AT-3012T User Manual
Contents
1. 14 Thick LOB ASE 5 dea 14 addita 14 F our Repeater 14 Appendix B LE e EE 15 Chapter 1 Overview CentreCOM Multiport Repeater 3012 10BASE T 12 Port Repeater The CentreCOM Multiport epeaters are designed to connect up to twelve IEEE 802 3 10BASE T network segments addition to the twisted pair interfaces a single E E E 802 3 Attachment U nit I nterface I is provided for attachment to other external transceivers this way the repeater allows for connection between the different media thick or thinnet coaxial fiber optic and twisted pair with the choice of the appropriate transceiver 3012 multiport repeaters utilize the latest technologies including a custom A pplication Specific ntegrated Circuit ASIC and Surface M ount Technology SMT which provide enhanced functionality increased reliability and improved price and performance CentreCOM Multiport R epeaters provide packet regeneration which results in a higher performance network Packet regeneration includes regenerating preamble retiming of the data packets and extending collision fragments to ensure collision enforcement by all nodes These repeaters support compliant features along with additional functions which further ensure fault protection and proper network operation Thel2. E C 320 entsprechenden nschluBverbindung an einem E nde und am anderen E nde mit einem im Land des E ndverbrauchers gepr ften Stecker ausgestattet sein MONTAGEANWEISUNGEN VORSICHT Diese Modelle sind f r Betrieb in horizontaler P osition entworfen worden Das Ger t darf NICHT OHNE Gebrauch eines daf r entworfenen A llied Telesyn Vertikalmontagegestells in VERTIKALER Position montiert werden VORSICHT DieE ntl ftungs ffnungen d rfen nicht versperrt sein und m ssen zum K hlen freien Zugang zur R aumluft haben VORSICHT Die Gummif amp e NICHT ENTFERNEN au er bei Gebrauch des Telesyn Vertikalmontagegestells BETRIEBSTEMPERATUR Dieses Produkt wurde f r den Betrieb in einer U mgebungstemperatur von nicht mehr als 50 C entworfen ALLE L NDER Installation mu rtlichen und nationalen elektrischen Vorschriften entsprechen STRALINGSENERGI Dette kommercielle produkt opfylder de krav der i USA stilles til udstyr af Klasse SIKKERHED ELEKTRISKE FORHOLDSREGLER ADVARSEL RISIKOFOR ELEKTRISK ST D For at forebygge ELEKTRISK st d undlad at bne apparatet Der er ingen indre dele der kan repareres af brugeren Denne enhed indeholder LIVSFARLIGE STROMSP ENDINGER og b r kun bnes af en uddannet og kvalificeret tekniker or at undg risiko for ELEKTRISK ST D afbrydes den elektriske str m til produktet for LAN kablerne monteres eller afmonteres FARE UNDER UVEJR FARE UNDLAD at arbejde p
3. 5 UTP cable to port 1 Check the respective ports segment partition switch located on the front panel The slide switch should be set to the LE FT Auto position Port 1 Link LED should illuminate provided the 10BASE transceiver on the opposite end of the UTP segment is operational f not ensure that the proper cable is being used or refer to the section on troubleshooting 2 Placethe AUI port and 10BASE T port 1 Auto Off L ine switch on the front panel into the Auto position and establish a connection to a host or device through the external transceiver 3 If external transceiver is to be used attach second 10BASE T UTP 45 connector to SE T port 2 Check the Segment partition switch for port 2 and ensure that is in the L E F T Auto position I f not place the port 2 slide switch to the LE FT position Port 2 Link LE D on the back panel should now illuminate provided the 10BA SE T device on the opposite end of the UTP cable is operational Chapter 3 Operations Indicators CentreCOM Multiport SE T Repeater has LE Ds for each port to easily provide status information as shown in F igure 4 Figure 4 AT 3012T Front Panel Indicator PORT OK SEGMENT PARTITIONING RECEIVE Front Panel Per Front Panel Central Port OK This LE D indicates that a valid link has been established and the port is not partitioned Segme
4. DOIT PAS tre utilis en MONTAGE VERTICAL sans employer un ch ssis de montage vertical Allied Telesyn concu cet effet ATTENTION Ne pas bloquer les fentes d a ration ce qui emp cherait l air ambiant de circuler librement pour le refroidissement ATTENTION Ne pas ter les pattes d attache en caoutchouc du produit moins d utiliser un ch ssis de montage vertical Allied Telesyn TEMPERATURE DE FONCTIONNEMENT Ce produit est capable de tol rer une temp rature ambiante maximum de 50 degr s Celsius POUR TOUS PAYS Installer le produit conform ment aux normes lectriques nationales et locales S TEILYENERGIA Tama kaupallinen tuote on testattu ja noudattaa Y hdysvaltojen vaatimuksia luokan A laitteelle TURVALLISUUS SAHKOON LIITTYVI HUOMAUTUKSIA VAROITUS SAHKOISKUVAARA staaksesi SAHK OISKUN l poista kantta Sis ll ei ole k ytt j n huollettavissa olevia osia T m laite sis lt VAARALLISIA J NNITTEIT ja sen voi avata vain koulutettu ja p tev teknikko V ltt ksesi S HK ISKUN mahdollisuuden katkaise s hk virta tuotteeseen ennen kuin liit t tai irrotat paikallisverkon LAN kaapelit SALAMANISKUVAARA _ HENGENVAARA L TY SKENTELE laitteiden tai KAAPELEIDEN KANSSA SALAMOINNIN AIKANA HUOMAUTUS VIRTAJOHTOA K YTET N VIRRANKATKAISULAITTEENA VIRTA KATKAISTAAN irrottamalla virtajohto Huomautus Attenzione Attenzione Pericolo AN AN Advarsel K ASENNUS
5. power at 50 60 Hz 3 Apply power tothe unit and check that the power LE D on the front panel is illuminated 4 ftheAT 3012T repeater is to be connected to an external transceiver attach an AUI cable tothe 15 pin connector on the back panel E nsure that the external transceiver has its Signal Quality Error SQE H eartbeat Installation Connections Note 0 DS Test function disabled When power is applied to the AT 3012T repeater the external transceiver should also have power 10 UTP cables be up to 100 meters 328 ft in length The cable should be 22to 26 AWG UTP wire with 100 O impedance The AT 3012T repeater uses RJ 45 modular connectors for it s LOBASE T connections 10BASE T RJ 45 wiring may have two connector pinouts The A T 3012T RJ 45 connector is wired as MDI X The 10BASE T UTP cable should be wired straight through pin 1to pin 1 etc if the device at the opposite end is an MDI interface Typically SE T transceivers Media Attachment U nit MAU or 10BA SE T host interface cards are wired as Media Dependent I nterface MDI interfaces 10B A SE T Hubs or repeaters are typically wired as MDI X interfaces f the A T 3012T repeater is to be cascaded to another 10BA SE T repeater a crossover cable may be required R efer to the Chapter 1 108 ASE T UTP Cabling of this manual for the correct wiring pinouts for Hub to Hub cables 1 Attach an RJ 45
