2423 CH-3004
AR-2424 CH-3006

Copyright © 2015-2021
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.
Daktronics trademarks are property of Daktronics, Inc. All other trademarks are property of their respective companies.
FCC Statement
Supplier Declaration of Conformity (SDoC)
This product complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
Note: This equipment has been tested and found to
comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against
harmful interference when the equipment is operated
in a commercial environment. This equipment
generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance
with the instruction manual, may cause harmful
interference to radio communications. Operation of
this equipment in a residential area is likely to cause
harmful interference in which case the user will be
required to correct the interference at their own
expense.
Warning: The user is cautioned that changes and
modications made to the equipment without the
approval of manufacturer could void the user’s
authority to operate this equipment.
Industry Canada Regulatory Information
This Class A digital apparatus complies with Canadian
ICES-003.
Cet appareil numérique de la classe A est conforme à
la norme NMB-003 du Canada.
Inquiries
Contact Daktronics with any questions regarding our
product compliance.
Mail:
Daktronics
201 Daktronics Dr.
Brookings, SD 57006 USA
Phone:
800-325-8766
Website:
www.daktronics.com

– i –
Table of Contents
1 Introduction���������������������������������������������������������������������������������������������������������������������������1
Important Safeguards ..........................................................................................................................1
Specications Label .............................................................................................................................1
Resources ..............................................................................................................................................1
Troubleshooting ....................................................................................................................................2
Display Controllers ................................................................................................................................2
Product Safety Approval .....................................................................................................................2
2 Mechanical Installation �������������������������������������������������������������������������������������������������������3
Lifting......................................................................................................................................................3
Vertical Display Mounting....................................................................................................................4
Mounting Horizontal Displays ..............................................................................................................6
Clamping Angles������������������������������������������������������������������������������������������������������������������������������6
I-Beam Clamps (Drag Racing) �������������������������������������������������������������������������������������������������������7
Go-Kart Display Mounting ...................................................................................................................8
CH-3105���������������������������������������������������������������������������������������������������������������������������������������������9
Ad Panel Mounting ..............................................................................................................................9
Unistrut Attachment��������������������������������������������������������������������������������������������������������������������������9
Clamping Angles����������������������������������������������������������������������������������������������������������������������������10
I-Beam Clamps (Drag Racing) �����������������������������������������������������������������������������������������������������11
3 Electrical Installation ����������������������������������������������������������������������������������������������������������12
Installation Overview..........................................................................................................................12
Power ...................................................................................................................................................15
Grounding ���������������������������������������������������������������������������������������������������������������������������������������16
Installation with Ground and Neutral Conductors Provided ..................................................16
Installation with Only a Neutral Conductor Provided..............................................................16
Lightning Protection������������������������������������������������������������������������������������������������������������������������16
Connection �������������������������������������������������������������������������������������������������������������������������������������17
Power-On Self-Test (POST)..................................................................................................................18
Wired Signal Connection...................................................................................................................18
Copper Signal���������������������������������������������������������������������������������������������������������������������������������18
Fiber Optic Signal ���������������������������������������������������������������������������������������������������������������������������19
Multiple Driver Connections ����������������������������������������������������������������������������������������������������������19
Wireless Signal Connection ...............................................................................................................19
All Sport Control������������������������������������������������������������������������������������������������������������������������������19
Radio Settings ���������������������������������������������������������������������������������������������������������������������������������19
Power/Signal Connections Between Sections................................................................................20
Vertical Displays �����������������������������������������������������������������������������������������������������������������������������20
Horizontal Displays (AR-2402 + AR-2407) �������������������������������������������������������������������������������������20
CH-3105 ������������������������������������������������������������������������������������������������������������������������������������������21
CH-3001 and CH-3006 �������������������������������������������������������������������������������������������������������������������21
Drag Racing Displays���������������������������������������������������������������������������������������������������������������������21
Optional Win Light Installation...........................................................................................................22

