Black Box LE2122A-R4, LE2122A-SM-R4 User Manual

User’s Guide

LE2122A-R4

Stand-Alone Media Converter

 Ethernet
 Copper to Fiber
 10Base-T to 10Base-FL

Contents

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

Part Numbers .........................................................................................1

Installation ..............................................................................................2

Set the LinkAlert
AutoCross

Install the Copper Cable ....................................................................2

Install the Fiber Cable........................................................................3

Power the Media Converter ...............................................................3

Operation................................................................................................4

Technical Specifications.........................................................................4

Cable Specifications...............................................................................5

Fiber Cable ........................................................................................5

Copper Cable.....................................................................................5

Troubleshooting .....................................................................................6

Contact Us..............................................................................................7

Compliance Information .........................................................................8

FCC Regulations ...............................................................................8

Canadian Regulations .......................................................................8

European Regulations .......................................................................8

™

™

Switch ..................................................................2

Feature ..........................................................................2

Introduction

Black Box Corporation’s LE2122A-R4 series Ethernet 10Base-T to 10Base-FL media converters connect
half-duplex or full-duplex, unshielded or shielded, 10 Mb/s, twisted pair copper cable to half-duplex or full­duplex, 10 Mb/s, singlemode or multimode fiber optic cable.

Part Numbers

Part Number Port One - Copper Port Two - Duplex Fiber-Optic

LE2122A-R4

LE2122A-SM-R4

RJ-45, 10Base-T
100 m (328 ft)*

RJ-45, 10Base-T
100 m (328 ft)*

* Typical maximum cable distance; actual distance depends on the physical characteristics of the network

installation.

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ST, 10Base-FL, 850 nm multimode
2 km (1.2 miles)*

ST, 10Base-FL, 1300 nm
singlemode

20 km (12.4 miles)*

LE2122A-R4

.)

Installation

Set the LinkAlert™ Switch

The LinkAlert™ switch is located on the side of the media converter. Use a small flat blade screwdriver or
a similar device to set the recessed switch.

LEFT Enable

RIGHT Disables the LinkAlert™ function. LinkAlert Disabled

Because most Ethernet technologies are unable to recognize downlink faults, a failed link may appear
normal to network management; requiring unnecessary troubleshooting. When the LinkAlert feature is
activated, the media converter passes copper-side link faults to the fiber side and fiber-side links to the
copper side. This feature allows all faults to be detected by network management.

Note: The enable/disable switch allows the LinkAlert™ feature to be disabled. LinkAlert™ may interfere

with the Auto-Negotiation feature of other devices in networks where there are two media converters
installed in series.

s the LinkAlert™ function LinkAlert Enabled

AutoCross™ Feature

The AutoCross feature allows either straight-through (MDI) or crossover (MDI-X) cables to be used when
connecting to 10Base-TX devices (hubs, transceivers, NICs, etc.). AutoCross determines the
characteristics of the cable connection and automatically configures the unit to link up, regardless of the
cable configuration. (Requires no operator intervention.)

Install the Copper Cable

1. Locate or build 10Base-T compliant copper cables with male, 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 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.).

RJ-45 port

on the media

converter

(switch, work station, etc

RJ-45 port

on the other device

2

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Install the Fiber Cable

1. Locate or build 10Base-FL compliant fiber cable with male, two-stranded TX to RX connectors

installed at both ends.

2. Connect the fiber cables to the media converter as described:

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

1. Connect the fiber cables to the other device (another media converter, hub, etc.) as described:

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

Power the Media Converter

1. Install the power adapter cord to the back of the media converter.

2. Connect the power adapter plug to AC power.

3. Verify that the media converter is powered by observing the illuminated LED power indicator light.

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LE2122A-R4

Operation

After installation, the media converter should function without operator intervention. Use the status LEDs
to monitor media converter operation in the network.

Pwr (Power) On = Connection to external AC power.
Link (Fiber) On = 10Base-FL link and normal operation.

Off = Lack of power OR a downed 10Base-FL link.

Link (RJ-45) On = 10Base-T link and normal operation.

Off = Lack of power OR downed 10Base-T link.

RX (Fiber) Flashing = Data reception on the 10Base-FL link.
RX (RJ-45) Flashing = Data reception on 10Base-T link.

Technical Specifications

Standards IEEE 802.3™
Data Rate 10 Mb/s
Case Dimensions 3.9" x 3.0" x 1.0" (99mm x 76mm x 25mm)
Weight 6 oz. (181 g) (approximate)
Power Supply 12 VDC, 0.5 A
DC Output Minimum output regulation: 5%

Connector: 2.1mm barrel, center pin positive

MTBF 54,337 hours (MIL217F2 V5.0) (MIL-HDBK-217F)

131,255 hours (Bellcore7 V5.0)

Environment Tmra*: 0 to 50°C (32° to 122° F)

Storage Temp: -20° to 85°C (-4° to 185°F)
Humidity: 5 to 95%, non condensing
Altitude: 0 to 10,000 feet

Warranty Lifetime

*Manufacturer’s rated ambient temperature.

Product is certified by the manufacturer to comply with DHHS Rule 21/CFR, Subchapter J applicable at
the date of manufacture.

CAUTION: Visible and Invisible Laser Radiation When Open. Do Not Stare Into Beam Or View Directly

With Optical Instruments.

