LMX Series (Asynchronous 16-Port Multiplexor)
Contents
1. ante El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato A gt LMX SERIES ASYNCHRONOUS 16 PORT MULTIPLEXOR 12 13 14 15 16 17 18 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 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 atenci n a los contactos y recept culos donde salen del aparato El equipo2. ary high speed data sampling on each port allows the unit to follow any changes so the unit is transparent to error control EIA propagation and flow control The effective range is 3300 feet using 24 gauge wire Using a larger gauge wire will increase the distance depending upon the size Figure 2 1 Typical Application LMX SERIES ASYNCHRONOUS 16 PORT MULTIPLEXOR 3 Installation LMA Series PAR RAD SYNC Figure 3 1 Front View IX To 4 Wire Line To Sub Channels To Power Two Twisted Pairs NS ah Figure 3 2 Rear View and Composite Connections o CHAPTER 4 Port Interface A 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 Signal Ground 102 7 Table 4 2 RS 232 Reference Interface Aaa PU input 4 Clear To Send CB input oupa 5 8 Data SetReady CC input output 6 6 Signal Ground ABs 7 5 Data Carrier Detect CF input output 8 1 C CF Data Terminal Ready lt BLACK BOX Copyright 1999 Black Box Corporation All rights reserved 1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746
3. ch case the user at his own expense will be required to take whatever measures may be necessary to correct the interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of Industry Canada Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la classe A prescrites dans le R glement sur le brouillage radio lectrique publi par Industrie Canada 10 11 NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado Las instrucciones de seguridad y operaci n deber n ser guardadas para referencia futura Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas Todas las instrucciones de operaci n y uso deben ser seguidas El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de ba o lavabo s tano mojado o cerca de una alberca etc El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabric
4. eee APRIL 1999 38891 lt BLACK BOX LMX Series Asynchronous 16 Port Multiplexor LMX Series PAR RAD SYNC 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 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 LMX SERIES ASYNCHRONOUS 16 PORT MULTIPLEXOR FEDERAL COMMUNICATIONS COMMISSION AND 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 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 operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in whi
5. el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante En caso de existir una antena externa deber ser localizada lejos de las lineas de energia El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido ha sido derramado dentro del aparato o C El aparato ha sido expuesto a la lluvia o D El aparato parece no operar normalmente o muestra un cambio en su desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada CONTENTS Contents Chapter Page Ty HIDE Cll CAMA eiii 6 gt AA SE esas ces ceased ater orate acces daa uate a had aban een tarot 8 DN OR rae Wiese aa i erste ese ree O A II tela 8 ES E L a o AE ET ETAT O RAN 8 29 A AE 8 2 24 AS A II A E NR 9 A O IS Ne 10 as A 11 LMX SERIES ASYNCHRONOUS 16 PORT MULTIPLEXOR 1 Specifications Multiplexing Technique Sub Channel Characteristics Number of Sub Channels Data Rate Codes Transmission Delay Interface Bit interleaved time division asynchronous full duplex Up to sixteen Up to 19 2 kbps Unrestricted and protocol transparent Less than 0 02 m
6. inals operating at asynchronous data rates up to 19 2 kbps The internal line driver allows for limited distance communications over private in house four wire point to point cable systems at a range of up to 3300 feet 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 twisted copper pairs 2 2 Features e Up to 16 async sub channels e Sub channel data rates up to 19 2 kbps e Speed and protocol transparent e Range up to km on copper e Plug in installation no option switches to set 2 3 What s Included Here s what you should have received 1 LMX Series Asynchronous 16 Port Multiplexor with wire interface 1 External transformer 1 User s manual E 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 No clock source is required The multiplexor s unique method of maintaining synchronization minimizes the number of overhead bits from the data stream All ports operate at maximum throughput levels with virtually no multiplexing delay As DTE speeds v
7. sec EIA TIA 561 Modular RJ 45 Std EIA TIA RS 232 C CCITT V 24 Adapter Optional Composite Link Characteristics LMX Electrical Interface Line Interface Line Type Transmission Range Composite Data Rate Output Format Output Level Input Resistance Four terminal connector block Four wire cable two unloaded twisted pairs DC continuity required 3300 feet 1006 m on a 24 AWG 1 25 Mbps maximum aggregate throughput Balanced bipolar 6V p p 100 ohm load 110 ohms CHAPTER 1 Specifications General Specifications Compliance FCC Part 15 Class A Wallmount power supply UL CSA 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 50 to 120 F 10 to 49 C Storage Temperature 40 to 149 F 40 to 65 C Max Altitude Tolerance Operating 20 000 ft 6096 m Storage 40 000 ft 12 192 m Size 1 7 H x 7 W x 3 3 D 4 3 x 17 8 x 8 4 cm Weight 2 5 Ib 1 1 kg LMX SERIES ASYNCHRONOUS 16 PORT MULTIPLEXOR 2 Introduction 2 1 Overview This LMX Series Multiplexor is an efficient low cost bit interleaved sixteen port asynchronous Time Division Multiplexor TDM complete with an integral four wire limited distance line driver The LMX allows for interconnection of up to sixteen local clustered term
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