6. Figure 3 UTP Hub RJ 45 Pin Diagram UTP MAU UTP MAU RU45 PIN RU45 PIN Tb 1 1 TD 2 3 Not 4 Not Used 5 RD 6 Not Used 7 Not 2 TD 3 4 Not 5 Not Used 6 RD 7 Not Used Not Used Overview Quick Installation Checklist Setup Testing If you are experienced with the AT 3012T multiport 10BA SE T repeater Hub use the following procedure I f you are not familiar with this repeater review this list and go on to the next chapter 1 Carefully unpack the 3012 R etain the packing materials until satisfactory installation has been achieved 2 Place the AT 3012T in a location with adequate ventilation and power receptacles Apply power to the repeater by attaching the power cable 4 If used attach the AUI cable for the external transceiver Attach a 10BASE T UTP cable with RJ 45 connectors attached to 10BASE T port 1 IftheAUl port is not used connect a second 10B ASE T cable to port 2 6 Select the segmentation switch to the left default position for the connected ports 1 Check the Link LED on the back panel for each 10BASE T port that is connected ON indicates a valid Link 2 Establish a network connection from the connected ports to a host or workstation on another port 3 After a successful connection disconnect the active 10 T connector and connect it to the next successive port until all
7. T 5 AUTOMAATTINEN JANNITTEENSAATO tuote s t automaattisesti mihin tahansa j annitteeseen ohjetarrassa annettujen arvojen v lill S HK TYYPPILUOKAN ILAITTEET TAMA LAITE TAYTYY MAADOITTAA Pistoke t ytyy liitt kunnollisesti maadoitettuun pistorasiaan Virheellisesti johdotettu pistorasia voi altistaa metalliosat vaarallisille j nnitteille S HK JOHTOON LIITTYV HUOMAUTUS yt seuraavanlaista virtajohtoa maksimipituus 4 5 metri minimiteho 6 ampeeria 250 V valmistettu johdostosta muovattu IE 320 liitin toisessa p ss ja k ytt maassa hyv ksytty pistoke toisessa p ss EET HUOMAUTUS N ama mallit on suunniteltu k ytett viksi VA A K A asennossa PY STYASENNUSTA El SAA TEHDA ilman Allied Telesyn pystykiinnitysalustaa joka on suunniteltu t h n tarkoitukseen HUOMAUTUS IImavaihtoreiki ei pid tukkia ja niill t ytyy olla vapaa yhteys ymp r iv n huoneilmaan jotta ilmanvaihto tapahtuisi HUOMAUTUS ALA irroita kumijalkoja tuotteesta ellei Allied Telesyn pystykiinnitysalusta ole k yt ss K YTT L MP TILA T m tuote on suunniteltu ymp r iv n ilman maksimil mp tilalle 50 KAIKKI senna tuote paikallisten ja kansallisten s hk turvallisuusm r ysten mukaisesti ENERGIA IRRADIATA Questo prodotto commerciale stato collaudato e risponde ai requisiti U S A per i dispositivi di dasse NORME DI SI
8. TYP KLASS 1UTRUSTNING DENNA UTRUSTNING M STE VARA ORDAD N tkabeln m ste vara ansluten till ett ordentligt jordat uttag E tt felaktigt uttag kan g ra att n rliggande metalldelar uts tts f r h gsp nning A pparaten skall anslutas till jordat uttag n r den ansluts till ett n tverk ELEKTRISKT ANMARKNING BETR FFANDE KABELN Anvand en kabel med maximum l ngd 4 5 meter och minimum 6 amp nominal 250V av HAR kabelfabrikat med ett specialutformat E C 320 kontaktdon i ena nden och i den andra en plugg som godk nts i landet d r produkten anv nds MONTERINGSINSTRUKTIONER VARN ING Dessa modeller konstruerade anv ndning i HORISONTALLAGE VERTIKALMONTERING f r EJ UTF RAS utan att ett Allied Telesyn specialkonstruerat vertikalt monteringschassi anv nds VARN ING Luftventilerna f r ej blockeras och m ste ha fri tillg ng till omgivande rumsluft f r avsvalning VARNING ej bort gummif tterna fr n produkten om inte ett Allied Telesyn vertikalt monteringschassi anv nds DRIFTSTEMPERATUR Denna produkt r konstruerad f r rumstemperatur ej verstigande 50 grader Celsius ALLA L NDER Installera produkten i enlighet med lokala och statliga best mmelser f r elektrisk utrustning Table of Contents Electrical Safety and Installation Requirements i Chapter 1 Overview 1 CentreCOM M ultiport R ae 1 AT 3012T
9. 2 thin Ethernet up to 30 AT 3012T Hubs may be connected in this way as shown in F igure 7 12 UTP Segments 12 UTP Segments 12 UTP Segments Appendix JEEE 802 3 Quick Primer AUT Drop Cables 10BASE T AUI or Drop cables can be no longer than 50 meters 164 ft each Attachments may be made only to the cable ends at the 15 pin D shell connector AUI Drop cables may have a maximum 257 ns propagation delay as used for computing the worst case propagation delay of a cable system AUI cable propagation delay is approximately 5 13 ns meter This cable internally consists of four shielded twisted pair wires with an overall shield and drain wire a 15 pin D shell male connector at one end and a 15 pin D shell female connector at the other end Cable impedance is nominally 78 TheAUI cable typically connects a transceiver attached to a coaxial segment toaDTE workstation 10BA SE T UTP media was implemented to reduce E thernet wiring costs UTP wiring is installed in most buildings for telephone systems Care must be taken to ensure the UTP wiring used for 10BA SE T is able to carry the high Ethernet data rates before 10BA SE T network solution is implemented U nlike coaxial E thernet SE 2 and 10BASE 5 10BASE T UTP is point to point wiring Typically one end is connected to an E thernet 10BA
10. C ALLE Installation af produktet skal ske i overensstemmelse med lokal og national lovgivning for elektriske installationer STRALINGSENERGIE Dit handelsprodukt werd getest en voldoet aan de Amerikaanse vereisten voor een klasse A toestel VEILIGHEID WAARSCHUWINGEN BETREKKINGTOT ELEKTRICITEIT WAARSCHUWING GEVAAR VOOR ELEKTRISCHE SCHOKKEN Gelieve het deksel niet te verwijderen teneinde ELEKTRISCHE schokken te voorkomen Binnenin bevinden zich geen onderdelen die door de gebruiker kunnen worden onderhouden Dit toestel staat onder GEVAARLIJKE SPANNING en mag alleen worden geopend door een daartoe opgeleide en bevoegde technicus Om het gevaar op ELEKTRISCHE SCHOKKEN te vermijden moet het toestel van de stroombron ontkoppelen alvorens de LAN kabels te koppelen of ontkoppelen 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 STROOMLOOSTE MAKEN stroomkabel ontkoppelen INSTALLATIE ELEKTRISCH AUTOMATISCHE AANPASSING VAN DE SPANNING Dit toestel past zich automatisch aan elke spanning aan tussen de waarden op het label vermeld Waarschuwingen Avertissement Attention AN Varoitus K Hengenvaara ELEKTRISCHE TOESTELLEN VAN KLASSE 1 DIT TOESTEL MOET GEAARD WORDEN Destekker moet aangesloten zijn op een juist geaarde contactdoos onjuist geaarde contactdoos k
