Black Box LGC121A-R3 User manual

LGC120A-R2 Rev. 1 56-80630BB-00 Rev. C2
LGC120A-R2 LGC125A-R2
LGC121A-R3LGC126A-R2
LGC122A-R2 LGC127A-R2
LGC124A-R2 LGC128A-R2
Miniature Media Converter 10/100/1000 Switching
Connect Ethernet, Fast Ethernet, or Gigabit
Ethernet copper ports to 1000-Mbps multimode
duplex, single-mode duplex, or single-mode
single-strand fiber optic cable.

Page 2 877-877-2269 | blackbox.com LGC120A-R2
TRADEMARKS USED IN THIS MANUAL
Black Box and the Double Diamond logo are registered trademarks of BB
Technologies, Inc.
Any other trademarks mentioned in this manual are acknowledged to be the
property of the trademark owners.
Notes
LGC120A-R2 877-877-2269 | blackbox.com Page 15

Notes
FCC and IC RFI Statements
LGC120A-R2 877-877-2269 | blackbox.com Page 3
FCC and Industry Canada RF Interference Statements
Class A Digital Device. This equipment has been tested and found to comply with
the limits for a Class A computing device pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. However, there is no guarantee that
interference will not occur in a particular installation. This equipment generates,
uses, and can radiate radio frequency energy, and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. If this equipment does cause harmful interference to radio or
telephone reception, which can be determined by turning the equipment off and on,
the user is encouraged to try to correct the interference by one of the following
measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
•Consult an experienced radio/TV technician for help.
CAUTION
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
To meet FCC requirements, shielded cables and power cords are required to
connect this device to a personal computer or other Class A certified device.
This digital apparatus does not exceed the Class A limits for radio noise emission
from digital apparatus set out in the Radio Interference Regulation of Industry
Canada.

Certifications
Page 4 877-877-2269 | blackbox.com LGC120A-R2
Certifications
European Directive 2002/96/EC (WEEE) requires that any equipment that
bears this symbol on product or packaging must not be disposed of with
unsorted municipal waste. This symbol indicates that the equipment should be
disposed of separately from regular household waste. It is the consumer’s
responsibility to dispose of this and all equipment so marked through
designated collection facilities appointed by government or local authorities.
Following these steps through proper disposal and recycling will help prevent
potential negative consequences to the environment and human health. For
more detailed information about proper disposal, please contact local
authorities, waste disposal services, or the point of purchase for this equipment.
Class 1 Laser product, Luokan 1 Laserlaite,
Laser Klasse 1, Appareil A’Laser de Classe
Chapter 7: Electrostatic Discharge Precautions
LGC120A-R2 877-877-2269 | blackbox.com Page 13
7. Electrostatic Discharge Precautions
Electrostatic discharge (ESD) can cause damage to any product, add-in
modules or stand alone units, containing electronic components. Always
observe the following precautions when installing or handling these kinds of
products.
1. Do not remove unit from its protective packaging until ready to install.
2. Wear an ESD wrist grounding strap before handling any module or component.
If the wrist strap is not available, maintain grounded contact with the system unit
throughout any procedure requiring ESD protection.
3. Hold the units by the edges; do not touch the electronic components or gold
connectors.
4. After removal, always place the boards on a grounded, static-free surface, ESD
pad or in a proper ESD bag. Do not slide the modules or stand alone units over
any surface.
WARNING! Integrated circuits and fiber optic components
are extremely susceptible 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.
877-877-2269

Chapter 6: Fiber Optic Cleaning Guidelines
Page 12 877-877-2269 | blackbox.com LGC120A-R2
6. Fiber Optic Cleaning Guidelines
Fiber Optic transmitters and receivers are extremely susceptible to
contamination by particles of dirt or dust, which can obstruct the optic path and
cause performance degradation. Good system performance requires clean
optics and connector ferrules.
1. Use fiber patch cords (or connectors, if you terminate your own fiber) only from a
reputable supplier; low-quality components can cause many hard-to-diagnose
problems in an installation.
2. Dust caps are installed at Black Box to ensure factory-clean optical devices.
These protective caps should not be removed until the moment of connecting the
fiber cable to the device. If you need to disconnect the fiber device, reinstall the
protective dust caps.
3. Store spare caps in a dust-free environment such as a sealed plastic bag or box
so that when reinstalled they do not introduce any contamination to the optics.
4. If you suspect that the optics have been contaminated, alternate between
blasting with clean, dry, compressed air and flushing with methanol to remove
particles of dirt.
Table of Contents
LGC120A-R2 877-877-2269 | blackbox.com Page 5
Table of Contents
Part Numbers ......................................................................................................6
1. Specifications ......................................................................................... 7
2. Overview: About the Miniature Media Converter 10/100/1000
Switching ................................................................................................ 8
3. Install the Miniature Media Converter 10/100/1000 Switching............... 9
3.1Powering the Miniature Media Converter 10/100/1000 Switching ......... 9
4. Operation.............................................................................................. 10
4.1LED Operation...................................................................................... 10
5. Contacting Black Box ........................................................................... 11
6. Fiber Optic Cleaning Guidelines ..........................................................12
7. Electrostatic Discharge Precautions ....................................................13

