Allied Telesis AT-MR111T User manual

CentreCOM™ Two-Port Ethernet
Micro Repeater Models
AT-MR11xT, AT-MR11x
AT-MR12xT, AT-MR12x
User Manual
POWER
CentreCOMTM
MR 122T
IEEE 802.3 MICRO REPEATER PORT 1: 10BASE2
ON LINE
COLLISION
TRANSMIT
RECEIVE COLLISION
TRANSMIT
LINK
PORT 2: 10BASE-T
RECEIVE
ON LINE
PN 613-10449-00 Rev. B 970130
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Electrical Safety and Installation Requirments
STANDARDS : This product meets the following standards
RFI Emission EN55022 Class A
WARNING : In a domestic environment this product may cause radio interference in which case the user may be required
to take adequate measures.
Immunity EN50082-1
These products have been safety tested by UL to Standard UL 1950, CSA to CSA 950 and by TUV to EN60950.
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.
LIGHTNING DANGER
DANGER: DO NOT WORK on equipment or CABLES during periods of LIGHTNING ACTIVITY.
CAUTION : POWER CORD IS USED AS A DISCONNECTION DEVICE. TO DE-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 1 EQUIPMENT
THIS EQUIPMENT MUST BE EARTHED. Power plug must be connected to a properly wiredearthground socketoutlet.An
improperly wired socket outlet could place hazardous voltages on accessible metal parts.
ELECTRICAL—CORD NOTICE
Use power cord, maximum 4.5 meters long, rated 6 amp minimum, 250V, made of HAR cordage molded IEC 320
connector on one end and on the other end a plug approved by the country of end use.
CAUTION : Air vents must not be blocked and must have free access to the room ambient air for cooling.
OPERATING TEMPERATURE
This product is designed for a maximum ambient temperature of 40 degrees C.
ALL COUNTRIES: Install product in accordance with local and National Electrical Codes.
U.S. Federal Communications
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 FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy 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 in which case the user will be required to correct the interference at his own expense.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to
operate this equipment.
Canadian Department of Communications
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
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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
Die Sicherheitsprüfung dieser Produkte wurde von Underwriters Laboratories Inc. gemäß Norm 1950, CSA nach CSA 950
und gemäß TÜV nach EN60950 durchgeführt.
SICHERHEIT
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.Toavoid thepossibility of ELECTRIC SHOCK
disconnect electric power to the product before connecting or disconnecting the LAN cables.
LIGHTNING DANGER
DANGER: DO NOT WORK on equipment or CABLES during periods of LIGHTNING ACTIVITY.
VORSICHT : DAS NETZKABEL DIENT ZUM TRENNEN DER STROMVERSORGUNG. ZUR TRENNUNG VOM NETZ, KABEL
AUS DER STECKDOSE ZIEHEN.
INSTALLATION
AUTOMATISCHE SPANNUNGSEINSTELLUNG Dieses Gerät stellt sich automatisch auf die auf dem Etikett aufgeführten
Spannungswerte ein.
GERÄTE DER KLASSE 1
DIESE GERÄTE MÜSSEN GEERDET SEIN. Der Netzstecker darf nur mit einer vorschriftsmäßig geerdeten Steckdose
verbunden werden. Ein unvorschriftsmäßiger Anschluß kann die Metallteile des Gehauses unter gefährliche elektrische
Spannungen setzen.
NETZKABEL
Das Netzkabel sollte eine maximale Länge von 4,5 Metern, einen Nennwert von mindestens6Aund250Vhaben,ausHAR-
Material hergestellt und mit einer gepreßten, IEC 320 entsprechenden, Anschlußverbindung an einem Ende, und am
anderen Ende mit einem im Land des Endverbrauchers geprüften Stecker ausgestattet sein.
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 40 ° C entworfen.
ALLE LÄNDER: Installation muß örtlichen und nationalen elektrischen Vorschriften entsprechen.
Standarder: Dette produkt tilfredsstiller de følgende standarder.
Radiofrekvens forstyrrelsesemission EN55022 Klasse A
ADVARSEL : I et hjemligt miljø kunne dette produkt forårsage radio forstyrrelse. Bliver det tilfældet, påkræves brugeren
muligvis at tage tilstrækkelige foranstaltninger.
Immunitet EN50082-1
Disse produkter er blevet sikkerhedstestet af UL til Standard 1950, CSA til CSA 950 og af TUV til EN60950.
SIKKERHED
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.
FARE UNDER UVEJR
FARE: UNDLAD at arbejde på udstyr eller KABLER i perioder med LYNAKTIVITET.
ADVARSEL : DEN STRØMFØRENDE LEDNING BRUGES TIL AT AFBRYDE STRØMMEN. SKALSTRØMMENTILAPPARATET
AFBRYDES, tages ledningen ud af stikket.
INSTALLATION
ELEKTRISK—AUTOMATISKSPÆNDINGSREGULERING Detteapparatvilautomatisktilpassesig enhverspændingindenfor
de værdier, der er angivet på etiketten.
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.
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ELEKTRISK—LEDNING
Anvend ledning af maksimum 4,5 meters længde, med en kapacitet på minimum 6 amp., 250 v, bestående afen IEC 320
connector med indstøbt HAR ledning i den ene ende og et stik i den anden ende, der er godkendt af myndighederne i
brugerlandet.
ADVARSEL : Ventilationsåbninger må ikke blokeres og skal have fri adgang til den omgivende luft i rummet for afkøling.
BETJENINGSTEMPERATUR
Dette apparat er konstrueret til en omgivende temperatur på maksimum 40 grader C.
ALLE LANDE: Installation af produktet skal ske i overensstemmelse med lokal og national lovgivning for elektriske
installationer.
