MR840TF_Book Page i Tuesday, November 11, 1997 3:46 PM CentreCOM AT-MR840TF 8-Port Hub Installation Guide PN 613-10662-00 Rev.
MR840TF_Book Page ii Tuesday, November 11, 1997 3:46 PM Copyright 1997 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. The information provided herein is subject to change without notice.
MR840TF_Book Page iii Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements STANDARDS: This product meets the following standards. U.S. Federal Communications Commission RADIATED ENERGY Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
MR840TF_Book Page iv Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements SAFETY ELECTRICAL NOTICES WARNING: ELECTRIC SHOCK HAZARD To prevent ELECTRIC shock , do not remove cover. No user-serviceable parts inside. This unit contains HAZARDOUS VOLTAGES and should only be opened by a trained and qualified technician. To avoid the possibility of ELECTRIC SHOCK disconnect electric power to the product before connecting or disconnecting the LAN cables.
MR840TF_Book Page v Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide NORMEN: Dieses Produkt erfüllt die Anforderungen der nachfolgenden Normen. Hochfrequenzstörung EN55022 Klasse A WARNUNG: Bei Verwendung zu Hause kann dieses Produkt Funkstörungen hervorrufen. In diesem Fall müßte der Anwender angemessene Gegenmaßnahmen ergreifen. Störsicherheit EN50082-1 Elektrische Sicherheit EN60950, UL1950, CSA 950 Laser EN60825 SICHERHEIT ACHTUNG: GEFÄHRLICHE SPANNUNG Das Gehäuse nicht öffnen.
MR840TF_Book Page vi Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements VORSICHT Die Entlüftungsöffnungen dürfen nicht versperrt sein und müssen zum Kühlen freien Zugang zur Raumluft haben. BETRIEBSTEMPERATUR Dieses Produkt wurde für den Betrieb in einer Umgebungstemperatur von nicht mehr als 50° C entworfen. ALLE LÄNDER: Installation muß örtlichen und nationalen elektrischen Vorschriften entsprechen. STANDARDER: Dette produkt tilfredsstiller de følgende standarder.
MR840TF_Book Page vii Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide ELEKTRISK—KLASSE 1-UDSTYR DETTE UDSTYR KRÆVER JORDFORBINDELSE. Stikket skal være forbundet med en korrekt installeret jordforbunden stikkontakt. En ukorrekt installeret stikkontakt kan sætte livsfarlig spænding til tilgængelige metaldele. ELEKTRISK -- LEDNING Anvend ledning af maksimum 4,5 meters længde, med en kapacitet på minimum 6 amp.
MR840TF_Book Page viii Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements INSTALLATIE GEVAAR VOOR BLIKSEMINSLAG GEVAAR: NIET aan toestellen of KABELS WERKEN bij BLIKSEM. WAARSCHUWING: HET TOESTEL WORDT UITGESCHAKELD DOOR DE STROOMKABEL TE ONTKOPPELEN.OM HET TOESTEL STROOMLOOS TE MAKEN: de stroomkabel ontkoppelen. ELEKTRISCH: AUTOMATISCHE AANPASSING VAN DE SPANNING Dit toestel past zich automatisch aan elke spanning aan, tussen de op het label vermelde waarden.
MR840TF_Book Page ix Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide Sécurité électrique EN60950, UL1950, CSA 950 Laser EN60825 SÉCURITÉ INFORMATION SUR LES RISQUES ÉLECTRIQUES AVERTISSEMENT : DANGER D’ÉLECTROCUTION Pour éviter toute ÉLECTROCUTION, ne pas ôter le revêtement protecteur du matériel. Ce matériel ne contient aucun élément réparable par l’utilisateur. Il comprend des TENSIONS DANGEREUSES et ne doit être ouvert que par un technicien dûment qualifié.
MR840TF_Book Page x Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements STANDARDIT: Tämä tuote on seuraavien standardien mukainen. SÄTEILYENERGIA Tämä kaupallinen tuote on testattu ja noudattaa Yhdysvaltojen vaatimuksia luokan A laitteelle. Radioaaltojen häirintä EN55022 Luokka A VAROITUS: Kotiolosuhteissa tämä laite voi aiheuttaa radioaaltojen häiröitä, missä tapauksessa laitteen käyttäjän on mahdollisesti ryhdyttävä tarpeellisiin toimenpiteisiin.
