Allied Telesis AT-MMC2000-SP, AT-MMC2000-ST, AT-MMC2000-SC, AT-MMC200-ST, AT-MMC2000-LC User Manual

AT-MMC2000/200 Series

Mini Switching Media Converters

 AT-MMC2000/SC

 AT-MMC2000/ST

 AT-MMC2000/LC

 AT-MMC2000/SP

 AT-MMC200/SC

 AT-MMC200/ST

 AT-MMC200/LC

Installation Guide

613-002037 Rev B

Copyright  2016 Allied Telesis, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc.
Allied Telesis and the Allied Telesis logo are trademarks of Allied Telesis, Incorporated. All other product names, company names,
logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesis, Inc. reserves the right to make changes in specifications and other information contained in this document without prior
written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesis, Inc. 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 Telesis, Inc. has been advised of, known, or should have known, the
possibility of such damages.

Electrical Safety and Emissions

Note

Note

Standards

This section contains the following:

 “US Federal Communications Commission”

 “Industry Canada”

 “Emissions, Immunity and Electrical Safety Standards” on page 4

 “Translated Safety Statements” on page 4

US Federal Communications Commission

Radiated Energy

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.

Modifications or changes not expressly approved of by the manufacturer or the FCC, can void
your right to operate this equipment.

Industry Canada

Radiated Energy

This Class A digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

3

Emissions, Immunity and Electrical Safety Standards

Warning

Warning

RFI Emissions FCC Class A, EN55022 Class A, CISPR 22 Class A, VCCI Class A, RCM

In a domestic environment this product may cause radio interference in which case the user
may be required to take adequate measures.  E84

EMC (Immunity) EN55024, EN61000-3-2, EN61000-3-3

Electrical Safety EN60950-1 (TUV), UL 60950-1 (

Laser Safety: EN60825  L7

CULUS

)

Translated Safety Statements

Important: The  indicates that a translation of the safety statement is available in a PDF
document titled Translated Safety Statements on the Allied Telesis website at
www.alliedtelesis.com/support.

4

Contents

Preface............................................................................................................................................................. 11

Symbol Conventions .................................................................................................................................. 12

Contacting Allied Telesis............................................................................................................................ 13

Chapter 1: Overview ..................................................................................................................................... 15

Introduction ................................................................................................................................................ 16

Features..................................................................................................................................................... 17

AT-MMC2000/SC, AT-MMC2000/ST, and AT-MMC2000/LC....................................................... 17

AT-MMC2000/SP .......................................................................................................................... 17

AT-MMC200/SC, AT-MMC200/ST, and AT-MMC200/LC............................................................. 17

Twisted-Pair Port ................................................................................................................................. 18

Fiber Connection ................................................................................................................................. 18

Auto MDI/MDI-X .................................................................................................................................. 18

LEDs.................................................................................................................................................... 19

Smart MissingLink™ (SML) ................................................................................................................. 21

SML Example Scenarios............................................................................................................... 21

SML Example Scenarios with Two Connected Media Converters................................................ 22

Enabling SML................................................................................................................................ 23

External AC/DC Power Adapter .......................................................................................................... 23

Front and Back Panels............................................................................................................................... 24

Twisted-Pair Port........................................................................................................................................ 27

Reset the Media Converter ........................................................................................................................ 28

Chapter 2: Installation ................................................................................................................................... 29

Reviewing Safety Precautions ................................................................................................................... 30

Selecting a Site for the Media Converter ................................................................................................... 32

Planning the Installation ............................................................................................................................. 33

Unpacking the Media Converter................................................................................................................. 36

Installing the Media Converter on a Desktop ............................................................................................. 41

Installing the Media Converter on a Wall ................................................................................................... 42

Installing the SFP Transceiver ................................................................................................................... 45

Powering On and Cabling the Media Converter......................................................................................... 48

Cabling Guidelines .............................................................................................................................. 48

Applying Power and Connecting the Network Cables ......................................................................... 48

Chapter 3: Troubleshooting .......................................................................................................................... 51

Appendix A: Technical Specifications ............................................................................................................ 55

Physical Specifications............................................................................................................................... 55

Environmental Specifications ..................................................................................................................... 55

Power Specifications.................................................................................................................................. 56

Safety and Electromagnetic Emissions Certifications ................................................................................ 56

RJ45 Connector and Port Pinouts.............................................................................................................. 56

Fiber-Optic Port Specifications................................................................................................................... 58

Appendix B: Cleaning Fiber-Optic Connectors .............................................................................................. 59

Introduction ................................................................................................................................................ 59

Using a Cartridge-Type Cleaner ................................................................................................................ 60

5

Contents

Using a Swab .............................................................................................................................................62

6

Figures

Figure 1: PWR and SYS LEDs ............................................................................................................................................ 19

Figure 2: Port LEDs ............................................................................................................................................................. 19

Figure 3: SML in Normal Condition...................................................................................................................................... 21

Figure 4: SML with Fiber Connection Down ........................................................................................................................ 21

Figure 5: SML with Copper Connection Down..................................................................................................................... 22

Figure 6: SML in Normal Condition with Two Media Converters ......................................................................................... 22

Figure 7: SML with Copper Connection to End Node Down................................................................................................ 22

Figure 8: SML with Fiber Connection Between Media Converters Down ............................................................................ 23

Figure 9: AT-MMC2000/200 Series Converter Rear Panel DIP Switches ........................................................................... 23

Figure 10: AT-MMC2000/SC and AT-MMC200/SC Front Panel ......................................................................................... 24

Figure 11: AT-MMC2000/ST and AT-MMC200/ST Front Panel.......................................................................................... 24

Figure 12: AT-MMC2000/LC and AT-MMC200/LC Front Panel.......................................................................................... 25

Figure 13: AT-MMC2000/SP Front Panel............................................................................................................................ 25

Figure 14: Media Converter Back Panel.............................................................................................................................. 26

Figure 15: AT-MMC2000/SC and AT-MMC200/SC Shipping Package Contents ............................................................... 37

Figure 16: AT-MMC2000/ST and AT-MMC200/ST Shipping Package Contents ................................................................ 38

Figure 17: AT-MMC2000/LC and AT-MMC200/LC Shipping Package Contents ............................................................