Eisen: Dit product voldoet aan de volgende eisen.
RFI Emissie EN55022 Klasse A
WAARSCHUWING : Binnenshuis kan dit product radiostoring veroorzaken, in welk geval de gebruiker verplicht kan worden
om gepaste maatregelen te nemen.
Immuniteit EN50082-1
De veiligheid van deze produkten is door UL getest volgens norm 1950, CSA tot CSA 950 en door TUV volgens EN60950.
VEILIGHEID
WAARSCHUWINGEN MET BETREKKING TOT ELEKTRICITEIT
WAARSCHUWING: GEVAAR VOOR ELEKTRISCHESCHOKKEN Verwijder hetdeksel niet, teneindeELEKTRISCHE schokken
te voorkomen. Binnenin bevindenzichgeenonderdelendiedoordegebruikeronderhoudenkunnenworden.Dittoestelstaat
onder GEVAARLIJKE SPANNING en mag alleen worden geopend door een daartoe opgeleide en bevoegde technicus. Om
het gevaar op ELEKTRISCHE SCHOKKEN te vermijden, moet u 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 STROOMLOOS TE MAKEN: de stroomkabel ontkoppelen.
INSTALLATIE
ELEKTRISCH: AUTOMATISCHE AANPASSING VAN DE SPANNING Dit toestel past zich automatisch aan elke spanning aan,
tussen de op het label vermelde waarden.
ELEKTRISCHE TOESTELLEN VAN KLASSE 1
DIT TOESTEL MOET GEAARD WORDEN. De stekker moet aangesloten zijn op een juist geaarde contactdoos. Een onjuist
geaarde contactdoos kan 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 ampåçère, 250 V, uit HAR
vervaardigd, met aan het ene uiteinde een gevormd IEC 320 aansluitstuk en aan het andere uiteinde een stekker die
goedgekeurd is door het land waar het toestel gebruikt zal worden.
OPGELET : De ventilatiegaten mogen niet worden gesperd en moeten de omgevingslucht ongehinderd toelaten voor
afkoeling.
BEDRIJFSTEMPERATUUR
De omgevingstemperatuur voor dit produkt mag niet meer bedragen dan 40 graden Celsius.
ALLE LANDEN: het toestel installeren overeenkomstig de lokale en nationale elektrische voorschriften.
NORMES: ce produit est conforme aux normes de suivantes :
Emission d’interférences radioélectriques EN55022 Classe A
MISE EN GARDE : dans un environnement domestique, ce produit peut provoquer des interférences radioélectriques.
Auquel cas, l’utilisateur devra prendre les mesures adéquates.
Immunité EN50082 - 1
La sécurité de ces matériels a été testée par UL conformément à la norme UL 1950, CSA à CSA 950 et par TUV
conformément à la norme EN60950.
SÉCURITÉ
INFORMATION SUR LES RISQUES ÉLECTRIQUES AVERTISSEMEN: 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 doitêtre ouvertqueparuntechnicien
dûment qualifié. Pour éviter tout risque d’ÉLECTROCUTION, débrancher le matériel avant de connecter ou de déconnecter
les câbles LAN.
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DANGER DE FOUDRE
DANGER : NE PAS MANIER le matériel ou les CÂBLES lors d’activité orageuse.
ATTENTION : LE CORDON D’ALIMENTATION SERT DE MISE HORS CIRCUIT. POUR COUPER L’ALIMENTATION DU
MATÉRIEL, débrancher le cordon.
I NSTALLATION
RÉGLAGE DE TENSION AUTOMATIQUE ÉLECTRIQUE
Ce matériel peut s’ajuster automatiquement sur n’importe quelle tension comprise dans la plage indiquée sur l’étiquette.
ÉQUIPEMENT DE CLASSE 1 ÉLECTRIQUE
CE MATÉRIEL DOIT ÊTRE MIS A LA TERRE. La prise de courant doit être branchée dans une prise femelle correctement
mise à la terre car des tensions dangereuses risqueraient d’atteindre les pièces métalliques accessibles à l’utilisateur.
INFORMATION SUR LE CORDON ÉLECTRIQUE
Utiliser un cordon secteur de 4.5 mètres de long maximum, calibré à 6 ampères minimum, 250V, fabriquéencâblageHAR
avec connecteur IEC 32C moulé à une extrémité, et à l’autre extrémité, une prisedecourantmâlerépondantauxnormesdu
pays d’utilisation.
ATTENTION: Ne pas bloquer les fentes d’aération, ceci empêcherait l’air ambiant de circuler librement pour le
refroidissement.
TEMPÉRATURE DE FONCTIONNEMENT
Ce matériel est capable de tolérer une température ambiante maximum de 40 degrés Celsius.
POUR TOUS PAYS : Installer le matériel conformément aux normes électriques nationales et locales.
Standardit: Tämä tuote on seuraavien standardien mukainen.
Radioaaltojen häirintä EN55022 Luokka A
VAROITUS : Kotiolosuhteissa tämä laite voi aiheuttaa radioaaltojen häiröitä, missä tapauksessa laitteen käyttäjän on
mahdollisesti ryhdyttävä tarpeellisiin toimenpiteisiin.
KestävyysEN50082-1UL on turvatestannut nämätuotteet Standard 1950 mukaisesti,CSA standardin CSA 950 mukaisesti
ja TUV standardin EN60950 mukaisesti.
TURVALLISUUS
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.
SALAMANISKUVAARA
HENGENVAARA: ÄLÄ TYÖSKENTELE laitteiden tai KAAPELEIDEN KANSSA SALAMOINNIN AIKANA.
