Allied Telesis CentreCOM AT-3004SL User Manual
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Allied Telesis CentreCOM AT-3004SL User Manual

Allied Telesis CentreCOM AT-3004SL User Manual

Multiport repeaters
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Allied
Telesyn
International
CentreCOM ™
AT-3004SL
AT-3008SL
Multiport
Repeaters
User Manual

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Summary of Contents for Allied Telesis CentreCOM AT-3004SL

  • Page 1 Allied Telesyn International CentreCOM ™ AT-3004SL AT-3008SL Multiport Repeaters User Manual...
  • Page 2 © Copyright 1994 Allied Telesyn International, Corp. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International, Corp. Allied Telesyn International, Corp. reserves the right to make changes in specifications and other information contained in this document without prior written notice.

  • Page 3: Table Of Contents

    Table of Contents Table of Contents ..........................iii Electrical Safety and Installation Requirements ............. v Chapter 1 Overview ..............................1 CentreCOM Multiport Repeaters ........................1 AT-3004SL 4 Port with One AUI AT-3008SL 8 Port with One AUI ........................1 Features ..............................2 Chapter 2 Installation ..............................3 Connections ...............................3...
  • Page 4 Table of Contents Appendix B Glossary ..............................17 Appendix C CentreCOM AT-3004SL/AT-3008SL Manual Feedback ..........25 Appendix D Technical Support Fax Order ..................... 27 Incident Summary ............................27...

  • Page 5: Electrical Safety And Installation Requirements

    Allied Telesis vertical mount chassis designed for this purpose. Air vents must not be blocked and must have free access to the room ambient air for cooling. DO NOT detach rubber feet from the product unless an Allied Telesis vertical mounting chassis is being used. OPERATING TEMPERATURE This product is designed for a maximum ambient temperature of 50 degrees Celsius.
  • Page 6 IKKE FORETAGES uden brug af et Allied Telesis vertikalt monteringsstel konstrueret til dette formål. ADVARSEL: Ventilationsåbninger må ikke blokeres og skal have fri adgang til den omgivende luft i rummet for afkøling. ADVARSEL: UNDLAD at fjerne gummisoklerne fra apparatet, med mindre der anvendes et Allied Telesis vertikalt monteringsstel. BETJENINGSTEMPERATUR Dette apparat er konstrueret til en omgivende temperatur på...
  • Page 7 ATTENTION: Ne pas bloquer les fentes d’aération, ce qui empêcherait l’air ambiant de circuler librement pour le refroidissement. ATTENTION: NE PAS ôter les pattes d’attache en caoutchouc du produit, à moins d’utiliser un châssis de montage vertical Allied Telesis. TEMPERATURE DE FONCTIONNEMENT Ce produit est capable de tolérer une température ambiante maximum de 50 degrés Celsius...
  • Page 8 ATTENZIONE: le prese d’aria non vanno ostruite e devono consentire il libero ricircolo dell’aria ambiente per il raffreddamento. ATTENZIONE: NON staccare il piedino in gomma dal prodotto tranne qualora si utilizzi il telaio Allied Telesis per il montaggio verticale. TEMPERATURA DI FUNZIONAMENTO Questo prodotto è...
  • Page 9 ATENCION: Las aberturas para ventilación no deberán bloquearse y deberán tener acceso libre al aire ambiental de la sala para su enfriamiento. ATENCION: NO separe las patas de goma del producto a menos que se esté usando un chasis de montaje vertical de Allied Telesis. TEMPERATURA REQUERIDA PARA LA OPERACIÓN Este producto está...
  • Page 10 VERTIKALMONTERING får EJ UTFÖRAS utan att ett Allied Telesis specialkonstruerat vertikalt monteringschassi används. VARNING: Luftventilerna får ej blockeras och måste ha fri tillgång till omgivande rumsluft för avsvalning. VARNING: Ta ej bort gummifötterna från produkten om inte ett Allied Telesis vertikalt monteringschassi används. DRIFTSTEMPERATUR Denna produkt är konstruerad för rumstemperatur ej överstigande 50 grader Celsius.