Figure 18: AT-MMC2000/SP Shipping Package Contents .................................................................................................. 40

Figure 19: Attaching the Brackets to Install the Media Converter on a Wall........................................................................ 42

Figure 20: Marking the Screw Hole Locations..................................................................................................................... 43

Figure 21: Securing the Media Converter to the Wall.......................................................................................................... 44

Figure 22: Removing the Dust Plug from an SFP Slot ........................................................................................................ 45

Figure 23: Inserting the SFP................................................................................................................................................ 46

Figure 24: Positioning the SFP Handle in the Upright Position ........................................................................................... 46

Figure 25: Connecting 12VDC Powered Unit ...................................................................................................................... 48

Figure 26: RJ45 Connector and Port Pin Layout ................................................................................................................. 56

Figure 27: Ferrule in an SC Connector Plug........................................................................................................................ 59

Figure 28: Unclean and Clean Ferrule................................................................................................................................. 60

Figure 29: Cartridge Cleaner ............................................................................................................................................... 60

Figure 30: Rubbing the Ferrule Tip on the Cleaning Surface .............................................................................................. 61

Figure 31: Lint-Free and Alcohol-Free Swabs..................................................................................................................... 62

Figure 32: Cleaning a Recessed Ferrule............................................................................................................................. 63

.... 39

7

List of Figures

8

Tables

Table 1. Media Converter LED Functional Descriptions .....................................................................................................20

Table 2. Twisted-Pair Port Cabling Specifications ..............................................................................................................33

Table 3. Copper Connection Speed/Duplex Settings and Resulting Speed - AT-MMC2000 .............................................34

Table 4. Copper Connection Speed/Duplex Settings and Resulting Speed - AT-MMC200 ...............................................35

Table 5. Physical Specifications .........................................................................................................................................55

Table 6. Environmental Specifications ................................................................................................................................55

Table 7. Power Specifications ............................................................................................................................................56

Table 8. Safety and Electromagnetic Emissions Certifications ...........................................................................................56

Table 9. MDI Pin Signals (10 or 100 Mbps) ........................................................................................................................57

Table 10. MDI-X Pin Signals (10 or 100 Mbps) ..................................................................................................................57

Table 11. Pin Signals (1000 Mbps) .....................................................................................................................................57

Table 12. AT-MMC2000 Fiber-Optic Port Specifications ....................................................................................................58

Table 13. AT-MMC200 Fiber-Optic Port Specifications ......................................................................................................58

9

List of Tables

10

Preface

This preface contains the following sections:

 “Symbol Conventions” on page 12

 “Contacting Allied Telesis” on page 13

This guide contains the installation instructions for the following Mini
Switching Media Converters.

 AT-MMC2000/SC

 AT-MMC2000/ST

 AT-MMC2000/SP

 AT-MMC2000/LC

 AT-MMC200/SC

 AT-MMC200/ST

 AT-MMC200/LC

11

Symbol Conventions

Note

Caution

Warning

Warning

This document uses the following conventions:

Notes provide additional information.

Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.

Warnings inform you that performing or omitting a specific action
may result in bodily injury.

Laser warnings inform you that an eye and skin hazard exists due to
the presence of a Class 1 laser device.

12

Contacting Allied Telesis

If you need assistance with this product, you may contact Allied Telesis
technical support by going to the Support & Services section of the Allied
Telesis web site at www.alliedtelesis.com/support. You can find links for
the following services on this page:

 24/7 Online Support - Enter our interactive support center to

search for answers to your questions in our knowledge database,
check support tickets, learn about Return Merchandise
Authorizations (RMAs), and contact Allied Telesis technical
experts.

 USA and EMEA phone support - Select the phone number that

best fits your location and customer type.

 Hardware warranty information - Learn about Allied Telesis

warranties and register your product online.

 Replacement Services - Submit an RMA request via our interactive

support center.

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

 Documentation - View the most recent installation guides, user

guides, software release notes, white papers and data sheets for
your product.

 Software Updates - Download the latest software releases for your

product.

For sales or corporate contact information, go to www.alliedtelesis.com/
purchase and select your region.

13

14

Chapter 1

Overview

This chapter contains the following sections:

 “Introduction” on page 16

 “Features” on page 17

 “Front and Back Panels” on page 24

 “Twisted-Pair Port” on page 27

 “Reset the Media Converter” on page 28

This chapter describes the following Mini Switching Media Converters:

 AT-MMC2000/SC

 AT-MMC2000/ST

 AT-MMC2000/SP

 AT-MMC2000/LC

 AT-MMC200/SC

 AT-MMC200/ST

 AT-MMC200/LC

15

Chapter 1: Overview

Introduction

The AT-MMC2000/200 Series Mini Switching Media Converters include
the following models:

 AT-MMC2000/SC

 AT-MMC2000/ST

 AT-MMC2000/SP

 AT-MMC2000/LC

 AT-MMC200/SC

 AT-MMC200/ST

 AT-MMC200/LC

The AT-MMC2000/200 Series Mini Switching Media Converters are
designed to extend the distance of your network by interconnecting LAN
devices that are physically separated by large distances.

These media converters:

 Provide a smaller-sized space-saving alternative that allows

enterprises to connect copper networks to fiber networks, offering
a cost-effective method for integrating fiber-optic cabling into a 10/
100/1000 or 10/100 UTP environment:

– The AT-MMC2000/SC, AT-MMC2000/ST, and

AT-MMC2000/LC connect 10/100/1000Mbps
copper networks to 1000Mbps fiber networks.

– The AT-MMC2000/SP connects 10/100/1000Mbps

copper networks to 100/1000Mbps fiber networks.

– The AT-MMC200/SC, AT-MMC200/ST, and

AT-MMC200/LC connect 10/100Mbps copper
networks to 100Mbps fiber networks.

 Operate at 1000Mbps full duplex (AT-MMC2000/SC,

AT-MMC2000/ST, and AT-MMC2000/LC), 100/1000 Mbps full
duplex (AT-MMC2000/SP, depending on the SFP type), or
100Mbps full duplex (AT-MMC200/SC, AT-MMC200/ST, and
AT-MMC200/LC).

 Can be installed on a desktop or can be wall mounted: easy to

install and do not require any software configuration or
management.

 Optional Speed/Duplex and Smart MissingLink™ (SML) settings

may be configured using DIP switches.

16

 12VDC locking power connector.

Features

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Here are the key features of the AT-MMC2000/200 Series converters:

AT-MMC2000/SC, AT-MMC2000/ST, and AT-MMC2000/LC

 1000Base-SX fiber-optic port

 Auto Negotiation or fixed 100Mpbs full duplex and Auto MDI/MDI-X

on 10/100/1000 twisted-pair port. The 10/100/1000 twisted-pair
port will auto-negotiate to match the existing copper infrastructure
or can be forced to 100Mpbs full-duplex operation.