HUOMAUTUS : VIRTAJOHTOA KÄYTETÄÄN VIRRANKATKAISULAITTEENA. VIRTA KATKAISTAAN irrottamalla virtajohto.
INSTALLATION
SÄHKÖ—AUTOMAATTINEN JÄNNITTEENSÄÄTÖ
Tämä tuote säätää automaattisesti mihin tahansa jännitteeseen ohjetarrassa annettujen arvojen välillä.
SÄHKÖ—TYYPPILUOKAN 1 LAITTEET
TÄMÄ LAITE TÄYTYY MAADOITTAA. Pistoke täytyy liittää kunnollisesti maadoitettuun pistorasiaan. Virheellisesti
johdotettu pistorasia voi altistaa metalliosat vaarallisille jännitteille.
SÄHKÖ—JOHTOON LIITTYVÄ HUOMAUTUS
Käytä seuraavanlaista virtajohtoa: maksimipituus 4,5 metriä, minimiteho 6 ampeeria, 250 V, valmistettu HAR-
johdostosta, muovattu IEC 320 -liitin toisessa päässä ja käyttömaassa hyväksytty pistoke toisessa päässä.
HUOMAUTUS : Ilmavaihtoreikiä ei pidä tukkia ja niillä täytyy olla vapaa yhteys ympäröivään huoneilmaan,jotta ilmanvaihto
tapahtuisi.
KÄYTTÖLÄMPÖTILA
Tämä tuote on suunniteltu ympäröivän ilman maksimilämpötilalle (40-50) ° C.
KAIKKI MAAT: Asenna tuote paikallisten ja kansallisten sähköturvallisuusmääräysten mukaisesti.
Standard: Questo prodotto è conforme ai seguenti standard.
Emissione RFI (interferenza di radiofrequenza) EN55022 Classe A
AVVERTENZA : in ambiente domestico questo prodotto potrebbe causare radio interferenza. In questo caso potrebbe
richiedersi all’utente di prendere gli adeguati provvedimenti.
Immunità EN50082-1
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Questi prodotti sono stati sottoposti a collaudi di sicurezza dai seguenti enti: dalla UL in conformità allo standard 1950,
dalla CSA in conformità allo standard CSA 950 e dal TUV in conformità allo standard EN60950.
NORME DI SICUREZZA
AVVERTENZE ELETTRICHE ATTENZIONE: PERICOLO DI SCOSSE ELETTRICHE
Per evitare SCOSSE ELETTRICHE non asportare il coperchio. Le componenti interne non sono riparabilidall’utente.Questa
unità ha TENSIONI PERICOLOSE e va aperta solamente da un tecnico specializzatoequalificato.Perevitareognipossibilità
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 CAVO DI ALIMENTAZIONE È USATO COME DISPOSITIVO DI DISATTIVAZIONE. PER TOGLIERE LA
CORRENTE AL DISPOSITIVO staccare il cavo di alimentazione.
INSTALLAZIONE
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. Una presa non cablata in maniera corretta rischia di scaricare una tensione
pericolosa su parti metalliche accessibili.
ELETTRICITÀ—AVVERTENZA SUL CAVO
Usare un cavo della lunghezza massima di metri 4,5, con capacità minima di 6 A, 250 V, di filo HAR, dotato di connettore
stampato IEC 320 ad un’estremità e di spina approvata dal paese di destinazione all’altra.
ATTENZIONE : le prese d’aria non vanno ostruite e devono consentire il libero ricircolo dell’aria ambiente per il
raffreddamento.
TEMPERATURA DI FUNZIONAMENTO
Questo prodotto è concepito per una temperatura ambientale massima di 40 gradi centigradi.
TUTTI I PAESI: installare il prodotto in conformità delle vigenti normative elettriche nazionali.
Sikkerhetsnormer: Dette produktet tilfredsstiller følgende sikkerhetsnormer.
RFI stråling EN55022 Klasse A
ADVARSEL : Hvis dette produktet benyttes til privat bruk, kan produktet forårsake radioforstyrrelse. Hvis dette skjer, må
brukeren ta de nødvendige forholdsregler.
Immunitet EN50082-1
Disse produktene er blitt sikkerhetstestet av UL i forhold til standard 1950, CSA i forhold til CSA 950, og av TUV i forhold
til EN60950.
SIKKERHET
ELEKTRISITET
ADVARSEL : FARE FOR ELEKTRISK SJOKK
For å unngå ELEKTRISK sjokk, må dekslet ikke tas av. Det finnes ingen deler som 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 LAN-kablene til- eller frakobles.
FARE FOR LYNNEDSLAG
FARE: ARBEID IKKE på utstyr eller KABLER i TORDENVÆR.
FORSIKTIG : STRØMLEDNINGEN BRUKES TIL Å FRAKOBLE UTSTYRET. FOR Å DEAKTIVISERE UTSTYRET, må
strømforsyningen kobles fra.
INSTALLASJON
ELEKTRISK—AUTO SPENNINGSTILPASNING
Dette produktet vil automatisk bli tilpasset hvilken som helst strømspenning i de områdene som vises på etiketten.
ELEKTRISK—TYPE 1- KLASSE UTSTYR
DETTE UTSTYRET MÅ JORDES. Strømkontakten må være tilkoplet en korrekt jordet kontakt. En kontakt som ikke er
korrekt jordet kan føre til farlig spenninger i lett t ilgjengelige metalldeler.
ELEKTRISK—MEDDELELSE OM LEDNINGER
Bruk en strømledning av maksimalt 4.5 m. i lengde, godkjent for minst av 6 amp, 250V, fremstilt av HARledningIEC320
koplingsstykke i den ene enden, og i den andre enden en plugg som er blitt godkjent i brukerlandet.
