Daktronics DataTime DF-1012 User manual

Table of Contents 1
201 Daktronics Drive PO Box 5128 Brookings, SD 57006
tel [phone] fax [phone]
www.daktronics.com
DataTime®DF-1012
Time & Temperature Display
Installation and Operation Manual
DD2563927 Rev 02—25 November 2014

DD2563927
Product 1279
Rev 02—25 November 2014
Copyright © 2013-2014
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 is a registered trademark of Daktronics, Inc.
All other trademarks are the property of their respective companies.

Table of Contents i
Table of Contents
Section 1: Introduction.......................................................................................................................................... 1
1.1 Safety Precautions ................................................................................................................................................ 1
1.2 Product Overview ................................................................................................................................................ 1
Section 2: Mechanical Installation ....................................................................................................................... 3
2.1 Mechanical Installation Overview..................................................................................................................... 3
2.2 Support Structure Design.................................................................................................................................... 3
2.3 Lifting the Display ............................................................................................................................................... 4
2.4 Temperature and Light Sensor........................................................................................................................... 4
Locating the Temperature Sensor............................................................................................................... 5
Connecting the Temperature Sensor.......................................................................................................... 5
Connection to the Sensor ............................................................................................................................. 6
Section 3: Electrical Installation........................................................................................................................... 7
3.1 Preparing for Power/Signal Connection.......................................................................................................... 7
3.2 Power Connections .............................................................................................................................................. 7
3.3 Grounding Connections...................................................................................................................................... 7
3.4 Power Installation ................................................................................................................................................ 8
Installation With Ground and Neutral Conductors Provided ............................................................... 8
Installation With Only A Neutral Conductor Provided.......................................................................... 8
3.5 Lightning Protection ............................................................................................................................................ 8
3.6 Signal Connection ................................................................................................................................................ 9
Host/Client Definitions .............................................................................................................................. 9
Direct – Outdoor Connection ................................................................................................................... 10
Direct – Indoor Connection ...................................................................................................................... 11
Section 4: Maintenance and Troubleshooting .................................................................................................. 15
4.1 Component Location and Access .................................................................................................................... 15
4.2 Troubleshooting ................................................................................................................................................. 16
Error Codes .................................................................................................................................................. 17
Power On Self-Test ..................................................................................................................................... 17
Section 5: Parts Replacement ............................................................................................................................ 19
5.1 Replacement Parts List ...................................................................................................................................... 19
5.2 Instructions for Replacing Parts....................................................................................................................... 20
Replacing a Digit......................................................................................................................................... 20
Replacing a Digit Segment......................................................................................................................... 20
Segmentation and Digit Designation ....................................................................................................... 21
Replacing an LED Driver........................................................................................................................... 21
Replacing a Signal Surge Board ............................................................................................................... 22

ii Table of Contents
Section 6: Daktronics Exchange and Repair & Return Programs .................................................................. 25
6.1 Exchange Program ............................................................................................................................................. 25
Before Contacting Daktronics ................................................................................................................... 25
6.2 Repair & Return Program ................................................................................................................................. 25
Shipping Address........................................................................................................................................ 26
6.3 Daktronics Warranty and Limitation of Liability.......................................................................................... 26
Section 7: DM-100 Controller.............................................................................................................................. 27
7.1 DM-100 Overview.............................................................................................................................................. 27
7.2 DataMaster Insert............................................................................................................................................... 27
7.3 Time & Temperature Display Operation........................................................................................................ 27
Time & Temperature Display Setup ........................................................................................................ 28
Menu Items .................................................................................................................................................. 29
Daylight Savings Setting............................................................................................................................ 29
Set Time ....................................................................................................................................................... 29
Set Date......................................................................................................................................................... 30
Degrees F Temperature Offset .................................................................................................................. 30
Set Degrees C Temperature Offset ........................................................................................................... 31
Time & Temperature Format/Hold Settings.......................................................................................... 31
Sequence Order ........................................................................................................................................... 32
LED Test ....................................................................................................................................................... 32
Modem Settings........................................................................................................................................... 32
Display Status.............................................................................................................................................. 33
Diagnostics................................................................................................................................................... 33
Dimming....................................................................................................................................................... 33
Appendix A: Reference Drawings .......................................................................................................................... 37
Appendix B: Temperature Sensor Mounting (ED-18601) ..................................................................................... 39
Appendix C: DataTime®Quick Installation Reference (A-176249) ...................................................................... 41
Appendix D: DataTime®Quick Start Reference (DD2563921).............................................................................. 43
Appendix E: Daktronics Warranty and Limitation of Liability (SL-02374).......................................................... 45

