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AT-CM301 and AT-CM302 Fast Ethernet

Media Converters Installation Guide

Overview

The AT-CM301 and AT-CM302 Media Converters are members of the Converteon family

of media converter products. They provide a simple and reliable way to connect Fast

Ethernet networks across distances of up to 2 kilometers (1.24 miles) using multimode

fiber optic cable. The products feature a 10/100Base-TX port and a 100Base-FX port.

The two cards support all of the same features, but they have different connectors on the

100Base-FX fiber optic ports. The features are listed here.

(* Requires the AT-CV5M02 Management Card.)

(** Requires an AT-CV5M02 Management Card in the upstream AT-CV5000 Chassis.)

Note

These line cards cannot be managed with the AT-CV5M01 Management Card.

613-001068 Rev. A

Converteon Enclosures

This product is supported in all four Converteon enclosures:

 AT-CV5000 Chassis

 AT-CV1203 Chassis

 AT-CV1200 Chassis

 AT-CV1000 Chassis

Related Documents

For background information on the Converteon product, refer to the Converteon AT-S73,

AT-S99, and AT-S102 Management Software User’s Guide, available from the Allied

Telesis web site.

Verifying the Package Contents

The following items should be in the shipping container:

 One AT-CM301 or AT-CM302 Media Converter

 This Installation Guide

 Warranty card

If any item is missing or damaged, contact your Allied Telesis sales representative for

assistance. You should retain the original shipping material in case you need to return the

unit to Allied Telesis.

Reviewing Safety Precautions

Before installing the media converter, review the safety precautions detailed in the

Converteon chassis’ Installation Guide.

Twisted Pair Cable Specifications

The cable specifications for the 10/100Base-TX twisted pair port are listed here.

Fiber Optic Cable Specifications

Setting the DIP Switches

The line card has DIP switches for setting the operating mode. You can also set the

operating mode with the optional AT-CV5M02 Management Card. To use the DIP

switches, refer to the figure and table. For background information on the operating

modes, refer to the Converteon AT-S73, AT-S99, and AT-S102 Management Software

User’s Guide.

Installing the Media Converter

Note

The media converter supports hot swapping and can be installed while the chassis

is powered on.

To install the media converter:

1. Remove the slot cover from one of the slots in the Converteon chassis by loosening

the captive screw with a Phillips head screwdriver. The unit can be installed in any of

the media converter slots.

Note

Retain the slot cover and reinstall it if you ever remove the card. An open slot allows

dust to enter the unit and reduces proper airflow in the chassis.

2. Align the edges of the line card with the guides in the slot and carefully slide the card

into the chassis until it is flush with the front of the chassis. Light pressure may be

needed to seat the module on the connector on the backplane in the chassis.

3. Secure the line card in the chassis by tightening the captive-screw with a Phillips

head screwdriver.

4. Remove the dust cover from the fiber optic port.

5. Connect the fiber optic cable to the fiber optic port.

6. Connect a twisted pair cable to the RJ-45 twisted pair port on the line card.

10/100Base-TX Twisted Pair

Port

 IEEE 802.3u Auto-Negotiation

 Half- or full-duplex mode

 Auto-MDI/MDI-X

 RJ-45 connector

 IEEE 802.3x flow control at 10 or 100 Mbps

100Base-FX Port Supports distances up to 2 kilometers (1.24 miles) using

50/125 µm or 62.5/125 µm (core/cladding) multimode fiber

optic cable.

Fiber Optic Port Connectors  AT-CM301 - duplex ST

 AT-CM302 - duplex SC

Operating Modes  Link Test

 MissingLink

™

 Smart MissingLink

The operating modes can be activated with or without support

for Operations, Administration, and Maintenance.

Operations, Administration, and

Maintenance (OAM) Features

 Loopback tests*

 Remote Converteon line card management*

 Remote management software downloads*

 Dying gasp**

 Variable requests*

Other Features  Jumbo frames up to 10,240 bytes

 Ingress and egress packet rate limiting*

 Operating mode and port status LEDs

 Low power mode

 Cyclical redundancy check

 Suitable for managed and unmanaged network

environments

 Management available with the AT-CV5M02 Management

Card

 AT-S102 Management Software (preinstalled)

*613-001068 RevA*

Caution

The media converter line card is sensitive to and can be damaged by

electrostatic discharge. Wear a grounding device and observe electrostatic

discharge precautions when installing the card in the chassis.

Speed Cable Type

Maximum Operating

Distance

10 Mbps Standard TIA/EIA 568-B-compliant Category 3 or

better shielded or unshielded cabling with 100 ohm

impedance and a frequency of 16 MHz.

100 m (328 ft)

100 Mbps Standard TIA/EIA 568-A-compliant Category 5 or

TIA/EIA 568-B-compliant Enhanced Category 5

(Cat 5e) shielded or unshielded cabling with 100

ohm impedance and a frequency of 100 MHz.

100 m (328 ft)

Line Card Connector

Maximum

Distance

Fiber Optic Cable

AT-CM301 Duplex ST 2 km (1.24 mi.) 50/125 µm or 62.5/125 µm (core/

cladding) multimode fiber optic cable

AT-CM302 Duplex SC 2 km (1.24 mi.) 50/125 µm or 62.5/125 µm (core/

cladding) multimode fiber optic cable

Operating Mode Switch 4 Switch 3 Switch 2 Switch 1

Link Test (default setting) Off Off Off Off

MissingLink Off Off Off On

Smart MissingLink Off Off On Off

Link Test with OAM Off On Off Off

MissingLink with OAM Off On Off On

Smart MissingLink with OAM Off On On Off

OFF

SW1

1447

432

OFF

SW1

1448

DIP Switch 1

Off

DIP Switch 4

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*613-001068 RevA* 1

Inhaltsverzeichnis

Seite 1 - *613-001068 RevA*

1 2 3AT-CM301 and AT-CM302 Fast EthernetMedia Converters Installation GuideOverviewThe AT-CM301 and AT-CM302 Media Converters are members of the Conve

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4 5 6LEDsThe RDY LED displays general status information.The operating mode of the line card is displayed by the SML, ML and OAM LEDs.The 100Base-FX p

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