  • Page 11: Chapter 1 Overview

    Chapter 1 Overview CentreCOM Multiport Repeaters AT-3004SL 4 Port with The CentreCOM Multiport Repeaters are designed to connect up to 8 Ethernet/IEEE 802.3 thin (10BASE2) network segments. In addition to the One AUI thinnet interfaces, a single IEEE 802.3 Attachment Unit Interface (AUI) is AT-3008SL 8 Port with provided for attachment to external transceivers.

  • Page 12: Features

    Overview Features IEEE 802.3 compliant, Ethernet Version 1.0 and 2.0 compatible Connects up to 8 thin (10BASE2) coaxial network segments Automatic/manual partitioning of network segments Supports all Ethernet media including fiber optics via an AUI port Externally accessible terminator switch on BNC ports Packet regeneration/retiming and jabber lock-up protection Occupies just one slot in a 19 inch rack Receive, SQE/COL and On Line LEDs per port...

  • Page 13: Chapter 2 Installation

    Chapter 2 Installation Connections Attention Before installing AT-3004SL/AT-3008SL Multiport Repeaters, read the electrical safety and installation requirements starting on page i. Power Check your network cabling for proper configuration before installing the AT-3004SL and AT-3008SL repeaters. Power connections are made at the back panel.

  • Page 14: Bnc Ports

    Installation BNC Ports BNC Connections, 10BASE2. A thin Ethernet coaxial cable may be plugged directly into the BNC port located on the back panel. See Figure 4. Next to each of these ports is the 50 Ω termination switch. If the coax is plugged directly without a BNC-T or external terminator then the terminator switch for the respective port must be enabled by selecting the ON position.

  • Page 15: Chapter 3 Operation

    Chapter 3 Operation Status Indicators The CentreCOM Multiport Repeaters have 3 LED indicators for each port. These indicators, as shown in Figure 6, provide On Line, Activity and SQE/ COL information. 10 BASE2 PORTS PORT ON LINE ON LINE ON LINE ON LINE ON LINE RECEIVE...

  • Page 16: Segmentation (Partitioning)

    Operation Activity —This LED indicates that the repeater is functional and is transmitting packets to all ports. Power —The red LED indicator illuminates when power is applied. Segmentation During power-up, the CentreCOM Multiport Repeater will automatically enable the port provided the Auto/Manual switch is in the Auto position and (Partitioning) no problems are detected.

  • Page 17: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting If network traffic problems are suspected 1. If the power LED is not illuminated, check the power connections. 2. If the CentreCOM Multiport repeater is receiving power, check that terminations are correct on all BNC ports. 3. If any ports are disconnected verify that they are switched off line by ensuring that the Auto/Manual switch is in the Manual position.

  • Page 18: Chapter 5 Configuration

    Chapter 5 Configuration Figure 7 illustrates connections of the two CentreCOM Multiport Repeaters together using ATI fiber optic transceivers. ATI Fiber Optic Transceiver AT-120 AUI Cable (50 Meters Maximum) 1 KM Fiber Optic Cable Allied Telesyn 10 BASE2 PORTS PORT CentreCOM ON LINE ON LINE...
  • Page 19 Configuration 50 Ω 50 Ω ATI Transceiver AT-150 Terminator Terminator Allied Telesyn 10 BASE2 PORTS PORT CentreCOM ON LINE ON LINE ON LINE ON LINE ON LINE ON LINE ON LINE ON LINE ON LINE RECEIVE RECEIVE RECEIVE RECEIVE RECEIVE RECEIVE RECEIVE RECEIVE...

  • Page 20: Data Cabling Techniques

    Appendix A Data Cabling Techniques The following sections detail cabling techniques and port specifications for IEEE 802.3 media. For comprehensive treatment of these topics, refer to the original IEEE specification. 10BASE-T UTP links support transmissions up to 100 meters (328 ft.) at 10 Megabit data rates.

  • Page 21: Utp Hub-To-Mau Wiring

    Data Cabling Techniques Table 1 shows the five common modular cable specifications and their applicability to 10BASE-T network use. Table 1: Usable and Unusable Twisted Pair Cable Cable Twist/ 10BASE-T Cable Description Specification Level Character Foot Unshielded untwisted CCITT 100 Ω ± 30 Ω Individual UTP RS232 10BASE5...