Introduction 1
Section 1: Introduction
This manual provides the necessary information to install and service a Daktronics DataTime®DF-1012 Time &
Temperature display. Contact Daktronics Technical Support with questions before or during the installation process.
1.1 Safety Precautions
• Read and understand these instructions before installing the display.
• Do not drop the controller or allow it to get wet.
• Properly ground the display with a ground rod at the sign location.
• Disconnect power when the display is not in use.
• Disconnect power when servicing the display.
• Do not modify the display structure or attach any panels or coverings without the express written
consent of Daktronics.
Figure 1 shows a label found inside the display where the model number and power requirements are
located. When calling Daktronics
Customer Service, please have this
information available to ensure
that a request is serviced as
quickly as possible.
1.2 Product Overview
DataTime®Time & Temperature displays show temperatures in Fahrenheit or Celsius (three digits, degree
symbol, and F or C character) and 12- or 24-hour time.
These displays have the following features:
• LEDs illuminate numeric digits.
• Maximum power usage is 180 W using a 120 V power input.
• Cabinets are constructed of heavy-gauge aluminum.
• Digit faceplates are black and set directly into the surface of the display.
• Mounting weights and dimensions for each model are listed in Section 2.1 of this manual.
• DataTime®displays use a DM-100 handheld controller. See Section 7 for operating instructions.
DataTime®display model numbers - DF-1012-HH-C - are defined as follows:
ASSY NO.
SER. NO.
MFG DATE
201 DAKTRONICS DR.
BROOKINGS, SD 57006-5128 PHONE [phone]
DAKTRONICS
LL-2306R01
Figure 1: Display Identication Label
DF-1012 = Outdoor Digit Display
HH = Digit height in inches (10, 13, 18, 24)
C= LED Color- R (Red) or A (Amber)

Mechanical Installation 3
Section 2: Mechanical Installation
Daktronics’ engineering staff must approve any changes that may affect the display’s weather tightness. Before any
modifications are made, submit detailed drawings of the changes to Daktronics for evaluation and approval or the
warranty will be void.
Daktronics is not responsible for the installation or the structural integrity of support structures done by others. It is
the customer’s responsibility to ensure that a qualified structural engineer approves the structure and any additional
hardware.
2.1 Mechanical Installation Overview
Mechanical installation typically consists of mounting the display and any accompanying panels to the
support structure.
The tables below show the weights and dimensions for each model.
2.2 Support Structure Design
While DataTime®displays are designed for wall or pole mounting, every installation is different. Actual site
demands dictate the appropriate mounting method. DataTime®DF-1012 models are designed to be inserted
into an existing sign cabinet or for rear attachment using the threaded inserts in the rear of the display.
120 V AC
Model Dimensions (H x W x D)
Feet and Inches (Meters)
Uncrated Weight
Pounds (kg) Digit Size Watts
DF-1012-10-R or A 1'3" x 3' x 6"
(0.39 x 0.89 x 0.16) 25 (10) 10 90
DF-1012-13-R or A 1'6" x 4' x 6"
(0.46 x 1.22 x 0.16) 27 (12) 13 100
DF-1012-18-R or A 2' x 5' x 6"
(0.61 x 1.53 x 0.16) 43 (20) 18 130
DF-1012-24-R or A 2' 6"x 6'6" x 6"
(0.77 x 1.99 x 0.16) 58 (26) 24 180
230 V AC
Model Dimensions (H x W x D)
Feet and Inches (Meters)
Uncrated Weight
Pounds (kg) Digit Size Max. Watts
DF-1012-10-R or A 1'3" x 3' x 6"
(0.39 x 0.89 x 0.16) 25 (10) 10 90
DF-1012-13-R or A 1'6" x 4' x 6"
(0.46 x 1.22 x 0.16) 27 (12) 13 100
DF-1012-18-R or A 2' x 5' x 6"
(0.61 x 1.53 x 0.16) 43 (20) 18 130
DF-1012-24-R or A 2' 6"x 6'6" x 6"
(0.77 x 1.99 x 0.16) 58 (26) 24 180