11. SE T Network Interface Controller NIC or transceiver MAU and the other end is connected to a 10BA SE T hub repeater Straight through cabling pin out is used for hub to MAU connections ub to hub and MAU to MAU connections are allowed using a UTP cable with a cross over function crossing TD TD with RD and R D signals other attachments are allowed along the length of the UTP wire however wiring patch panels and punch down blocks are allowed for interconnecting segments The cable should be evel 100 impedance 22 to 26 AWG and should not exceed 100 meters 328 ft in length from one end to the other 13 802 3 Thin 10BASE2 Ethernet When configuring thin coax segments 802 3 specifications allow 30 fewer MAU attachments per cable segment spaced at no less than 0 5 meters 1 64 ft between each attachment The thin 10BA SE 2 cable length can not exceed 185 meters 606 ft per thin 10BA SE 2 cable segment The worst case propagation delay for a 185 meter 606 ft thin E thernet segment is 950 9 ns The propagation delay for thin 10BA SE 2 Ethernet cable is 5 14 ns meter B oth ends of the segment must be terminated with a 50 O termination with a power rating of 0 5 watts or greater The segment shield must be grounded only at one point on the cable Thick 10BASE5 Ethernet Propagation Four Repeater Rule 14 W hen configuring thick c
12. UTP Cable wired Pin to Pin 1OBASE T 10BASE T 1 toBAsE T 10BASE T 10BASE T 10 5 10BASE T Transceiver 10BASE T 10BASE T 10BASE T 10 5 Ge VS VE VLC VE Gel VE H H SEL BERN BER BEN A SEL Figure ER Hub Workstations DTEs Configuration Cascading of the AT 3012T multiport repeater 15 also possible following the IEEE 802 3 four repeater rule as shown in Figure 6 11 Configurations Figure 6 Cascading Hubs Figure 7 Hubs on a Backbone 12 Coaxial Ethernet Ethernet Cable Transceiver 11 UTP Segments 10 UTP Segments 11UTP Segments Bussing of the AT 3012T multiport repeater is another possibility Attaching Ethernet coaxial transceiver tothe AUI port of each AT 3012T repeater and then bussing the transceivers on a coaxial segment will allow more nodes N otice that the worst case node to node is through only two repeaters On 10BA SE
13. in its characteristic impedance COLLISION A n unwanted condition that results from concurrent transmissions on the physical medium COLLISION PRESENCE signal provided by the PLS tothe PMA sublayer within the physical layer to indicate that multiple stations are contending for access to the transmission medium COMPATIBILITY INTERFACE The coaxial cable interface and the AUI branch cable interface the two points at which hardware compatibility is defined to allow connection of independently designed and manufactured components to the baseband transmission system CROSS OVE R Wiring is used when connecting a 10BASE T MAU to another SE T MAU or a 10BASE T hub to another 10BA SE T hub or example one 10 T MAU would have the TD pair on the same pins as another 10BASE T MAU If pins were wired straight there would be two transmitters on one pair with no receiver T herefore the cross over cable crosses the TD pair with the RD pair of UTP cable connecting the TD pins on one end to the RD pins at the other end D SUB CONNECTOR The AUI cable uses 15 pin D sub connectors D refers to the shape of the connector shell Also called miniature D DB 15 or DIX connectors DATA COMMUNICATION EQUIPMENT DCE In RS232 specification a unit such as a modem for connecting a DTE to other equipment A repeater connected to a terminal or workstation for OME GA LOCAL management use is wired as aDCE DATA TER
14. se cabo de alimentac o com comprimento maximo de 4 5 metros com uma capacidade m nima de 6 amp 250 V fabricado de material para HAR com conector moldado E C 320 em uma extremidade e na outra extremidade um plugue aprovado para uso no pa s em quest o INSTRUC ES DE INSTALACAO CUIDADO E ste modelos foram projetados para funcionar na posic o HORIZONTAL DEVE SER EFETUADA INSTALACAO VERTICAL sem o uso de um chassis de montagem vertical A Telesyn projetado para este fim espec fico CUIDADO As entradas de ar devem ser bloqueadas devem ter acesso livre ao ar ambiente para arrefecimento adequado do aparelho CUIDADO NAO RETIRE oscalcos de borracha do produto a menos que esteja sendo usado um chassis de montagem vertical Allied Telesyn TEMPERATURA DE FUNCIONAMENTO E ste produto foi projetado para uma temperatura ambiente m xima de 50 graus cent grados TODOS OS PA SES Instale o produto de acordo com as normas federais locais para instala es el tricas ENERGIA RADIADA Este producto comercial ha sido probado y cumple con las normas requeridas los EE UU para un dispositivo de Clase SEGURIDAD AVISOS ELECTRICOS ADVERTENCIA PELIGRO DE ELECTROCHOQUE Para evitar un ELE CTROCHOQUE no quite la tapa N o hay ning n componente en el interior al cual puede prestar servicio el usuario E sta unidad contiene V OLTAJ E S PELIGR OSOS y s lo deber abrirla un t cnico entrenado y calific
15. se ha dise ado para este fin ATENCION Lasaberturas para ventilaci n no deber n bloquearse y deber n 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 est usando un chasis de montaje vertical de A llied Telesyn TEMPERATURA REQUERIDA PARA LA OPERACI N E ste producto est disefiado para una temperatura ambiental m xima de 50 grados C PARA TODOS LOS PA SES Monte el producto de acuerdo con los C digos E l ctricos locales y nacionales ENERGIUTSTR LNING Denna handelsprodukt har testats och befunnits vara enlighet med U S A s krav f r klass A utrustning S KERHET TILLK NNAGIVANDEN BETR FFANDE ELEKTRICITETSRISK RISK FOR ELEKTRISK STOT att undvika ELEKTRISK st t ta ej av locket Det finns inga delar som beh ver underh llas Denna apparat under GSP NNIN och f r endast ppnas av en utbildad kvalificerad tekniker att undvika E LEK TRISK STOT koppla ifr n produktens str manslutning innan LAN kablarna ansluts eller kopplas ur FARA FOR BLIXTNEDSLAG a FARA ARBETA utrustningen eller kablarna vid ASK VADER VARNING NATKABELN ANVANDS SOM STROMBRY TARE FOR ATT KOPPLA FRAN STROMMEN draur natkabeln INSTALLATION ELEKTRISKT AUTOMATISK SPANNINGSJUSTERING Denna produkt justeras automatiskt till alla sp nningar inom omf nget som indikeras produktens m rkning ELEKTRISKT
16. 10 SE T ports have been validated with good network connections 4 Install the remainder of the RJ 45 connectors to be used and test each respective 10BA SE T device Chapter 2 Installation Attention Ventilation Power Setup Note d Before installing 3012 repeaters read the electrical safety and installation requirements starting page i If the installer is experienced with the 3012 repeater and does not need detailed installation instructions refer to Chapter 1 Quick Installation of this manual The 3012 multiport 10BA SE T repeaters have holes on the sides for ventilation Do not restrict the flow of air through these openings Obstructing the passages may cause over heating and possible component damage Check your network cabling for proper configuration before installing the AT 3012T repeater Power connections are made at the back panel Make absolutely sure that the voltage and frequency applied are of the correct values for your 3012 There is no external power switch for the AT 3012T UTP Hub Power is applied as soon as the power cord 15 connected 1 Carefully remove the AT 3012T from its packaging materials etain the packing materials until satisfactory installation has been achieved 2 Placethe AT 3012T in its operating area The AT 3012T is equipped with an universal supply that will accept either 110 220