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

herein may result in hazardous radiation exposure.

2

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Cable Specifications

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

Fiber Cable

Bit Error Rate: <10-9
Singlemode fiber (recommended): 9 μm
Multimode fiber (recommended): 62.5/125 μm
Multimode fiber (optional): 100/140, 85/140, 50/125 μm

LE2122A-R4 850 nM multimode

Fiber Optic Transmitter Power: min: -20.0 dBm max: -10.0 dBm
Fiber Optic Receiver Sensitivity: min: -32.5 dBm max: -7.5 dBm
Link Budget: 12.5 dB

LE2122A-SM-R4 1300 nM singlemode

Fiber Optic Transmitter Power: min: -29.0 dBm max: -10.0 dBm
Fiber Optic Receiver Sensitivity: min: -35.0 dBm max: -14.0 dBm
Link Budget: 6.0 dB

Copper Cable

Category 3: Minimum Requirement

Gauge 24 to 22 AWG
Attenuation 11.5 dB/100m @ 5-10 MHz

 Straight-Through OR
 Shielded Twisted-Pair (STP) OR

 Pins 1&2 and 3&6 are the two active pairs in an Ethernet network.

 RJ-45 Pin-out: Pin 1 = TD+, Pin 2 = TD-, Pin 3 = RD+, Pin 6 = RD-

 Use only dedicated wire pairs for the active pins:

(e.g., blue/white & white/blue, orange/white & white/orange, etc.)

 Do not use flat or silver satin wire.

Crossover Twisted-Pair cable may be used.

Unshielded Twisted-Pair (UTP) may be used.

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LE2122A-R4

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 P(ower) LED on the media converter illuminat

NO

• Is the power adapter the e and frequenc
NOTE: Refer to “P er fications on page 5.

• Is the power adapter properly installed in the media converter

• Contact Technical Supp 1312.

YES

• Proceed to step 2.

2. Is the 10Base-T Link LED illuminated?

NO

• Check the twisted-pair cable r connection.

• Contact Technical Support: [phone].

YES

• Proceed to

3. Is the 10Base-FL Link LED illuminated?

NO

• Che r f ection.

• Verify that the TX and RX cables on the media converter are c
respectively, on the other device.

• Contact Technical Support: [phone].

YES

• Proceed to step 4.

ck the fibe cables or proper conn

step 3.

proper voltag y for AC outlet?

ow Supply” speci

ort: (800) 260-

s for prope

ed?

and in the outlet?

onnected to RX and TX ports,

4.

NO

• Restart the attached device to restart the initialization process.

• Contact Technical Support: [phone].

YES

• Proceed to step 5.

5. Is the 10Base-FL RX LED illuminated?

NO

• Disconnect and reconnect the 10Base-FL cable to restart the initialization proc

• Restart the attached device to restart the initialization process.

• Contact Technical Support: [phone].

YES

• Contact Technical Support: [phone].

2

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Is the 10Base-T RX LED illuminated?

• Disconnect and reconnect the 10Base-T cable to restart the initialization process.

ess.

Contact Us

Tech Support Information

Technical Support, 24 hours a day, 7 days a week:
C

Ord

O

FREE Mail order

Black Box Corporation,
1 rk Drive, Lawrence,
PA 15055-1018

W te

w ckbox.com

E-m [e-mail] ail:

4-746-5500 or fax [phone]

all 72

ers

rder toll-free in the U.S.: 877-877-BBOX (outside U.S.A. call 724-746-5500)

000 Pa

eb si

ww.bla

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LE2122A-R4

Compliance

Information

FCC Regulations

This equipment has been tested and found to comply
to part 15
interference when the equipment is operated in a commercial environment. Th
uses, and can radiate radio frequency energy and, if not installed and used in a
instruction manual,

Operation of this equipm
user will be required to correc

Canadi

This digital apparatus
the radio interference regulations of t

Le présent appareil numériqu

ux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique

a

dicté par le ministère des Communications du Canada.

é

of the FCC rules. These limits are designed to provide reasonable protection against harmful

may cause harmful interference to radio communications.

ent in a residential area is likely to cause harmful interference, in which case the

t the interference at the user's own expense.

an Regulations

does not exceed the Class A limits for radio noise for digital apparatus set out on

he Canadian Department of Communications.

e n'émet pas de bruits radioélectriques dépassant les limites applicables

with the limits for a class A digital device, pursuant

is equipment generates,

ccordance with the

European Regulations

Warning This is a Class A product. In a domestic environment this product may cause radio interference

in which case the user may be required to take adequate measures.

Achtung ! Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb

dieses Gerätes Rundfunkstörungen auftreten, in weichen Fällen der Benutzer für entsprechende
Gegenmaßnahmen werantwortlich ist.

Attention ! Ceci est un produit de Classe A. Dans un environment domestique, ce produit risqué de créer

des interférences radioélectriques, il appartiendra alors à l'utilsateur de prende les measures spécifiques
appropriées.

Trademark Notice

All trademarks and registered trademarks are the property of their respective owners.

Copyright Restrictions

© 1999-2001, 2004 Black Box Corporation

All rights reserved. No part of this work may be reproduced or used in any form or by any means ­graphic, electronic, or mechanical - without written permission from Black Box Corporation.

Printed in the U.S.A.

33144.F

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