4 Mechanical Installation
2.3 Lifting the Display
Hand lift displays into the support structure.
Note: Daktronics assumes no liability for display damage or injury resulting from incorrect setup or incorrect
lifting methods.
2.4 Temperature and Light Sensor
Reference Drawings:
Time & Temp Power/Signal Hookup .......................................................Drawing A-938369
Installation, Temp Sensor, G3 ................................................................. Drawing A-184840
Shop Drawings.....................................................................................Refer to Appendix A
All displays in the DataTime®series use a light sensor to regulate dimming functions and a temperature
sensor to collect and display temperature information. Both temperature and light-monitoring electronics are
located in the sensor housing, shown in Figure 2.
The Daktronics Controller Area
Network (CAN) Temperature/Light
Sensor is pre-installed in a protective
housing. The assembly includes the
sensor, mounting bracket, and cabling
with a quick-connect plug. Instructions
that follow describe the placement
and connection of the device. Review
the wiring diagram and connection
illustration in Drawing A-184840 before
beginning.
Dimming involves decreasing overall
display intensity, both for better display
viewing and to prolong LED life. Set the
brightness level highest during the day
to compete with daylight, and lower at night.
Figure 2: Temperature Sensor Housing and Cabling

Mechanical Installation 5
Locating the Temperature Sensor
Refer to Figure 3, Figure 4, and Figure 5 for recommendations.
Recommendations and Requirements:
• First choice for the sensor location is a north eave or northern exposure, away from direct sunlight
and above grass. This location gives extra stability and accuracy to the sensor because of the
additional shade usually provided by a northern exposure.
• Second choice for locating the sensor is on the display itself, or somewhere on the display structure.
(This works best with light-colored displays.) Locate the sensor above, below, or on the northern edge
of the display to keep the sensor shaded as much as possible. Sensor readings are more accurate if
there is grass below the sign, rather than concrete or asphalt.
Things to Avoid:
• The sensor requires a location away from chimneys, air conditioners, vents, tar roofs, concrete, and
parking lots, all of which can cause abnormal temperature fluctuations and incorrect sensor readings.
For accurate readings under these conditions, keep a separation of at least 20-30 feet horizontally and
8 feet vertically between the sensor and the influential element.
• Locations that restrict air movement are also unsatisfactory.
• When a display has two faces, do not mount the sensor between the faces.
Connecting the Temperature Sensor
After properly locating the sensing device, follow these steps to connect it with the display:
1. The temperature sensor is equipped with outdoor-rated cable that has a four-pin quick-connect plug
on the end. Route the cable from the sensor to the back of display.
2. A four-pin quick-connect jack located on the back panel of the display connects the sensor cable to
the display. Refer to the Shop Drawing for the exact location of the jack on a particular model. Simply
plug in the sensor cable and tighten the connector collar to the display. A factory-installed internal
cable, runs from the sensor jack to the TB1 connector on the driver inside the housing.
First
State Bank
BANK HOURS
8 AM - 5 PM
Temperature Sensor Attached to
North Side of Display
Figure 3: Temperature Sensor Mounted
on Display
First
State Bank
BANK HOURS
8 AM - 5 PM
Temperature Sensor Attached to
Display Structure
Figure 4: Temperature Sensor Mounted
on Structure
Mounted under north eave
1/2” conduit
(supplied by customer)
Vegetation
1 ft.
▲
▼
Figure 5: Temperature Sensor
Mounted Under North Eave

