Transition Networks M/E-PSW-FX-02 Manual de usuario

33487 Rev. C http://www.transition.com/ Page 1 of 12

User Guide

M/E-PSW-FX-02

Stand-Alone Media Converters

•Copper to Fiber

•10/100Base-TX to 100Base-FX

Contents

Introduction....................................................................................................................................................1

Models / Part Numbers .................................................................................................................................2

Installation.....................................................................................................................................................3

Copper and fiber ports..............................................................................................................................3

Electrostatic Discharge(ESD)...................................................................................................................3

Connect the fiber cable .............................................................................................................................3

Connect the twisted-pair copper cable .....................................................................................................4

Powering the media converter...................................................................................................................4

Power adapter............................................................................................................................................5

Operation.......................................................................................................................................................5

Status LEDs..............................................................................................................................................5

Product Features ......................................................................................................................................5

Optic and Cable Specifications.....................................................................................................................7

Technical Specifications................................................................................................................................9

Troubleshooting ..........................................................................................................................................10

Contact Us...................................................................................................................................................10

Compliance Information..............................................................................................................................11

Declaration of Conformity.......................................................................................................................11

Record of Revisions....................................................................................................................................12

Introduction

The miniature, plug-and-play operation Ethernet/Fast Ethernet bridging media converter allows

connecting 10Base-T Ethernet and/or 100Base-TX Fast Ethernet twisted-pair copper network devices to

network devices on a 100Base-FX Fast Ethernet fiber network.

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Models / Part Numbers

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Installation

Copper and fiber ports

The illustration below shows the front panel of the M/E-PSW-FX-02 media converters.

Electrostatic Discharge (ESD)

Always observe the following ESD precautions when installing or handing the

M/E-PSW-FX-02 media

converter:

•Do not remove the converter from its protective packaging until you are ready to

install it.

•Wear an ESD wrist grounding strap before handling any module or component. If you do not

have a wrist strap, maintain grounded contact with the unit throughout

any procedure requiring

ESD protection.

Connect the fiber cable

Full duplex (always ON) is on the fiber side only, therefore, the 512-Bit Rule does not

apply. The cable

lengths are constrained by the cable requirement.

1. Locate or build IEEE 803.2 compliant 100Base-FX fiber cable with male, two- stranded TX to RX

connectors installed at both ends.

2. Connect the fiber cable to the M/E-PSW-FX-02 media converter as follows:

•Connect the male TX cable connector to the female TX port.

•Connect the male RX cable connector to the female RX port.

3. Connect the fiber cable to the other device (media converter, hub, etc.) as follows:

•Connect the male TX cable connector to the female RX port.

•Connect the male RX cable connector to the female TX port.

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Connect the twisted-pair copper cable

The AutoCross feature allows either MDI (straight-through) or MDI-X (crossover) cable connections to

be configured automatically, according to network conditions.

•If half-duplex mode is used, refer to the 512-Bit Rule.

•If full-duplex mode is used, the 512-Bit Rule does not apply. The cable lengths

are constrained

by the cable requirements.

1. Locate or build IEEE 803.2™ compliant 10Base-T or 100Base-TX cable, with

RJ-45

connectors installed at both ends.

2. Connect the RJ-45 connector at one end of the cable to the RJ-45 port on the

M/E-PSW-FX-

02 media converter.

3. Connect the RJ-45 connector at the other end of the cable to the RJ-45 port on the other

device (switch, workstation, etc.).

Powering the media converter

The power options for the M/E-PSW-FX-02 media converter are product dependent.

The following

shows the various power configurations associated with each model.

M/E-PSW-FX-02 Back Panel Power

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Power adapter

AC power

1. Connect the barrel connector of the power adapter to the media converter’s

power port

(located on the back panel of the media converter).

2. Connect the power adapter plug to AC power.

3. Verify that the media converter is powered up by observing the illuminated

LED power

indicator light on the front panel.

DC power

Consult the user’s guide for the Transition Networks SPS-1872-SA DC external

power supply

for powering the media converter.