17. Allied CentreCOM 3012 M ulti port epeater User Manual Copyright 1994 A Telesyn I nternational 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 15 subject to change without notice no event shall A llied Telesyn nternational Corp be liable for any incidental special indirect or consequential damages whatsoever including but not limited to lost profits arising out of or related to this manual or the information contained herein even if Allied Telesyn International Corp has been advised of known or should have known the possibility of such damages Trademarks CentreCOM is registered trademark of Allied Telesyn nternational Corp Ethernet is a registered trademark of Xerox Corporation UNIX is a registered trademark of UNIX System L aboratories Novell and etWare are registered trademarks of ovell nc Microsoft and MS DOS are registered trademarks and LAN Manager and Windows for Workgroups are trademarks of Microsoft Corporation 3Com is a registered trademark of 3Com P C NF S is a trademark of Sun Microsystems nc PC TCP isaregistered trademark of F TP Software C
18. CUREZZA AVVERTENZE ELETTRICHE ATTENZIONE PERICOLO DI SCOSSE ELETTRICHE Per evitareSCOSSE ELETTRICHE non asportare il coperchio L e componenti interne non sonoriparabili dall utente Questa unit ha TENSIONI PERICOLOSE eva aperta solamente da un tecnico specializzato e qualificato Per evitare ogni possibilit di SCOSSE ELETTRICHE interrompere l alimentazione del dispositivo prima di collegare o staccare i cavi LAN PERICOLO DI FULMINI PERICOLO NON LAVORARE sul dispositivo o sui CAVI durante PRECIPITAZIONI TEMPORALESCHE ATTENZIONE IL CAVODI ALIMENTAZIONE USATO COME DISPOSITIVO DI DISATTIVAZIONE PER TOGLIERE LA CORRENTE AL DISPOSITIVO staccare il cavo di alimentazione INSTALLAZIONE ELETTRICITA REGOLAZIONE AUTOMATICA DELLA TENSIONE Questo prodotto regoler automaticamente la tensione ad un valore compreso nella gamma indicata sull etichetta ELETTRICITA 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 U presa non cablata in maniera corretta rischia di scaricare una tensione pericolosa su parti metalliche accessibili ELETTRICIT AVVERTENZA SUL CAVO sare un cavo della lunghezza massima di metri 4 5 con capacit minima di 6 250 V di filo HAR dotato di connettore stampato E C 320 ad un estremit e di spina approvata dal paese di destinazione all altra ISTRUZIONI PER IL MONTAGGIO ATTENZIONE
19. EEE 802 3 defined link integrity test function continually monitors the twisted pair cable to ensure link continuity of the receive pair between the user node and the repeater E ach segment is equipped with an auto partitioning capability in which each segment automatically partitions after repeated collisions are detected An external switch is also provided to manually partition each of the segments F inally the repeater supports jabber lock up protection which prevents attached transceivers from experiencing jabber lock up This function ensures isolation of faulty segments resulting from transmitted packets that exceed the maximum packet length Overview Figure 1 Front Panel AVE Allied Telesyn ga armo Sa IEEE 802 3 ETHERNET 10 BASE T 7 MULTIPORT REPEATER bs Features N etwork diagnostics are provided on the front as shown in F igure 1 and back of the AT 3012T repeaters to aid in troubleshooting and fault isolation On the front of the repeaters each network segment has two L EDs packet R eceive and Port as well as an Off L ine switch that provides manual partitioning capability addition there are three central LEDs indicating A ctivity Collision and Power for the repeater On the back panel the L ink Integrity Test LE D shows continuity of the media connection to the network node CentreCOM Multiport epeaters conform to the IE E E 802 3 specificatio
20. MINAL EQUIPMENT DTE nR S222 specification a unit typically at the end of a segment TheDTE could bean E thernet workstation repeater or bridge CentreCOM 3012 Multiport Repeater DEPARTMENT CONCENTRATOR Hub which provides a large number of workstation connections Tthe term department concentrator refers to multiple repeaters housed an 36 8 chassis See Hub R epeater R epeater DIX CONNECTOR See D Sub Connector HARMONICA ADAPTER This adapter provides a simple way to convert the 50 pin Telco connection to RJ 45 connections HEARTBEAT See SQE HUB to HUB WIRING See Hub to MAU Wiring HUB to MAU WIRING UTP cables for 10BASE T hub to MAU or Network I nterface Controller cards are wired straight through An RJ 45 receptacle at the hub would wire pin to pin to the RJ 45 receptacle at the MAU HUB REPEATER hub is a central signal distributor It is used in a wiring topology consisting of several point to point segments originating from a central point The term hub is often used interchangeably with the term repeater Multiport 10 SE 10BASE 2 and fiber optic LOBASE F L F OIRL repeaters are considered hubs See epeater HOUSE WIRING H ouse wiring is the existing wiring inside a building This wiring generally originates from one or more wiring closets such as a telephone room Some older buildings may have wiring unsuitable for 10 M egabit data rates these circumstan
21. TOBASE T 12 Port Repeater cinc id ic 1 PUT 8S IA 2 TOBASE T UT P Cablitio 3 Hub to MAU S O merce 3 Eb to ED LIU 3 Quick Installation CA eo ic 4 4 RE lat 4 Chapter 2 Installation pote eei e 5 5 OV EM 5 S EDU oos a 5 5 6 Chapter 3 f as e 7 AU Tm 7 Front Panel ODE Sues edet ope bep 7 MA m c O 7 EP anl E 8 Ke Luet en 8 SY SEEN pe Eeer 8 Chapter 4 Troubleshooting siii dere 9 an HOCH 9 Chapter 5 e ste De E 11 Appendix IEEE 802 3 Quick Primer a en 13 A E 13 VOB AVS ees 13 CUBA SE 2 EEDOETIQE
22. ado Para evitar la posibilidad de ELECTROCHOQUE desconecte la corriente el ctrica que llega al producto antes de conectar o desconectar los cables LAN PELIGRO DE RAY OS PELIGRO NOREALICE NINGUN TIPODE TRABAJOO CONEXION los equipos oen 05 CABLES durante TORMENTAS DE RAYOS V Varning K Varning AN ATENCION EL CABLE DE ALIMENTACION SE USA COMO UN DISPOSITIVODE DESCONE XION PARA DESACTIVAR EL QUIPO desconecte el cable de alimentacidn INSTALACION ELECTRICO AUTO AJUSTE DE TENSION E ste producto se ajustar autom ticamente a cualquier tensi n entre los valores m ximos y m nimos indicados en la etiqueta ELECTRICO EQUIPODEL TIPOCLASE 1 ESTE EQUIPOTIENE QUE TENER CONEXION A TIERRA cable tiene que conectarse a un enchufe con tierra debidamente instalado U n enchufe que no est correctamente instalado podr a ocasionar tensiones peligrosas en las partes met licas est n expuestas ELECTRICO ADVERTENCIA SOBRE EL CABLE U seun cable el ctrico con un m ximo de 4 5 metros de largo con una capacidad m nima de 6 amperios 250 V hecho de cable con el conector moldeado E C 320 en un extremo y con un enchufe que est aprobado por el pa s de uso final en el otro INSTRUCCIONES DE MONTAJ E ATENCION Estos modelos est n dise ados para operar en posici n HORIZONTAL NOSE DEBEN MONTAR VERTICALMENTE sin el uso de un chasis de montaje vertical de Allied Telesyn que