6 Mechanical Installation
3. Secure any additional cable to prevent the quick-connect plug from being pulled out of the display
and to protect it from weather or vandalism.
Note: The temperature sensor is equipped with 25 feet (7.6 m) of cable. If necessary, the cable can be cut to
shorten and then be re-terminated. In addition, the cable can be extended by using a four-conductor shielded
cable to a distance of 750 feet (230 m). When not using the provided weather-resistant cable, the cable from
the sensor to the display needs to be in conduit.
Connection to the Sensor
If it is necessary to reconnect the wires to
the temperature sensor terminal block,
refer to Figure 6 and the table for the
correct connections.
Note: Make sure the power is off before
making any connections.
Connection from Sensor to the
Display Driver
If the distance from the temperature
sensor to the display is greater than the
provided 25 foot (7.6 m) cable, connect a 4-conductor shielded
cable from the sensor to TB1 on the display driver board.
1. The display’s power must be OFF when attaching the
internal sensor cable to the host driver.
2. Connect the temperature sensor to the terminal
block (TB1) on the host driver. Refer to Figure 7
and the table for the correct
connections.
14
+5V
H
L
G
0
8

GND - Black
CAN L - White
CAN H - Green
+5V - Red
CAN Temperature Sensor Wiring
Figure 6: Temperature Sensor Connection
Wiring to Temperature Sensor
Wire Color Terminal Block
Pin No. Function
Red Pin 1 5 V
Green Pin 2 CAN H
White Pin 3 CAN L
Black Pin 4 GND
+5V – Red
CAN H – Green
CAN L – White
GND – Black
14
+5V
H
L
G
+5V – Red
CAN H – Green
CAN L – White
Shield GND – Black
Pin 5
Pin 4 Pin 3
Pin 2
Temperature
Sensor
W-1234
CAN Temperature Sensor to MASC Driver
Figure 7: Temperature Sensor to Display Driver Connections
Connections from Temperature Sensor to Host Driver
Temperature Sensor (TB1) Wire Color Function Host Driver (TB1)
Pin 1 Red 5 V Pin 2
Pin 2 Green CAN H Pin 3
Pin 3 White CAN L Pin 4
Pin 4 Black GND Pin 5

Electrical Installation 7
Section 3: Electrical Installation
Only qualified individuals should perform power routing and termination to the display. It is the responsibility of the
electrical contractor to ensure that all electrical work meets or exceeds local and national codes. Improper installation
could result in serious damage to the equipment and be hazardous to personnel.
3.1 Preparing for Power/Signal Connection
Reference Drawing:
Time & Temp Power/Signal Hookup .......................................................Drawing A-938369
Electrical installation consists of the following process:
• Providing power and ground to a disconnect near the display.
• Routing power and ground from the main disconnect to the display driver/power enclosure.
• Connecting the display ground to a grounding electrode at the display location.
• Routing the control signal cable from the control location to the display location.
Drawing A-938369 provides detailed instructions for power and signal connections for time and temperature
displays, including connection of the temperature sensor and connections between host and client displays.
Refer to this drawing before completing any part of the electrical installation.
3.2 Power Connections
Daktronics DataTime®displays have removable or hinged front panels that allow access to the digits, cabling,
and other electronic components.
DataTime®outdoor displays require a dedicated, 120 V circuit (or 230 V for international use) for incoming
power. The display itself has no breakers or fuses.
WARNING: The display circuit must be fused at 15 A, and all conductors must be designed to pass a 15 A
current in normal operation. Failure to meet wiring and over current protection device requirements is a
violation of the National Electrical Code and will void the display’s warranty.
3.3 Grounding Connections
Reference Drawing:
Enclosed Driver, 4 Column Reference ....................................................Drawing A-938300
Displays MUST be grounded according to Article 250 of the National Electrical Code and according to
Daktronics specifications or the warranty will be void. Daktronics requires a resistance-to-ground of 10 ohms
or less.
The contractor performing the electrical installation must verify ground resistance. Technicians from
Daktronics Sales and Service offices can also provide this service.
Proper grounding is necessary for reliable equipment operation. It also protects the equipment from
damaging electrical disturbances and lightning. Drawing A-938300 illustrates where to connect the ground
wire at the driver enclosure.