 Support for Jumbo frames up to 10kB

 LEDs for unit and port status

 SML DIP switch for activating the SML feature which notifies end

nodes of connection failures

 12 VDC external wall-mount AC power adapter

AT-MMC2000/SP

 SFP port supporting 1000-SF/LX and 100-FX/LX SFP modules

 Auto Negotiation or fixed 100Mpbs full duplex and Auto MDI/MDI-X

on 10/100/1000 twisted-pair port. The 10/100/1000 twisted-pair
port will auto-negotiate to match the existing copper infrastructure
or can be forced to 100Mpbs full-duplex operation.

 Support for Jumbo frames up to 10kB

 LEDs for unit and port status

 SML DIP switch for activating the SML feature which notifies end

nodes of connection failures

 12 VDC external wall-mount AC power adapter

AT-MMC200/SC, AT-MMC200/ST, and AT-MMC200/LC

 100Base-FX fiber-optic port

 Auto Negotiation or fixed 100Mpbs full duplex and Auto MDI/MDI-X

on 10/100 twisted-pair port. The 10/100 twisted-pair port will auto­negotiate to match the existing copper infrastructure or can be
forced to 100Mpbs full-duplex operation.

 Support for Jumbo frames up to 10kB

 LEDs for unit and port status

 SML DIP switch for activating the SML feature which notifies end

nodes of connection failures

 12 VDC external wall-mount AC power adapter

17

Chapter 1: Overview

Note

Twisted-Pair Port Here are the basic features of the twisted-pair (copper) port:

 10/100/1000 Mbps (AT-MMC2000/SC, AT-MMC2000/ST,

AT-MMC2000/LC, AT-MMC2000/SP) or 10/100 Mbps
(AT-MMC200/SC, AT-MMC200/ST, AT-MMC200/LC)

 10/100/1000Base-T compliant (AT-MMC2000/SC, AT-MMC2000/

ST, AT-MMC2000/LC, AT-MMC2000/SP) or 10/100Base-T
compliant (AT-MMC200/SC, AT-MMC200/ST, AT-MMC200/LC)

 IEEE 802.3u Auto-Negotiation compliant

 Auto MDI/MDI-X

 100 meters (328 feet) maximum operating distance

 RJ45 connector

Fiber Connection The AT-MMC2000/200 Series converters support the following transceiver

fiber connections:

 The AT-MMC2000/SC has a fixed dual fiber SC 1000-X

connection.

Auto MDI/

MDI-X

 The AT-MMC2000/ST has a fixed dual fiber ST 1000-X

connection.

 The AT-MMC2000/LC has a fixed dual fiber LC 1000-X

connection.

 The AT-MMC200/SC has a fixed dual fiber SC 100-X connection.

 The AT-MMC200/ST has a fixed dual fiber ST 100-X connection.

 The AT-MMC200/LC has a fixed dual fiber LC 100-X connection.

For the maximum operating distance, refer to Table 12 on page 58.

 The AT-MMC2000/SP has a plug-in SFP cage fiber connection.

1000-X and 100-FX modules are supported.

For the AT-MMC2000/SP, you must purchase the SFP transceiver
separately. For a list of supported transceivers, contact your Allied
Telesis distributor or reseller.

An RJ45 twisted-pair port on a 100 Mbps Ethernet network device can
have one of two possible wiring configurations: MDI or MDI-X. The RJ45
port on a PC, router, or bridge is typically wired as MDI, while the twisted­pair port on a switch or hub is usually MDI-X.

The media converter features Auto MDI/MDI-X. The twisted-pair port
automatically determines the configuration of the port on the device to
which it is connected and then configures itself appropriately.

For example, if a port on a media converter is connected to a port on a
bridge, which is typically wired as MDI, the port on the media converter
automatically configures itself as MDI-X.

18

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

PWR

SYS

FIBER

P2

L/A

COPPER

P1

L/A

This feature allows you to use a straight-through cable when connecting
any type of device to the media converter, regardless of the wiring
configuration of the port on the device.

LEDs Figure 1 shows the PWR and SYS LEDs.

Figure 1. PWR and SYS LEDs

Figure 2 shows the port LEDs.

Figure 2. Port LEDs

Table 1 on page 20 describes the media converter’s LEDs.

19

Chapter 1: Overview

Table 1. Media Converter LED Functional Descriptions

LED State Description

Off The media converter is not receiving power.

PWR

SYS

COPPER

P1 L/A

(L = Link;

A = Activity)

Steady

The media converter is receiving power.

Green

Off The media converter is not operational and

will not pass traffic.

Solid

The media converter is operational.

Green

(with

Heartbeat)

Note: The SYS LED will flicker briefly at a
regular interval. This “heartbeat” indicates
that the internal system is running normally.

Slow

An error is present on the media converter.

Blinking

Green

Off The port has not established a link.

Steady

Green

The port has an established link to a network
device, but it is not transmitting or receiving
network packets.

Rapid

Blinking

The port is transmitting or receiving network
packets.

Green

20

FIBER P2

L/A

(L = Link;

A = Activity)

Slow

Blinking

SML is on and detects a failure on the fiber
port.

Green

Off The port has not established a link.

Steady

Green

The port has an established link to a network
device, but it is not transmitting or receiving
network packets.

Rapid

Blinking

The port is transmitting or receiving network
packets.

Green

Slow

Blinking

Green

SML is on and detects a failure on the copper
port or the remote fiber port when operating
in a back-to-back configuration with another
AT-MMC2000/200 Series media converter.

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

AT-MMC2000/200

Copper L/A Fiber L/A

End Node

Copper Cable Fiber Cable

Link LED On

End Node

Link LED On

LED On LED On

AT-MMC2000/200

Copper L/A Fiber L/A

End Node

Copper Cable Fiber Cable

Link LED Off

End Node

Link LED Off

LED Blinking LED Off

Smart

MissingLink™

(SML)

If one of the Ethernet connections to the media converter loses link, the
Smart MissingLink™ (SML) feature allows you to determine which port still
has a valid connection and which port requires troubleshooting. The value
to this type of network monitoring and fault notification is that you can
quickly determine which media converter port has failed and troubleshoot
the specific area where the problem is occurring.

When the media converter detects a loss of connection on one of the
ports, the port’s L/A LED is turned off. At the same time, the media
converter causes the opposite port’s L/A LED to blink while simultaneously
turning OFF that port’s Ethernet connection to its end node. This occurs
even though the properly operating port had a valid connection before the
failure occurred: The reason for this is so that its end node is notified that
the data path has been compromised, and immediate action is required.

For example, if the network connection to the media converter’s twisted­pair port fails (as shown in Figure 5 on page 22), the FIBER P2 L/A LED
blinks slowly while the fiber port’s link is turned OFF. The COPPER P2 L/A
LED is turned OFF, indicating a failed connection on the twisted-pair port.