MR840TF_Book Page xi Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide ASENNUSSOHJEET HUOMAUTUS: Nämä mallit on suunniteltu käytettäviksi VAAKA-asennossa. PYSTYASENNUSTA EI SAA TEHDÄ ilman Allied Telesyn -pystykiinnitysalustaa, joka on suunniteltu tähän tarkoitukseen. HUOMAUTUS: Ilmavaihtoreikiä ei pidä tukkia ja niillä täytyy olla vapaa yhteys ympäröivään huoneilmaan, jotta ilmanvaihto tapahtuisi. KÄYTTÖLÄMPÖTILA Tämä tuote on suunniteltu ympäröivän ilman maksimilämpötilalle 50°C.
MR840TF_Book Page xii Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements ELETTRICITÀ—REGOLAZIONE AUTOMATICA DELLA TENSIONE Questo prodotto regolerà automaticamente la tensione ad un valore compreso nella gamma indicata sull’etichetta. ELETTRICITÀ—DISPOSITIVI DI CLASSE 1 QUESTO DISPOSITIVO DEVE AVERE LA MESSA A TERRA. La spina deve essere inserita in una presa di corrente specificamente dotata di messa a terra.
MR840TF_Book Page xiii Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide brukeren kan reparere på innsiden. Denne enheten inneholder FARLIGE SPENNINGER, og må kun åpnes av en faglig kvalifisert tekniker. For å unngå ELEKTRISK SJOKK må den elektriske strømmen til produktet være avslått før LANkablene til- eller frakobles. Dette er et “KLASSE 1 LED PRODUKT” INSTALLASJON FARE FOR LYNNEDSLAG FARE: ARBEID IKKE på utstyr eller KABLER i TORDENVÆR.
MR840TF_Book Page xiv Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements PADRÕES: Este produto atende aos seguintes padrões. ENERGIA IRRADIADA Este produto foi testado e atende aos requisitos para dispositivos comerciais de Classe A dos E.U.A. Emissão de interferência de radiofrequência EN55022 Classe A AVISO: Num ambiente doméstico este produto pode causar interferência na radiorrecepção e, neste caso, pode ser necessário que o utente tome as medidas adequadas.
MR840TF_Book Page xv Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide INSTRUÇÕES DE INSTALAÇÃO CUIDADO: Estes modelos foram projetados para funcionar na posição HORIZONTAL. NÃO DEVE SER EFETUADA INSTALAÇÃO VERTICAL sem o uso de um chassis de montagem vertical Allied Telesyn projetado para este fim específico. CUIDADO: As aberturas de ventilação não devem ser bloqueadas e devem ter acesso livre ao ar ambiente para arrefecimento adequado do aparelho.
MR840TF_Book Page xvi Tuesday, November 11, 1997 3:46 PM Electrical Safety and Installation Requirements ELECTRICO—AUTO-AJUSTE DE TENSION Este producto se ajustará automáticamente a cualquier tensión entre los valores máximos y mínimos indicados en la etiqueta. ELECTRICO—EQUIPO DEL TIPO CLASE 1 ESTE EQUIPO TIENE QUE TENER CONEXION A TIERRA. El cable tiene que conectarse a un enchufe a tierra debidamente instalado.
MR840TF_Book Page xvii Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide Detta är en “KLASS 1 LYSDIODPRODUKT” INSTALLATION FARA FÖR BLIXTNEDSLAG FARA: ARBETA EJ på utrustningen eller kablarna vid ÅSKVÄDER. VARNING: NÄTKABELN ANVÄNDS SOM STRÖMBRYTARE FÖR ATT KOPPLA FRÅN STRÖMMEN, dra ur nätkabeln. ELEKTRISKT—AUTOMATISK SPÄNNINGSJUSTERING Denna produkt justeras automatiskt till alla spänningar inom omfånget som indikeras på produktens märkning.