8 Electrical Installation
Important points about grounding:
• Follow local and national codes: The material of an earth-ground electrode differs from region to
region and from conditions present at site. Consult any electrical codes that apply.
• Support structure cannot be used as an earth-ground electrode: Daktronics does not recommend
using the support structure as an earth-ground electrode; concrete, primer, corrosion, and other
factors make the support structure a poor ground.
• Note: The support structure may be used as an earth-ground electrode only if designed to do so. A
qualified inspector must approve the support structure and grounding methods.
• One grounding electrode for each display face
3.4 Power Installation
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 paragraphs:
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 disconnect. The National Electrical Cod requires the use
of a lockable power disconnect within sight of or at the display.
Installation With Only A Neutral Conductor Provided
Installations where no grounding conductor is provided must comply with Article 250-32 of the National
Electrical Code. If the installation in question meets all of the requirements of Article 250-32, 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.
3.5 Lightning Protection
Using a disconnect near the display to completely cut all current-carrying lines significantly protects the
circuits against lightning damage. For this system to provide protection, disconnect power when the display
is not in use.
Disconnect the DM-100 control console from power and from the signal J box when the system is not being
used. The same surges that may damage the display’s driver can also damage the DM-100 console’s circuitry.

Electrical Installation 9
3.6 Signal Connection
Reference Drawings
4 Column MASC Specications ..............................................................Drawing A-166216
Time & Temp Power/Signal Hookup .......................................................Drawing A-938369
Enclosed Driver, 4 Column Reference ....................................................Drawing A-938300
Route power and signal cables into the display from the side or rear. There are 7/8" knockouts for 1/2" conduit
fittings on the sides of all DataTime®cabinets and on the back
panels. All power and signal wiring terminates at the driver
enclosure.
Open the display cabinet by turning the latches on the hinged
doors. To access the driver enclosure, open the access door and
remove the cover. Refer to the Shop Drawings for the access
location for the display.
Refer to Drawing A-938300 for a complete review of power and
signal connections for direct connection to the displays. Drawing
A-166216 provides connection specifications for the four-column
drivers used in all DataTime®Time & Temperature displays.
Power and signal connections, illustrated in Figure 8, are similar
for both drivers.
Host/Client Denitions
Reference Drawings:
Multipurpose 4 Column LED Driver II Specications .............................. Drawing A-166216
Host/Client Denitions.............................................................................Drawing A-185236
One driver at each display installation is designated as the host driver, which receives its signal directly
from the DataMaster controller on its Signal IN terminals. It is the only driver that is connected to the photo/
temperature sensor. The Signal OUT terminals on the host connect to the client driver.
Select the host driver by inserting the Protocol-4 plug into the five-pin protocol jack (J20). Refer to Figure 9 or
Drawing A-166216 for location of the protocol jack.
With a time and temperature display there is usually only one host and one client. The client driver receives
signal from the host driver, and the client can re-drive this signal to other drivers.
0
8 7 6 5
TOP
8
ORG
7
N.C.
6
5
BRN
4
BLK OR SMOOTH
3
2 1
WHT OR GROOVED
TB4
120VAC
LINE
NEUT. GND
MAIN POWER
Transformer
Connect Earth
Ground Wire
Here
Signal
Connection
12V DC
Out
Power Supply
Surge Supression Board Driver Board
Power
Photo/Temp Sensor
Connection
Protocol
Jack
Address
Switch
Connect 120V
AC Line Here
Connect
Neutral Here
+++
SIGNAL
IN
TB3
SIGNAL
OUT
12V DC
OUT
SIGNAL OUT
–+
J1 24VDC
RADIO J2
SHIELD
–
+
SIGNAL IN
Figure 8: Power and Ground Wire Connections
Inside Display
0
8 7 6 5
TOP
8
ORG
7
N.C.
6
5
BRN
4
BLK OR SMOOTH
3
2 1
WHT OR GROOVED
Transformer
Power
Connections
Ground
Connection
Signal
Connection
12V DC
Out
Power Supply Surge Supression Board Driver Board
Power
Photo/Temp Sensor
Connection
Protocol
Jack
Address
Switch
TB4
120VAC
LINE
NEUT. GND
MAIN POWER
+++
SIGNAL
IN
TB3
SIGNAL
OUT
12V DC
OUT
SIGNAL OUT
–+
J1 24VDC
RADIO J2
SHIELD
–
+
SIGNAL IN
Figure 9: DataTime Driver Enclosure with 4-Column Driver