If the failure had started with the fiber-optic cabling (as shown in Figure 4),
then the COPPER P2 L/A LED would blink slowly, and the FIBER P2 L/A
LED would turn OFF.

SML Example Scenarios

Following are example scenarios with one SML enabled media converter
connected between two end nodes.

Figure 3 shows media converter and end node L/A LED behavior with
SML enabled under normal conditions.

Figure 3. SML in Normal Condition

Figure 4 shows media converter and end node L/A LED behavior with
SML enabled with a fiber connection down.

Figure 4. SML with Fiber Connection Down

21

Chapter 1: Overview

AT-MMC2000/200

Copper L/A Fiber L/A

End Node

Copper Cable Fiber Cable

Link LED Off

End Node

Link LED Blinking

LED Off LED Blinking

AT-MMC2000/200

Fiber Cable

End Node

Link LED On

End Node

Link LED On

AT-MMC2000/200

Copper L/A Fiber L/A

LED On LED On

Fiber L/A

LED On

Copper L/A

LED On

Copper Cable Copper Cable

AT-MMC2000/200

End Node

Link LED Off

End Node

Link LED Off

AT-MMC2000/200

Copper L/A Fiber L/A

LED Off LED Blinking

Fiber L/A

LED Blinking

Copper L/A

LED Blinking

Fiber CableCopper Cable Copper Cable

Figure 5 shows media converter and end node L/A LED behavior with
SML enabled with a copper connection down.

Figure 5. SML with Copper Connection Down

SML Example Scenarios with Two Connected Media Converters

Following are example scenarios with two SML enabled media converters
connected back-to-back (bookend mode).

Figure 6 shows media converter and end node L/A LED behavior with
SML enabled under normal conditions.

22

Figure 6. SML in Normal Condition with Two Media Converters

Figure 7 shows media converter and end node L/A LED behavior with
SML enabled with a copper connection down between a media converter
and an end node.

Figure 7. SML with Copper Connection to End Node Down

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Note

AT-MMC2000/200

End Node

Link LED Off

End Node

Link LED Off

AT-MMC2000/200

Copper L/A Fiber L/A

LED Blinking LED Off

Fiber L/A

LED Off

Copper L/A

LED Blinking

Fiber CableCopper Cable Copper Cable

PORT 1

SML ON/OFF

(In Auto Negotiation position)

Figure 8 shows media converter and end node L/A LED behavior with
SML enabled with a fiber connection down between two media converters.

Figure 8. SML with Fiber Connection Between Media Converters Down

Enabling SML

To enable SML on the unit, set the SML ON/OFF DIP switch on the rear
panel of the unit to the ON (up) position. See Figure 9.

External AC/DC

Power Adapter

Figure 9. AT-MMC2000/200 Series Converter Rear Panel DIP Switches

An external AC/DC power adapter is included with the media converter for
standalone operation. The power adapter supplies 12 VDC to the media
converter. Allied Telesis supplies a UL approved safety compliant AC
power adapter for the 120 and 240 VAC versions with a regulated output
of 12 VDC. The power required for the media converter is 12 VDC, 200
mA.

The media converter power receptacle has a twist-and-lock barrel
which is locked by turning the power cord clockwise one-quarter
turn.

23

Chapter 1: Overview

Base-T

Twisted-Pair Port

Fiber SC TX & RX

Ports

Base-T

Twisted-Pair Port

L/A LED

Fiber Port

L/A LED

Fiber ST TX & RX

Ports

Fiber Port

L/A LED

Base-T

Twisted-Pair Port

Base-T

Twisted-Pair Port

L/A LED

Front and Back Panels

Figure 10 illustrates the front panel of the AT-MMC2000/SC and
AT-MMC200/SC Media Converters.

Figure 10. AT-MMC2000/SC and AT-MMC200/SC Front Panel

Figure 11 illustrates the front panel of the AT-MMC2000/ST and
AT-MMC200/ST Media Converters.

Figure 11. AT-MMC2000/ST and AT-MMC200/ST Front Panel

24

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Base-T

Twisted-Pair Port

Fiber LC TX & RX

Ports

Base-T

Twisted-Pair Port

L/A LED

Fiber Port

L/A LED

Fiber SP SFP

Slot

10/100/1000Base-T
Twisted-Pair Port

10/100/1000Base-T
Twisted-Pair Port

L/A LED

Fiber Port

L/A LED

Figure 12 illustrates the front panel of the AT-MMC2000/LC and
AT-MMC200/LC Media Converters.

Figure 12. AT-MMC2000/LC and AT-MMC200/LC Front Panel

Figure 13 illustrates the front panel of the AT-MMC2000/SP Media
Converter.

Figure 13. AT-MMC2000/SP Front Panel

25

Chapter 1: Overview

12 VDC Input

SYS LED

PWR LED

SML ON/OFF

DIP Switch

100Mbps Full Duplex/

Auto Negotiation

DIP Switch

Figure 14 illustrates the media converter back panel.

Figure 14. Media Converter Back Panel

26

Twisted-Pair Port

Note

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

The twisted-pair port features an eight-pin RJ45 connector that uses four
pins at 10 or 100 Mbps and all eight pins at 1000 Mbps. For the port
pinouts, see “RJ45 Connector and Port Pinouts” on page 56.

The port has a maximum operating distance of 100 meters (328 feet). For
twisted-pair port cabling specifications, refer to Table 2 on page 33.

You can set the twisted-pair port to 100 Mbps full-duplex mode or Auto­Negotiation mode using the PORT 1 (right) DIP switch of the two DIP
switches on the rear panel. See Figure 9 on page 23.

 When this DIP switch is in the FORCE 100 F/D (up) position, the

twisted-pair port is forced to 100 Mbps full-duplex mode, and Auto
Negotiation is disabled.

 When in the AUTO NEG (down) position, the twisted-pair port

operates in Auto-Negotiation mode.

100 Mbps full-duplex mode should not be used unless absolutely
necessary because forcing 100 Mbps full-duplex in most
applications is likely to cause a duplex mismatch, in turn, causing
poor network performance. 100 Mbps full-duplex mode should only
be used when the link partner is already forced to 100 Mbps full­duplex operation, and Auto Negotiation is disabled on the link
partner. In this specific case, using Auto Negotiation on the media
converter would result in a duplex mismatch.

27

Chapter 1: Overview

Reset the Media Converter

Reset the media converter by powering OFF then powering ON the unit.

28

Chapter 2

Installation

This chapter contains the following sections:

 “Reviewing Safety Precautions” on page 30

 “Selecting a Site for the Media Converter” on page 32

 “Planning the Installation” on page 33

 “Unpacking the Media Converter” on page 36

 “Installing the Media Converter on a Desktop” on page 41

 “Installing the Media Converter on a Wall” on page 42

 “Installing the SFP Transceiver” on page 45

 “Powering On and Cabling the Media Converter” on page 48

29

Chapter 2: Installation

Note

Caution

Note

Note

Warning

Caution

Reviewing Safety Precautions

Review the following safety precautions before you begin to install the
chassis or any of its components.