  • Page 22: Utp Mau-To-Mau, Hub-To-Hub Wiring

    Pin 1 Figure 10: RJ45 Cable UTP MAU-to-MAU, 10BASE-T MAU-to-MAU or hub-to-hub wiring generally requires a crossover cable located somewhere along the UTP cable run. This may Hub-to-Hub Wiring commonly occur at the punch-down block or between the RJ45 wall receptacle and the workstation.
  • Page 23 Data Cabling Techniques Table 2 shows which position the straight-through/crossover selection switch needs to be for the device configuration shown. Table 2: MDI and MDI-X Switch Settings for Common Connection Model Connected to MDI-X AT-4016TR AT-4016TR RJ45 Transceiver AT-4016TR 1. This table assumes a straight-through cable is being used. The switch setting are the opposite of what is shown if a crossover cable is being used.
  • Page 24 If you pair pins incorrectly, for example as shown in Figure 12, Diagram B, your network may have a high data error rate. In a straight-through cable, the transmit pins, 1 and 2, are paired, as are the receive pins, 3 and 6. In a crossover cable (Figure 11), pins 1 and 2, TD+ and TD-, are paired, as are pins 3 and 6, RD+ and RD-.

  • Page 25: Appendix B Glossary

    Appendix B Glossary 10BASE2 —Also called thinnet or CheaperNet, 10BASE2 is a 10 MHz, baseband, 185 meters (606 ft.) maximum coaxial segment. Cable impedance is 50 Ω . 10BASE5 —Also called thick Ethernet, 10BASE5 is a 10 MHz, baseband, 500 meters (1639 ft.) maximum coaxial segment.
  • Page 26 Glossary BIT TIME —The duration of one bit symbol (1/BR). Ethernet specifies a bit time of 100 ns. COAX SEGMENT —A segment of Ethernet cable that contains MAU. CARRIER SENSE MULTIPLE ACCESS with COLLISION DETECT (CSMA/CD) —This is the access method employed by IEEE 802.3 LAN transceivers, by which multiple stations compete for use of the transmission medium (coax cable) for data packet transmission, and provides for a level of error detection should that transmission be corrupted or impeded by...
  • Page 27 DEPARTMENT CONCENTRATOR —Hub which provides a large number of workstation connections. In this manual the term department concentrator refers to multiple repeaters housed in an AT-36C8 chassis. See Hub/Repeater, Repeater. DIX CONNECTOR —See D-Sub Connector HARMONICA ADAPTER —This adapter provides a simple way to convert the 50-pin Telco connection to RJ45 connections.
  • Page 28 Glossary MANAGEMENT AGENT —Software that is used to view hub activity and set hub variables. MAU —See Medium Attachment Unit MAU to MAU, HUB to HUB WIRING —10BASE-T MAU to MAU or hub to hub wiring generally requires a cross-over cable located somewhere along the UTP cable run.
  • Page 29 PUNCH-DOWN BLOCK —The punch-down block is the wiring panel where the house wiring from the building’s offices terminates. This is where many 10BASE-T hubs would be located. Wiring installers use a special punch-down tool to insert the UTP wire for data and voice applications. REPEATER —A device used to extend the length, topology, or interconnectivity of the physical medium beyond that imposed by a single segment, up to the maximum allowable end-to-end trunk transmission line...

  • Page 30: Centrecom At-3004Sl/At-3008Sl Manual Feedback

    Appendix C CentreCOM AT-3004SL/AT-3008SL Manual Feedback Please tell us what additional information you would like to see discussed in the manual. If there are topics you would like information on that were not covered in the manual, please photocopy this page, answer the questions and fax or mail this form back to ATI.

  • Page 31: Technical Support Fax Order

    Appendix D Technical Support Fax Order Name _______________________________ _ ___________________________________ Company ____________________________ _ ___________________________________ Address _____________________________ _ ___________________________________ City ____________________State/Province____________ Zip/Postal Code __________ Country _________________ Phone __________________Fax ____________________ Incident Summary Model number of ATI product I am using ___ ___________________________________ Firmware release number of ATI product __ _ ___________________________________ Other network software products I am using (e.g., network managers) ____________________________________ _ ___________________________________...

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