Black Box MT618A-ST-R2 User Manual
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Black Box MT618A-ST-R2 User Manual

Black Box MT618A-ST-R2 User Manual

T3 fiber optic line driver
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T3 Fiber Optic Line Driver
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
SEPTEMBER 2002
MT618A-ST-R2
MT619A-ST-R2

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  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 FCC AND IC RFI STATEMENTS FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS 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 been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference when the equipment is...
  • Page 3 T3 FIBER OPTIC LINE DRIVER NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT 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.
  • Page 4 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 salen del aparato.
  • Page 5 T3 FIBER OPTIC LINE DRIVER TRADEMARKS USED IN THIS MANUAL ST is a registered trademark of American Telephone and Telegraph Company. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 6: Table Of Contents

    5.4 Calling Black Box ........

  • Page 7: Quick Start Guide

    T3 FIBER OPTIC LINE DRIVER Quick Start Guide If you’re familiar with the T3 Fiber Optic Line Driver, use this guide to prepare the unit for operation. Installation Open the T3 Fiber Optic Line Driver’s case by unscrewing the two rear-panel screws and sliding out the unit’s printed circuit board (PCB).
  • Page 8 QUICK START GUIDE ONNECTING THE ABLES 1. Connect the T3 electrical interface. 2. Connect the fiberoptic interface. 3. Connect the power cable (first to the modem, then to the mains supply). Operation starts when the power is applied to the rear-panel power connector.

  • Page 9: Specifications

    Transmission Rates: 44.736 Mbps Impedance: 75 Ω unbalanced Zero Suppression: B3ZS Connectors: (2) BNC Fiberoptic Interface Operating Wavelength: MT619A-ST-R2: 850 nm (multimode); MT618A-ST-R2: 1310 nm (single-mode) Line Coding: CDP Connectors: (2) ST ® Typical Power: See Table 2-1 Receiver Sensitivity: See Table 2-1...
  • Page 10 CHAPTER 1: Specifications Operation: Normally Open and Normally Closed, using different pins Indicators POWER: Power LOC: A local loopback is active REM: A remote loopback is active ELECTRICAL LOW: T3 electrical input is below G.703 ELECTRICAL AIS: T3 electrical interface received “All 1s” string OPTICAL ERR: Bit error rate of the signal received from the optical interface is or worse OPTICAL AIS: Fiberoptic interface received “All 1s”...

  • Page 11: Introduction

    2.1.1 V ERSIONS Two versions are available: • T3 Fiber Optic Line Driver ST, 1310-nm Single-Mode (MT618A-ST-R2) • T3 Fiber Optic Line Driver ST, 850-nm Multimode (MT619A-ST-R2) 2.1.2 A PPLICATION In the application shown in Figure 2-1, each line driver receives T3 signals, which are equalized to overcome electrical link distortion.

  • Page 12: Features

    CHAPTER 2: Introduction 2.1.3 F EATURES • Extend the range of T3 signals over fiberoptic cable up to 68.35 miles (110 km). • Transparent to T3 signals. • Conform with all relevant ITU series standards. • Supports single-mode or multimode fiber. •...

  • Page 13: Physical Description

    T3 FIBER OPTIC LINE DRIVER Likewise, an alarm is relayed if a high bit-error rate is detected at the fiberoptic interface. 2.2 Physical Description Figure 2-2. The front panel. The line driver’s front panel features LEDs that display T3 electrical and fiberoptic interface status.

  • Page 14: Functional Description

    CHAPTER 2: Introduction 2.3 Functional Description T3 Electronic Interface Fiberoptic connectors connectors Figure 2-3. T3 Fiber Optic Line Driver block diagram. The T3 Fiber Optic Line Driver has the following signal-processing modules: • Signal conversion (see Section 2.3.1) • Data/clock recovery (see Section 2.3.2) •...

  • Page 15: Installation And Setup

    • T3 Fiber Optic Line Driver • AC power cord • This users’ manual If anything is missing or damaged, please contact Black Box at 724-746-5500. 3.3 Installation The line driver is a standalone device intended for tabletop or bench installation.