The  indicates that a translation of the safety statement is
available in a PDF document titled Translated Safety Statements on
the Allied Telesis website at www.alliedtelesis.com/support.

Air vents must not be blocked and must have free access to the
room ambient air for cooling.  E6

All Countries: Install product in accordance with local and National
Electrical Codes.  E8

The power input must be provided from SELV source only, per
IEC60950. Do not connect to a centralized DC battery bank.  E31

Operating Temperature. This product is designed for a maximum
ambient temperature of 50° degrees C.  E57

Failing to pick up the ferrule tip when you reach the bottom of the
cleaning surface can result in static electricity that can damage the
fiber-optic cable.  E82

30

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Warning

Warning

Caution

Warning

Warning

Warning

In a domestic environment this product may cause radio interference
in which case the user may be required to take adequate measures.

 E84

An SFP transceiver can be damaged by static electricity. Be sure to
observe all standard electrostatic discharge (ESD) precautions,
such as wearing an antistatic wrist strap, to avoid damaging the
transceiver.  E86

Only use the power adapter supplied with the device.  E102

Do not stare into the laser beam.  L2

Do not look directly at the fiber-optic cable ends or inspect the cable
ends with an optical lens.  L6

Laser Safety: EN60825-1.  L7

31

Chapter 2: Installation

Selecting a Site for the Media Converter

Observe the following requirements when choosing a site for your media
converter:

 If you are installing the media converter on a table, verify that the

table is level and secure.

 The power outlet for the media converter should be located near

the unit and should be easily accessible.

 The site should provide for easy access to the ports on the front of

the media converter. This will make it easier for you to connect and
disconnect cables, as well as view the media converter’s LEDs.

 Air flow around the unit and through its vents on the side should

not be restricted so that the media converter can maintain
adequate cooling.

 Do not place objects on top of the media converter.

 Do not expose the media converter to moisture or water.

 You should use dedicated power circuits or power conditioners to

supply reliable electrical power to the network devices.

32

Planning the Installation

Be sure to observe the following guidelines when planning the installation
of your media converter.

 On the AT-MMC2000 media converters, the end node connected

 On the AT-MMC200 media converters, the end node connected to

 The two end-nodes connected to the ports of the media converter

 The devices connected to the two ports on the media converter can

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

to the fiber connector on the media converter must operate at 1000
Mbps, except for the AT-MMC2000/SP when using a 100 Mbps
SFP module.

the fiber connector on the media converter must operate at 100
Mbps.

must operate with the same duplex mode, either half- or full­duplex. The twisted-pair port on the media converter can operate in
either mode with Auto Negotiation enabled.

be a network adapter card, repeater, switch, media converter, or
router.

 The twisted-pair port has a maximum operating distance of 100

meters (328 feet).

Table 2 contains the cable specifications for the twisted-pair port.

Table 2. Twisted-Pair Port Cabling Specifications

Speed Type of Cable

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 Mbps Standard TIA/EIA 568-A-compliant

Category 5 or TIA/EIA 568-B­compliant Enhanced Category 5
(Cat 5e) shielded or unshielded
cabling with 100 ohm impedance
and a frequency of 100 MHz.

1000 Mbps Standard TIA/EIA 568-A-compliant

Category 5 or TIA/EIA 568-B­compliant Enhanced Category 5
(Cat 5e) shielded or unshielded
cabling with 100 ohm impedance
and a frequency of 100 MHz.

33

Chapter 2: Installation

Table 3. Copper Connection Speed/Duplex Settings and Resulting Speed - AT-MMC2000

AT-MMC2000

Copper Port

Speed/Duplex

Setting

For speed/duplex interactions between the copper port on the
AT-MMC2000 and the copper link partner, refer to Table 3 for allowable
speed/duplex combinations.

Copper Link Partner Port Setting

Auto Negotiation 100Mbps Force

Full Duplex

100Mbps Force
Half Duplex

1000Mbps
Force Full
Duplex*

Auto Negotiation 1000Mbps full

duplex
connection for

Duplex
mismatch – not
supported

100Mbps half
duplex
connection

1000Mbps full
duplex

connection
Gigabit Link
Partners

100Mbps full
duplex
connection for
100Mbps Link
Partners

100Mbps Full

Duplex

Duplex
mismatch – not
supported

100Mbps full
duplex
connection

Duplex
mismatch – not
supported

No connection

*Although 1000Mbps connections require Auto Negotiation, some switches allow the option of
only advertising 1000Mbps speed.

Note: The fiber port always runs at 1000Mbps full duplex.

34

For speed/duplex interactions between the copper port on the
AT-MMC200 and the copper link partner, refer to Table 4 on page 35 for
allowable speed/duplex combinations.

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Note

Table 4. Copper Connection Speed/Duplex Settings and Resulting Speed - AT-MMC200

AT-MMC200

Copper Port

Speed/Duplex

Copper Link Partner Port Setting

Setting

Auto Negotiation 100Mbps Force

Full Duplex

100Mbps Force
Half Duplex

1000Mbps
Force Full
Duplex*

Auto Negotiation 100Mbps full

duplex
connection

100Mbps Full

Duplex

Duplex
mismatch – not
supported

Duplex
mismatch – not
supported

100Mbps full
duplex
connection

100Mbps half
duplex
connection

Duplex
mismatch – not
supported

No connection

No connection

*Although 1000Mbps connections require Auto Negotiation, some switches allow the option of
only advertising 1000Mbps speed.

Note: The fiber port always runs at 100Mbps full duplex.

The twisted-pair port on the media converter features Auto MDI/
MDI-X when operating at 10, 100, or 1000 Mbps. The port is
configured as MDI or MDI-X when it is connected to an end node.
Consequently, you can use a straight-through twisted-pair cable
when connecting any type of network device to the twisted-pair port
on the media converter.

For the fiber-optic port specifications, refer to “Fiber-Optic Port
Specifications” on page 58.

35

Chapter 2: Installation

Note

Unpacking the Media Converter

To unpack the media converter, perform the following procedure:

1. Remove all of the components from the shipping package.

Store the packaging material in a safe location. You must use the
original shipping material if you need to return the unit to Allied
Telesis.

2. Place the media converter on a level, secure surface.

3. In addition to the media converter, verify that the shipping container
includes the following items as follows:

 Figure 15 on page 37 shows shipping container items for the

AT-MMC2000/SC and AT-MMC200/SC.