10 Electrical Installation
Direct – Outdoor Connection
Reference Drawings:
Riser Diagram, Outdoor Wire Control .....................................................Drawing A-164988
Time & Temp Power/Signal Hookup .......................................................Drawing A-938369
Enclosed Driver, 4 Column .....................................................................Drawing A-938300
A direct-controlled display uses a current loop connection from the J box at the base of the display to the
driver enclosure in the display. All the power and signal wiring terminates at the driver enclosure. The
DataMaster controller receives its power from the display. The display layout is shown in Drawing A-164988.
Note: The cable from the J box to the display needs to be routed through conduit or the display pole to protect
it from weather and vandalism.
1. Mount the J box at the display.
2. Select the host driver by inserting the Protocol-4 plug into the five-pin protocol jack (J20).
3. Route a six-conductor, 18 AWG, shielded signal cable through conduit from the J box to the driver
enclosure in the host display. Fifty feet (15.2 m) of signal wire is provided.
4. Connect the signal wire from the J box to the driver enclosure as shown in Figure 10 and listed in the
table. Refer to Drawings A-938369 and A-938300 for additional information.
SIGNAL OUT
–+
J1 24VDC
RADIO J2
SHIELD
–
+
SIGNAL IN
SIGNAL OUT
–+
J1 24VDC
RADIO J2
SHIELD
–
+
SIGNAL IN
+++
SIGNAL
IN
TB3
SIGNAL
OUT
12V DC
OUT
+++
SIGNAL
IN
TB3
SIGNAL
OUT
12V DC
OUT
GND GND
TB4
120VAC
LINE
NEUT.
MAIN POWER
TB4
120VAC
LINE
NEUT.
MAIN POWER
0
8 7 6 5
TOP
8
ORG
7
N.C.
6
5
BRN
4
BLK OR SMOOTH
3
2 1
WHT OR GROOVED
0
8 7 6 5
TOP
8
ORG
7
N.C.
6
5
BRN
4
BLK OR SMOOTH
3
2 1
WHT OR GROOVED
Grn
Wht
Red
Red
Brn
Blk
Blu
Blk
Power/Ground
Connections
Green
White
Brown
Blue
Black
Red
Red
Black
Black and Red =
Signal to Client Display
J-box
DM-100
Controller
1
2
3
4
5
6
7
8
9
Figure 10: Direct Connection from Outdoor Location

Electrical Installation 11
5. Mount the temperature sensor as described in Section 2.4, and connect the quick-connect cable to the
four-pin quick connect on the back of the display.
6. The DataMaster controller plugs into the J box using a DB9M to DB9F serial cable.
Direct – Indoor Connection
Reference Drawings:
Riser Diagram, Indoor Wire Control........................................................Drawing A-175342
Time & Temp Power/Signal Hookup .......................................................Drawing A-938369
Enclosed Driver, 4 Column .....................................................................Drawing A-938300
A direct-controlled display can also be used from a J box at in indoor location. In that case, only two, 22
AWG, signal wires will need to be connected to the J box and a wall pack transformer will be used for power
to the DataMaster controller. The distance from the indoor J box to the host driver can be up to 2,000 ft (600
m). Refer to Figure 11 and Drawing A-175342 for system layout and signal connections.
1. Mount the J box at an indoor location.
2. Select the host driver by inserting the Protocol-4 plug into the five-pin protocol jack (J20).
3. Route a four-conductor, 18 AWG, shielded signal cable through conduit from the J box to the driver
enclosure in the host display.
Wiring from J-Box to Host Driver Enclosure
J-Box Pin Number Cable Color Enclosure Terminal Block
Pin 1 Red 12 V DC Out (+)
Pin 5 Black 12 V DC Out (-)
Pin 5 White Signal IN (-)
Pin 6 Green Signal IN (+)
Pin 8 Brown Signal OUT (+)
Pin 9 Blue Signal OUT (-)

