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Summary of Contents for Daktronics ED-14743
- Page 1 Fiber Optic Communication Manual Installation, Maintenance, & Troubleshooting ED-14743 Rev 1 11 October 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...
- Page 2 – graphic, electronic, or mechanical, including photocopying, taping, or information storage and retrieval systems – without written permission of the publisher. ® Galaxy is a registered trademark of Daktronics, Inc. All others are trademarks of their respective companies.
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Page 3: Table Of Contents
Table of Contents Introduction..........................1 Network Concepts........................1 System/Cable Requirements................... 1 Component Identification....................1 Installation..........................2 Signal Termination Between Displays ..................3 Primary - Mirror ......................3 Primary – Primary (RS422).................... 4 Primary – Primary (Fiber) ....................5 Replacement of the Fiber Optic Board..................6 Alternate Location Installation....................7 Troubleshooting .........................8 Signal Converter...................... -
Page 5: Introduction
A signal converter is needed to convert the computer’s RS232 signal to fiber optic signal; a minimum of two fibers is required. The cable is usually a 4-fiber cable (Daktronics part number W-1376). Two fibers are used for display communications and the other two are saved for spares. The cable may be either direct burial or routed in conduit, but it should not be subjected to mechanical flexing. -
Page 6: Installation
1. The control computer connects to the signal converter (Daktronics part number 0A- 1127-0256) through a DB9 to DB25 serial cable (W-1249). 2. From the signal converter, fiber cable (Daktronics part number W-1376) is run to the fiber optic board in the weather resistant enclosure at the display. (In certain cases, the display may be ordered with the fiber optic board mounted in the display. -
Page 7: Signal Termination Between Displays
5. For displays with an internal fiber optic board only: Route the fiber cable into the back of the display, being careful not to damage any interior components. Make the connections to the fiber optic board as normal. Figure 3: Signal Converter to Fiber Optic Enclosure Signal Converter to Display Fiber Optic Board Signal Converter Field Cabling... -
Page 8: Primary - Primary (Rs422)
Figure 5: Display Interconnect Figure 4: Quick Connect Boards Primary – Primary (RS422) If your location requires two displays that cannot be mounted back-to-back, two primary displays will need to be installed. Those displays can be connected using an RS422 signal cable or by fiber. In the case of RS422, the following connections will need to be made: 1. -
Page 9: Primary - Primary (Fiber)
5. See the instructions for the Optional Temperature Sensor in the appendix of the display manual for connections that need to be made for the temperature sensor termination. Primary – Primary Interconnect Cable Face A – RS422 Field Face B – RS422 OUT (TB3) Cabling IN (TB2) -
Page 10: Replacement Of The Fiber Optic Board
sensor termination. Fiber Optic Board (Primary 1) to Fiber Optic Board (Primary 2) Fiber Optic Board Field Cabling Fiber Optic Board J3 Receive (RX2) (Color varies) J4 Transmit (TX1) J2 Transmit (TX2) (Color varies) J5 Receive (RX1) Replacement of the Fiber Optic Board The following directions are to replace a fiber optic board in the signal termination enclosure mounted at the display. -
Page 11: Alternate Location Installation
1. Route the fiber through conduit to the back of the display. Use one of the knockouts for access, being careful not to damage any internal components. 2. Connect two fiber lines of the fiber cable (Daktronics part number W-1376) from the signal converter to the fiber optic board. Always connect receive on the signal converter to transmit (J5) on the fiberboard and transmit at the signal converter to receive (J4) on the fiber optic board. -
Page 12: Troubleshooting
Troubleshooting Signal Converter The following table gives the typical state of the signal converter when the LEDs are either on or off. Refer to for an illustration of the signal converters and the Figure 10 locations of the various components. Typical States Troubleshooting Indicators... -
Page 13: Loop-Back Test With Fiber
2. Label the fiber ends connected to the board and carefully remove them as shown in Figure 11 3. Connect the ends into the fiber splice (Daktronics part# P- 1197), as shown in Figure 12 4. When the fibers are connected, perform the loop-back test... - Page 14 3. Right click on the network you want to Test. 4. Click on [Test]. 5. If the Transmit LED on the signal converter flickers the signal is getting to the signal converter. That means that the right Com port is being used, however if it does not flicker there is either a software or hardware problem with the computer.
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Page 15: Replacement Parts List
The following table contains some of the items that may need to be replaced over a period of time. Many of the parts also have their part numbers on labels affixed to them. To prevent theft, Daktronics recommends purchasing a lockable cabinet to store manuals and replacement/spare parts. -
Page 17: Appendix A: Reference Drawings
Appendix A: Reference Drawings The following drawings are listed in numerical order by size (A, B, etc.). Those drawings are listed according to size. System Riser Diagram, Comm Box, Fiber, QC .......Drawing A-211735 Controller II, Galaxy, 8-conn, J1087..........Drawing B-204771 Schem;...
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