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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
Set the LinkAlert
™
Switch ..................................................................2
AutoCross
™
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
Port One - Copper
Port Two - Duplex Fiber-Optic
LE2122A-R4
RJ-45, 10Base-T
100 m (328 ft)*
ST, 10Base-FL, 850 nm multimode
2 km (1.2 miles)*
LE2122A-SM-R4
RJ-45, 10Base-T
100 m (328 ft)*
ST, 10Base-FL, 1300 nm
singlemode
20 km (12.4 miles)*
*
Typical maximum cable distance; actual distance depends on the physical characteristics of the network
installation.