Part Numbers
Page 6 877-877-2269 | blackbox.com LGC120A-R2
Part Numbers
Part Number Description
LGC120A-R2 TX/SX-MM850-SC
LGC121A-R3 TX/LX-SM1310-SC
LGC122A-R2 TX/LX-SM1310/PLUS-SC
LGC124A-R2 TX/LX-SM1550/LONG-SC
LGC125A-R2 TX/SSLX-SM1310-SC (1310xmt/1550rcv)
LGC126A-R2 TX/SSLX-SM1550-SC (1550xmt/1310rcv)
LGC127A-R2 TX/SSLX-SM1310/PLUS-SC (1310xmt/1550rcv)
LGC128A-R2 TX/SSLX-SM1550/PLUS-SC (1550xmt/1310rcv)
Chapter 5: Contacting Black Box
LGC120A-R2 877-877-2269 | blackbox.com Page 11
5. Contacting Black Box
Black Box Customer Service
Order toll-free in the U.S.: Call 877-877-BBOX
(outside U.S. call 724-746-5500)
Free technical support, 24 hours a day, 7 days a week.
Call: 877-877-2269 or Fax: [phone]
Mail order: Black Box Corporation
1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com
E-mail: [e-mail]

Chapter 4: Operation
Page 10 877-877-2269 | blackbox.com LGC120A-R2
4. Operation
4.1 LED Operation
Each module features diagnostic LEDs that provide information on features and
ports.
FX LNK/ACT Glows green when a link is established on the fiber port;
blinks green when activity is detected on the fiber port.
TX LNK/ACT Glows amber when a link is established on the copper port;
blinks amber when activity is detected on the copper port.
Chapter 1: Specifications
LGC120A-R2 877-877-2269 | blackbox.com Page 7
1. Specifications
AC Wall Adapter 100 to 240 ±10% VAC input, 5 VDC output, 2A max.
Operating
Temperature
+32°F to +122°F (0°C to +50°C)
Storage Temperature -31°C to +167°F (-35°C to +75°C)
Humidity 5% to 95% (non-condensing); 0 to 10,000 ft. altitude
Ethernet Connections 10/100/1000 BaseT, Auto Negotiation, Auto-Cross,
Flow Control, 1536 MTU, Full Line-Rate Forwarding
Dimensions 0.83”H x 1.80”W x 3.35”D (2.11 x 4.57 x 8.51 cm)
NOTE: The media converters are now compliant to EN62368.

Chapter 2: Overview
Page 8 877-877-2269 | blackbox.com LGC120A-R2
2. Overview: About the Miniature Media Converter 10/100/1000
Switching
The Miniature Media Converter 10/100/1000 Switching is a 10/100/1000 Auto
Negotiating, switching miniature media converter. The fiber port always
operates at 1000 Mbps FDX; the copper port Auto Negotiates the connected
device’s speed and duplex mode: 10 Mbps, 100 Mbps or 1000 Mbps, and HDX
or FDX (including Flow Control).
The Miniature Media Converter 10/100/1000 Switching offers plug-and-play
operation, including the AutoCross feature which automatically selects between
a crossover work-station or pass-through repeater hub connection depending
on the connected device.
Chapter 3: Install the Miniature Media Converter 10/100/1000 Switching
LGC120A-R2 877-877-2269 | blackbox.com Page 9
3. Install the Miniature Media Converter 10/100/1000 Switching
The Miniature Media Converter 10/100/1000 Switching installs in a Black Box
PowerTray 18-slot or can be used as a standalone media converter. As a
standalone, the Miniature Media Converter 10/100/1000 Switching uses a
universal external switching power cube with 100 – 240 ±10% VAC input and
5 VDC output.
3.1 Powering the Miniature Media Converter 10/100/1000 Switching
The Miniature Media Converter includes multiple powering options:
•A country-specific, high-reliability AC power adapter (included)
•The IEEE 802.3af Power over Ethernet standard; draws power from power
sourcing equipment
•PowerTray 18-slot for Rackmounting