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MR840TF_Book Page xix Tuesday, November 11, 1997 3:46 PM Table of Contents Electrical Safety and Installation Requirements .................................. iii Chapter 1 Product Description .......................................................................................1 Overview ..............................................................................................................1 Major Features .............................................................................................
MR840TF_Book Page xx Tuesday, November 11, 1997 3:46 PM Table of Contents Chapter 3 Configurations .............................................................................................. 15 Standalone Configuration ................................................................................ 15 Fiber Optic Backbone Network Configuration................................................ 16 Cascade Configuration .....................................................................................
MR840TF_Book Page 1 Tuesday, November 11, 1997 3:46 PM Chapter 1 Product Description Overview The AT-MR840TF is a 10Base-T /10Base-FL standalone, unmanaged hub that has eight UTP (RJ45) ports and one fiber optics port. There are two types of fiber optic ports that accommodate an uplink connection to the backbone. The ST version accommodates a fiber ST cable whereas the SC version accommodates an SC cable. The SC/ST uplink port provides a means for media conversion and increased distance.
MR840TF_Book Page 2 Tuesday, November 11, 1997 3:46 PM Product Description 10BASE-T NETWORK PORTS 8 MDI 10BASE-FL BACKBONE PORT 7 6 5 4 3 2 1 X X X X X X X MDI-X 1 2 3 6 1 2 3 6 1 2 3 6 RX 1 2 3 6 RX 10BASE-T NETWORK PORTS 8 MDI 1 2 3 6 1 2 3 6 POWER 6 5 4 3 2 1 X X X X X X X RX 1 2 3 6 LINK 10BASE-FL BACKBONE PORT 7 MDI-X 1 2 3 6 TX TX RX TX LINK TX POWER Figure 2: AT-MR840TF (ST/SC) Back Panels Major Features The major features of the AT-MR840TF inclu
MR840TF_Book Page 3 Tuesday, November 11, 1997 3:46 PM AT-MR820TR Hub Installation Guide Functional Description The AT-MR840TF hub incorporates the latest technologies, including a custom Application Specific Integrated Circuit (ASIC) and Surface Mount Technology (SMT).
MR840TF_Book Page 4 Tuesday, November 11, 1997 3:46 PM Product Description Jabber Lock-up Protection Jabber lock-up protects the hub from being overrun with excessively long data packets by isolating segments that contain these oversized packets (exceed maximum packet length). Therefore, jabber lock-up automatically prevents data which exceeds the allowed duration (usually 5 ms) from reaching the hub, or if the hub has been continuously transmitting for more than 65,536 bit times.
MR840TF_Book Page 5 Tuesday, November 11, 1997 3:46 PM AT-MR820TR Hub Installation Guide Table 1: AT-MR840TF Major Components Component # Component Name 1 Ethernet Controller 2 Transceiver/Phy Interface 3 Ethernet MAU 4 Fiber Optic Transceiver Physical Description The hub’s major components include the following: ❑ LEDs (port, hub, network) ❑ Eight Unshielded/Shielded Twisted Pair (UTP/STP) RJ45 ports ❑ One fiber uplink port (ST or SC) ❑ MDI/MDI-X switch ❑ AC power connector LEDs Ther
MR840TF_Book Page 6 Tuesday, November 11, 1997 3:46 PM Product Description Table 2 lists and defines the ports, hub, and network status LEDs. Table 2: Port and Hub Status LEDs LED Color Description LINK OK (port) green ON indicates that a valid link exists. No light indicates that the link is not OK. If the polarity is incorrect, the LINK OK light will be OFF until polarity is corrected by the multiport hub’s UTP port.
MR840TF_Book Page 7 Tuesday, November 11, 1997 3:46 PM AT-MR820TR Hub Installation Guide NETWORK LOAD 1 2 4 8 16 32 HUB STATUS 10BASE-T NETWORK PORTS 64 84+% LINK OK RECEIVE IEEE 802.