FORSIKTIG : Lufteventilene må ikke blokkeres, og må ha fri tilgang til luft med romtemperatur for avkjøling.
DRIFTSTEMPERATUR
Dette produktet er konstruert for bruk i maksimum romtemperatur på 40 grader celsius.
ALLE LAND: Produktet må installeres i samsvar med de lokale og nasjonale elektriske koder.
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Padrões: Este produto atende aos seguintes padrões.
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.
Imunidade EN50082-1
Estes produtos foram testados pela UL quanto a aspectos de segurança no Padrão 1950, CSA a CSA 950, e pela TUV no
EN60950.
SEGURANÇA
AVISOS SOBRE CARACTERÍSTICAS ELÉTRICAS ATENÇÃO: PERIGO DE CHOQUE ELÉTRICO
Para evitar CHOQUE ELÉTRICO, não retire a tampa. Não contém peças que possam ser consertadas pelo usuário. Este
aparelho contém VOLTAGENS PERIGOSAS e só deve ser aberto por um técnico qualificado e treinado. Para evitar a
possibilidade de CHOQUE ELÉTRICO,desconecteoaparelhodafontedeenergiaelétricaantesdeconectaredesconectaros
cabos da LAN.
PERIGO DE CHOQUE CAUSADO POR RAIO PERIGO: NÃO TRABALHE no equipamento ou nos CABOS durante períodos
suscetíveis a QUEDAS DE RAIO.
CUIDADO : O CABO DE ALIMENTAÇÃO É UTILIZADO COMO UM DISPOSITIVO DE DESCONEXÃO.PARADESELETRIFICAR
O EQUIPAMENTO, desconecte o cabo de ALIMENTAÇÃO.
INSTALAÇÃO
ELÉTRICO—AJUSTE AUTOMÁTICO DE VOLTAGEM
Este produto ajustar-se-á automaticamente a qualquer voltagem que esteja dentro dos limites indicados no rótulo.
ELÉTRICO—EQUIPAMENTOS DO TIPO CLASSE 1
DEVE SER FEITA LIGAÇÃO DE FIO TERRA PARA ESTE EQUIPAMENTO. O plugue de alimentaçãodeveserconectadoauma
tomada com adequada ligação de fio terra. Tomadas sem adequada ligação de fio terra podem transmitir voltagens
perigosas a peças metálicas expostas.
ELÉTRICO—AVISO SOBRE O CABO DE ALIMENTAÇÃO
Use cabo de alimentação com comprimento máximo de 4,5 metros, com uma capacidadeindicadamínimade6ampe250
V, fabricado de material para cabo HAR com conector moldado IEC 320 em uma extremidade e, na outra extremidade, um
plugue aprovado para uso no país em questão.
CUIDADO : As aberturas de ventilação não devem ser bloqueadas e devem ter acesso livre ao ar ambiente para
arrefecimento adequado do aparelho.
TEMPERATURA DE FUNCIONAMENTO
Este produto foi projetado para uma temperatura ambiente máxima de 40 graus centígrados.
TODOS OS PAÍSES: Instale o produto de acordo com as normas nacionais e locais para instalações elétricas.
Estándares: Este producto cumple con los siguientes estándares.
Emisión RFI EN55022 Clase A
ADVERTENCIA : en un entorno doméstico, este producto puede causar radiointerferencias, en cuyo caso, puede requerirse
del usuario que tome las medidas que sean convenientes al respecto.
Inmunidad EN50082-1
LaseguridaddeestosproductoshasidoprobadaporULconformeconlaNorma1950,CSAaCSA950,yporTUVconforme
con EN60950.
SEGURIDAD
AVISOS ELECTRICOS ADVERTENCIA: PELIGRO DE ELECTROCHOQUE Para evitar un ELECTROCHOQUE, no quite la tapa.
No hay ningún componente en el interior al cual puede prestar servicio el usuario. Esta unidad contiene VOLTAJES
PELIGROSOS y sólo deberá abrirla un técnico entrenado y calificado. Para evitar la posibilidad de ELECTROCHOQUE
desconecte la corriente eléctrica que llega al producto antes de conectar o desconectar los cables LAN.
PELIGRO DE RAYOS
PELIGRO: NO REALICE NINGUN TIPO DE TRABAJO O CONEXION en los equipos o en LOS CABLES durante TORMENTAS
ELECTRICAS.
ATENCION : EL CABLE DE ALIMENTACION SE USA COMO UN DISPOSITIVO DE DESCONEXION. PARA DESACTIVAR EL
EQUIPO, desconecte el cable de alimentación.
INSTALACION
ELECTRICO—AUTO-AJUSTE DE TENSION
Este producto se ajustará automáticamente a cualquier tensión entre los valores máximos y mínimos indicados en la
etiqueta.
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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. Un enchufe que no está correctamente instalado podría ocasionar tensiones peligrosas en las partes metálicas
que están expuestas.
ELECTRICO—ADVERTENCIA SOBRE EL CABLE
Use un cable eléctrico con un máximo de 4,5 metros de largo, con una capacidad mínima de 6 amperios, 250 V, hecho de
cable HAR, con el conector moldeado IEC 320 en un extremo y con un enchufe que está aprobado por el país de uso final
en el otro.
ATENCION : Las aberturas para ventilación no deberán bloquearse y deberán tener acceso libre al aire ambiental de la sala
para su enfriamiento.
TEMPERATURA REQUERIDA PARA LA OPERACIÓN
Este producto está diseñado para una temperatura ambiental máxima de 40 grados C.
