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Black Box LMX Series User Manual
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Black Box LMX Series User Manual

Black Box LMX Series User Manual

Asynchronous 4-port multiplexor
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APRIL 1999
38888
LMX Series
(Asynchronous 4-Port Multiplexor)
CUSTOMER
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

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Summary of Contents for Black Box LMX Series

  • 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 TRADEMARKS TRADEMARKS USED IN THIS MANUAL UL is a registered trademark of Underwriters Laboratories Incorporated. Any other trademarks used in this manual are acknowledged to be the property of the trademark owners.
  • Page 3 LMX SERIES (ASYNCHRONOUS 4-PORT MULTIPLEXOR) FEDERAL COMMUNICATIONS COMMISSION CANADIAN DEPARTMENT OF COMMUNICATIONS 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.
  • Page 4 NOM STATEMENT 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 5 LMX SERIES (ASYNCHRONOUS 4-PORT MULTIPLEXOR) 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...

  • Page 6: Table Of Contents

    CONTENTS Contents Chapter Page 1. Specifications......................6 2. Introduction ......................8 2.1 Overview ......................8 2.2 Features ......................8 2.3 What’s Included ....................8 2.4 Performance ....................9 3. Installation ......................10 4. Port Interface......................11...

  • Page 7: Specifications

    LMX SERIES (ASYNCHRONOUS 4-PORT MULTIPLEXOR) 1. Specifications Multiplexing Technique — Bit-interleaved, time division, asynchronous, full duplex Sub-Channel Characteristics Number of Sub-Channels — Up to four Data Rate — Up to 64 Kbps Codes — Unrestricted and protocol-transparent Transmission Delay —...
  • Page 8 CHAPTER 1: Specifications General Specifications Compliance — FCC Part 15, Class A; Wallmount power supply: UL ® LED Indicators — Power, Sync, Composite Data Power Requirements — 115 VAC ±10%, 60 Hz @ 0.2 Amp maximum (Std.); 230 VAC ±10%, 50 Hz @ 0.2 Amp maximum (Optional) Operating Temperature —...

  • Page 9: Introduction

    The LMX allows for interconnection of up to four local clustered terminals operating at asynchronous data rates up to 64 Kbps. The LMX Series Multiplexor is an ideal low-cost alternative to more expensive statistical multiplexors and leased-line modems. Ideal applications are in a building, in a campus setting, or in a factory environment using fiber optic cable.

  • Page 10: Performance

    CHAPTER 2: Introduction 2.4 Performance Synchronization between units is maintained continuously with no operator control required. A “SYNC ERROR” indicator, located on the front of the unit, will turn on, alerting you if loss of sync occurs. In operation, the LMX automatically adapts port speeds to the rates of the individual terminals.

  • Page 11: Installation

    LMX SERIES (ASYNCHRONOUS 4-PORT MULTIPLEXOR) 3. Installation SUB-CHANNEL PORTS POWER To Optical Fiber To Sub-Channels To Power Figure 3-1. Rear View and Fiber Connections.

  • Page 12: Port Interface

    CHAPTER 4: Port Interface 4. Port Interface Use the tables below for proper connection from sub-channels to the DTE equipment. Figure 4-1. LMX Sub-Channel Connector. Table 4-1. Port Interface Pinout Direction Name RJ-45 Data Set Ready output Data Carrier Detect output Signal Ground ——...
  • Page 13 © Copyright 1999. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...