  • Page 16: Setting The Internal Jumpers

    CHAPTER 3: Installation and Setup 2. Connect the T3 electrical interface (see Section 3.3.2). 3. Connect the fiberoptic interface (see Section 3.3.2). 4. Connect power to the line driver. 3.3.1 S ETTING THE NTERNAL UMPERS This section provides information on the functions of the line driver’s jumpers and gives step-by-step instructions for performing the internal settings.
  • Page 17 T3 FIBER OPTIC LINE DRIVER CAUTION The T3 Fiber Optic Line Driver contains components sensitive to electrostatic discharge (ESD). To prevent ESD damage, avoid touching the internal components. Before moving jumpers, touch the line driver’s frame. To open the line driver’s case, unscrew the two rear-panel screws and slide out the line driver’s printed circuit board.
  • Page 18 CHAPTER 3: Installation and Setup T3 Interface Board Figure 3-1. Main board layout.
  • Page 19 T3 FIBER OPTIC LINE DRIVER Table 3-1. Main board jumper settings. Jumper Description Values Factory Setting Controls the AIS On—AIS is transmitted. transmission to the Off—AIS is not electrical or optical transmitted. interface when a minor alarm is detected. Setting the T3 interface board jumpers The line driver’s T3 interface board features jumpers (JP1–JP3) that are used for selecting the T3 cable length.

  • Page 20: Connecting The Interfaces

    CHAPTER 3: Installation and Setup NOTE The maximum cable length complies with ITU-T G.703. Closing the case Once you finish the internal settings, close the line driver’s case. 1. Slide the printed circuit board back into the case. 2. Screw in the two rear-panel screws that fasten the main board to the case. 3.3.2 C ONNECTING THE NTERFACES...

  • Page 21: Connecting The Power

    T3 FIBER OPTIC LINE DRIVER Connecting the fiber optic interface The line driver’s fiberoptic interface is terminated in ST connectors (TX and RX). 1. Remove the connectors’ protective caps and store them in a safe place for later use. 2. Connect the transmit fiber to the TX connector and the receive fiber to the RX connector.

  • Page 22: Operation

    CHAPTER 4: Operation 4. Operation 4.1 Front-Panel Indicators and Controls The indicators on the front panel can be seen in Figure 4-1. The functions of these indicators are described in Table 4-1. LEDs are called out with numbers and switches are called out with letters. TEST OPTICAL ELECTRICAL...

  • Page 23: Operating The Line Driver

    T3 FIBER OPTIC LINE DRIVER Table 4-1 (continued). Indicator functions. Name Type Function 6. OPTICAL ERR Red LED On—Bit-error rate of the signal received from the optical interface is or worse. 7. OPTICAL AIS Yellow LED On—Fiberoptic interface received “All 1s” string. 4.2 Operating the Line Driver 4.2.1 P OWERING...

  • Page 24: Diagnostics And Troubleshooting

    CHAPTER 5: Diagnostics and Troubleshooting 5. Diagnostics and Troubleshooting 5.1 Alarm Relay The T3 Fiber Optic Line Driver includes a dry-contact alarm-relay port for most major and minor alarms. • Major alarms are initiated when a) T3 electrical input becomes lower than G.703 electrical levels or b) bit-error rate at the fiberoptic interface is 10 worse.

  • Page 25: Diagnostic Loopbacks

    T3 FIBER OPTIC LINE DRIVER 5.2 Diagnostic Loopbacks 5.2.1 L (LLB) OCAL OOPBACK Local loopback tests the performance of the T3 electrical interface of the local line driver and the equipment attached to it. The data received at the T3 electrical interface is looped back to the line driver attached to it (see Figure 5-2).

  • Page 26: Troubleshooting

    CHAPTER 5: Diagnostics and Troubleshooting REM POSITION COAX FIBER Local T3 Remote T3 Fiber Optic REMOTE T3 BERT T3/E3 LOCAL FOM Fiber Optic Line Driver BERT T3/E3 Line Driver T3/E3 Figure 5-3. Remote loopback illustrated. To activate remote loopback, slide the local line driver’s TEST switch to the REM position.
  • Page 27 T3 FIBER OPTIC LINE DRIVER Table 5-1 (continued). Troubleshooting chart. Trouble Symptoms Probable Cause Corrective Measures ELECTRICAL LOW One of the T3 Make sure that both ends of the T3 indicator is On. coaxial cables is coaxial cables are connected defective or correctly and that the cables disconnected.

  • Page 28: Calling Black Box

    • Package it carefully. We recommend that you use the original container. • If you are shipping the T3 Fiber Optic Line Driver for repair, make sure you include everything that came in the original package. Before you ship, contact Black Box to get a Return Authorization (RA) number.
  • Page 29 © Copyright 2002. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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Mt619a-st-r2T3 fiber optic line driver

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