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COMPLIANCE INFORMATION

UL Listed 
C-UL Listed (Canada)
CISPR/EN55022 Class A

FCC Regulations

This equipment has been tested and found to comply with the limits for a class A digital device, pursuant
to part 15 of the 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 the
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 the user’s own expense.

Canadian Regulations

This digital apparatus does not exceed the Class A limits for radio noise for digital apparatus set out on
the radio interference regulations of the Canadian Department of Communications.

Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables

aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le ministère des Communications du Canada.

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 risque de créer des
interférences radioélectriques, il appartiendra alors à l’utilsateur de prende les measures spécifiques
appropriées

VCCI Class 1 Compliance

This equipment is in the 1st Class category (information equipment to be used in commercial and/or
industrial areas) and conforms to the standards set by the Voluntary Control Council For Interference by
Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in
commercial and/or industrial areas.  When used in a residential area or in an adjacent area thereto,
interference may be caused to radio and TV receivers, etc.  Read the instructions for correct handling.

Trademark Notice

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

Copyright Restrictions

© 2000 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.

33164.

B

CAUTION:  RJ connectors are NOT INTENDED FOR CONNECTION TO THE
PUBLIC TELEPHONE NETWORK. Failure to observe this caution could result in
damage to the public telephone network.

Der Anschluss dieses Gerätes an ein öffentlickes Telekommunikationsnetz in den EG-Mitgliedstaaten
verstösst gegen die jeweligen einzelstaatlichen Gesetze zur Anwendung der Richtlinie 91/263/EWG zur
Angleichung der Rechtsvorschriften der Mitgliedstaaten über Telekommunikationsendeinrichtungen
einschliesslich der gegenseitigen Anerkennung ihrer Konformität. 

The Black Box Corporation LE2127A-R3 series transceiver with LinkAlert

is a media access unit (MAU) that connects the AUI port of any DTE,
repeater, or other network device, either directly or through an AUI cable,
to an Ethernet

10BASE-FL device. The 10BASE-FL device is connected to

the LE2127A-R3 media converter through multimode fiber OR singlemode
fiber, selected by LE2127A-R3 model number.  

NOTE: The LE2127A-R3 functions
either in half-duplex mode or in full-
duplex mode, depending upon the
network devices to which the media
converter is attached. 

AUI/10BASE-FL

Transceiver

LE2127A-R3, LE2127A-SC-R3, LE2127A-SM-R3

USER’S GUIDE

LE2127A-R3 in the Network  . . . . . . .2
Installation  . . . . . . . . . . . . . . . . . . . .3
Operation . . . . . . . . . . . . . . . . . . . . .4
Fault Isolation and Correction  . . . . .5
Cable Specifications  . . . . . . . . . . . . .6
Technical Specifications  . . . . . . . . . .7
Compliance Information . . . . . . . . . .8

ST

A

TUS

RX

TX

COL

ON = OK

LE2127A-R3

Provides an AUI connector and a set of
RX (receive) and TX (transmit) 
ST
connectors to 10BASE-FL 850nm
multimode 
fiber. 

LE2127A-SC-R3

Provides an AUI connector and an RX
(receive) /TX (transmit) 
SC connector to
10BASE-FL 850nm multimode fiber. 

LE2127A-SM-R3 

Provides an AUI connector and a set of
RX (receive) and TX (transmit) 
ST
connectors to 10BASE-FL 1300nm
singlemode 
fiber. 

Summary of Contents for LE2127A-R3

Page 1: ...hines aimed at preventing radio interference in commercial and or industrial areas When used in a residential area or in an adjacent area thereto interference may be caused to radio and TV receivers etc Read the instructions for correct handling Trademark Notice All registered trademarks and trademarks are the property of their respective owners Copyright Restrictions 2000 Black Box Corporation Al...

Page 2: ...on 1000 Park Drive Lawrence PA 15055 USA Model AUI 10BASE FL Transceiver Part Number LE2127A R3 LE2127A SC R3 LE2127A SM R3 Regulation EMC Directive 89 336 EEC Purpose To declare that the LE2127A R3 to which this declaration refers is in conformity with the following standards EMC CISPR 22 1985 Class A EN 55022 1988 Class A EN 50082 1 1992 EN 60950 A4 1997 IEC 801 2 IEC 801 3 and IEC 801 4 IEC 950...

Page 3: ...Mode UP Enable half duplex mode when connecting to half duplex network devices DOWN Enable full duplex mode when connecting to full duplex network devices Default is enabled UP NOTE DO NOT USE FULL DUPLEX WHEN CONNECTING THE TRANSCEIVER TO A REPEATER 4 Not Used Install Cable NOTE See page 6 for cable specifications and configurations FIBER Locate or build 10BASE FL compliant fiber cable with male ...

Page 4: ...minated amber LED indicates packet transmission AUI to fiber RX Flashing or illuminated amber LED indicates packet reception fiber to AUI FAULT ISOLATION and CORRECTION If the transceiver fails determine the answers to the following questions 1 Is the STATUS LED on the transceiver illuminated NO Verify that the transceiver is installed properly in the AUI port and that the DTE device is powered ON...

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