PARA TODOS LOS PAÍSES: Monte el producto de acuerdo con los Códigos Eléctricos locales y nacionales.
Standarder: Denna produkt uppfyller följande standarder.
Radiostörning EN55022 Klass A
VARNING : Denna produkt kan ge upphov till radiostörningar i hemmet, vilket kan tvinga användaren till att vidtaga
erforderliga åtgärder.
Immunitet EN50082-1
Dessa produkter har säkerhetstestats av UL i enlighet med Standard 1950, av CSA i enlighet med CSA 950, och av TUV i
enlighet med EN60950.
SÄKERHET
TILLKÄNNAGIVANDEN BETRÄFFANDE ELEKTRICITETSRISK :
RISK FÖR ELEKTRISK STÖTFör att undvika ELEKTRISK stöt, ta ej av locket. Det finns inga delar inuti som behöver
underhållas. Denna apparat är under HÖGSPÄNNING och får endast öppnas av en utbildad kvalificerad tekniker. För att
undvika ELEKTRISK STÖT, koppla ifrån produktens strömanslutning innan LAN-kablarna ansluts eller kopplas ur.
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.
INSTALLATION
ELEKTRISKT—AUTOMATISK SPÄNNINGSJUSTERING
Denna produkt justeras automatiskt till alla spänningar inom omfånget som indikeras på produktens märkning.
ELEKTRISKT—TYP KLASS 1 UTRUSTNING
DENNA UTRUSTNING MÅSTE VARA JORDAD. Nätkabeln måste vara ansluten till ett ordentligt jordat uttag. Ett felaktigt
uttag kan göra att närliggande metalldelar utsätts för högspänning.Apparatenskallanslutastilljordatuttag,närdenansluts
till ett nätverk.
ELEKTRISKT—NMÄRKNING BETRÄFFANDE KABELN
Använd en kabel med maximum längd 4,5 meter och minimum 6 amp nominal, 250V, av HAR kabelfabrikat med ett
specialutformat IEC 320-kontaktdon i ena änden och i den andra en plugg som godkänts i landet där produkten används.
VARNING : Luftventilerna får ej blockeras och måste ha fri tillgång till omgivande rumsluft för avsvalning.
DRIFTSTEMPERATUR
Denna produkt är konstruerad för rumstemperatur ej överstigande (40 eller 50 ) grader Celsius.
ALLA LÄNDER: Installera produkten i enlighet med lokala och statliga bestämmelser för elektrisk utrustning.
vii
MR11x/MR12x.4Web Page 8 Monday, February 24, 1997 11:33 AM

Overview
CentreCOM™ Micro Repeaters are two-port media converters designed for
Ethernet coax and Unshielded Twisted Pair (UTP) network segments. The
product family includes a series with internal power supplies (AT-MR12x as
illustrated in Figure 1) and with external power supplies (AT-MR11x).
CentreCOM Micro Repeaters support full length segments on either side, fully
repeated transmission and the maximum number of nodes specified by the
IEEE. Repeating packets results in a higher performance network by
regenerating preamble, retiming the data packets and extending collision
fragments to ensure collision enforcement by all nodes.
Figure 1: AT-MR122T Front and Back Panels
The AT-MR111T and AT-MR121T allow for connection of a UTP 10Base-T
Ethernet segment to a thick (10Base5) segment, and the AT-MR112T and
AT-MR122T allow for connection of a UTP 10Base-T Ethernet segment to a
thin (l0Base2) coaxial segment. Table 1 summarizes the product line.
Table 1: Two-Port Micro Repeater Models
Model Name Power Supply Port 1 Port 2
AT-MR111T External AUI UTP
AT-MR112T External BNC UTP
AT-MR113 External AUI AUI
AT-MR114 External AUI BNC
AT-MR115 External BNC BNC
AT-MR121T Internal AUI UTP
AT-MR122T Internal BNC UTP
AT-MR123 Internal AUI AUI
AT-MR124 Internal AUI BNC
AT-MR125 Internal BNC BNC
POWER
CentreCOMTM
MR 122T
IEEE 802.3 MICRO REPEATER PORT 1: 10BASE2
ON LINE
COLLISION
TRANSMIT
RECEIVE
ON LINE
COLLISION
TRANSMIT
LINK
PORT 2: 10BASE-T
RECEIVE
10BASE-T
PORT 2
POWER
10BASE 2
PORT 1
CentreCOMTM
MR 122T
IEEE 802.3 MICRO REPEATER
OFF ON
TERMINATOR
RJ45 PIN-OUT
MDI MDI X
1
MR11x/MR12x.4Web Page 9 Monday, February 24, 1997 11:33 AM

The AT-MR113 and AT-MR123 connect AUI to AUl, and the AT-MR114 and
AT-MR124 connect 10Base2 to AUI. The AUI will accept any IEEE 802.3
standard transceiver for 10Base5, 10Base2, 10Base-T, FOIRL, or a proprietary
mediaconnectionprovidedtheAUImeetsthe IEEE802.3standard.(Heartbeat
should be disabled).
These media converters utilize state-of-the-art technologies, including a
custom Application Specific Integrated Circuit (ASIC) and Surface Mount
Technology (SMT), which provide enhanced functionality, increased reliability
and improved performance. The use of a proprietary ASIC has permitted Allied
Telesyn to make the CentreCOM Micro Repeaters exceptionally compact while
providing the complete functionality of larger repeaters. The small size of the
units allows for the repeater function to be brought to the desktop or used in
wall mount installation.
Network diagnostic indicators are provided on the front of the micro repeaters
to aid in troubleshooting and fault isolation. Each port has LEDs appropriate
for the medium. For example, on the AT-MR112T and AT-MR122T (BNC to
UTP), both ports have Transmit, Receive, On Line, and Collision indicators. In
addition, the UTP port has a Link integrity indicator.