– ii –
Table of Contents
4 Daktronics Exchange and Repair & Return Programs ����������������������������������������������������23
Exchange Program ............................................................................................................................23
Repair & Return Program...................................................................................................................24
Daktronics Warranty & Limitation of Liability ...................................................................................24
A Specications����������������������������������������������������������������������������������������������������������������������25
B Reference Drawings �����������������������������������������������������������������������������������������������������������27
C Daktronics Warranty & Limitation of Liability��������������������������������������������������������������������37

Introduction
1
1 Introduction
This manual explains the installation of Daktronics auto racing, drag racing, and go-kart
displays. For additional information regarding the safety, installation, operation, or service
of these displays, refer to the telephone numbers listed in Section 4: Daktronics Exchange
and Repair & Return Programs (p�23). This manual is not specic to a particular
installation.
Important Safeguards
• Read and understand all instructions before beginning the installation process�
• Properly ground the cabinet with a grounding electrode at the display location�
• Disconnect the display power when not in use or when servicing�
• Disconnect the display power before servicing power supplies to avoid electrical
shock� Power supplies run on high voltage and may cause physical injury if touched
while powered�
• Do not modify the structure or attach any panels or coverings to the display without
the express written consent of Daktronics�
• Do not disassemble control equipment or electronic controls of the display; failure to
follow this safeguard will make the warranty null and void�
• Do not drop the control equipment or allow it to get wet�
Specications Label
Power specications as well as serial and model number information can be found on an
ID label afxed to the display, similar to the one shown in Figure 1.
DAKTRONICS 201 DAKTRONICS DR. BROOKINGS, SD PHONE [phone]
SUITABLE FOR SERVICING ONLY WHEN DE-ENERGIZED
PUET FAIRE L'OBJET D'UN ENTRETIEN UNIQUEMENT S'IL EST HORS TENSION
CONFORMS TO
UL STD 48
CERTIFIED TO CSA
STD C22.2 NO. 207
17800
0A-1198-3509 HRev: 00
SN: 1001
04/25/16
3219728 0001
AR-2426-201X-R
RMN: DAKT-0405-01
100-240V~1P: 50/60HZ
MAX AMPS AC: 2-1A
MAX WATTS AC: 170W
Product Number Model Number
Figure 1: Specications Label
Please have the assembly number, model number, and the date manufactured on hand
when calling Daktronics customer service to ensure the request is serviced as quickly as
possible. Knowing the facility name and/or job number will also be helpful.
Note: AR = Auto Racing displays, CH = Go Kart displays, DR = Drag Racing displays
Resources
Figure 2 illustrates a Daktronics drawing label.
This manual refers to drawings by listing the last
set of digits. In the example, the drawing would
be referred to as DWG-1007804. All references to
drawing numbers, appendices, gures, or other
manuals are presented in bold typeface.
Drawing Number
Figure 2: Drawing Label

Introduction
2
Any drawings referenced in a section are listed at the beginning of it as shown below:
Reference Drawings:
System Riser Diagram....................................................................................... DWG-1007804
Daktronics identies manuals by the DD or ED number located on the cover page.
Listed below are drawing types commonly used by Daktronics, along with the information
typically provided. All drawings referenced in this manual are found in the appendices.
• Schematic Drawings: describe internal power and signal wiring as well as
interconnections between display sections; they may also include digit designations
and driver addressing information
• Shop Drawings: describe mounting methods to structural elements, access method
(front or rear), and power and signal entrance points
• System Riser Diagrams: describe power/signal connections between components
and the control location; they may also include control room layout and schematic
• Final Assembly Drawings: describe internal component locations and detailed
product appearance with part numbers and quantities
Project-specic information takes precedence over any other general information found
in this manual. Ensure all applicable material has been gathered before beginning the
installation. Contact a Daktronics sales coordinator or project manager.
Troubleshooting
For an extensive troubleshooting guide, instructions on how to replace display
components, and detailed schematic drawings, refer to the following manual, available
online at www.daktronics.com/manuals:
• Outdoor LED Scoreboards with Gyrus Driver Service Manual (DD3000541)
Display Controllers
Daktronics racing displays are designed for use with All Sport®5100 series control
consoles. These consoles use keyboard overlays (sport inserts) to control numerous sports/
events and display models. Refer to the manual below for operating instructions.
• All Sport 5100 Timer Operations Manual (ED-12501)
Daktronics motorsports displays may also be controlled by third-party software. In these
instances, the All Sport controller functions as a signal converter between the software
and the display. Software providers must have permission to output data in a specic
format for Daktronics displays. Contact Daktronics for approved providers. Refer to the
documentation from the particular software provider for operating instructions.
Product Safety Approval
Daktronics outdoor displays are ETL-listed, tested to CSA standards, and CE-labeled for
outdoor use. Contact Daktronics with any questions regarding testing procedures.