23. an de metalen onderdelen waarmee de gebruiker eventueel in aanraking komt onder gevaarlijke spanning stellen ELEKTRISCHE SNOEREN Gebruik een elektrisch snoer maximum 4 5 meter lang berekend voor ten minste 6 amp re 250 V uit HAR vervaardigd met aan het ene uiteinde een gevormde C 320 stekker en aan het andere uiteinde een stekker die goedgekeurd is door het land waar het toestel worden gebruikt MONTAGE INSTRUCTIES WAARSCHUWING Deze modellen zijn ontworpen om te werken HORIZONTALE stand VERTICALE MONTAGE mag NIET UITGEVOERD WORDEN tenzij een daartoe speciaal ontworpen A llied Telesyn chassis voor verticale montage wordt gebruikt WAARSCHUWING De ventilatiegaten mogen niet worden gesperd en moeten de omgevingslucht ongehinderd toelaten voor afkoeling WAARSCHUWING De rubberen voetjes NIET van het produkt 1 5 behalve wanneer een chassis voor vertikale montage van Allied Telesyn wordt gebruikt BEDRIJ FSTEMPERATUUR De omgevingstemperatuur voor dit produkt mag niet meer bedragen dan 50 graden Celsius ALLE LANDEN het toestel installeren overeenkomstig de lokale en nationale elektrische voorschriften ENERGIE RAYONNEE Ce mat riel a t test et est certifi conforme par r glementation am ricaine aux normes d finies pour les appareils de classe SECURITE INFORMATION SUR L ELECTRICITE AVERTISSEMENT DANGER D ELECTROCUTION Pour emp cher les dangers d E LE CTROCUTION ne pas enlever l
24. aution AN Caution RADIATED ENERGY US Federal Communications N ote This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment T his equipment generates uses and can radiate radio frequency and if not installed and used in accordance with this instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference which case the user will be required to correct the interference at his own expense N ote Modifications or changes not expressly approved by the manufacturer or the FCC can void your right to operate this equipment Canadian Department of Communications This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications Le pr sent appariel num rique n met pas de bruits radio lectriques d passant les limites appicables aux appariels num riques de Classe Prescrites dans le r glement sur le brouillage radio lectrique dict par le minest re des Communications Du Canada SAFETY ELECTRICAL NOTICES WARNING ELECTRIC SHOCK HAZARD To prevent ELECTRIC shock do not remov
25. ces it is recommended that the wiring is tested with 10 5 signal wire tester IMPEDANCE An electrical characteristic of a circuit dealing with the combination of the A C and DC resistance and the appearance of that resistance to attached circuits JABBER LOCK UP The MAU 5 ability to automatically inhibit the transmit data from reaching the medium if the transmit data time length exceeds 150 ms duration This protects the medium from being overrun with data packets from a possibly defective device IAM This is a term used to describe the collision reinforcement signal output by the MAU onto the transmission medium if the transmit data time length exceeds 150 us duration This protects the medium from being with data packets from a possibly defective device JITTER The fluctuation of the data packet in respect to a standard clock cycle itter is undesirable and must be minimized LINK SEGMENT The link segment of coaxial cable is a segment which has no MAU devices but links two LAN devices together such as repeaters LINK n 10BASE T Ethernet there is a link test function that validates the U TP link This consists of a pulse transmitted from point A on one pair and validated at point Point B also transmits a pulse on the second pair to be validated by point A These pulses occur during media idle states in between packets 17 Glossary 18 MANAGEMENT Software that is use
26. d 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 length R epeaters perform the basic actions of restoring signal amplitude waveform and timing applied to normal data and collision signals RJ 45 This connector is a 10BA SE T standard for connecting UTP cabling They are inexpensive and easy to install onto U TP cable SIGNAL QUALITY ERROR SQE Also referred to as Collision or Collision Presence This occurs when two devices attempt to transmit at the same time which is an illegal condition SQE TEST Commonly referred to as eartbeat is a special 802 3 signal sent by theMAU tothe DTE totest the collision detection function Some DTE want SQE and others do not R epeaters do not want SQE Test THICK ETHERNET See 10BASE 5 THIN ETHERNET See 10BASE2 TRUNK The trunk coaxial cable system UNSHIELDED TWISTED PAIR UTP A cable used in 10BA SE T wiring that consists of at least two twisted pairs of 22 to 26 AWG wire The pairs should have at least 3 twists per foot and have an impedance of 100 L evel 3 and Level 4U TP cable generally fits these criteria 19
27. d to view hub activity and set hub variables See Medium Attachment U nit 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 This may commonly occur at the punch down block or between the RJ 45 wall receptacle and the workstation MAU TRANSCEIVER AnE thernet transceiver isa MAU A 10BASE T MAU interfaces the UTP media to an AUI port on a workstation repeater bridge or other Ethernet devices See Medium Dependent I nterface MEDIUM ATTACHMENT UNIT MAU InaLAN a device used in a data station to couplethe DTE tothe transmission medium MEDIUM DEPENDENT INTERFACE MDI T he mechanical and electrical interface between the trunk cable medium and the MAU N SERIES barrel shaped threaded connector used on 10BASE 5 thick Ethernet coaxial cable PATCH PANEL A 10BASE T patch panel may be between a punch down block and UTP workstation The patch panel generally has a female RJ 45 connector on the front for each workstation and a Telco RJ 21 connector on the back which are wired to a punch down block This provides a convenient way for the installer or network manager to connect the hub SE T ports into the desired building locations PHYSICAL MEDIUM ATTACHMENT PMA T he portion of the MAU that contains the functional circuitry PHYSICAL SIGNALING PLS T hat portion of the physical layer c