Cabling
AUI Connections
CentreCOM Micro Repeaters with 15-pin AUI connections may accept up to 50
meters (164 ft.) of IEEE 802.3 AUI cabling. An alternative to using AUI cable
is to attach a CentreCOM Micro Transceiver directly to the AUI connector.
Note
For micro repeaters using external transceivers attached to the AUI port, disable
theSQETest(heartbeat)functionontheexternaltransceiver.RepeatersandSQE
Test function are not compatible.
10Base2 (Thin Coax) Connections
The micro repeater 10Base2 thin Ethernet connections support a full 185
meters (606 ft.) of thin Ethernet coaxial cable. This coax segment will allow up
to 30 Media Access Units (MAU) or transceiver connections including the
connection to the CentreCOM Micro Repeater. The BNC coax connector may be
pluggeddirectlyintotheBNCconnectionwithout using a BNC-Tconnectorand
external 50 Ω terminator. The termination is built in. If the micro repeater is
not on either end of the segment, then the internal 50 Ω termination must be
disabled via the external switch located next to the BNC connector.
2
MR11x/MR12x.4Web Page 10 Monday, February 24, 1997 11:33 AM

10Base-T (UTP) Connections
Micro Repeaters with a UTP port support both straight-through (Figure 2) and
crossed (Figure 3) wiring. The MDI/MDI-X two-position slide switch located
near the RJ45 connector will allow use with either type of cable. If you are not
sure of the UTP cable pinout, set the switch into the position that gives a valid
Link indication for the UTP connection.
Figure 2: 10Base-T UTP Straight-Through
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
TD +
TD -
RD +
Not Used
TD +
TD -
RD +
Not Used
Not Used Not Used
Not Used Not Used
Not Used Not Used
RD - RD -
RJ45 PIN RJ45 PIN
Per IEEE 802.3 specifications
3
MR11x/MR12x.4Web Page 11 Monday, February 24, 1997 11:33 AM

This switch allows for use with a UTP cable wired as straight-through (MDI
interface)orwired withtheTX pair crossedwiththe RX pair(MDI-Xinterface).
That is, when connecting the micro repeater to a 10Base-T repeater or Hub, a
straight-through cable could be used and the switch would be in the
non-crossover position (MDI). If the UTP port is connected to a 10Base-T
transceiver and a straight-through cable is used, then the switch should be in
the crossover (MDI-X) position.
Figure 3: 10Base-T UTP Crossover Cabling
External Power Supply Micro Repeaters
The AT-MR11x Micro Repeaters have external power adapters. Locate a 120
VAC outlet and plug in the provided AC power adapter.
Note
Use only the AC power adapter provided. Using another power adapter may
permanently damage your micro repeater and void your warranty.
Connect the power connector from the AC power adapter to the micro repeater.
The power indicator should illuminate.
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
TD +
TD -
RD +
Not Used
TD +
TD -
RD +
Not Used
Not Used Not Used
Not Used Not Used
Not Used Not Used
RD - RD -
RJ45 PIN RJ45 PIN
Per IEEE 802.3 specifications
4
MR11x/MR12x.4Web Page 12 Monday, February 24, 1997 11:33 AM

Internal Power Supply Micro Repeaters
The AT-MR12x Micro Repeaters have internal universal power supplies.
Locate the 120 or 240 VAC power outlet for the site and plug in the standard-
equipment power cord. Insert the power plug into the micro repeater. The
power indicator should now illuminate.
The CentreCOM Micro Repeaters re-time the Ethernet signal and regenerate
the Ethernet packet and preamble. The micro repeaters also count the number
of consecutive collisions. If this number reaches 32, then the repeater takes the
segment Off Line (partition). If one valid Ethernet packet is received on that
segment, the repeater places the segment On Line automatically, thus,
disconnecting problem segments and reconnecting valid segments dynamically.
Switches
Micro repeaters with an UTP RJ45 port (the AT-MR111T, AT-MR121T,
AT-MR112T and AT-MR122T) have a switch for selecting the UTP crossover
function.Models with aBNC port(the AT-MR112T, AT-MR122T, AT-MR114T,
AT-MR124T, AT-MR115 and AT-MR125) have a switch for selecting or
deselecting the internal 50 Ω termination function for the thinnet connection.
Note
The factory default of the 50 Ω terminator switch is the ON setting. No external
BNC-T and 50 Ω terminator is required when this switch is enabled.
Indicators
The following diagnostic indicators are common to the micro repeaters:
Power— Indicates the AC power adapter is plugged in and providing power to
the micro repeater.
On Line— This indicator is lit when the port is ready for operation and is not
partitioned.
Collision—Indicates a collision detected on that port.
Receive—This indicator will flash whenever a packet is received on that port.
Brief flashes indicate low traffic levels.
Transmit—Indicates micro repeater transmitting a packet out of that port. In
addition to the common indicators, the 10Base-T RJ45 ports have a Link
indicator.
Link—This indicator will illuminate when a valid link is detected on the
Receive pair of the UTP segment. The Link indicator must be lit on the
10Base-T devices on both ends of the UTP segment for Ethernet data to flow.
5
MR11x/MR12x.4Web Page 13 Monday, February 24, 1997 11:33 AM

Figure 4 through Figure 13 show the indicators and ports for all repeaters in
the micro repeater family.
