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 cabl e.
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.
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FCC and IC RFI Statements
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 partic ular i nstallation. 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 interferenc e 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 724-746-5500 | blackbox.com Page 3
Certifications
Certifications
Class 1 Laser product, Luokan 1 Laserlaite,
Laser Klasse 1, Appareil A’Laser de Classe
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.
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Table of Contents
Table of Contents
Part Numbers......................................................................................................6
1. Specifications.........................................................................................7
2. Overview: About the Miniature Media Conv erter 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
LGC120A-R2 724-746-5500 | blackbox.com Page 5
Part Numbers
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)
Page 6 724-746-5500 | blackbox.com LGC120A-R2
Chapter 1: Specifications
1. Specifications
AC Wall Adapter 100 to 240 ±10% VAC input, 5 VDC output, 2A
max.
Operating
+32°F to +122°F (0°C to +50°C)
Temperature
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)
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Chapter 2: Overview
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 Cont rol).
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.
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Chapter 3: Install the Miniature Media Converter 10/100/1000
Switching
3. Install the Miniature Media Converter 10/100/1000 Switching
The Miniature Media Converter 10/100/1000 Switchi ng 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
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Chapter 4: Operation
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.
Page 10 724-746-5500 | blackbox.com LGC120A-R2
Chapter 5: Contacting Black Box
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: 724-746-5500 or Fax: 724-746-0746
Mail order: Black Box Corporation
1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com
E-mail: info@blackbox.com
LGC120A-R2 724-746-5500 | blackbox.com Page 11
Chapter 6: Fiber Optic Cleaning Guidelines
6. Fiber Optic Cleaning Guidelines
Fiber Optic transmitters and receivers are extremely sus ceptible to
contamination by particles of dirt or dust, which can obstruct the optic path
and cause performance degradation. Good s y stem 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-todiagnose problems in an installation.
2. Dust caps are installed at Black Bo x to ensure factory-cl ean optical devices.
These protective caps should not be removed u ntil the moment of connec ting
the fiber cable to the device. If you need to disconnect the fiber device,
reinstall the protective dust caps.
3. Store spar e c a ps i n a dust- f ree env ironment 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.
Page 12 724-746-5500 | blackbox.com LGC120A-R2
Chapter 7: Electrostatic Discharge Precautions
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.
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Notes
Notes
LGC120A-R2 724-746-5500 | blackbox.com Page 15
LGC120A-R2 Rev. 1 56-80630BB-00 Rev. C2
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