Black Box LBH1500A User manual

© Copyright 2005. Black Box Corporation. All rights reserved.
1000 PARK DRIVE • LAWRENCE, PA 15055-1018 • 724-746-5500 • FAX [phone]
July 2005
LBH1500A-R3
Black Box LH1500 LBH1500AE-R3
LBH1501A-R3
LBH1501AE-R3
Fast Ethernet Media Converters
Media Converter
100 Mb/s
LINK PWR LINK
RX
TX
BLACK BOX
Crossover
[phone]
Media Converter
100 Mb/s
LINK PWR LINK
RX
TX
BLACK BOX
Crossover
[phone]

Black Box LH1500 Media Converters Installation and User Guide (08/05)
Black Box LH1500 Media Converters
Installation and User Guide
Trademarks
UL is a registered trademark of Underwriters Laboratories
Ethernet is a trademark of Xerox Corporation
All applied-for and registered trademarks are the property of their respective owners
Important: Black Box LH1500 Media Converters contain no user serviceable
parts. Attempted service by unauthorized personnel shall render any and all
warranties null and void. If problems are experienced with a Black Box
LH1500 Media Converter, consult Section 5, Troubleshooting, of this User
Guide.
©2005 Black Box Corporation

Black Box LH1500 Media Converters Installation and User Guide (08/05)
Contacting Black Box
Please use the mailing address and phone and fax numbers listed below:
Black Box Corporation
P.O. Box 12800
Pittsburgh, PA 15241
Phone: [phone]
Fax: [phone]

Black Box LH1500 Media Converters Installation and User Guide (08/05)
FCC STATEMENT
FEDERAL COMMUNICATIONS COMMISSION &
CANADIAN DEPARTMENT OF COMMUNICATIONS
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy and if not installed and used
properly, that is, in strict accordance with the communication. It has been tested and found to
comply with the limits for a Class A computing device in accordance with the specifications in
Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection against such
interference when the equipment is operated in a commercial environment. Operation of this
equipment in a residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.

Black Box LH1500 Media Converters Installation and User Guide (08/05)
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 the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de classe A prescrites dans le Règlement sur le brouillage
radioélectrique publé par le ministère des Communications du Canada.
__________________________________________________________
NORMAS OFICIALES MEXICANAS (NOM)
ELECTRICAL SAFETY STATEMENT
INSTRUCCIONES DE SEGURIDAD
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato
eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberan ser guardadas para referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser
respetadas.

Black Box LH1500 Media Converters Installation and User Guide (08/05)
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca de la tina de baño,
lavabo, sótano mojado o cerca de una alberca, etc..
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean
reconnendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recommendado por el
fabricante.
8. Servicio—El usuario no debe intentar dar sercicio al equipo eléctrico más allá a lo descrito en
las instrucciones de operatión. Todo otro servicio deberá ser referido a personal de servicio
calificado.
9. El aparato eléctrico debe ser situado de tal mannera que su posición no interfiera su uso. La
colocación del aparato eléctrico sobre una cama, sofá, alfombra o superficie similar puede
bloquea la ventilación, no se debe colocar en libreros o gabinetes que impidan el flujo de aire
por los orificios de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance du fuentes de calor como radiadores,
registros de calor, estufas u otros aparatos (incluyendo amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado una fuente de poder sólo del tipo descrito en el
instrucivo de operación, o como se indique en el aparato.
12. Precaución debe ser tomada de mal manera que la tierra fisica y la polarización del equipo no
sea eliminada.

Black Box LH1500 Media Converters Installation and User Guide (08/05)
13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni
pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los
contactos y receptáculos donde salen del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recommendaciones del
fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo
periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la
cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su desempeño;o
E: El aparato ha sido tirado o su cubierta ha sido dañada.

Black Box LH1500 Media Converters Installation and User Guide (08/05)
TABLE OF CONTENTS Page
1.0 SPECIFICATIONS.................................................................................... 1
1.1. Technical Specifications *............................................................................ 1
1.2. Model numbers and product descriptions *.................................................. 5
2.0 INTRODUCTION ..................................................................................... 7
2.1 Inspecting the Package and Product............................................................... 7
2.2 Product Description *.................................................................................... 9
2.3 Features and Benefits ................................................................................... 13
2.4 Applications ................................................................................................. 15
3.0 INSTALLATION .................................................................................... 18
3.1 Locating the Media Converter Unit*............................................................ 18
3.2 Calculating Overall Segment Distance....................................................... 19
3.2.1 Segment Distances, Full-Duplex ...................................................... 19
3.2.2 Segment Distances, Half-Duplex...................................................... 24
3.3 Connecting Fast Ethernet Media.................................................................. 33
3.3.1 Connecting Twisted Pair (RJ-45, TX).............................................. 33
3.3.2 Connecting Fiber-FX (SC-type “Snap-In”, and ST, "Twist-Lock") . 34

