Allied Telesis AT-MR111T User Manual
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Allied Telesis AT-MR111T User Manual

Centrecom two-port ethernet micro repeater models at-mr11xt series, at-mr11x series, at-mr12xt series, at-mr12x series.
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CentreCOM™ Two-Port Ethernet
Micro Repeater Models
AT-MR11xT, AT-MR11x
AT-MR12xT, AT-MR12x
CentreCOM
MR122T
IEEE 802.3 MICRO REPEATER
PN 613-10449-00 Rev. B

User Manual

TM
POWER
COLLISION
RECEIVE
ON LINE
TRANSMIT
PORT 1: 10BASE2
COLLISION
RECEIVE
ON LINE
TRANSMIT
PORT 2: 10BASE-T
LINK
970130

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Summary of Contents for Allied Telesis AT-MR111T

  • Page 1: User Manual

    CentreCOM™ Two-Port Ethernet Micro Repeater Models AT-MR11xT, AT-MR11x AT-MR12xT, AT-MR12x User Manual COLLISION RECEIVE COLLISION RECEIVE ON LINE TRANSMIT ON LINE TRANSMIT CentreCOM POWER LINK MR122T PORT 1: 10BASE2 PORT 2: 10BASE-T IEEE 802.3 MICRO REPEATER PN 613-10449-00 Rev. B 970130...

  • Page 2: Electrical Safety And Installation Requirments

    Electrical Safety and Installation Requirments 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.
  • Page 3 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...
  • Page 4 ELEKTRISK—LEDNING Anvend ledning af maksimum 4,5 meters længde, med en kapacitet på minimum 6 amp., 250 v, bestående af en 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.
  • Page 5 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. INSTALLATION 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.
  • Page 6 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.
  • Page 7 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.
  • Page 8 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.
  • Page 9 IEEE 802.3 MICRO REPEATER 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.

  • Page 10: Aui Connections

    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 media connection provided the AUI meets the IEEE 802.3 standard. (Heartbeat should be disabled).

  • Page 11: 10Base-T (Utp) Connections

    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.

  • Page 12: External Power Supply Micro Repeaters

    This switch allows for use with a UTP cable wired as straight-through (MDI interface) or wired with the TX pair crossed with the RX pair (MDI-X interface). 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).

  • Page 13: Internal Power Supply Micro Repeaters

    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 a BNC port (the AT-MR112T, AT-MR122T, AT-MR114T, AT-MR124T, AT-MR115 and AT-MR125) have a switch for selecting or deselecting the internal 50Ω...
  • Page 14 IEEE 802.3 MICRO REPEATER PORT 2 PORT 1 CentreCOM MR111T MDI X IEEE 802.3 MICRO REPEATER 10 BASE T POWER Figure 4: AT-MR111T Front and Back Panels COLLISION COLLISION COLLISION RECEIVE COLLISION COLLISION RECEIVE ON LINE ON LINE ON LINE...
  • Page 15 COLLISION COLLISION COLLISION RECEIVE COLLISION COLLISION RECEIVE ON LINE ON LINE ON LINE TRANSMIT ON LINE ON LINE TRANSMIT POWER PORT 1: AUI CentreCOM PORT 2: AUI MR113 IEEE 802.3 MICRO REPEATER PORT 2 PORT 1 CentreCOM MR113 IEEE 802.3 MICRO REPEATER POWER Figure 6: AT-MR113 Front and Back Panels...
  • Page 16 COLLISION COLLISION RECEIVE COLLISION COLLISION RECEIVE ON LINE ON LINE TRANSMIT ON LINE ON LINE TRANSMIT POWER PORT 1: 10 BASE 2 PORT 2: 10 BASE2 CentreCOM MR115 IEEE 802.3 MICRO REPEATER PORT 1 PORT 2 TERMINATOR TERMINATOR CentreCOM MR115 IEEE 802.3 MICRO REPEATER 10 BASE 2...
  • Page 17 COLLISION RECEIVE COLLISION RECEIVE ON LINE TRANSMIT ON LINE TRANSMIT CentreCOM POWER MR123 PORT 1: AUI PORT 2: AUI IEEE 802.3 MICRO REPEATER PORT 2 PORT 1 CentreCOM POWER MR123 IEEE 802.3 MICRO REPEATER Figure 11: AT-MR123 Front and Back Panels COLLISION RECEIVE COLLISION...

  • Page 18: Troubleshooting

    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.
  • Page 19 2. Check the media connections and cabling. Excessive collisions may be caused 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. 10Base5 Thick Ethernet 50 Ω...
  • Page 20 The configuration in Figure 15 depicts a 10Base-T Hub connecting to several 10Base2 segments through the AT-MR122T (or AT-MR112T) micro repeater. AUI PORT POWER 10 BASE T NETWORK PORTS 1-12 10Base-T UTP 100 Meters Max. 2 MAU Max. (Pt. to Pt.) Media Converter (Repeater) PORT 2...
  • Page 21 Figure 17 shows how an AT-MR114 (or AT-MR124) connects a 10Base2 segment to a 10Base5 backbone. 10Base5 Thick Ethernet 500 Meters and 100 MAU Max. 50 Ω 50 Ω Terminator Terminator 10Base5 XCVR AUI Cable 50 Meters Max. PORT 2 PORT 1 CentreCOM MR114...

  • Page 22: Ieee 802.3 Quick Primer

    IEEE 802.3 Quick Primer AUI "Drop" Cables 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-sub connector. AUI "Drop" cables may have a maximum 257ns propagation delay for computing the worst case propagation delay of a cable system.

  • Page 23: Thick (10Base5) Ethernet

    Thick (10Base5) Ethernet When configuring thick coax segments, IEEE 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 Ω 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.

  • Page 24: Where To Find Us

    Where to Find Us For Technical Support or Service Location Phone Americas 1 (800) 428-4835 1 (206) 481-3790 United States, Canada, Mexico, Central America, South America Asia (+65) 3815-613 (+65) 3833-830 Singapore, Taiwan, Thailand, Malaysia, Indonesia, Korea, Philippines, China, India Australia (612) 416-0619 (612) 416-9764...
  • Page 25 For Sales Information United States Canada Scottsdale, AZ Richmond, British Columbia Tel: (602) 423-7087, Fax: (602) 423-7088 Tel: (604) 244-0678, Fax: (604) 270-3644 Los Angeles, CA Rexdale, Ontario Tel: (310) 412-8684, Fax: (310) 412-8685 Tel: (416) 675-6738, Fax: (416) 675-0057 Mission Viejo, CA Germany Tel: (714) 699-0628, Fax: (714) 699-0276...
  • Page 26 Ethernet™ is a registered trademark of Xerox Corporation. Copyright 1997 Allied Telesyn International, Corp. CentreCOM™ is a trademark of Allied Telesyn International, Corp. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International, Corp. Allied Telesyn International, Corp.

This manual is also suitable for:

At-mr112tAt-mr114At-mr115At-mr113At-mr121tAt-mr122t ... Show all

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