Chapter 2: Overview
Page 8 877-877-2269 | blackbox.com LGC120A-R2
2. Overview: About the Miniature Media Converter 10/100/1000
Switching
The Miniature Media Converter 10/100/1000 Switching is a 10/100/1000 Auto
Negotiating, switching miniature media converter. The fiber port always
operates at 1000 Mbps FDX; the copper port Auto Negotiates the connected
device’s speed and duplex mode: 10 Mbps, 100 Mbps or 1000 Mbps, and HDX
or FDX (including Flow Control).
The Miniature Media Converter 10/100/1000 Switching offers plug-and-play
operation, including the AutoCross feature which automatically selects between
a crossover work-station or pass-through repeater hub connection depending
on the connected device.
Chapter 3: Install the Miniature Media Converter 10/100/1000 Switching
LGC120A-R2 877-877-2269 | blackbox.com Page 9
3. Install the Miniature Media Converter 10/100/1000 Switching
The Miniature Media Converter 10/100/1000 Switching installs in a Black Box
PowerTray 18-slot or can be used as a standalone media converter. As a
standalone, the Miniature Media Converter 10/100/1000 Switching uses a
universal external switching power cube with 100 – 240 ±10% VAC input and
5 VDC output.
3.1 Powering the Miniature Media Converter 10/100/1000 Switching
The Miniature Media Converter includes multiple powering options:
•A country-specific, high-reliability AC power adapter (included)
•Via the optional USB Power Adapter Cable (LHC021A or LGC022A)
connected to computer’s USB port
•PowerTray 18-slot for Rackmounting

Chapter 4: Operation
Page 10 877-877-2269 | blackbox.com LGC120A-R2
4. Operation
4.1 LED Operation
Each module features diagnostic LEDs that provide information on features and
ports.
FX LNK/ACT Glows green when a link is established on the fiber port;
blinks green when activity is detected on the fiber port.
TX LNK/ACT Glows amber when a link is established on the copper port;
blinks amber when activity is detected on the copper port.
Chapter 1: Specifications
LGC120A-R2 877-877-2269 | blackbox.com Page 7
1. Specifications
AC Wall Adapter 100 to 240 ±10% VAC input, 5 VDC output, 2A max.
Operating
Temperature
+32°F to +122°F (0°C to +50°C)
Storage Temperature -31°C to +167°F (-35°C to +75°C)
Humidity 5% to 95% (non-condensing); 0 to 10,000 ft. altitude
Ethernet Connections 10/100/1000 BaseT, Auto Negotiation, Auto-Cross,
Flow Control, 1536 MTU, Full Line-Rate Forwarding
Dimensions 0.83”H x 1.80”W x 3.35”D (2.11 x 4.57 x 8.51 cm)

Part Numbers
Page 6 877-877-2269 | blackbox.com LGC120A-R2
Part Numbers
Part Number Description
LGC120A-R2 TX/SX-MM850-SC
LGC121A-R2 TX/LX-SM1310-SC
LGC122A-R2 TX/LX-SM1310/PLUS-SC
LGC124A-R2 TX/LX-SM1550/LONG-SC
LGC125A-R2 TX/SSLX-SM1310-SC (1310xmt/1550rcv)
LGC126A-R2 TX/SSLX-SM1550-SC (1550xmt/1310rcv)
LGC127A-R2 TX/SSLX-SM1310/PLUS-SC (1310xmt/1550rcv)
LGC128A-R2 TX/SSLX-SM1550/PLUS-SC (1550xmt/1310rcv)
LGC129A-R2 TX/SSLX-SM1490/LONG-SC (1490xmt/1550rcv)
LGC130A-R2 TX/SSLX-SM1550/LONG-SC (1550xmt/1490rcv)
Chapter 5: Contacting Black Box
LGC120A-R2 877-877-2269 | blackbox.com Page 11
5. Contacting Black Box
Black Box Customer Service
Order toll-free in the U.S.: Call 877-877-BBOX
(outside U.S. call 724-746-5500)
Free technical support, 24 hours a day, 7 days a week.
Call: 877-877-2269 or Fax: [phone]
Mail order: Black Box Corporation
1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com
E-mail: [e-mail]

