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Black Box 39005 manual

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Table of contents for the manual

  • Page 1

    CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mail order: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com MARCH 200[...]

  • Page 2

    1 FCC INFORMATION FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO FREQUENCY INTERFERENCE ST A TEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has[...]

  • Page 3

    2 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY ST A TEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3. [...]

  • Page 4

    3 NOM STATEMENT 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde sal[...]

  • Page 5

    4 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR General Safety Precautions T ransport, Installation, and Operation • Avoid excessive vibration and shocks. • Avoid contact with water and dust. • Avoid excessive direct sunlight. • Ensure sufficient cooling. • Prevent loose items from falling into the device. Fiber Optics • Looking into the fiber[...]

  • Page 6

    5 TRADEMARKS TRADEMARKS USED IN THIS MANUAL ST ® is a registered trademark of American Telephone and Telegraph Company. Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.[...]

  • Page 7

    6 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR Contents 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 8

    7 CHAPTER 1: Specifications 1. Specifications Maximum Distance— 39004: 3 mi. (4.8 km) @ 16 dB; 39005: 24 mi. (38.6 km) @ 16 dB Speed —1.544 Mbps Interface —DTE: T1, G.703/DS1; Fiber: Dual ST ® multimode or single-mode Connectors —DB15 for DTE, dual ST for fiber Indicators and Buttons —(6) LEDs: TX, RX, FO/S, C, LL, DL; (1) Loop mode butt[...]

  • Page 9

    8 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR 2. Introduction 2.1 Description The T1 Fiber Optic Line Extender/Simulator lets you combine fiber optic technology with standard interfaces at 1.544 Mbps. The advantages are increased transmission distances and immunity to electrical interference. Connections between buildings become possible since no lightn[...]

  • Page 10

    9 CHAPTER 3: Connectors, Indicators, and Controls 3. Connectors, Indicators, and Controls Figure 3-1. Front and Rear Panels. T able 3-1. Connectors, Indicators, and Controls No. Connector , Indicator , or Control 1 TX LED: Transmitting binary 0 via fiber optic 2 G.703 connector 3 FO/S LED: Power/FO Link/sync 4 LL LED: Unit in line loop mode* 5 DL L[...]

  • Page 11

    10 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR 4. Setup Figure 4-1. Location of Jumpers on the Printed Circuit Boar d. Main board Front panel Back panel[...]

  • Page 12

    11 CHAPTER 4: Setup T able 4-1. Key , Jumper , and Switch Settings Number Setting Description 1 Loop Mode Key: Press the key switches through the following operating modes: Normal operation, Digital loop, Remote loop. The unit enters loop mode when the distant modem gets switched to remote loop. 2 Clock Source Internal Remote External 3 Interface S[...]

  • Page 13

    12 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR T able 4-1 (continued). Key , Jumper , and Switch Settings Number Setting Description 8 Sample mode for incoming intermediate frequency (I/F) data Data sampled on positive clock edge (std.) Data sampled on negative clock edge 9 Interface Mode NT (Network Termination) TE (Terminal Equipment) 10 Interface Pin[...]

  • Page 14

    13 CHAPTER 4: Setup Clock Mode Comments: • Internal: The clock is generated by the internal clock generator. • External: The clock is provided by the local equipment. • Remote: The local modem receives the clock via the link from the distant modem. The distant modem must be set to Internal or External. Figure 4-2. Possible Synchronous Clock C[...]

  • Page 15

    14 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR 5. Data Signals Figure 5-1. Data Signals at Nor mal Mode. Figure 5-2. Data Signals at Digital Loop Mode. Distant fiber optic modem Local fiber optic modem in normal mode Local fiber optic modem in digital loop mode Distant fiber optic modem[...]

  • Page 16

    15 CHAPTER 5: Data Signals Figure 5-3. Data Signals at Remote Loop/Line Loop Mode. T able 5-1. G.703 Pinout (Female) Pin Signal T erminal End Network T ermination 2 R A Input Output 4 T A Output Input 9 R B Input Output 11 T B Output Input Figure 5-4. G.703 Connector . Local fiber optic modem switched to remote loop mode Fiber optic modem forced to[...]

  • Page 17

    16 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR Appendix: Fiber Optic Planning Guidelines A.1 Introduction Designing a fiber optic link means considering two main physical limitations: System attenuation and fiber optic dispersion. Attenuation results when properties of the fiber optic link reduce the intensity of the fiber optic signals. Dispersion occu[...]

  • Page 18

    17 A.2 Fiber Optic Calculation S TEP 1: A TTENUATION C ONSIDERATIONS Figure A-1 shows the various elements of the fiber optic link that decrease light intensity. Depending on the real installation, you must subtract a series of attenuation (att.) values from the raw optic output level of the fiber optic transmitter. The remainder of the originally [...]

  • Page 19

    18 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR (max, cable [2] att.)=(fiber optic power budge) - (right part att.) = 17 dB - 12 dB = 5 dB. (max. cable [2] length) = (max.cable [2] att.)/(cable [2] att. factor) = 5 dB/3 dB/km = 5.6 km Example 2: Maximum length of cable [2] when connected directly (without splices, etc.): (max. cable [2] length) = (fiber [...]

  • Page 20

    19 APPENDIX: Fiber Optic Planning Guidelines S TEP 2: O VERALL O PERATION C ONSIDERATIONS The operation diagram ( Figure A-2 ) shows one example diagram and one blank diagram to be completed based on real values: 1. Draw horizontal lines at the min. and max. value of the fiber optic pulse width* of the affected units. 2. Calculate the maximum total[...]

  • Page 21

    20 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR Figure A-2. Operation Diagram[...]

  • Page 22

    21 Use the example on the previous page as a reference when filling in information for your application below. Figure A-3. Y our Application. APPENDIX: Fiber Optic Planning Guidelines[...]

  • Page 23

    1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2000. Black Box Corporation. All rights reserved.[...]