Black Box LB9801A User manual

CUSTOMER
SUPPORT
INFORMATION
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 [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
OCTOBER 1997
LB9801A
LB9802A
LB9803A
LB9804A
Two Port 10/100 Ethernet Switch
1
10/100
H/F
A/M
RX
LINK
COL/FD
100
2
10/100
H/F
A/M
RX
LINK
COL/FD
100
Two Port 10/100 Ethernet Switch
1
H/F
RX
LINK
COL/FD
2
10/100
H/F
A/M
RX
LINK
COL/FD
100
TX RX
Two-Port 10/100 Ethernet Switches
Dual 10/100 UTP Port
10/100 UTP Port with (1) 100BASE-FX Port

1
FCC STATEMENT
FEDERAL COMMUNICATIONS COMMISSION
AND
INDUSTRY CANADA
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 manufacturer’s
instructions, may cause interference to radio 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.
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.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.

2
TWO-PORT 10/100 ETHERNET SWITCHES
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 deberán ser guardadas para
referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de
operación deben ser respetadas.
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 recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea
recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá
a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser
referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera 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 de fuentes de calor
como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del
tipo descrito en el instructivo de operación, o como se indique en el aparato.

3
NOM STATEMENT
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización
del equipo no sea eliminada.
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
recomendaciones 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.

4
TWO-PORT 10/100 ETHERNET SWITCHES
TRADEMARKS USED IN THIS MANUAL
UL is a registered trademark of Underwriters Laboratories Incorporated.
Any other trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.

5
CE MARK
CE MARK
The CE mark symbolizes compliance with the European Community’s EMC
directive. The Two-Port 10/100 Ethernet Switches meet or exceed these
technical standards:
• EN 55022 — “Limits and Methods of Measurement of Radio
Interference Characteristics of Information
Technology Equipment”
• EN 50082-1 — “Electromagnetic compatibility—Generic immunity
standard Part 1: Residential, commercial and
light industry”
• IEC 801-2 — “Electromagnetic compatibility for industrial-process
measurement and control equipment Part 2:
Electrostatic discharge requirements”—Severity level 3
• IEC 801-3 — “Electromagnetic compatibility for industrial-process
measurement and control equipment Part 3: Radiated
electromagnetic field requirements”—Severity level 2
• IEC 801-4 — “Electromagnetic compatibility for industrial-process
measurement and control equipment Part 4: Electrical
fast transient/burst requirements”—Severity level 2
• CISPR 22 — Radiated and Line-conducted Class A
• EN 60950 — ITE Safety

6
TWO-PORT 10/100 ETHERNET SWITCHES
Contents
Chapter Page
1. Specifications ..................................................................................................7
2. Introduction....................................................................................................9
2.1 Description............................................................................................9
2.2 Features ................................................................................................9
3. Applications ..................................................................................................10
4. Installation and Setup ..................................................................................11
4.1 Front Panels ........................................................................................11
4.2 LEDs ....................................................................................................12
4.3 DIP Switches........................................................................................12
4.4 Copper Port ........................................................................................13
4.5 Fiber Port ............................................................................................14
5. Troubleshooting ..........................................................................................15
5.1 Problems..............................................................................................15
5.2 Calling Black Box................................................................................16
5.3 Shipping and Packaging ....................................................................16

7
CHAPTER 1: Specifications
1. Specifications
Speed — 10/100 Mbps
Duplex Support — Half and full
Compatibility — IEEE 802.3; IEEE 802.3u (Fast Ethernet
standard)
Connectors — LB9801A: (2) RJ-45 10/100 autosensing;
LB9802A: (1) RJ-45 10/100 autosensing,
(1) fiber for multimode; LB9803A–04A:
(1) RJ-45 10/100 autosensing, (1) fiber
for single mode
Diagnostics — LINK (Green): ON when another 10BASE-
T hub or NIC is connected to the port;
RX (Green): ON indicates receive data
from a connected hub or NIC card;
COL/FD: Yellow, port is in a collision
state; Green, port is configured for full-
duplex communication; 100 (UTP)
[Green]: ON indicates port configured for
100 Mbps
Standards Compliance — UL®1950; CSA 22.2 No 950; VCCI;
FCC Part 15, Class A; CE EN 60950
Mounting — 19" rack mounting for up to 2 units
Operating Temperature — 32 to 104°F (0 to 40°C)
Storage Temperature — 14 to 122°F (-10 to +50°C)
Humidity — Up to 85% maximum, noncondensing
Power — 100–240 VAC, 50–60 Hz, 1 amp maximum
at 220V
Size — 1.8"H x 8"W x 10"D (4.6 x 20.3 x 25.4 cm)
Weight — 2.3 lb. (1 kg)