Mechanical Installation
3
2 Mechanical Installation
Mechanical installation consists of installing concrete footing and steel beams and
mounting the display and accompanying ad panels to the beams. The product
specication sheets listed in Appendix A include installation specication drawings that
show the recommended number of beams and spacing between them. The drawings
also indicate the size of beams required to support the display at different heights and at
various wind speeds.
Any column and footing size dimensions are to assist with estimating installation costs;
they are estimates only and are not intended for actual construction purposes. Be sure
that the installation complies with local building codes and is suitable for the particular
soil and wind conditions. The columns, footings, and all connection details must be
designed and certied by a professional engineer licensed to practice in the state of the
display installation.
Note: Daktronics assumes no liability for any installation derived from the information
provided in this manual or installations designed and installed by others.
Lifting
Displays and display sections ship equipped with 1/2" shoulder-type eyebolts located
along the top of the cabinet for the purpose of lifting.
Whenever possible, use a spreader bar, or lifting bar, to lift the display� Spreader bars
ensure force on the eyebolts remains straight up, minimizing lifting stress.
Figure 3 illustrates the preferred lifting method on the left and an acceptable alternative
lifting method on the right. When lifting the cabinet:
• Use a spreader bar if possible.
• Use every lifting point provided.
Avoid using other lifting methods. Cables and chains attached to the eyebolts and
directly to a center lifting point, as shown in the “Acceptable” example in Figure 3,
can create a dangerous lateral force on the eyebolts and may cause them to fail. The
smaller the angle between the cable and the top of the cabinet, the lighter the cabinet
must be to safely lift it. If this method must be used, ensure a minimum angle between
the chain and cabinet of at least 45°.
Preferred
Lifting Bar 45° Minimum
Acceptable
Figure 3: Lifting Methods

Mechanical Installation
4
Do NOT attempt to lift the cabinet if the angle is less
than 45°. Exceeding load angles or weight limits could
cause the bolts in the cabinet to buckle, resulting
in serious damage to the equipment or injury to
personnel. Also, loads should be applied directly in the
plane of the eyebolt as shown in Figure 4.
Note: Daktronics assumes no liability for damages
resulting from incorrect setup or lifting
methods. Eyebolts are intended for lifting only.
Do not attempt to permanently support the
cabinet by the eyebolts or eyebolt holes.
In typical multi-section installations, the lowest display
section is installed rst and secured to the support
beams. The upper sections are then placed atop or
above the lower sections and attached to the beams.
If installers remove the eyebolts, plug the holes with bolts and the rubber washers that
are used with the eyebolts. Apply silicone or another waterproof sealant to the eyebolt
openings. Also inspect the top and sides of the display for any other holes that may allow
moisture to enter the display, then plug and seal those openings.
Vertical Display Mounting
Reference Drawings:
P1647; Pole Mounting Options ........................................................................ DWG-1048184
Mounting hardware includes spring nuts, rear clamping angles; 1/2-13 x 24" threaded
rods; and 1/2" nuts, at washers, and lock washers. Refer to DWG-1048184 in Appendix B.
Note: Do not use lubrication on any mounting hardware or the warranty will be void!
1� Lift the display to the desired height on the main vertical structure.
2� Insert spring nuts into the left and right cabinet channels. Twist the spring nuts until
they are perpendicular to the channel (Figure 5).
Acceptable Unacceptable
Figure 4: Eyebolt Plane Load
Figure 5: Spring Nut Insertion (Vertical)