Figure 4: AT-MR111T Front and Back Panels
Figure 5: AT-MR112T Front and Back Panels
MR 111 T
IEEE 802.3 MICRO REPEATER
CentreCOM
TM
PORT 1: AUI
ON LINE
COLLISION
LINKPOWER
COLLISION
ON LINE
RECEIVE
TRANSMIT
COLLISION
ON LINE
RECEIVE
TRANSMIT
PORT 2: 10BASET
COLLISION
ON LINE
COLLISION
ON LINE
MR 111 T
IEEE 802.3
MICRO REPEATER
CentreCOM
POWER
AUI
PORT 1PORT 2
MDI MDI X
10BASET
MR 112 T
IEEE 802.3 MICRO REPEATER
CentreCOMTM PORT 1: 10BASE2
ON LINE
COLLISION
LINKPOWER
COLLISION
ON LINE
RECEIVE
TRANSMIT
COLLISION
ON LINE
RECEIVE
TRANSMIT
PORT 2: 10BASET
COLLISION
ON LINE
COLLISION
ON LINE
MR112T
IEEE 802.3
MICRO REPEATER
CentreCOM
10BASET
PORT 2
O
F
FO
N
TERMINATOR POWER
10BASE2
PORT 1
MDI MDI X
6
MR11x/MR12x.4Web Page 14 Monday, February 24, 1997 11:33 AM

Figure 6: AT-MR113 Front and Back Panels
Figure 7: AT-MR114 Front and Back Panels
MR 113
IEEE 802.3
MICRO REPEATER
CentreCOM
POWER
AUI
PORT 1
AUI
PORT 2
PORT 2: AUI
MR 113
IEEE 802.3 MICRO REPEATER
CentreCOMTM
ON LINE
COLLISION
POWER
COLLISION
ON LINE
RECEIVE
TRANSMIT
COLLISION
ON LINE
COLLISION
ON LINE
COLLISION
ON LINE
RECEIVE
TRANSMIT
PORT 1: AUI
MR 114
IEEE 802.3 MICRO REPEATER
CentreCOMTM
ON LINE
COLLISION
POWER
COLLISION
ON LINE
RECEIVE
TRANSMIT
COLLISION
ON LINE
COLLISION
ON LINE
COLLISION
ON LINE
RECEIVE
TRANSMIT
PORT 1: AUI PORT 2: 10BASE2
MR 114
IEEE 802.3
MICRO REPEATER
CentreCOM
10BASE2
PORT 2
POWER
AUI
PORT 1
O
F
FO
N
TERMINATOR
7
MR11x/MR12x.4Web Page 15 Monday, February 24, 1997 11:33 AM

Figure 8: AT-MR115 Front and Back Panels
Figure 9: AT-MR121T Front and Back Panels
Figure 10: AT-MR122T Front and Back Panels
MR 115
IEEE 802.3 MICRO REPEATER
CentreCOMTM
ON LINE
COLLISION
POWER
COLLISION
ON LINE
COLLISION
ON LINEON LINE
RECEIVE
TRANSMIT
PORT 1: 10BASE2 PORT 2: 10BASE2
MR115
IEEE 802.3
MICRO REPEATER
CentreCOM
O
F
FO
N
POWER
10BASE2
PORT 1
10BASE2
PORT 2
O
F
FO
N
TERMINATOR TERMINATOR TM
COLLISION RECEIVE
TRANSMIT
POWER
CentreCOM TM
MR 121T
IEEE 802.3 MICRO REPEATER PORT 1: AUI
COLLISION
TRANSMIT
RECEIVE
ON LINE
COLLISION
TRANSMIT
LINK
PORT 2: 10BASE-T
RECEIVE
POWER
AUI
PORT 1
CentreCOMTM
MR 121T
IEEE 802.3 MICRO REPEATER
10 BASE-T
PORT 2
RJ45 PIN-OUT
MDI MDI X
ON LINE
POWER
CentreCOMTM
MR 122T
IEEE 802.3 MICRO REPEATER PORT 1: 10BASE2
ON LINE
COLLISION
TRANSMIT
RECEIVE
ON LINE
COLLISION
TRANSMIT
LINK
PORT 2: 10BASE-T
RECEIVE
10BASE-T
PORT 2
POWER
10BASE 2
PORT 1
CentreCOMTM
MR 122T
IEEE 802.3 MICRO REPEATER
OFF ON
TERMINATOR
RJ45 PIN-OUT
MDI MDI X
8
MR11x/MR12x.4Web Page 16 Monday, February 24, 1997 11:33 AM

Figure 11: AT-MR123 Front and Back Panels
Figure 12: AT-MR124 Front and Back Panels
Figure 13: AT-MR125 Front and Back Panels
POWER
CentreCOM TM
MR 123
IEEE 802.3 MICRO REPEATER PORT 1: AUI
ON LINE
COLLISION
TRANSMIT
RECEIVE
ON LINE
COLLISION
TRANSMIT
PORT 2: AUI
RECEIVE
POWER
AUI
PORT 1
CentreCOMTM
MR 123
IEEE 802.3 MICRO REPEATER
AUI
PORT 2
POWER
CentreCOM TM
MR 124
IEEE 802.3 MICRO REPEATER PORT 1: AUI
ON LINE
COLLISION
TRANSMIT
RECEIVE
ON LINE
COLLISION
TRANSMIT
PORT 2: 10BASE2
RECEIVE
POWER
AUI
PORT 1
CentreCOMTM
MR 124
IEEE 802.3 MICRO REPEATER
10 BASE 2
PORT 2
OFF ON
TERMINATOR
POWER
CentreCOM TM
MR 125
IEEE 802.3 MICRO REPEATER PORT 1: 10BASE2
ON LINE
COLLISION
TRANSMIT
RECEIVE
ON LINE
COLLISION
TRANSMIT
PORT 2: 10BASE2
RECEIVE
10 BASE 2
PORT 2
POWER
10 BASE 2
PORT 1
CentreCOMTM
MR 125
IEEE 802.3 MICRO REPEATER
OFF ON
TERMINATOR
OFF ON
TERMINATOR
9
MR11x/MR12x.4Web Page 17 Monday, February 24, 1997 11:33 AM

Troubleshooting
Caution
On a repeater with an external power supply, there's no power indication.