MR840TF_Book Page 8 Tuesday, November 11, 1997 3:46 PM Product Description UTP, Cascade, and Uplink Ports While the eight UTP ports can be used to directly connect to workstations in a standalone configuration, Port 8 is equipped with an MDI/MDI-X switch that conveniently provides the connection (cascade) to other hubs. In addition, the 10Base-FL(ST/SC) port provides the uplink connection to a fiber backbone network. See Figure 5.
MR840TF_Book Page 9 Tuesday, November 11, 1997 3:46 PM AT-MR820TR Hub Installation Guide MDI/MDI-X Switch The Media Dependent Interface/Media Dependent Interface Crossover (MDI/ MDI-X) switch is a slide switch that allows you to connect to either another hub or to a workstation by converting Port 8 to an uplinkable port; thereby allowing one hub to connect to another hub without requiring special crossover cables. Figure 6 illustrates this switch; Table 3 defines the switch’s function.
MR840TF_Book Page 10 Tuesday, November 11, 1997 3:46 PM Product Description Power Requirements for Model Types Table 4 lists the power requirements for the AT-MR840TF models. Table 4: Power Requirements for AT-MR840TF Models Part No.
MR840TF_Book Page 11 Tuesday, November 11, 1997 3:46 PM Chapter 2 Installation Before You Begin Before proceeding with the installation, please read “Electrical Safety and Installation Requirements” on page iii through xviii. Note Installation of this product should only be performed by TRAINED SERVICE PERSONNEL. Power Requirements Be sure that the voltage and frequency is either 100-120 or 200-240 VAC and 50 or 60 Hz.
MR840TF_Book Page 12 Tuesday, November 11, 1997 3:46 PM Installation Note If you are not using the UPLINK port (Port 8) for cascading to another hub, you may connect a standard 10Base-T cable to Port 8. Set the MDI/MDI-X switch to the MDI-X position. 6. Make sure that the LINK OK LEDs light green. If the LINK OK LEDs do not light, check that the adapter card on the opposite end of the UTP segment is operational.
MR840TF_Book Page 13 Tuesday, November 11, 1997 3:46 PM AT-MR840TF Hub Installation Guide Table 5 lists the MDI/MDI-X switch positions when using straight-through and crossover cable. Table 5: MDI/MDI-X Switch Position Rules Position Required Cable MDI to MDI-X straight through MDI-X to MDI straight through MDI to MDI crossover MDI-X to MDI-X crossover Verifying Installation 1. Make sure that the LINK OK LED of the first connected 10Base-T port is lit. A steady green LED indicates continuity. 2.
MR840TF_Book Page 14 Tuesday, November 11, 1997 3:46 PM Installation If the LINK OK LED does not light, there is no signal continuity. 1. Check that the attached Data Terminal Equipment (DTE) is ON. 2. Check that the Link signal has not been disabled at the other network device. If these checks do not identify the problem, it may indicate that the hub or device connected to the port is faulty. Verifying Collision LED The COLLISION LED will blink when an SQE or collision occurs.
MR840TF_Book Page 15 Tuesday, November 11, 1997 3:46 PM Chapter 3 Configurations This chapter presents and illustrates the different types of configurations supported by this hub. ❑ Standalone ❑ Fiber uplink to the backbone ❑ Cascade Standalone Configuration Figure 7 shows a standalone hub supporting eight workstations.
MR840TF_Book Page 16 Tuesday, November 11, 1997 3:46 PM Configurations Fiber Optic Backbone Network Configuration The most straightforward configuration is a hub attached to a fiber optic (10Base-FL) backbone network. Figure 8 shows a backbone network configuration using the fiber uplink connector attached to a coaxial Ethernet cable via a fiber optic transceiver.
MR840TF_Book Page 17 Tuesday, November 11, 1997 3:46 PM AT-MR840TF Installation Guide Cascade Configuration Port 8, used in conjunction with the MDI/MDI-X switch, is the specified port that allows you to connect one hub to another (cascade) or to connect to the backbone using the same medium type. To cascade hubs, you should connect Port 8 of the first hub to Ports 1-7 of the second hub and continue this scheme for any additional hubs.