Mechanical Installation
5
Note: Each vertical POSITION cabinet section will typically require two horizontal
beams fastened to the main vertical structure. Cabinets are attached to
each horizontal beam with four spring nuts and two clamping angles.
3� Position a spring nut on the top and bottom of each horizontal beam.
4� Screw a threaded rod into each of the spring nuts as far as it will go.
5� Slide clamping angles over the ends of the rods and loosely install the washers and
nuts.
6� Make nal adjustments in the positioning of the display section to ensure it is ush and
level.
7� Ensure the threaded rods are perpendicular to the display, and then tighten all of the
1/2" hex nuts (Figure 6).
8� Repeat Steps 1-7 for all display sections.
1/2" Flat Washer,
Lock Washer, Nut,
& Threaded Rod
Horizontal
Beam
Vertical
Beam
Display
Section
Clamping
Angle
Spring Nuts
(Inside Channel)
Figure 6: Spring Nut Mounting, Side View

Mechanical Installation
6
Mounting Horizontal Displays
Two standard mounting methods are available for horizontal displays, including variable
position sections below vertical pylons and time/lap sections above vertical pylons. Each
method requires spring nuts to be inserted into the rear channel of the display cabinet.
Note: Do not use lubrication on any mounting hardware or the warranty will be void!
1� Insert spring nuts into the top and bottom cabinet channels. Twist the spring nuts until
they are perpendicular to the channel (Figure 7).
2� Measure the beam spacing and position a spring nut on either side of the beams.
Each display section requires four spring nuts per beam (two at the top and two at
the bottom).
Figure 7: Spring Nut Insertion
Once the spring nuts are in place, refer to the appropriate section that follows for the
type of mounting hardware provided with the display.
Clamping Angles
Reference Drawings:
P1647; Pole Mounting Options ........................................................................ DWG-1048184
Use this mounting method to mount a display to I-beams or any beam/pole that does
not have anges. Mounting hardware includes spring nuts; rear clamping angles; 1/2-13
x 24" threaded rods; and 1/2" nuts, at washers, and lock washers. Refer to Figure 8 and
DWG-1048184 in Appendix B.
Note: The threaded rods do not pass through the beams; they run along both sides.
1� Screw a threaded rod into each of the spring nuts as far as it will go.
2� Position a display section at the front of the beams with the threaded rods extending
from the rear of the spring nuts, straddling the beams.
3� Lift the display section to the desired height.
4� Slide clamping angles over both rods, and then loosely install the washers and nuts.
5� Make nal adjustments to the display section position to ensure it is ush and level,
and then rmly tighten all of the 1/2" hex nuts.
6� Repeat Steps 1-5 for all display sections.

Mechanical Installation
7
I-Beam Clamps (Drag Racing)
Reference Drawings:
P1647; I-Beam Clamp Mounting..................................................................... DWG-1052565
P1647; DSA I-Beam Clamp Mounting............................................................. DWG-1064893
Use this mounting method to mount a display to I-beams with a ange thickness of 1/4" –
3/4". If the ange is thicker than 3/4", longer bolts will be required at added expense.
Mounting hardware includes spring nuts, I-beam clamps, 1/2-13 x 3" bolts, 1/2" at
washers, and 1/2" lock washers. Refer to Figure 9 and DWG-1052565 in Appendix B.
1� Position a display section at the front of the beams, and lift it to the desired height.
2� Slide a lock washer, at washer, and I-beam clamp onto the bolt, and loosely screw
the bolt into the spring nut.
3� Position each I-beam clamp assembly as close to the I-beam anges as possible.
4� Make nal adjustments to the display section position to ensure it is ush and level,
and then rmly tighten all of the bolts.
5� Repeat Steps 1-4 with all display sections.
Note: For DSA (California) approved mounting to I-beams, refer to DWG-1064893.
1/2" Flat Washer,
Lock Washer, Nut,
& Threaded Rod
Vertical
Beam
Display
Section
Clamping Angle
Spring Nut
Figure 8: Clamping Angle Mounting, Side View

