User Manual

ManualsBrandsAllied Telesis ManualsComputer HardwareAT-MC12T

The CentreCOM

AT-MC12T

Media Converter User’s Guide

Overview

The Allied Telesyn AT-MC12T is used in addition to a transceiver

(MAU) to convert another Ethernet physical layer to 10BASE-T. It is

connected to a transceiver of the required conversion type. The

power adapter supplies power to the AT-MC12T and to the attached

transceiver.

Table 1:

Possible Media Conversion

MDI/MDI-X Switch

The MDI/MDI-X switch located on the side of the unit, is a straight-

through crossover cable selection switch. It enables the 10BASE-T

(RJ45) port to be connected to a repeater or to a DTE without using a

special crossover cable.

The default setting of the switch is MDI-X, which means you can

connect the 10BASE-T port to a workstation or to any other DTE that

uses a straight-through cable. In the MDI conﬁguration, slide the

switch to the MDI side and you can connect the 10BASE-T port to a

repeater/hub/concentrator using a straight-through cable.

Figure 1:

Typical Configuration

Transceiver (MAU) Conversion Type

MC12T MX40F, MX55F, MX50

(10BASE-FL MAU)

UTP—Fiber Optic

MC12T MX10S

(10BASE2 MAU)

UTP—Thin Coax

10BASE-T

REPEATER

or 10BASE-T

WORKSTATION

NODE

AT-MC12T AT-MX

Summary of content (4 pages)

PAGE 1
The CentreCOM AT-MC12T Media Converter User’s Guide Overview The Allied Telesyn AT-MC12T is used in addition to a transceiver (MAU) to convert another Ethernet physical layer to 10BASE-T. It is connected to a transceiver of the required conversion type. The power adapter supplies power to the AT-MC12T and to the attached transceiver.
PAGE 2
Table 2: RJ45 Pinout RJ45—MDI Pinout Pin Signal 1 TD+ 2 TD3 RD+ 6 RD4, 5, 7, 8 N/A RJ45—MDI-X Pinout Pin Signal 1 RD+ 2 RD3 TD+ 6 TD4, 5, 7, 8 N/A NOTE The transceiver (MAU) attached at the AUI connector must have the SQE (heartbeat) test disabled for proper operation.
PAGE 3
Electrical Safety and Installation Requirements RADIATED ENERGY U.S. Federal Communications 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 4
. Pour tous pays : Installer le matériel conformément aux normes électriques nationales et locales. Radioaaltojen häirintä EN55022 Luokka A VAROITUS: Kotiolosuhteissa tämä laite voi aiheuttaa radioaaltojen häiröitä, missä tapauksessa laitteen käyttäjän on mahdollisesti ryhdyttävä tarpeellisiin toimenpiteisiin. Kestävyys EN50082-1 Sähköturvallisuus EN60950, UL1950, CSA 950 TURVALLISUUS SALAMANISKUVAARA HENGENVAARA: ÄLÄ TYÖSKENTELE laitteiden tai KAAPELEIDEN KANSSA SALAMOINNIN AIKANA.