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About Media Converters

The modular 

Media Converter Series

includes

modules that convert copper to single-mode,
multi-mode  or single-strand fiber at Ethernet, Fast
Ethernet and Gigabit Ethernet speeds, and mod-
ules that convert copper to thin coax at Ethernet
speeds.  Modules install in a variety of chassis.

Media Converter Chassis

Media  Converter  chassis

provide power to the media conversion modules.  

1-PPort

(LE7401A-R2) chassis include one media conversion module slot.

4-PPort

(LE7404A) chassis include four media conversion module slots.

8-PPort

(LE7408A) chassis is a 1U high rackmountable that includes eight

media conversion module slots. 
The 1, 4 and 8 slot chassis include a fixed 100/240 VAC power supply.

12-PPort

chassis is rackmountable and includes 12 media conversion module

slots and either a 100/240 VAC (LE74012A) or -48 VDC (LE74012A-DC)
power supply.  The 12-Slot chassis is 1U high and has the power on the rear
of the chassis with media conversion module slots on the front. 

10Mbps Media Conversion Modules

10Mbps Media Conversion Modules

provide a single conversion between

10Base-T twisted pair and either 10Base-FL fiber or 10Base-2 coax. Each module
requires one slot in a 

Media Converter

chassis.  The following versions are available:

LE740-TPSTM-R2

TP/FO-MM850-ST

4  Km 

LE740-TPSTM-SC-R2

TP/FO-MM850-SC

4  Km

LE740-TPSTS20-R2

TP/FO-SM1310/PLUS-ST

40 Km

LE740-TPSCS20-R2

TP/FO-SM1310/PLUS-SC

40 Km

LE740-TPBNC

TP/BNC

NOTE: All modules support half- and full-duplex except modules with BNC connectors are always HDX. 

N O T E

This manual will refer to 

all types of modules as “Media

Conversion Modules” except where differences require indi-
catation.

Q U I C K   S T A R T

Introduction

1

Board Diagrams

3

Jumper Settings

4

Crossover/Pass-Through

5

LinkLoss 

&

FiberAlert

6

Auto-Negotiation

8

Installation of Modules

9

LED Operation

11

Technical Support

11

Modular Media Converter 

Installation Guide 

(includes cchassis pplus 110 M

Mbps, 1100 M

Mbps, 11000 M

Mbps EEthernet 

and 110/100 SSwitching EEthernet M

Media C

Conversion M

Modules

LE7401A-R2
LE7404A
LE7408A
LE7412A
LE7412A-DC
LE740-TPSTM-R2
LE740-TPSTM-SC-R2

LE740-TPSTS20-R2
LE740-TPSCS20-R2
LE740-TPBNC
LH740-TPSTM-R2
LH740-TPSCM-R2
LH742-TPSTM-SX
LH740-TPSTS20-R2

LH740-TPSCS20-R2
LH741-TPSTSXM
LH741-TPSCSXM
LH741-TPSTM
LH741-TPSCM
LH741-TPSM
LH741-TPSCS13/15

LH741-TPSCS15/13
LH741-TPSCS13/1540
LH741-TPSCS15/1340
LG741-TXSXSC
LG741-TXLXSC
LG741-TXLXSC40
LG741-TXLXSC70

LG741-TXLXSC-13
LG741-TXLXSC-15
LG741-TXLXSC-1340
LG741-TXLXSC-1540

1000 Park Drive • Lawrence, PA  15055-1018 USA

TEL: (724) 746-5500 • FAX: 724-746-0746

[email protected] • www.blackbox.com

© 1992-2005 Black Box Corp.  All rights reserved.

The information in this document is subject to change without notice.  Black Box assumes no responsibility for any errors that may
appear in this document.  All product names are trademarks of the manufacturer.  Specific brands and product names may be trade-
marks and are the property of their respective companies.

Document Number 51-80780BB-02 A0

October 2005

Summary of Contents for LE740-TPSTM-R2

Page 1: ... LE740 TPBNC TP BNC NOTE All modules support half and full duplex except modules with BNC connectors are always HDX N O T E This manual will refer to all types of modules as Media Conversion Modules except where differences require indi catation Q U I C K S T A R T Introduction 1 Board Diagrams 3 Jumper Settings 4 Crossover Pass Through 5 LinkLoss FiberAlert 6 Auto Negotiation 8 Installation of Mo...

Page 2: ...G741 TXLXSC 13 TX SSLX SM1310 SC 10 Km LG741 TXLXSC 15 TX SSLX SM1550 SC 10 Km LG741 TXLXSC 1340 TX SSLX SM1310 PLUS SC 40 Km LG741 TXLXSC 1540 TX SSLX SM1550 PLUS SC 40 Km Configuring Media Conversion Modules Before installing you can configure 10Mbps and 100Mbps Modules for a variety of features see diagrams chart on page 3 4 for specific informa tion 10 100 Switching and Gigabit Modules have pl...

Page 3: ...iring ESD protection WARNING Integrated circuits and fiber optic components are extremely suscepti ble to electrostatic discharge damage Do not handle these components directly unless you are a qualified service technician and use tools and techniques that conform to accepted industry practices 3 Hold boards by the edges only do not touch the electronic components or gold connectors 4 After remova...

Page 4: ...N C P O R T T E R M I N A T I O N 10Mbps modules with BNC ports feature a 2 pin jumper block located at position JP1 or JP2 for terminating a thin coaxial segment at the media converter without an additional T con nector and terminator Jumper position is dependent on board revision see chart above To terminate a thin Ethernet segment at the media converter attach the cable directly to the BNC conn...

Page 5: ...d If the BNC port is not ter minated correctly the ACTIVITY light on the front panel will not glow T W I S T E D P A I R C R O S S O V E R P A S S T H R O U G H C O N N E C T I O N S Whether you are using crossover or straight through CAT5 twisted pair cabling 10Mbps and 10 100 Switching Modules will support both types of connections by one of the following methods AutoCross 100Mbps 00 Modules and...

Page 6: ... the cable to the other device is intact and the link pulses are reaching the other end The combination of FiberAlert and LinkLoss allows this information to be obtained even when physical access to a remote device and its link integrity LED is not available W H A T I S F O F X L I N K L O S S FO FX LinkLoss is a troubleshooting feature When a fault occurs on the fiber segment of a conversion FO F...

Page 7: ...ir link TP TX LinkLoss disables the transmitter on the media converter s fiber port This results in a loss of link on the device con nected to the fiber port W H A T I S F I B E R A L E R T FiberAlert minimizes the problems associated with the loss of one strand of fiber If a strand is unavailable the Black Box device at the receiver end notes the loss of link The device will then stop transmittin...

Page 8: ... I S O N T A B L E Feature Fault Location Disabled LEDs Enable At FX LinkLoss Fiber Twisted Pair Main Site Only TX LinkLoss Twisted Pair Fiber Remote Site Only FiberAlert Fiber Fiber Remote Site Only A U T O N E G O T I A T I O N O N 1 0 1 0 0 S W I T C H I N G M O D U L E S Auto Negotiation is a standard feature on 10 100 Switching Modules The fiber port always operates at 100 Mbps FDX the copper...

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