Mechanical Installation
8
Go-Kart Display Mounting
Note: Do not use lubrication on any mounting hardware or the warranty will be void!
Reference Drawings:
Scoreboard Mounting...................................................................................... DWG-1130246
Mounting hardware includes mounting channels; rear clamping angles; 1/2-13 x 15"
threaded rods; and 1/2" square nuts, hex nuts, and lock washers. Refer to Figure 10 and
DWG-1130246 in Appendix B.
Note: The threaded rods do not pass through the beams; they run along both sides.
1� Position the display at the front of the beams, and lift it to the desired height.
2� Place a mounting channel against the upper rear ange of the cabinet next to each
beam.
3� Using the mounting channel as a template, drill two 9/16" holes in the upper rear
ange of the cabinet where the rods will pass through. The rods should be as close to
the beam as possible.
4� Place 1/2" square nuts inside the mounting channel, and thread the rods through the
rear ange of the cabinet and the mounting channel.
5� Slide clamping angles over the other ends of both threaded rods, and then loosely
install the washers and nuts.
6� Make nal adjustments to the display position to ensure it is ush and level, and then
rmly tighten all of the 1/2" hex nuts.
7� Repeat Steps 2-6 for the lower rear ange of the cabinet for every beam.
1/2-13 x 3" Bolt
1/2" Lock Washer
1/2" Flat Washer
I-Beam Clamp
Beam Spring Nut
Display
Cabinet
Figure 9: I-beam Clamp Mounting, Rear Rotated View

Mechanical Installation
9
CH-3105
The CH-3105 horizontal 4-section go-kart display can be mounted to beams with the use
of special brackets that both hold the cabinet to the beams and connect two sections
together. The CH-3105 can also be mounted to a wall via holes in the sides of the
cabinet. Due to the variety of wall materials used in racing facilities, Daktronics cannot
anticipate a customer's individual installation needs or provide mounting hardware
suitable for every installation. Choose a method of installation that will safely support the
display weight.
Refer to the installation drawings attached to the CH-3105 product specication sheet
listed in Appendix A for more information about beam and wall mounting.
Ad Panel Mounting
Note: Do not use lubrication on any mounting hardware or the warranty will be void!
Unistrut Attachment
1� Using the backup channel as a
template, drill four 7/16" holes in the
upper and lower rear anges of the
ad panel where the beams will be
located.
Note: Try to ensure that the two
center holes will be within the
width of the beam.
2� If the ad panel has backsheets,
remove them as needed to access the
ad panel interior.
3� Attach the piece of unistrut to the ad
panel with the included hardware, as
shown in Figure 11.
1/2" Hex Nut
1/2" Lock Washer
Clamping Angle
1/2" Square Nut
Mounting
Channel
1/2-13 X 15" Threaded Rod
Beam
Display
Cabinet
Figure 10: C-channel Mounting Method, Side View
3/8-16 x 1" Bolt
3/8-16 Square Nut
3/8" Lock Washer
3/8" Flat Washer
Unistrut
Backup Channel
Figure 11: Unistrut Attachment, Side View

Mechanical Installation
10
4� If any backsheets were removed, put them back on at this time.
5� Place spring nuts into the unistrut. Twist the spring nuts until they are perpendicular to
the unistrut channel. Refer to Figure 7 from Mounting Horizontal Displays (p�6).
Note: Ad panel cabinets require four spring nuts per beam (two at the top and two
at the bottom).
Once the unistrut is attached and the spring nuts are in place, refer to the appropriate
section that follows for the type of mounting hardware provided with the ad panel.
Clamping Angles
Reference Drawings:
Ad Panel Pole Mounting.................................................................................. DWG-1052388
Mounting hardware includes rear clamping angles; 1/2-13 x 24" threaded rods; and 1/2"
nuts, at washers, and lock washers. Refer to Figure 12 and DWG-1052388 in Appendix B.
Note: The threaded rods do not pass through the beams; they run along both sides.
1� Screw a threaded rod into each of the spring nuts as far as it will go.
2� Position the ad panel at the front of the beams, and lift it to the desired height.
3� Slide clamping angles over both rods, and then loosely install the washers and nuts.
4� Make nal adjustments to the ad panel position to ensure it is ush and level, and
then rmly tighten all of the 1/2" hex nuts.
1/2" Flat Washer,
Lock Washer, & Nut
1/2" Threaded Rod
Spring Nut
Clamping Angle
Ad Panel Beam
Figure 12: Ad Panel Clamping Angle Mounting, Side View