Operation

Status LEDs

Use the status LEDs to monitor the media converter operation in the network. LED descriptions are as

follows:

FX-Link/Act LED

Green ON = Link (fiber)

Flashing = Activity

TX-Link/Act LED

Green ON = Link Flashing = Activity

Power LED

Green ON = Connected to power

Product Features

Congestion reduction

The M/E-PSW-FX-02 media converters do not forward collision signals or error packets from one collision

domain to another, resulting in improvements in baseline network performance. In addition, the media

converter filters packets destined for local devices, which reduces network congestion.

Auto-Negotiation

The Auto-Negotiation feature is ON permanently for the M/E-PSW-FX-02 media converters. Auto-

Negotiation allows the media converter to configure itself automatically to achieve the best possible mode

of operation over a link. It broadcasts speed (10 Mb/s or 100 Mb/s) and duplex capabilities (full or half) to

the other device and negotiates the best mode of operation. Auto-Negotiation allows quick and easy

installation because the optimal link is established automatically.

In a scenario where an auto-negotiation device is linked to a non-negotiating device, the negotiating

device via parallel detection recognizes the speed of that second device then establishes the best

operating speed (10Mb/s or 100Mb/s) at half- duplex.

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AutoCross™

The AutoCross feature allows using either straight-through (MDI) or crossover (MDI-X) copper cables

when connecting to 10Base-T or 100Base-TX devices. AutoCross determines the characteristics of the

connection and automatically configures the device to link up, regardless of the copper cable

configuration, MDI or MDI-X.

Auto-Negotiation, AutoCross, Link Pass-Through, Far End Fault

Automatic link restoration

The media converter will automatically re-establish the link when connected to switches if the link is lost,

even with Auto-Negotiation and Link Pass-through (both directions) enabled.

Full-Duplex flow control

In a full-duplex network, maximum cable lengths are determined by the type of cables used. See front

cover for M/E-PSW-FX-02 cable specifications. The 512-Bit Rule does not apply in a full-duplex network.

Note: Full duplex is ON permanently for the fiber port only.

Half-Duplex flow control (512-Bit Rule)

In a half-duplex network, the maximum cable lengths are determined by the round- trip delay limitations of

each Fast Ethernet collision domain. (A collision domain is the longest path between any two terminal

devices; e.g., a terminal, switch, or router.)

The 512-Bit Rule determines the maximum length of cable permitted by calculating the round-trip delay in

bit-times (BT) of a particular collision domain. If the result is less than or equal to 512 BT, the path is

good.

For more information on the 512-Bit Rule, see the white paper titled “Collision Domains” on the Transition

Networks website at: www.transition.com

Flow Control

The process of adjusting the flow of data from one device to another ensures that the receiving device

can handle all of the incoming data. This is particularly important where the sending device is capable of

transmitting data much faster than the receiving device can accept it.

Distance extension

The M/E-PSW-FX-02 media converters can segment one (1) 10Base-T copper Ethernet and/or 100Base-

TX copper Fast Ethernet, and one (1)100Base-FX fiber Fast Ethernet collision domain:

• In a half-duplex Ethernet or Fast Ethernet environment, the M/E-PSW-FX-02 media converters extend

network distances by segmenting collision domains so that the 512-Bit Rule applies separately to each

collision domain.

• In a full-duplex Ethernet or Fast Ethernet environment, the M/E-PSW-FX-02 media converters extend

network distances to the physical cable limitations imposed by the selected twisted-pair copper fiber

cables.

Rate conversion

The M/E-PSW-FX-02 media converters allow connection of 10Mb/s terminal devices on a 10Base-T

legacy Ethernet copper network to 100Mb/s terminal devices on a 100Base-TX Fast Ethernet copper

network and/or to 100Mb/s terminal devices on a 100Base-FX Fast Ethernet fiber network.

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Far-End Fault

When a fault occurs on an incoming fiber link (1), the media converter transmits a Far-End Fault signal on

the outgoing fiber link (2). In addition the Far-End Fault signal also activates the Link Pass-Through,

which in turn, disables the link on the copper portion of the network (3) and (4).