Black Box LH1500 Media Converters Installation and User Guide (08/05)
TABLE OF CONTENTS (CONTINUED) Page
3.3.3 Power Budget Calculations for Fiber media *.................................. 37
4.0 OPERATION........................................................................................... 39
4.1 Power requirements, power supply types *.................................................. 39
4.2 Front Panel LEDs - Black Box LH1500’s.................................................. 40
4.3 Up-Link Switch on TX port ......................................................................... 40
5.0 TROUBLESHOOTING........................................................................... 42
5.1 Before Calling for Assistance....................................................................... 42
5.2 When Calling for Assistance........................................................................ 44
5.4 Shipping and Packaging Information ......................................................... 45
* Changed in this revision
08/05 Added Power Budget Calculation for Fiber media.
05/99 (changed power supplies from a single model to separate models each
for 115vac 60Hz, and 230vac 50Hz).

Black Box LH1500 Media Converters Installation and User Guide (08/05)
1
1.0 SPECIFICATIONS
1.1. Technical Specifications
Performance:
Data Rate: 100 Mb/s
Half- or Full-Duplex, auto-sensing
800ns (80 bit-times) Path Delay Value (PDV) for conversion delay
Network Standards:
Fast Ethernet IEEE 802.3u: 100BASE-TX, 100BASE-FX
(Black Box LH1500 Media Converters are physical layer standard Fast
Ethernet products, and operate independently of all software.)

Black Box LH1500 Media Converters Installation and User Guide (08/05)
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Number of Media Converters in series:
Experience shows that up to three units can be used in series between
repeaters. For 4 or more in series, noise build-up will typically preclude
proper operation.
Maximum Standard Fast Ethernet Segment Lengths:
100BASE-TX (twisted pair): 100 m (328 ft)
100BASE-FX Fiber optic, half-duplex: (multi-mode) 412 m (1350 ft)
100BASE-FX Fiber optic, full duplex: (multi-mode) 2.0 km (6,562 ft)
100BASE-FX Fiber optic, half-duplex: (single-mode) 412 m (1350 ft)
100BASE-FX Fiber optic, full duplex: (single-mode) 15.0 km (49,215 ft)
Note: Black Box LH1500 Media Converters DO NOT support full length
shared Fast Ethernet segments. See Section 3.2 of this manual for
media lengths and shared segment distance calculations.

Black Box LH1500 Media Converters Installation and User Guide (08/05)
3
Operating Environment:
Ambient Temperature: 32ºF to 122ºF (0ºC to 50ºC)
Storage Temperature: -20ºC to 60ºC
Ambient Relative Humidity: 10% to 95% (non-condensing)
Power Supply (External):
Power Input: 95-125 vac at 60Hz for “LH1500A-SC-R2, LH1500A-ST-
R2, LH1501A-R2” Models
200-250 vac at 50Hz (or auto-ranging) for “LH1500AE-
SC-R2, LH1500AE-ST-R2, LH1501AE-R2” Models
Power Consumption: 5 watts max. for the unit
Power output: +5VDC / 1000ma DO NOT USE A 12VDC P.S. UNIT
Connectors:
RJ-45 Port: Modular 8-Pin female, with MDI-X up-link switch
Multi-mode:

Black Box LH1500 Media Converters Installation and User Guide (08/05)
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Fiber Port, SC-type (snap-in): Fiber optic multi-mode, 100BASE-FX
Fiber Port, ST-type (twist-lock): Fiber optic multi-mode, 100BASE-FX
Single-mode:
Fiber Port, SC-type (snap-in): Fiber optic single-mode, 100BASE-FX
Packaging:
Enclosure: High strength sheet metal.
Dimensions: 3.0 in H x 3.5 in W x 1.0 in D (7.6 cm x 8.9 cm x 2.5 cm)
Power Supply: 3.8 in x 1.5 in x 2 in (9.7 cm x 3.8 cm x 5.1 cm)
Weight: 9.5 oz. (275 gr); Power Supply 5.85 oz (166 gr)