12 Electrical Installation
4. Connect the signal wire, through conduit, from the J box to the driver enclosure as shown in Figure
11 and listed in the table. Refer to Drawings A-938369 and A-938300 for additional information.
5. Mount the temperature sensor according to Section 2.4, and connect the quick-connect cable to the
four-pin quick connect on the back of the display.
6. The DataMaster controller plugs into the J box using a DB9M to DB9F serial cable.
7. Plug the wall pack transformer into a wall socket and the other end into the DM-100 controller.
8. Client Definitions and Address Settings
Reference Drawings:
Multipurpose 4 Column LED Driver II Specications .............................. Drawing A-166216
Host/Client Denitions.............................................................................Drawing A-185236
One driver at each display installation is designated
as the host driver, and all other displays are clients.
The Signal OUT terminals on the host are used to
connect to the client drivers. Refer to Figure 12 and
Drawing A-185236 for an illustration of the client/
host display connection.
Client drivers receive signal from the host driver on
SIGNAL OUT
–+
J1 24VDC
RADIO J2
SHIELD
–
+
SIGNAL IN
+++
SIGNAL
IN
TB3
SIGNAL
OUT
12V DC
OUT
GND
TB4
120VAC
LINE
NEUT.
MAIN POWER
0
8 7 6 5
TOP
8
ORG
7
N.C.
6
5
BRN
4
BLKOR SMOOTH
3
2 1
WHTOR GROOVED
Black and Red =
Signal to Client Display
DM-100
Controller
Plug-in
Transformer
120 VAC
SIGNAL OUT
–+
J1 24VDC
RADIO J2
SHIELD
–
+
SIGNAL IN
+++
SIGNAL
IN
TB3
SIGNAL
OUT
12V DC
OUT
GND
TB4
120VAC
LINE
NEUT.
MAIN POWER
0
8 7 6 5
TOP
8
ORG
7
N.C.
6
5
BRN
4
BLKOR SMOOTH
3
2 1
WHTOR GROOVED
Grn
Wht
Red
Brn
Blk
Blu
Power/Ground
Connections
Green
White
Brown
Blue
Black
Red
J-box
1
2
3
4
5
6
7
8
9
Figure 11: Direct Connection from Indoor Location
Wiring from Indoor J-Box to Host Driver Enclosure
J-Box Pin Number Cable Color Enclosure Terminal Block
Pin 5 White Signal IN (-)
Pin 6 Green Signal IN (+)
Pin 8 Brown Signal OUT (+)
Pin 9 Blue Signal OUT (-)
+++
TB3
+++
TB3
Red
Black
Host Display Client Display
Figure 12: Host, Signal Out to Client, Signal In

Electrical Installation 13
the Signal IN terminals and can re-drive this signal to other client drivers on the Signal OUT terminals.
The maximum wire distance between the host driver and client driver is 2,000 feet.
Some multiple-module DataTime®displays use host/client displays, which do not contain a driver and may
use either client or host digit outputs. The DF-1012 model uses the host/client configuration.
Address Settings
The address of each driver is set using an eight-position DIP-switch
(S1), and the address is based on that driver’s position in the display
system. If a single-line display is used, the address will typically be
Address 01. This means that switch 1 is turned ON and the remaining
7 switches are in the OFF position. This is the default address set
when each display is shipped. In multiple-product displays, the
address determines which line of information is shown on the driver’s
digits. The switch is set using a binary address. Use the table and the
examples in Figure 13 for setting the address.
Note: Some older drivers set the address of each driver using an
address plug (Daktronics part # 0A-1150-0122) in J19. The address,
either using a switch or a plug, needs to be set for each driver.
OFF
ON
12345678
Address 1
OFF
ON
12345678
Address 2
OFF
ON
12345678
Address 3
OFF
ON
12345678
Address 4
Figure 13: Common Address Settings
Binary Address Settings
Address Switch Number
12345678
1ON OFF OFF OFF OFF OFF OFF OFF
2OFF ON OFF OFF OFF OFF OFF OFF
3ON ON OFF OFF OFF OFF OFF OFF
4OFF OFF ON OFF OFF OFF OFF OFF
5ON OFF ON OFF OFF OFF OFF OFF
6OFF ON ON OFF OFF OFF OFF OFF
7ON ON ON OFF OFF OFF OFF OFF
8OFF OFF OFF ON OFF OFF OFF OFF
9ON OFF OFF ON OFF OFF OFF OFF
10 OFF ON OFF ON OFF OFF OFF OFF
11 ON ON OFF ON OFF OFF OFF OFF
12 OFF OFF ON ON OFF OFF OFF OFF
13 ON OFF ON ON OFF OFF OFF OFF
14 OFF ON ON ON OFF OFF OFF OFF
15 ON ON ON ON OFF OFF OFF OFF

