Instruction/ maintenance manual of the product 39004 Black Box
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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.
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.
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.
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 .
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.
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.
6 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR Contents 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
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.
20 T1 FIBER OPTIC LINE EXTENDER/SIMULATOR Figure A-2. Operation Diagram.
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.
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2000. Black Box Corporation. All rights reserved..
An important point after buying a device Black Box 39004 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Black Box 39004 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Black Box 39004 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Black Box 39004 you will learn all the available features of the product, as well as information on its operation. The information that you get Black Box 39004 will certainly help you make a decision on the purchase.
If you already are a holder of Black Box 39004, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Black Box 39004.
However, one of the most important roles played by the user manual is to help in solving problems with Black Box 39004. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Black Box 39004 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