Chapter 6: Fiber Optic Cleaning Guidelines
Page 12 877-877-2269 | blackbox.com LGC120A-R2
6. Fiber Optic Cleaning Guidelines
Fiber Optic transmitters and receivers are extremely susceptible to
contamination by particles of dirt or dust, which can obstruct the optic path and
cause performance degradation. Good system performance requires clean
optics and connector ferrules.
1. Use fiber patch cords (or connectors, if you terminate your own fiber) only from a
reputable supplier; low-quality components can cause many hard-to-diagnose
problems in an installation.
2. Dust caps are installed at Black Box to ensure factory-clean optical devices.
These protective caps should not be removed until the moment of connecting the
fiber cable to the device. If you need to disconnect the fiber device, reinstall the
protective dust caps.
3. Store spare caps in a dust-free environment such as a sealed plastic bag or box
so that when reinstalled they do not introduce any contamination to the optics.
4. If you suspect that the optics have been contaminated, alternate between
blasting with clean, dry, compressed air and flushing with methanol to remove
particles of dirt.
Table of Contents
LGC120A-R2 877-877-2269 | blackbox.com Page 5
Table of Contents
Part Numbers ......................................................................................................6
1. Specifications ......................................................................................... 7
2. Overview: About the Miniature Media Converter 10/100/1000
Switching ................................................................................................ 8
3. Install the Miniature Media Converter 10/100/1000 Switching............... 9
3.1 Powering the Miniature Media Converter 10/100/1000 Switching ......... 9
4. Operation.............................................................................................. 10
4.1 LED Operation...................................................................................... 10
5. Contacting Black Box ........................................................................... 11
6. Fiber Optic Cleaning Guidelines ..........................................................12
7. Electrostatic Discharge Precautions ....................................................13

Certifications
Page 4 877-877-2269 | blackbox.com LGC120A-R2
Certifications
European Directive 2002/96/EC (WEEE) requires that any equipment that
bears this symbol on product or packaging must not be disposed of with
unsorted municipal waste. This symbol indicates that the equipment should be
disposed of separately from regular household waste. It is the consumer’s
responsibility to dispose of this and all equipment so marked through
designated collection facilities appointed by government or local authorities.
Following these steps through proper disposal and recycling will help prevent
potential negative consequences to the environment and human health. For
more detailed information about proper disposal, please contact local
authorities, waste disposal services, or the point of purchase for this equipment.
Class 1 Laser product, Luokan 1 Laserlaite,
Laser Klasse 1, Appareil A’Laser de Classe
Chapter 7: Electrostatic Discharge Precautions
LGC120A-R2 Page 13
7. Electrostatic Discharge Precautions
Electrostatic discharge (ESD) can cause damage to any product, add-in
modules or stand alone units, containing electronic components. Always
observe the following precautions when installing or handling these kinds of
products.
1. Do not remove unit from its protective packaging until ready to install.
2. Wear an ESD wrist grounding strap before handling any module or component.
If the wrist strap is not available, maintain grounded contact with the system unit
throughout any procedure requiring ESD protection.
3. Hold the units by the edges; do not touch the electronic components or gold
connectors.
4. After removal, always place the boards on a grounded, static-free surface, ESD
pad or in a proper ESD bag. Do not slide the modules or stand alone units over
any surface.
WARNING! Integrated circuits and fiber optic components
are extremely susceptible 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.
877-877-2269 | blackbox.com

Notes
FCC and IC RFI Statements
LGC120A-R2 877-877-2269 | blackbox.com Page 3
FCC and Industry Canada RF Interference Statements
Class A Digital Device. This equipment has been tested and found to comply with
the limits for a Class A computing device pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. However, there is no guarantee that
interference will not occur in a particular installation. This equipment generates,
uses, and can radiate radio frequency energy, and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. If this equipment does cause harmful interference to radio or
telephone reception, which can be determined by turning the equipment off and on,
the user is encouraged to try to correct the interference by one of the following
measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
•Consult an experienced radio/TV technician for help.
CAUTION
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
To meet FCC requirements, shielded cables and power cords are required to
connect this device to a personal computer or other Class A certified device.
This digital apparatus does not exceed the Class A limits for radio noise emission
from digital apparatus set out in the Radio Interference Regulation of Industry
Canada.
LGC120A-R2 877-877-2269 | blackbox.com Page 14

Page 2 877-877-2269 | blackbox.com LGC120A-R2
TRADEMARKS USED IN THIS MANUAL
Black Box and the Double Diamond logo are registered trademarks of BB
Technologies, Inc.
Any other trademarks mentioned in this manual are acknowledged to be the
property of the trademark owners.
Notes
LGC120A-R2 877-877-2269 | blackbox.com Page 15

EN_NET_Manual_LGC120A-R2_Rev3_2301.pdf
LGC120A-R2 LGC125A-R2 LGC129A-R2
LGC121A-R2 LGC126A-R2 LGC130A-R2
LGC122A-R2 LGC127A-R2
LGC124A-R2 LGC128A-R2
Miniature Media Converter 10/100/1000 Switching
Connect Ethernet, Fast Ethernet, or Gigabit
Ethernet copper ports to 1000-Mbps multimode
duplex, single-mode duplex, or single-mode
single-strand fiber optic cable.
Black Box Tech Support: FREE! Live. 24/7.
Tech support the
way it should be.
Great tech support is just 60 seconds away at
877-877-2269 or blackbox.com.
About Black Box
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