MR840TF_Book Page 18 Tuesday, November 11, 1997 3:46 PM Configurations The Four-Repeater Rule The IEEE 802.3 standard provides general rules for 10Base-T cable length and network connections on single segments of cable or on point-to-point links with media attenuation and signal propagation delays. The basic rule is that, for any network, the maximum number of repeaters in the data path between any two nodes cannot exceed four.
MR840TF_Book Page 19 Tuesday, November 11, 1997 3:46 PM Appendix A Technical Specifications The AT-MR840TF Specifications Physical Height 37.6 mm (1.55 in.) Width 332 mm (13 in.) Depth 112 mm (4.4 in.) Installation options desk or wall mount Electrical Rating Input voltage 100-120 or 200-240 VAC Frequency 50 or 60 Hz Amperage 0.5/0.25 Amp Environmental Operating temperature 0˚ C to 50˚ C (32˚ to 94˚ F) Storage temperature -10˚ C to 70˚ C Operating altitude up to 10,000 ft.
MR840TF_Book Page 20 Tuesday, November 11, 1997 3:46 PM Technical Specifications Certification Safety CE Compliant UL 1950, CSA 22.2 No. 950, TUV EN60950, EN 60825 Emission EMI/RFI FCC Class A, EN55022 Class A, Immunity EN50082-1, IEC 801-2 1984 level 2 EFT/Burst Immunity IEC 801-41 1988 level 2 Connector Pinouts for UTP and Uplink Port Table 6 shows the pinouts for straight through cable when connecting a hub to a NIC.
MR840TF_Book Page 21 Tuesday, November 11, 1997 3:46 PM AT-MR820TF Hub Installation Guide Straight-through Cable Wiring If the twisted-pair link segment is to join two ports on a switch, and only one of the ports has an internal crossover, the two pairs of wires must be straight-through, as shown in Table 8.
MR840TF_Book Page 22 Tuesday, November 11, 1997 3:46 PM Technical Specifications 10Base-T/10Base-FL Network Specifications Table 10 provides an overview of the IEEE 802.3 specifications for 10Base-T/ 10Base-FL network configurations using twisted-pair wiring or fiber optics. Table 10: IEEE 802.
MR840TF_Book Page 23 Tuesday, November 11, 1997 3:46 PM Appendix B Technical Support Fax Order Name__________________________________________________________________ Company _______________________________________________________________ Address ________________________________________________________________ City ________________________ State/Province _______________________________ Zip/Postal Code ___________________ Country _______________________________ Phone _______________________________ Fax ___
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MR840TF_Book Page 25 Tuesday, November 11, 1997 3:46 PM Appendix C AT-MR840TF Installation Guide Feedback Please tell us what additional information you would like to see discussed in the guide. If there are topics you would like information on that were not covered in the guide, please photocopy this page, answer the questions and fax or mail this form back to Allied Telesyn International Corp. The mailing address and fax number are at the bottom of the page.
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MR840TF_Book Page 27 Tuesday, November 11, 1997 3:46 PM Appendix D Where To Find Us For Technical Support or Service Location Phone Fax Americas United States, Canada, Mexico, Central America, South America 1 (800) 428-4835 1 (206) 481-3790 Asia Singapore, Taiwan, Thailand, Malaysia, Indonesia, Korea, Philippines, China, India (+65) 3815-613 (+65) 3833-830 Australia Australia, New Zealand (612) 416-0619 (612) 416-9764 France France, Belgium, Luxembourg, The Netherlands, Middle East, Africa (+
MR840TF_Book Page 28 Tuesday, November 11, 1997 3:46 PM Where To Find Us For Sales Information Australia Lindfield, NSW Tel: (612) 416-0619, Fax: (612) 416-9764 Canada Rexdale, Ontario Tel: (416) 675-6738, Fax: (416) 675-0057 Richmond, British Columbia Tel: (604) 244-0678, Fax: (604) 270-3644 England Abingdon, Oxon Tel: (+44) 1235-442500, Fax: (+44) 1235-442590 France Les Ulis Tel: (+33) 1-60921525, Fax: (+33) 169-28-37-49 Germany Berlin Tel: (+49) 30-435-90-00, Fax: (+49) 30-435-706-50 Freising Tel: (+49