1. Check the AC power adapter at the AC receptacle and ensure that there is
AC power available.
2. Also, ensure that the power plug at the micro repeater is properly seated.
3. If there is still no power indication on a unit with an external power supply
replace the power adapter and test again.
Caution
Power LED is lit but no packets are getting through (no network connections
across the repeater).
1. Check to see if the port is receiving or transmitting packets by checking the
Receive and Transmit indicators.
2. Check port connections and wiring. Check link indications on a 10Base-T
segment (see below) and termination on a 10Base2 segment (see below).
3. Check for excessive collisions (see below).
4. Try another known good repeater to test and validate the segment.
Caution
On a 10Base-T UTP port, the Link indicator is not illuminated.
❑With 10Base-T Ethernet, most problems are with the UTP wiring.
1. Check that the UTP crossover switch is properly set. You cannot harm
anything by changing the setting. If the Link indicator comes on, the
transmit and receive polarity was backwards for your configuration.
For micro repeater to 10Base-T Hub connections, use a straight-through
cableand setthe switchto the MDIposition. Forconnecting amicro repeater
to a 10Base-T transceiver or network interface card, use a crossover cable
and set the switch to the MDI-X position.
2. Use only UTP cable designed for use in 10Base-T applications. 10Base-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.
Caution
Ona10Base2BNCport,thereare too many collisionsorpacketsarenotgetting
through.
10
MR11x/MR12x.4Web Page 18 Monday, February 24, 1997 11:33 AM

1. Verify that the segment is properly terminated on both ends and that there
is no other termination between these two points. You may plug the BNC
connector directly into the micro repeater BNC connection if the internal
50 Ωtermination function is enabled. If a BNC-T connector is to be used, the
internal 50 Ωtermination function should be disabled. Using an Ohm meter
(DMM or VOM), it is possible to statically test the coaxial segment. With
terminators in place, measure the resistance of the cable from the male
connector of a BNC-T. Touch one of the meter's probes to the inner pin and
the other probe to the outside of the BNC-T. You should read between 25Ω
and 30 Ωresistance.
Caution
Too many collisions.
1. On an AUI port, make certain that the SQE Test (heartbeat) switch is OFF
on any transceiver attached to the port.
2. Checkthemediaconnectionsandcabling.Excessivecollisionsmaybecaused
by a faulty cable or connection.
Network loading can also cause excessive collisions.
Configurations
The configuration in Figure 14 demonstrates how the AT-MR111T (or
AT-MR121T) can be used to connect 10Base-T devices.
Figure 14: AT-MR111T AUI to RJ45
MR111T
IEEE 802.3
MICRO REPEATER
CentreCOM
POWER
AUI
PORT 1PORT 2
MDI MDI X
10BASET
TM
MR111T
IEEE 802.3
MICRO REPEATER
CentreCOM
POWER
AUI
PORT 1PORT 2
MDI MDI X
10BASET
TM
10BASE5
XCVR 10BASE5 XCVR
10Base5 Thick Ethernet
500 Meters and 100 MAUs Max.
10Base-T UTP
100 Meters Max.
2 MAU Max. (Pt. to Pt.)
50 Ω
Terminator
50 Ω
Terminator
POWER
1211109 8765 4321
XXXX XXXX XXXX
10BASET NET WORK PORTS1-12
AUI PORT
11
MR11x/MR12x.4Web Page 19 Monday, February 24, 1997 11:33 AM

The configuration in Figure 15 depicts a 10Base-T Hub connecting to several
10Base2 segments through the AT-MR122T (or AT-MR112T) micro repeater.
Figure 15: AT-MR122T BNC to RJ45
The configuration in Figure 16 shows how an AT-MR113 (or AT-MR123)
connects two 10Base5 segments.
Figure 16: AT-MR113 AUI to AUI
10Base-T UTP
100 Meters Max.
2 MAU Max. (Pt. to Pt.)
10BASE-T
PORT 2
POWER
10BASE 2
PORT 1
CentreCOMTM
MR122T
IEEE 802.3 MICRO REPEATER
OFF ON
TERMINATOR
RJ45 PIN-OUT
MDI MDI X
10BASE-T
PORT 2
POWER
10BASE 2
PORT 1
CentreCOMTM
MR122T
IEEE 802.3 MICRO REPEATER
OFF ON
TERMINATOR
RJ45 PIN-OUT
MDI MDI X
10BASE-T
PORT 2
POWER
10BASE 2
PORT 1
CentreCOMTM
MR122T
IEEE 802.3 MICRO REPEATER
OFF ON
TERMINATOR
RJ45 PIN-OUT
MDI MDI X
Thin Ethernet
185 Meters Max.
30 MAU Max.
50 Ω
Terminator
Media Converter
(Repeater)
POWER
1211109 8765 4321
XXXX XXXX XXXX
10BASE T NETWORK PORTS 1-12
AUI PORT
MR 113
IEEE 802.3
MICRO REPEATER
CentreCOM
POWER
AUI
PORT 1
AUI
PORT 2
TM
AT-206
AT-206
10Base5 Thick Ethernet
10Base5 Thick Ethernet
12
MR11x/MR12x.4Web Page 20 Monday, February 24, 1997 11:33 AM