Black Box LH1500 Media Converters Installation and User Guide (08/05)
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LED Indicators for the Black Box LH1500’s and LH1501’s:
LED TX port FX port Description
PWR Indicates unit is receiving DC power.
LINK TP Fiber Steady ON when proper link is established
at both ends of the media segment, i.e.,
when both end’s connections are properly
made and when power is applied to the
devices on both ends of the segment.
Agency Approvals:
Power Supply is UL Listed (UL 1310), cUL
Emissions: Meets FCC Part 15 Class A, cUL
Made in USA

Black Box LH1500 Media Converters Installation and User Guide (08/05)
1.2 Model Number Description
LH1500A-SC-R3 Twisted pair to mm fiber SC, ext. 115 vac, 60Hz power supply
LH1500AE-SC-R3 Twisted pair to mm fiber SC, ext. 230 vac, 50Hz power supply
LH1500A-ST-R3 Twisted pair to mm fiber ST, ext. 115 vac, 60Hz power supply
LH1500AE-ST-R3 Twisted pair to mm fiber ST, ext. 230 vac, 50Hz power supply
Single-mode:
LH1501A-R3 Twisted pair to fiber SC, single mode, ext. 115 vac, 60 Hz PS
LH1501AE-R3 Twisted pair to fiber SC, single mode, ext. 230 vac, 50 Hz PS
6

Black Box LH1500 Media Converters Installation and User Guide (08/05)
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2.0 INTRODUCTION
This section describes the Black Box LH1500’s and LH1501’s Media
Converters, including appearance, features and possible applications.
2.1 Inspecting the Package and Product
Examine the shipping container for obvious damage prior to installing this
product; notify the carrier of any damage which you believe occurred during shipment or
delivery. Inspect the contents of this package for any signs of damage and ensure that
the items listed below are included.
This package should contain:
1 Black Box LH1500 Media Converter unit
1 External Power Supply, either 115 vac at 60Hz or 230 vac at 50Hz.
(Continued)

Black Box LH1500 Media Converters Installation and User Guide (08/05)
1 Set of two (2) metal mounting clips with screws
1 Velcro®Tape section, approximately 3 inches in length
Remove the Black Box LH1500 Media Converter from the shipping container.
Be sure to keep the shipping container should you need to ship the unit at a later date.
In the event there are items missing or damaged contact your supplier. If you
need to return the unit use the original shipping container. Refer to Section 5,
Troubleshooting, for specific return procedures.
Use the power supply provided, which has output at 5VDC only.
USE OF A 12VDC POWER SUPPLY WILL DAMAGE THE UNIT
8

Black Box LH1500 Media Converters Installation and User Guide (08/05)
9
2.2 Product Description
Black Box LH1500 Media Converters offer a convenient and graceful way to
convert and transmit data among twisted pair and fiber network cabling environments.
They allow the use of fiber media with full-duplex devices such as Fast Ethernet
Switching Hubs, and may sometimes be used with shared (half-duplex) Fast Ethernet
segments as well. They offer a compact, cost-effective way to adapt a pre-existing
Ethernet cabling configuration as network requirements change.
Black Box LH1500 Media Converters are designed for quick and easy
installation even in very tight spaces. Media cables are easily attached. Black Box
LH1500 Media Converters feature an up-link switch on the TX port to eliminate the need
for a special cross-over cable when connecting the TX port to a hub or concentrator.
Because of their compact size, Black Box Media Converters can be Velcro®-mounted on
an office wall or the side of a desk or cabinet. The external power supply plugs into a

Black Box LH1500 Media Converters Installation and User Guide (08/05)
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nearby AC wall socket or power strip. Each converter features a full set of LEDs that
convey essential diagnostic and status information. See Section 4.1, LED Indicators, for
specific LED function information.
Black Box LH1500 Media Converters are designed to provide low-temperature
operation over an extended period to make them some of the most reliable in the
industry. Their high-strength fabricated metal packaging shields against Radio
Frequency Interference (RFI) and Electromagnetic Interference (EMI), avoiding
interference with other nearby electronic devices.
The Black Box LH1500 units comply with the IEEE 802.3u (100BASE-TX
and 100BASE-FX) specification for 100 Mb/sec traffic via shielded (STP) or unshielded
twisted pair (UTP) segments.

Black Box LH1500 Media Converters Installation and User Guide (08/05)
The Black Box LH1500A-ST is equipped with one fiber-ST and one RJ-45
connector for connection to 100BASE-FX compliant networks segments.
An LH1500A-ST-R2 integrates 100BASE-TX and FX networks, with fiber ST
connectors.
Twisted Pair
(100BASE-TX) Fiber Multimode
(ST-type)
LINK
LINK PWR
Black Box LH1500
Media Converter
100 Mb/s
UP LINK
(100BASE-FX)
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