 Figure 16 on page 38 shows shipping container items for the

AT-MMC2000/ST and AT-MMC200/ST.

 Figure 17 on page 39 shows shipping container items for the

AT-MMC2000/LC and AT-MMC200/LC.

 Figure 18 on page 40 shows shipping container items for the

AT-MMC2000/SP.

36

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Two wall brackets

Four bracket screws

One power adapter

One fiber port
dust cover (pre­installed).

(not provided - sold
separately)

(sold separately ­included with
wall brackets)

Four anchors
(sold separately ­included with
wall brackets)

Figure 15. AT-MMC2000/SC and AT-MMC200/SC Shipping Package

Contents

37

Chapter 2: Installation

One power adapter

Two fiber port
dust covers (pre­installed).

Two wall brackets
(not provided - sold
separately)

Four bracket screws
(sold separately ­included with
wall brackets)

Four anchors
(sold separately ­included with
wall brackets)

Figure 16. AT-MMC2000/ST and AT-MMC200/ST Shipping Package

Contents

38

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

One power adapter

One fiber port
dust cover (pre­installed).

Two wall brackets
(not provided - sold
separately)

Four bracket screws
(sold separately ­included with
wall brackets)

Four anchors
(sold separately ­included with
wall brackets)

Figure 17. AT-MMC2000/LC and AT-MMC200/LC Shipping Package

Contents

39

Chapter 2: Installation

One power adapter

One SFP slot
dust cover (pre­installed).

Two wall brackets
(not provided - sold
separately)

Four bracket screws
(sold separately ­included with
wall brackets)

Four anchors
(sold separately ­included with
wall brackets)

Figure 18. AT-MMC2000/SP Shipping Package Contents

40

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Installing the Media Converter on a Desktop

You may install the media converter on a desktop or on a wall. To install
the media converter on a wall, see “Installing the Media Converter on a
Wall” on page 42.

To install the media converter on a desktop, perform the following
procedure:

1. Place the media converter on a flat, secure surface (such as a desk or
table), leaving ample space around the unit for ventilation.

2. Depending on the model, do one of the following:

 For the AT-MMC2000/SP, go to “Installing the SFP Transceiver” on

page 45.

 For all other models, go to “Powering On and Cabling the Media

Converter” on page 48.

41

Chapter 2: Installation

Installing the Media Converter on a Wall

To install the media converter on a wall, perform the following procedure:

1. Place the media converter on a table.

2. Orient the brackets (separately-purchased) against the sides of the
media converter, as shown in Figure 19, and secure them to the unit
with the four brackets screws included with the brackets.

Figure 19. Attaching the Brackets to Install the Media Converter on a Wall

3. Use a pencil or pen to mark the wall with the locations of the four holes
in the brackets. The media converter should be oriented as shown in
Figure 20 on page 43.

42

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Mark locations Mark locations

Figure 20. Marking the Screw Hole Locations

4. Install four plastic anchors (included with separately purchased
brackets) into the wall, at the locations marked in the previous step.

5. Secure the media converter to the wall using four wall mounting
screws (not provided). See Figure 21 on page 44.

43

Chapter 2: Installation

44

Figure 21. Securing the Media Converter to the Wall

6. Depending on the model, do one of the following:

 For the AT-MMC2000/SP, go to “Installing the SFP Transceiver”

on page 45.

 For all other models, go to “Powering On and Cabling the Media

Converter” on page 48.

Installing the SFP Transceiver

Note

Note

Warning

To install an SFP transceiver, perform the following procedure:

The transceiver can be hot-swapped; you do not need to power off
the media converter to install a transceiver. However, always
remove the cable before removing the transceiver.

You should always install the transceiver before connecting the
fiber-optic cable to it.

1. Remove the transceiver from its shipping container and store the
packaging material in a safe location.

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

An SFP transceiver can be damaged by static electricity. Be sure to
observe all standard electrostatic discharge (ESD) precautions,
such as wearing an antistatic wrist strap, to avoid damaging the
transceiver.  E86

2. Remove the dust plug from the SFP slot. See Figure 22.

Figure 22. Removing the Dust Plug from an SFP Slot

3. Position the SFP transceiver with the label facing up.

45

Chapter 2: Installation

Note

Note

SFP Transceiver

Handle

4. Slide the transceiver into the SFP slot until it clicks into place. See
Figure 23.

Figure 23. Inserting the SFP

5. Verify that the handle on the transceiver is in the upright position, as
shown in Figure 24. This secures the transceiver and prevents it from
being dislodged from the slot.

46

Figure 24. Positioning the SFP Handle in the Upright Position

SFP transceivers are dust-sensitive. Always keep the plug in the
optical bores when a fiber-optic cable is not installed, or when
storing the SFP. When you do remove the plug, keep it for future
use.

Unnecessary removal and insertion of an SFP can lead to
premature failure.

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

For information on the cable specifications of the SFP, consult the
documentation shipped with the SFP.

6. Go to “Powering On and Cabling the Media Converter” on page 48.

47

Chapter 2: Installation

Powering On and Cabling the Media Converter

Cabling

Guidelines

Applying Power

and Connecting

the Network

Cables

Observe the following guidelines when connecting twisted-pair and fiber­optic cables to the ports on the media converter:

 The connector on the cable should fit snugly into the port on the

media converter. The tab on the connector should lock the
connector into place.

 Because the twisted-pair port has Auto MDI/MDI-X, you may use

straight-through twisted-pair cable to connect any type of network
device to that port.

 For the fiber optic cables, refer to the cable manufacturer

specification for the minimum bend radius.

To apply power to the media converter and connect the network cables,
perform the following steps:

1. Plug the DC of the external power adapter to the power receptacle
connector labeled 12VDC on the back panel of the media converter
and turn the cord clockwise one-quarter turn to lock, as shown in
Figure 25.

48

Figure 25. Connecting 12VDC Powered Unit

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

2. Plug the power adapter to a power outlet. Refer to “Power
Specifications” on page 56 for power requirements.

3. Verify that the PWR LED is lit green. If the PWR LED is off, refer to
“Troubleshooting” on page 51.

4. Verify that the SYS LED is lit green. If the SYS LED is off, refer to
“Troubleshooting” on page 51.

5. Remove the dust cover from the fiber-optic connector and connect the
cable to the fiber-optic port.

On media converters other than the AT-MMC2000/SP: Verify that the
media converter’s transmitter port (TX) is connected to the end node’s
receiver port (RX) and that the media converter’s receiver port (RX) is
connected to the end node’s transmitter port (TX).