28. e couvercle L quipement ne contient aucun l ment r parable par l utilisateur Cet appareil comprend des TENSIONS DANGEREUSES ne doit tre ouvert que par un technicien d ment qualifi P our viter tout risque d E LE CTROCUTION d brancher l appareil dela prise de courant avant de connecter ou de d connecter les c bles LAN DANGER DE FOUDRE DANGER NE PAS MANIER l quipement ou les CABLE S pendant les p riodes d activit orageuse ATTENTION LE CORDON D ALIMENTATION SERT DE MISE HORS CIRCUIT POUR COUPER L ALIMENTATION DE L APPAREIL d branchez le cordon INSTALLATION ELECTRICITE REGLAGE DE TENSION AUTOMATIQUE Ce produit peut s ajuster automatiquement sur n importe quelle tension comprise dans la plage indiqu e sur le label ELECTRICITE EQUIPEMENT DE CLASSE 1 CET APPAREIL DOUT ETRE MISA LA TERRE La prise de courant doit tre branch e dans une prise femelle correctement mise la terre Sinon des tensions dangereuses risqueraient d atteindre les pi ces m talliques accessibles l utilisateur ELECTRICITE INFORMATION SUR LE CORDON Utiliser un cordon secteur de 4 5 m tres de long maximum calibr 6 amp res minimum 250V et fabriqu c blage HAR avec connecteur 1E C 32C moul une extr mit et l autre extr mit une prise de courant m le r pondant aux normes du pays d utilisation INSTRUCTIONS DE MONTAGE ATTENTION Ces mod les sont destin fonctionner en position horizontale L appareil
29. e cover user serviceable parts inside This unit contains HA ZA R DOU S VOLTAGE S 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 LIGHTNINGDANGER DANGER DONOT WORK on equipment or CABLE S during periods of LIGHTNING ACTIVITY CAUTION POWER CORD ISUSED AS A DISCONNECTION DEVICE TODE ENERGISE EQUIPMENT disconnect the power cord INSTALLATION ELECTRICAL AUTO VOLTAGE ADJUSTMENT This product will automatically adjust to any voltage between the ranges shown on the label ELECTRICAL TYPE CLASS 1EQUIPMENT THIS EQUIPMENT MUST BE EARTHE D Power plug must be connected to a properly wired earth ground socket outlet A n improperly wired socket outlet could place hazardous voltages on accessible metal parts ELECTRICAL CORD NOTICE U se power cord maximum 4 5 meters long rated 6 amp minimum 250V made of HAR cordage molded E C 320 connector on one end and on the other end a plug approved by the country of end use MOUNTING INSTRUCTIONS CAUTION These models are designed for operation inthe HORIZON TAL position VERTICAL MOUNTING must not be done without the use of an Allied Telesyn vertical mount chassis designed for this purpose CAUTION Air vents must not be blocked and must have free access to the room ambient air for cooling CAUTION DO NOT detach rubber feet from the product unl
30. e segments are allowed Appendix Glossary 10BASE 2 Also called thinnet or CheaperN et 10BASE 2 10 MHz baseband 185 meters 606 ft maximum coaxial segment Cable impedance 5 500 10 5 Also called thick Ethernet 10BASE 5 is a 10 MHz baseband 500 meters 1639 ft maximum coaxial segment The cable is commonly referred toas yellow cable Cable impedance is 50 2 Thick Ethernet cable is typically used as a trunk or backbone path of the network LOBASE T IEEE 802 3 UTP Ethernet sing low cost L evel or better UTP wiring 100 meters 328 ft of point to point link segments are possible U ses RJ 45 connectors and sometimes 50 pin AMP connectors to a patch panel 50 PIN TELCO RJ 21 T his connector is very common in 10BASE T wiring As opposed to the RJ 45 connector the 50 pin Telco connector concentrates up to 12 UTP connections onto one connection This concentration of UTP ports is later broken out for connection to a punch down block inside a building s wiring closet 50 pin Telco connections provide a very clean uncluttered interface to the building s wiring ATTACHMENT UNIT INTERFACE AUI T his is the cable connection from a MAU transceiver toa DTE typically a workstation consisting of a 15 conductor twisted pair cable of 50 meters 164 ft maximum length BASEBAND COAXIAL SYSTEM A system whereby information is directly encoded and impressed on the coaxial transmission medium A
31. ess an Allied Telesyn vertical mounting chassis is being used OPERATING TEMPERATURE This product is designed for a maximum ambient temperature of 509 C ALL COUNTRIES Install product in accordance with local N ational E lectrical Codes SICHERHEIT ACHTUNG GEF HRLICHE SPANNUNG Das Geh use nicht ffnen Das Ger t enth lt keine vom Benutzer wartbaren Teile Das Ger t steht unter ochspannung und darf nur von qualifiziertem technischem Personal ge ffnet werden Vor Anschlu der LAN K abel Ger t vom Netz trennen GEFAHR DURCH BLITZSCHLAG GE FAHR K eine Arbeiten am oder an den Kabeln w hrend eines Gewitters ausf hren VORSICHT DAS NETZKABEL DIENT ZUM TRENNEN DER STROMVERSORGUNG ZUR TRENNUNGVOM NETZ KABEL AUSDER VORSICHT STECKDOSE ZIEHEN INSTALLATION AUTOMATISCHE SPANNUNGSEINSTELLUNG Dieses Ger t stellt sich automatisch auf die auf dem E tikett aufgef hrten Spannungswerte ein KLASSE 1GER TE DIESE GERATE MUSSEN GEERDET SEIN Der Netzstecker darf nur mit einer vorschriftsm fig geerdeten Steckdose verbunden werden E in unvorschriftsm fiiger A nschlu amp kann das etallgeh use Teile unter gef hrliche elektrische Spannungen setzen Vorsicht Advarsel Advarsel AN Advarsel AN Waarschuwingen K Waarschuwingen NETZKABEL Das N etzkabel sollte eine maximale ange von 4 5 Metern einen N ennwert von mindestens 6 und 250 V haben aus M aterial hergestellt und mit einer
32. itch Moving the slide switch to the L eft position selects the port active F actory Default Moving the slide switch to the right segments the port from the others the Right position the segmentation switch for the AUI port will disconnect the AT 3012T Hub from the attached transceiver 1 Establish a connection from the device connected to port 1 to the device connected to port 2 2 connection between devices attached to SE T ports 1 and 2 has been successfully established remove the R J 45 connector from port 2 and connect it to each of the subsequent AT 3012T 10BASE T ports 3 through 12 to verify their functions 3 If all ports test successfully install the rest of the 10BASE T RJ 45 connections and ensure that the Link L E D for each port is illuminated Remember the SE T device on the opposite end of the UTP cable must be operational The ink LED validates the receive pair only The opposite end of the UTP segment is responsible for validating the transmit pair X T he X below each of the 10BASE T RJ 45 connectors on the back panel indicates that the AT 3012T UTP port is wired as an MDI X Hub as per the IEEE 802 3 10BASE T specification Chapter 4 Troubleshooting gt If no Power indicator is illuminated 1 Check your power connections gt If the Link indicator not on Note i Collision 1 Check that the opposite end of the UTP link is