Mechanical Installation
11
I-Beam Clamps (Drag Racing)
Reference Drawings:
Ad Panel I-beam Clamp Mounting................................................................ DWG-1052539
Ad Panel DSA I-beam Clamp Mounting........................................................ DWG-1064894
Use this mounting method to mount an ad panel to I-beams with a ange thickness of
1/4" – 3/4". If ange is thicker than 3/4", longer bolts will be required at added expense.
Mounting hardware includes I-beam clamps, 1/2-13 x 3" bolts, 1/2" at washers, and 1/2"
lock washers. Refer to Figure 13 and DWG-1052539 in Appendix B.
1� Position the ad panel at the front of the beams, and lift it to the desired height.
2� Slide a lock washer, at washer, and I-beam clamp onto the bolt, and loosely screw
the bolt into the spring nut.
3� Position each I-beam clamp assembly as close to the I-beam anges as possible.
4� Make nal adjustments to the ad panel position to ensure it is ush and level, and
then rmly tighten all of the bolts.
Note: For DSA (California) approved mounting to I-beams, refer to DWG-1064894.
Spring Nut
Ad Panel
with Unistrut
Beam
I-Beam Clamp
1/2" Flat Washer
1/2" Lock Washer
1/2-13 x3" Bolt
Figure 13: Ad Panel I-beam Clamp Mounting, Rear Rotated View

Electrical Installation
12
3 Electrical Installation
CAUTION:Onlyqualiedindividualsshouldperformroutingandterminationtothe
display� Electrical contractors are responsible for ensuring that all electrical work meets
or exceeds local and national codes� Daktronics engineering staff must approve all
changes or the warranty will be void�
Electrical installation consists of the following processes:
• Providing power and ground to a disconnect near the display.
• Routing power and ground from the main disconnect to the display power/signal
enclosure.
• Routing the control signal cable from the control location to the display location
and/or installing the wireless radio receiver.
Installation Overview
Figure 14 illustrates a wired setup between a vertical (Auto Racing) display and
controller. Daktronics part numbers are shown in parentheses.
Power & Signal
Terminated Inside
Bottom Display Section
Lockable Power
Distribution /
Disconnect
Vertical Beams
Vertical
Structure Horizontal
Beams
To Control Location
To Main Power Source
- See Specfications
Grounding Rod
Grounding Wire
Signal Cable: 2 Pair,
22 AWG (W-1234);
Max 2000'
To Display
Signal Cable:
10' (W-1340)
20' (W-1236)
30' (W-1238)
50' (W-1237)
J1, J2,
or J3
All Sport Controller
J-Box,
1/4" Phone Jack;
Outdoor: (0A-1091-0227)
Indoor: (0A-1009-0038)
Pin Color Function
tip red signal +
ring black signal -
shaft green not used at
control end
Figure 14: Vertical Display Wired Installation (AR Shown)
Note: Power, signal, and control are similar for go-kart displays, while mounting differs.

Electrical Installation
13
Figure 15 illustrates a typical wireless setup between a vertical (Auto Racing) display and
controller.
1
2
POS
3
4
5
LAP
TIME
DAKTRONICS
Power Terminated
Inside Display
(Through Rear Conduits
of Bottom Section)
All Sport Controller
with Radio Option
Up to 1500' away with
direct line of sight
Radio
Receiver
Lockable Power
Distribution /
Disconnect
To Main Power Source
- See Specfications Grounding Rod
Grounding Wire
Figure 15: Vertical Display Wireless Installation (AR Shown)

Electrical Installation
14
Figure 16 illustrates a typical wired setup between a horizontal (Drag Racing) display and
controller. Daktronics part numbers are shown in parentheses.
Display Rear
Power is terminated inside
both display sections;
Signal is terminated inside bottom
section and re-driven into top section
Lockable Power
Distribution /
Disconnect
To Control Location
To Display
To Main Power Source
- See Specfications
Grounding Rod
Grounding Wire
Concrete
Footings
Signal Cable: 2 Pair,
22 AWG (W-1234);
Max 2000'
Signal Cable:
10' (W-1340)
20' (W-1236)
30' (W-1238)
50' (W-1237)
J1, J2,
or J3
All Sport Controller
J-Box, 1/4" Phone Jack;
Outdoor: (0A-1091-0227)
Indoor: (0A-1009-0038)
Pin Color Function
tip red signal +
ring black signal -
shaft green not used at
control end
Figure 16: Horizontal Display Wired Installation (DR Shown)
Note: Multi-section horizontal displays require internal power/signal interconnects
between sections, and prior to June 2016, Drag Racing displays required
PVC pipes to route power and signal between sections; refer to Power/Signal
Connections Between Sections (p�20).