For example, on the AT-MMC2000/ST media converter, connect the
red TX connector on the fiber-optic cable to the transmitter port on the
AT-MMC2000/ST media converter and connect the other connector to
the receiver port on the end node. Then connect the black RX
connector on the fiber-optic cable to the receiver port on the
AT-MMC2000/ST media converter and connect the other connector to
the transmitter port on the end node.

6. Connect the twisted-pair cable to the twisted-pair port. For speed/
duplex interactions between the copper port and the copper link
partner, refer to Table 3 on page 34 for allowable speed/duplex
combinations.

7. Power on the end nodes.

The media converter is now ready for use.

49

Chapter 2: Installation

50

Chapter 3

Note

Troubleshooting

This chapter contains information on how to troubleshoot the media
converter if a problem occurs.

For further assistance, please contact Allied Telesis Technical
Support at www.alliedtelesis.com/support.

Problem 1: The POWER LED on the media converter is off.

Solutions: The unit is not receiving power. Try the following:

 Verify that the power cord is securely connected to the power

source and to the DC connector on the back panel of the media
converter.

 Verify that the power outlet has power by connecting another

device to it.

 Try using another power adapter of the same type that came with

your media converter.

 Verify that the voltage from the power source is within the required

levels for your region.

Problem 2: The SYS LED on the media converter is off.

Solution: An internal component on the unit is damaged or not working

properly. Try power cycling the unit. If power cycling does not clear the
fault, return the unit to Allied Telesis.

Problem 3: The SYS LED on the media converter is blinking slowly.

Solutions: An error is present on the unit. Try power cycling the unit.

If an AT-MMC2000/SP unit, a transmit fault may be occurring on the SFP
module. The media converter will try to clear this error, but if the error
persists, try the following:

 Remove and re-seat the SFP module.

 Try a different SFP module.

 Verify the SFP module is the correct type for your application.

Problem 4: The twisted-pair port on the media converter is connected to
an end node, but the port’s COPPER P1 L/A LED is off.

51

Chapter 3: Troubleshooting

Note

Solutions: The port is unable to establish a link to an end node. Try the

following:

 Verify that the end node connected to the twisted-pair port is

powered on and is operating properly.

 Verify that the twisted-pair cable is securely connected to the port

on the media converter channel and to the port on the remote end­node.

 Verify that the port is connected to the correct twisted-pair cable.

This is to eliminate the possibility that the port is connected to the
wrong end-node, such as a powered-off device.

 Try connecting another end node to the twisted-pair port with a

different cable. If the twisted-pair port is able to establish a link,
then the problem is with the cable or the other end-node.

 Verify that the twisted-pair cable does not exceed 100 meters (328

feet).

 Verify that the end node connected to the media converter is

operating at the same speed.

 Verify that you are using the appropriate category of twisted-pair

cable: Category 3 or better for 10 Mbps operation and Category 5
and Category 5E for 100 and 1000 Mbps operation.

A 1000Base connection may require 5 to 10 seconds to establish a
link.

Problem 5: The FIBER P2 L/A LED for the fiber-optic port is off.

Solutions: The fiber-optic port on the transceiver is unable to establish a

link to an end node. Try the following:

 Verify that the end node connected to the fiber-optic port is

operating properly.

 Verify that the fiber-optic cable is securely connected to the port on

the media converter channel and to the port on the remote end­node.

 Verify that the end node connected to the media converter is

operating at the same speed.

 On media converters other than the AT-MMC2000/SP: Verify that

the media converter’s transmitter port (TX) is connected to the end
node’s receiver port (RX) and that the media converter’s receiver
port (RX) is connected to the end node’s transmitter port (TX).

 On the AT-MMC2000/SP, check that the SFP module is fully

inserted in the slot.

52

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

 On the AT-MMC2000/SP, verify that the operating specifications

and wave lengths of the fiber-optic port on the SFP transceiver and
the remote end-node are compatible.

 Verify that the correct type of fiber-optic cabling is being used.

 Verify that the wavelength between the media converter and end

node matches, and the media converter fiber port is connected to a
multi-mode (not single-mode) port on the end node.

 Verify that the port is connected to the correct fiber-optic cable.

This is to eliminate the possibility that the port is connected to the
wrong remote end-node, such as a powered-off device.

 Try connecting another end node to the fiber-optic port using a

different cable. If the port is able to establish a link, then the
problem is with the cable or with the other end node.

 If the remote end-node is a management device, use its

management firmware to determine whether its port is enabled.

 Test the attenuation on the fiber-optic cable with a fiber-optic tester

to determine whether the optical signal is too weak (sensitivity) or
too strong (maximum input power).

Problem 6: Network performance between the twisted-pair port on the
media converter and an end node is slow.

Solution: There might be a duplex mode mismatch between the port and
the end node. This occurs when a twisted-pair port using Auto Negotiation
is connected to a device with a fixed duplex mode of full duplex. If this is
the cause of the problem, adjust the duplex mode of the port on the end
node or on the media converter so that both ports are using the same
duplex mode.

53

Chapter 3: Troubleshooting

54

Appendix A

Technical Specifications

Below are the technical specifications for the media converters. The
specification categories are as follows:

 “Physical Specifications”

 “Environmental Specifications”

 “Power Specifications” on page 56

 “Safety and Electromagnetic Emissions Certifications” on page 56

 “RJ45 Connector and Port Pinouts” on page 56

 “Fiber-Optic Port Specifications” on page 58

Physical Specifications

Table 5. Physical Specifications

Dimensions
W x D x H

Weight 0.2 kg (0.4 lb)

Environmental Specifications

Operating Temperature 0° C to 50° C (32° F to 122° F)

Storage Temperature -15° C to 65° C (-5° F to 149° F)

Operating Humidity 5% to 90% non-condensing

Storage Humidity 5% to 95% non-condensing

Operating Altitude Range Up to 3,000 m (9,843 ft)

50.8 mm x 99.1 mm x 20.3 mm
(2.0 in x 3.9 in x 0.8 in)

Table 6. Environmental Specifications

55

Appendix A: Technical Specifications

Power Specifications

The following specifications apply to the DC power connector on the
media converter.

Table 7. Power Specifications

Input supply voltage 12 VDC

Input current 1.0 A

Safety and Electromagnetic Emissions Certifications

Table 8. Safety and Electromagnetic Emissions Certifications

Safety

Emissions (EMI)

Immunity

Environmental Compliance

RJ45 Connector and Port Pinouts

Figure 26 illustrates the pin layout for the RJ45 connector and port.

UL60950-1, EN60950-1,
EN60825-1

FCC Class A, CISPR 22 Class A,
EN55022 Class A, RCM,
VCCI Class A

EN55024, EN61000-3-2,
EN61000-3-3

EU-RoHS compliant, WEEE
China RoHS compliant

56

Figure 26. RJ45 Connector and Port Pin Layout

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Table 9 lists the pin signals when a port is operating in the MDI
configuration at 10 or 100 Mbps.