33. ns This permits a maximum of four repeaters to be cascaded allowing over a thousand individual segments to be configured into a single network Q IEEE 802 3compliant 10BASE T repeater E thernet V ersion 1 0and 2 0 compatible Supports all standard E thernet media including fiber optic via AUI port One AUI 12 RJ 45 ports Standalone or department concentrator applications A utomatic manual partitioning of network segments Packet regeneration and retiming and jabber lock up protection L ink integrity test Receive and Port OK LEDs per port Standalone or rack mountable Status and diagnostic LE Ds One year warranty CentreCOMM AT 3012T Multiport Repeater 10BASE T UTP Cabling Hub to MAU Wiring The most typical U nshielded Twisted Pair UTP cable for the AT 3012T will be repeated UTP Hub to UTP transceiver Data Terminal E quipment end The cable pinout for this configuration is illustrated in F igure 2 below UTP MAU UTP HUB RJ45 PIN RJ45 PIN TD O 1 mwm RD Figure 2 UTP MAU RJ 45 Pin Not Used 4 Not 5 RD 4 Not Used 6 Not Used Not Used 7 Not Used 6 RD Not Used Not Used Diagram Hub to Hub UTP Hubs may be cascaded or linked together using UTP wiring If cascading of AT 3012T UTP Hubs is desired use the UTP cable pin out as illustrated in F igure 3
34. nstalleres i samsvar med de lokale og nasjonale elektriske koder ENERGIA IRRADIADA Este produto foi testado atende aos requisitos para dispositivos comerciais de ClasseA nos E U A SEGURANCA i AVISOS SOBRE CARACTERISTICAS 5 DE CHOQUE ELETRICO Para evitar CHOQUE EL TRICO n o retire a tampa N cont m pecas que possam ser consertadas pelo usuario E ste aparelho cont m VOLTAGENS PERIGOSAS 50 deve ser aberto por um t cnico qualificado etreinado Para evitar a possibilidade de CHOQUE ELETRICO desconecte o aparelho da fonte de energia el trica antes de conectar e desconectar os cabos da DE CHOQUE CAUSADO POR RAIO PERIGO NAOTRABALHE equipamento ou nos CABOS durante per odos suscet veis de QUEDAS DE RAIO CUIDADO UTILIZADO COMO UM DISPOSITIVO DE DESCONE XAO PARA DESELETRIFICAR OEQUIPAMENTO desconecte o cabo de alimentac o INSTALACAO ELETRICO AJUSTE DE VOLTAGEM ste produto ajustar se automaticamente a qualquer voltagem que esteja dentro dos limites indicados no r tulo EL TRICO E QUIPAMENTOS DOTIPOCLASSE 1 DEVE SER FEITA LIGACAODE FIOTERRA PARA ESTE EQUIPAMENTO O plugue deve ser conectado a uma tomada com liga o de fio terra Tomadas sem ligac o de fio terra podem transmitir voltagens perigosas a pecas met licas expostas ELETRICO AVISO SOBRE OCABO DE ALIMENTACAO
35. ntation Switch A manual partitioning switch This switch enables you to manually partition a port F or normal operation this switch needs to be in the A uto position Receive This LED flashes when incoming packets are present on the respective segment Activity This LE D indicates that the repeater is functional and is transmitting packets to all ports Operations Back Panel Segmentation Switches System Check Note Collision T his indicator represents SQE collision flickering will indicate SQE or collisions Occasional collisions are normal in Ethernet networks E xcessive collisions is an indication of possible segment problems A constantly illuminated Collision may indicate that there is a port cabling or excessive traffic problem Power This LED illuminates when power is applied Link Integrity Test the left of the RJ 45 connectors 12 Link LEDs These LE Ds will illuminate if their respective port has a valid link connection with the 10BA SE T device at the opposite end of the UTP cable This provides a convenient indication to the network installer that a particular port or ports are connected properly and active The only switches on this repeater are recessed on the front panel and provide the A utomatic M anual segmentation function for each port L ocated to the L eft of the R eceive LE Ds for each port is that port s segmenting or partitioning sw
36. oax segments E E 802 3 specifications allow 100 MAU attachments or less spaced at multiples of 2 5 meters 8 2 ft measured accurately from the cable end 50 Q terminator included The thick cable segment cannot exceed 500 meters 1640 ft in length Worst case end to end propagation delay of a thick coax segment is 2165 ns Propagation delay of thick E thernet coax is calculated at 4 33 ns meter Both ends of the segment must be terminated with a 50 O termination with a power rating of 0 5 watts or greater E arth grounding of the segment shield must take place only at one point on the cable Propagation delay is the time it takes a signal to travel from the input of a system component to the output Propagation delay is usually measured in nanoseconds E E E 802 3 has specific propagation delay maximums for the Ethernet components Cable length plays a major role in propagation delay i e a 50 meters 164 ft AUI cable has a maximum propagation delay of 257 ns The propagation delay of cable is dependent on length and velocity factor of the cable type Round trip propagation delay through out the entire cable system from farthest ends may not exceed 51 7 us 4 us U p to four repeater units may be connected for a total of five segments provided that two of the segments are link segments L ink segments have no MAU attachments If all segments are coax segments having MAU attachments then a maximum of two repeater units and thre
37. ontained within the DTE that provides the logical and functional coupling between MAU and data link layers POLARITY CORRECTION Many 10BASE T UTP ports havea Polarity Correction function the UTP wiring has R D and inadvertently crossed the polarity correction function will sample the signal and electrically swap the wires the TD and TD wires are crossed the correction would occur at the MAU on the other end of the UTP link This occurs within a single pair and should not be confused with the cross over cable PROPAGATION DELAY T he time it takes a signal to travel from the input of a system component to the output U sually measured in nanoseconds IEEE 802 3 has specific propagation delay maximums for computing propagation budgets when designing aLAN Cable length plays a major role in propagation delay i e 50 meters 164 ft AUI cable has a maximum allowable propagation delay of 257 ns The propagation delay of cable is dependent on length and velocity factor of the cable type There are also propagation delays associated with electronics attached to the system CentreCOMM AT 3012T Multiport Repeater 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 10BA SE T hubs would be located Wiring installers use a special punch down tool to insert the UTP wire for data and voice applications A device used to exten
