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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
™
Switch ..................................................................2
™
Feature ..........................................................................2
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
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 full-
duplex, 10 Mb/s, singlemode or multimode fiber optic cable.
Part Numbers
Part Number
LE2122A-R4
LE2122A-SM-R4
*
Typical maximum cable distance; actual distance depends on the physical characteristics of the network
installation.
24/7 Tech Support Call: 724 746-5500 (Outside U.S.A. Call: 724 746-5500)
Port One - Copper
RJ-45, 10Base-T
100 m (328 ft)*
RJ-45, 10Base-T
100 m (328 ft)*
Port Two - Duplex Fiber-Optic
ST, 10Base-FL, 850 nm multimode
2 km (1.2 miles)*
ST, 10Base-FL, 1300 nm
singlemode
20 km (12.4 miles)*
Page 1 of 8
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Summary of Contents for Black Box LE2122A-R4
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Page 1: Table Of Contents
European Regulations ...............8 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 full- duplex, 10 Mb/s, singlemode or multimode fiber optic cable. -
Page 2: Installation
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 Enables the LinkAlert™ function LinkAlert Enabled RIGHT Disables the LinkAlert™... -
Page 3: Install The Fiber Cable
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. ... -
Page 4: Operation
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. -
Page 5: Cable Specifications
9 μm Multimode fiber (recommended): 62.5/125 μm Multimode fiber (optional): 100/140, 85/140, 50/125 μm nM multimode LE2122A-R4 850 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... -
Page 6: Troubleshooting
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: Is the P(ower) LED on the media converter illuminat • Is the power adapter the... -
Page 7: Contact Us
Technical Support, 24 hours a day, 7 days a week: all 724-746-5500 or fax 724-746-0746 rder toll-free in the U.S.: 877-877-BBOX (outside U.S.A. call 724-746-5500) FREE Mail order Black Box Corporation, 000 Pa rk Drive, Lawrence, PA 15055-1018 eb si ww.bla... -
Page 8: Compliance Information
© 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.
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