Table 9. MDI Pin Signals (10 or 100 Mbps)

Pin Signal

1TX+

2TX-

3RX+

6RX-

Table 10 lists the pin signals when a port is operating in the MDI-X
configuration at 10 or 100 Mbps.

Table 10. MDI-X Pin Signals (10 or 100 Mbps)

Pin Signal

1RX+

2RX-

3TX+

6TX-

Table 11 lists the pin signals when a port is operating at 1000 Mbps.

Table 11. Pin Signals (1000 Mbps)

Pin Pair Signal

1 1 TX and RX+

2 1 TX and RX-

3 2 TX and RX+

4 3 TX and RX+

5 3 TX and RX-

6 2 TX and RX-

7 4 TX and RX+

8 4 TX and RX-

57

Appendix A: Technical Specifications

Note

Fiber-Optic Port Specifications

The fiber type for the media converter is multimode.

Table 12 lists fiber-optic port specifications for the AT-MMC2000 media
converters.

Fiber optic port specifications for the AT-MMC2000/SP are
dependent upon the type of SFP inserted.

Table 12. AT-MMC2000 Fiber-Optic Port Specifications

Fiber

Optic

Diameter

(microns)

Optical

Wavelength

Launch Power

(dBm)

1

Receive Power (dBm)

Min. Max. Min. Typical Saturation

50/125 850 nm -9.5 -4 -17 -20 -3

62.5/125 850 nm -9 -4 -17 -20 -3

1. The launch power is measured 1 meter (3.28 feet) from the transmitter.

Table 13 lists fiber-optic port specifications for the AT-MMC200 media
converters.

Table 13. AT-MMC200 Fiber-Optic Port Specifications

Fiber

Optic

Diameter

(microns)

Optical

Wavelength

Launch Power

(dBm)

1

Receive Power (dBm)

Min. Max. Min. Typical Saturation

Max.

Distance

500 m

(1,640 ft)

220 m

(722 ft)

Max.

Distance

50/125 1310 nm -19 -14 -32 -34 -3

62.5/125 1310 nm -22.5 -14 -32 -34 -3

1. The launch power is measured 1 meter (3.28 feet) from the transmitter.

58

2 km

(6,562 ft)

2 km

(6,562 ft)

Appendix B

177

Ferrule

Cleaning Fiber-Optic Connectors

This appendix contains the following sections:

 “Introduction”

 “Using a Cartridge-Type Cleaner” on page 60

 “Using a Swab” on page 62

This appendix describes how to clean fiber-optic connectors.

Introduction

The fiber-optic connector consists of a fiber-optic plug and its adapter. The
end of the fiber-optic cable is held in the core of the ferrule in the plug.
Light signals are transmitted through the core of the fiber. Even minor
smudges, or dirt, on the end face of the fiber (completely invisible to the
naked eye) can disrupt light transmission and lead to failure of the
component or of the entire system. Therefore, it is of utmost importance to
clean all fiber-optic connectors before use.

Figure 27 shows the ferrule in an SC connector.

Figure 27. Ferrule in an SC Connector Plug

59

Appendix B: Cleaning Fiber-Optic Connectors

Note

156

Unclean

Clean

TAPE A

Wiping

Direction

PUSH OPENPUSH OPEN

100

The end face of an unclean and clean ferrule are shown in Figure 28.

Using a Cartridge-Type Cleaner

Fiber-optic cartridge cleaners, shown in Figure 29, are available from
many vendors and are typically called “cartridge cleaners”.

Figure 28. Unclean and Clean Ferrule

Figure 29. Cartridge Cleaner

Do not use compressed air or aerosol air to clean a fiber-optic
connector.

To clean a fiber-optic connector using a cartridge cleaner, perform the
following procedure.

1. With one hand, hold the cartridge cleaner and push the lever on the
cleaning cartridge in the direction of the arrow to expose the cleaning
surface, as shown in Figure 30 on page 61.

2. Place the ferrule tip on the exposed cleaning surface and rub the
ferrule in a downward direction, as shown in Figure 30 on page 61.

60

AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Note

Caution

Note

Note

Warning

102

Figure 30. Rubbing the Ferrule Tip on the Cleaning Surface

Rub the ferrule tip on the cleaning surface in one direction only.

3. When you reach the end of the cleaning surface, pick up the ferrule tip,
rotate and place it at the top, and rub downwards at least two times.

Failing to pick up the ferrule tip when you reach the bottom of the
cleaning surface can result in static electricity that can damage the
fiber-optic cable.  E82

4. If desired, repeat Step 2 and Step 3.

5. If a fiber inspection scope is available, use the scope to inspect the
ferrule end face to make sure that it is clean.

6. Reconnect the cable to the port or protect the ferrule tip with a dust
cap.

Always keep a dust cap on a fiber-optic cable when it is not in use.

Do not touch the end face of the ferrule in the connector.

Do not stare into the laser beam.  L2

61

Appendix B: Cleaning Fiber-Optic Connectors

Warning

Note

Note

106

Using a Swab

Specially treated swabs, or stick cleaners, are available for cleaning inside
connector adapters or hard-to-reach ferrule tips. These swabs, often
referred to as “lint-free” or “alcohol-free” swabs, shown in Figure 31, are
available from many vendors. Stick cleaners are available in both 2.5 mm
and 1.25 mm sizes for use on SC and MU connectors, respectively.

Do not look directly at the fiber-optic cable ends or inspect the cable
ends with an optical lens.  L6

Figure 31. Lint-Free and Alcohol-Free Swabs

Never use a household cotton swab and alcohol to clean a fiber­optic connector. This may leave a residue on the ferrule tip.

Do not used compressed air or aerosol air to clean a fiber-optic
connector.

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AT-MMC2000/200 Series Mini Switching Media Converter Installation Guide

Note

Warning

Warning

157

To clean a recessed ferrule using a swab, perform the following
procedure.

1. Insert the swab into the adapter as shown in Figure 32. Rub the ferrule
tip with the swab.

Figure 32. Cleaning a Recessed Ferrule

2. If desired, repeat Step 1.

3. If a fiber inspection scope is available, use the scope to inspect the
connector to make sure that it is clean and to check for scratches, pits,
or other problems that may affect performance.

Always keep a dust cap on a fiber-optic cable when it is not in use.

Do not stare into the laser beam.  L2

Do not look directly at the fiber-optic cable ends or inspect the cable
ends with an optical lens.  L6

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Appendix B: Cleaning Fiber-Optic Connectors

64