Optic and Cable Specifications

The physical characteristics must meet or exceed IEEE 802.3™ specifications.

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Technical Specifications

For current information view the online user guide at www.transition.com.

* MTBF (Mean Time Between Failure) is estimated using the predictability method. The computation is

based on the MIL-HDBK-217 F and Bellcore standards..

**Manufacturer’s rated ambient temperature.

WARNING: If the media converter is an IEEE802.3-2005 Powered Device (PD) capable of receiving

power via the Media Dependent Interface (MDI) leads, the power source, connector, and cable attached

to the barrel power connector must meet the isolation requirement specified in IEEE802.3-2005. Failure

to observe this warning could result in an electrical shock.

CAUTION: Copper based media ports, e.g., Twisted Pair (TP) Ethernet, USB, RS232, RS422, RS485,

DS1, DS3, Video Coax, etc., are intended to be connected to intra- building (inside plant) link segments

that are not subject to lightening transients or power faults. Copper-based media ports, e.g., Twisted Pair

(TP) Ethernet, USB, RS232, RS422, RS485, DS1, DS3, Video Coax, etc., are NOT to be connected to

inter- building (outside plant) link segments that are subject to lightening transients or power faults.

Failure to observe this caution could result in damage to equipment.

Copper-based media ports, e.g., Twisted Pair (TP) Ethernet, USB, RS232, RS422, RS485, DS1, DS3,

Video Coax, etc., are intended to be connected to intra-building (inside plant) link segments that are not

subject to lightening transients or power faults. Copper based media ports, e.g., Twisted Pair (TP)

Ethernet, USB, RS232, RS422, RS485, DS1, DS3, Video Coax, etc., are NOT to be connected to inter-

building (outside plant) link segments that are subject to lightening transients or power faults.

WARNING: Visible and invisible laser radiation when open. Do not stare into the beam or view directly

with optical instruments. Failure to observe this warning could result in an eye injury or blindness.

WARNING: Use of controls, adjustments, or the performance of procedures other than those specified

herein could result in hazardous radiation exposure.

The information in this user’s guide is subject to change. For the most up-to-date information, view the

user’s guide on-line at: www.transition.com. and the click on Product/Prouduct Finder.

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Troubleshooting

If the media converter fails, isolate and correct the failure by determining the answers to the following

questions, and then taking the indicated action:

1. Is the power LED illuminated and did the TX and FX LEDs turn ON and then

turn OFF?

•Is the power adapter the proper type of voltage and cycle frequency for the AC outlet?

•Is the power adapter properly installed in the media converter and in the

outlet?

•If PoE, is the RJ-45 jack receiving power from the input device? (See

Technical Spec.)

•Contact Technical Support: US/Canada: 1-800-260-1312, International:

00-1-952-941-

7600.

YES

•Proceed to step 2.

2. Are the “TX and FX-Link/ACT” LEDs illuminated on the RJ-45 port ?

•Check the copper cables for proper connection.

•Check the fiber cables for proper connection.

•Contact Technical Support: US/Canada: 1-800-260-1312, International:

00-1-952-941-

7600.

YES

•Contact Technical Support: US/Canada: 1-800-260-1312, International:

00-1-952-941-

7600.

Technical support

Technical support is available 24-hours a day

US and Canada: 1-800-260-1312

International: 00-1-952-941-7600

Transition now

Chat live via the Web with Transition Networks Technical Support.

Log onto www.transition.com and click the Transition Now link.

Web-based seminars

Transition Networks provides seminars via live web-based training.

Log onto www.transition.com and click the Learning Center link.

E-Mail Ask a question anytime by sending an e-mail to our technical support staff.

techsupport@transition.com

Address

Transition Networks

10900 Red Circle Drive

Minnetonka, MN 55343, U.S.A.

telephone: 952-941-7600

toll free: 800-526-9267

fax: 952-941-2322

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