Maintenance and Troubleshooting 15
Section 4: Maintenance and Troubleshooting
Important Notes:
• Disconnect power before doing any repair or maintenance work on the display.
• Allow only qualified service personnel access to internal display electronics.
• Disconnect power when not using the display.
4.1 Component Location and Access
Reference Drawings:
Shop Drawings.....................................................................................Refer to Appendix A
Each display contains an enclosure that includes the following devices:
• Display Driver
• 24V DC Power Supply
• 10V AC Transformer
• Signal Surge Board
• Signal/Power Input Termination Jacks
On 10"and 13" displays, all the components are behind one door. For 18" and 24" displays, the hinged doors
swing outward when the two latches on the front display face panel are turned, as shown in Figure 14. Since
component placement varies slightly with each DataTime®model; consult the specific model’s Shop
Drawings.
0
8 7 6 5
TOP
8
ORG
7
N.C.
6
5
BRN
4
BLKOR SMOOTH
3
2 1
WHTOR GROOVED
TB4
120VAC
LINE
NEUT. GND
MAINPOWER
+++
SIGNAL
IN
TB3
SIGNAL
OUT
12V DC
OUT
SIGNALOUT
–+
J1 24VDC
RADIO J2
SHIELD
–
+
SIGNALIN
Temperature Sensor Input
Driver Enclosure
Hinged Door
(Swings Outward)
Digit Circuit Boards
(Mounted to Doors)
Figure 14: Time and Temp Display with Door Panels Open

16 Maintenance and Troubleshooting
4.2 Troubleshooting
This section lists potential problems with the display, indicates possible causes, and suggests corrective
actions. This list does not include every possible problem, but it does represent some of the more common
situations that may occur. (Refer to the appropriate manual for a list of potential problems with an add-on or
separately mounted Galaxy®display.)
Symptom/Condition Possible Cause
Entire display fails to work
• Check for proper line voltage at power termination panel
• Check connections from power supply to driver.
• Check power LED on driver.
Cannot communicate with display
• Check connections at J-box and display.
• Make sure DataMaster controller is receiving power.
• Check serial wires from J-box to host driver.
No display on client sign
• Check for power on client.
• Check signal wires from host to client.
• Make sure protocol plug is not connected. (Protocol plug for host
driver only.)
• Check addressing of client display.
Client drivers will continually cycle through
the power-on self-test host driver. • Make sure address is set on the
Garbled display
• Power down and power display back up.
• Check connections from driver to digits.
• Re-send message from DM-100.
Digit will not light
• Test using different digit board in display.
• Test using a different output from the driver.
• Black wire to digit broken.
• Poor contact at driver connection.
• Driver malfunction.
Segment will not light
• Test using output to different segment.
• Check for broken LED or connection.
• Check wires between driver and digit.
• Poor contact at driver connector.
• Driver shift register failure.
Segment stays lit
• Test using output to different segment.
• Check for shorts on wires.
• Driver shift register failure.
Data appears in the wrong place on the
display, wrong data on a particular line of
the display
• Incorrect address settings on drivers. (Refer to “Power-On Self-Test” in
the following section.)
• Incorrect connection from driver to digits.