38. powered on 2 Check that the proper cable pinout is used f another manufacturer s 10 SE T device is used on the opposite end of the UTP link check that it is true IOBASE T If only one segment is non functional then try another port to determine if the port or cable segment is at fault UTP cable wiring is the most common cause of non functional segments at installation time Use only UTP cable evel 3 or above designed for use in 10BA SE T applications 10 SE T wiring lengths should not exceed 100 meters 328 ft The wiring should be routed away from devices known to emit electromagnetic interference such as fluorescent lights power transformers and relay equipment If the Collision LE D is flashing excessively make certain that the SQE H eartbeat Test function is disabled on the transceiver attached to the AUI port R epeaters do not want SQE H eartbeat Test E xcessive flickering of the Collision L E D may indicate too many frame collisions on the segment This may be caused by an overloaded segment or faulty cable or connection If no ports are functional and the Power LED is illuminated try a known good repeater to test and validate the segment Chapter 5 Configurations F igure 5 illustrates connecting a CentreC OM Multiport 10BASE T R epeater to a thick thernet backbone supporting 12 10BASE T Ethernet segments Coaxial Ethernet AUI Cable 100 Meters
39. questi modelli sono concepiti per il funzionamento posizione ORIZZON TALE NON E POSSIBILE EFFETTUARE IL MONTAGGIO VERTICALE senza utilizzare l apposito telaio il montaggio verticale A llied Telesyn ATTENZIONE le prese d aria non vanno ostruite e devono consentireil libero ricircolo dell aria ambiente per il raffreddamento ATTENZIONE NON staccare il piedino in gomma dal prodotto tranne qualora si utilizzi il telaio Allied Telesyn per il montaggio verticale TEMPERATURA DI FUNZIONAMENTO Questo prodotto concepito per una temperatura ambientale massima di 50 gradi centigradi TUTTI I PAESI installare il prodotto in conformit alle vigenti normative elettriche nazionali UTSTR LT ENERGI Dette kommersielle produktet har blitt testet og er i samsvar med amerikanske krav for et A Klasse apparat SIKKERHET ELEKTRISKE MEDDELELSE ADVARSEL FARE FOR ELEKTRISK SJOKK For unng ELEKTRISK sjokk m dekslet ikke tas av Det finnes ingen deler som du kan bruke p innsiden Denne enheten inneholder FARLIGE SPENNING og kun pnes av en opplaert kvalifisert tekniker muligheten av ELEKTRISK 5 m den elektriske str mmen til produktet v re av du sl r L AN ledninger av og FARE FOR LYNANTENNELSE FARE IKKE BRUKES utstyr eller ledninger mens LY N AKTIVITET er i gang FORSIKTIG STROMLEDNINGEN BRUKES TIL SL APPARATET AV HVIS DU VIL DEAKTIVISERE UTSTYRET m du fjerne st
40. r mledningen Forsiktig Atenc o gt Perigo Cuidado AN Advertencia K Peligro AN 5 1 5 ON ELEKTRISK AUTOSPENNINGSTILPASSING Dette produktet vil automatisk bli tilpasset hvilken som helst straminnstilling i de omr dene som vises p etiketten ELEKTRISKE TYPE 1 KLASSE UTSTYR DETTE UTSTYRET JORDES Strgmkontakten m v re tilkoplet en korrekt jordet grunnstgpselkontakt E n stepselkontakt som ikke er jordet p rett mate kan tilf re farlig spenning til lett tilgjengelige metalldeler ELEKTRISKE MEDDELELSE OM LEDNINGER Bruk strgmledning av maksimal st rrelse 4 5 m i lengde vurdert for minst av 6 amp 250V fremstilt av ledning IE C 320 koplingsstykke p den ene kanten og p den andre kanten plugg som har blitt godkjent i det landet hvor den siste brukeren befinner seg BRUKSANVISNINGER FOR MONTERING FORSIKTIG Disse modellene er beregnet til bruk i HORISONTAL stilling VERTIKAL MONTERING m lKKE UTF RES uten bruk av et Allied Telesyn vertikal monteringschassis som er spesiallaget til dette form l FORSIKTIG L uftventilene m ikke blokkeres og m ha fri tilgang til luft med romtemperatur for avkj ling FORSIKTIG Gummif ttene m IKKE fjernes fra produktet med mindre en Allied Telesyn vertikal monteringschassis er i bruk DRIFTSTEMPERATUR Dette produktet har blitt fremstilt til bruk med maksimum romtemperatur p 50 grader celsius ALLE LAND Produktet m i
41. t any point the medium only one information signal at a time can be present without disruption BAYONET NUT COUPLE CONNECTOR 10BASE 2 thin coax connector with push on locking lug that quickly locks into place with a half twist BIT RATE BR This is the rate of data throughput on the medium in bits per second E thernet specifies 10 million bits per second BRANCH CABLE The AUI cable interconnecting the DTE and MAU system components also known as a Drop cable 15 Glossary 16 TIME The duration of one bit symbol 1 BR E thernet specifies a bit time of 100 ns COAX segment of E thernet cable that contains MAU CARRIER SENSE MULTIPLE ACCESS with COLLISION DETECT CSMA CD T his is the access method employed by IEEE 802 31 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 contention for the transmission medium CARRIER SENSE naLAN an ongoing activity of a data station to detect whether another station is transmitting COAXIAL CABLE two conductor center conductor shield system concentric constant impedance transmission line used as the trunk medium in the baseband system COAXIAL CABLE SEGMENT length of coaxial cable sections and coaxial connectors and terminated at each end
42. udstyr eller KABLER i perioder med LYNAKTIVITET ADVARSEL DEN STR MF RENDE LEDNING BRUGESTIL ATAFBRYDE STR MMEN SKAL STR MMEN TIL APPARATET AFBRY DES tages ledningen ud af stikket INSTALLATION ELEKTRISK AUTOMATISK SP NDINGSREGULERING Dette apparat vil automatisk tilpasse sig enhver sp nding indenfor de v rdier der er angivet p etiketten ELEKTRISK KLASSE 1 UDSTYR DETTE UDSTYR KR VER JORDFORBINDELSE Stikket skal v re forbundet med en korrekt installeret jordforbunden stikkontakt ukorrekt installeret stikkontakt kan s tte livsfarlig sp nding til tilg ngelige metaldele ELEKTRISK LEDNING Anvend ledning af maksimum 4 5 meters l ngde med en kapacitet p minimum 6 amp 250 v best ende af en E 320 connector med indstgbt HAR ledning i den ene ende og et stik i den anden ende godkendt der er af myndighederne i brugerlandet INSTRUKTIONER FOR OPSTILLING ADVARSEL Disse modeller er konstrueret til at betjenes i HORISONTAL position vandret VERTIKAL OPSTILLING lodret m IKKE FORETAGES uden brug af et Allied Telesyn vertikalt monteringsstel konstrueret til dette form l ADVARSEL Ventilations bninger m ikke blokeres og skal have fri adgang til den omgivende luft i rummet for afk ling ADVARSEL UNDLAD at fjerne gummisoklerne fra apparatet med mindre der anvendes et Allied Telesyn vertikalt monteringsstel BETJ ENINGSTEMPERATUR Dette apparat er konstrueret til en omgivende temperatur p maksimum 50 grader
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