Electrical Installation
15
Figure 17 illustrates a typical wireless setup between a horizontal (Drag Racing) display
and controller.
DAKTRONICS
Power Terminated
Inside Display
Through Rear
Lockable Power
Distribution /
Disconnect
To Main Power Source
- See Specfications
Grounding Rod
Grounding Wire
Concrete
Footings
All Sport Controller
with Radio Option
Up to 1500' away with
direct line of sight
Radio
Receiver
Signal in Conduit
from Bottom to
Top Section
(Drag Racing
Displays Only)
Figure 17: Horizontal Display Wireless Installation (DR Shown)
Note: Radio-controlled Drag Racing displays require signal wire in conduit from the
bottom section up into the top section; refer to Wired Signal Connection (p�18).
Multi-section horizontal displays require internal power/signal interconnects
between sections, and prior to June 2016, Drag Racing displays required
PVC pipes to route power and signal between sections; refer to Power/Signal
Connections Between Sections (p�20).
Power
Onlyqualiedindividualsshouldcompletetheelectricalinstallation;untrainedpersonnel
should not attempt to install these displays or any of the electrical components� Improper
installation can seriously damage the equipment and be hazardous to personnel�
Refer to the specication label on the display (Figure 1), the label inside the display
(Figure 19), or the product specication sheets shipped with it (and listed in Appendix A),
to determine maximum power requirements. Ensure all external overcurrent protection
meets all local and national electrical codes and is appropriately sized to the load it is
terminating. Failure to meet wiring and overcurrent protection device requirements will
void the warranty.
Note: Ensure the display is on a dedicated circuit. This will prevent loss of critical race/
event information that may otherwise occur if another component on the same
circuit should fail.

Electrical Installation
16
Grounding
All components of a display system – including but not limited to displays, control
equipment, and connected peripheral equipment – must be electrically grounded.
Only qualied individuals may perform electrical work, including verication of ground
resistance. Daktronics is not responsible for improper grounding or damage incurred as a
result of improper grounding.
Grounding methods must meet the provisions of all applicable local and national codes.
Inspect and verify all grounding methods meet the provisions of all applicable local and
national codes.
Proper grounding is necessary for reliable equipment operation and general electrical
safety. Failure to properly ground the display system may void the warranty, disrupt
operation, damage equipment, and cause bodily harm or death.
There are two types of power installation: installation with ground and neutral conductors
provided, and installation with only a neutral conductor provided. These two power
installations differ slightly, as described in the following subsections.
Installation with Ground and Neutral Conductors Provided
For this type of installation, the power circuit must contain an isolated earth-ground
conductor. In this circumstance, do not connect neutral to ground at the disconnect or
at the display as this would violate electrical codes and void the warranty.
Use a disconnect so that all ungrounded lines can be disconnected. The local and
national electrical codes may require using a lockable power disconnect at or within
sight of the display.
Installation with Only a Neutral Conductor Provided
Installations where no grounding conductor is provided must comply with local and
national electrical codes. If the installation meets all requirements, observe the following
guidelines:
• Connect the grounding electrode cable at the local disconnect, never at the display
driver/power enclosure.
• Use a disconnect that opens all of the ungrounded phase conductors.
Lightning Protection
The use of a disconnect near the display location to completely cut all current-carrying
lines signicantly protects the circuits against lightning damage. Local and national
electrical codes may also require it. In order for this system to provide protection, the
power must be disconnected when the display is not in use.
The control console also should be disconnected from power and from the signal
junction box when the system is not in use. The same surges that may damage the
display components can also damage the console’s circuitry.