8
TWO-PORT 10/100 ETHERNET SWITCHES
Optical — LB9802A LB9803A LB9804A
Distances (km) 0 to 2 0 to 18 17 to 40
Fiber Mode MM SM SM
Fiber Attenuation (dB) 3 0.4 0.4
Output Power Range (dBm) -19 to -14 -19 to -14 -10 to -7
Receiver Sensitivity (dBm) -30 -30 -30
Receiver Saturation (dBm) -14 -14 -14
Optical Power Budget (dB) 11 to 16 11 to 16 20 to 23

9
CHAPTER 2: Introduction
2. Introduction
2.1 Description
The Two-Port 10/100 Ethernet Switches are standalone, dual-port Ethernet-
to-Fast-Ethernet switches. In addition to enabling 10/100-Mbps and 100/100-
Mbps switching, the Switches can also extend the diameter of Fast Ethernet
networks up to 100 km.
The Two-Port 10/100 Ethernet Switch is available in both a UTP and a
fiberoptic version. Each copper port on the Two-Port 10/100 Ethernet Switch
offers IEEE standard NWay auto-negotiation and is configurable for either
half-duplex (for a 100-Mbps shared connection) or full-duplex (for a 200-
Mbps point-to-point collision-free connection). Each fiber port is
configurable for only a 100-Mbps half-/full-duplex connection.
The Two-Port 10/100 Ethernet Switch uses self-learning of network addresses,
and filters local traffic, collisions and error packets.
2.2 Features
• Complies with IEEE 802.3 and IEEE 802.3u standards.
• Uses UTP, multimode, or single-mode DSC connectors.
• Up to 110 km over single-mode fiber.
• Full-/half-duplex operation on all ports and speeds.
• NWay auto-negotiation for automatic speed and duplex configuration
(UTP only).
• Plug-and-play installation and support for all network operating systems
and protocols.
• Status LEDs indicate switch operations for easy maintenance.

10
TWO-PORT 10/100 ETHERNET SWITCHES
3. Applications
Figures 3-1 and 3-2 illustrate some of the Switch’s application possibilities.
Connections can include 10-Mbps and 100-Mbps servers, a Fast Ethernet
backbone, 10/100-Mbps hubs or individual stations, all functioning in half-
/full-duplex mode. The medium can be either 10BASE-T/100BASE-TX UTP
or 100BASE-FX fiber. The various fiber modules offer distance extensions in
a 2-km to 110-km range (1.2 to 68.4 miles).
Figure 3-1. LB9801A.
Figure 3-2. LB9802A, LB9803A, or LB9804A.
10-Mbps Workstations 100-Mbps Workstations
10-Mbps Hub 100-Mbps Switch
Half-Duplex
100 Mbps
10 Mbps
LB9801A
10-Mbps Workstations 100-Mbps Workstations
10-Mbps Switch with
fiber uplink port
100-Mbps Hub
Full-Duplex
100 Mbps
Half-Duplex
200 Mbps up to 200 km
LB9802A, LB9803A, or
LB9804A

11
CHAPTER 4: Installation and Setup
4. Installation and Setup
Two-Port 10/100 Ethernet Switches are standalone units designed for 19"
rack mounting. LED indicators help with installation and maintenance.
Figures 4-1 and 4-2 show the front panels of the different models.
4.1 Front Panels
Figure 4-1. Front panel—LB9801A.
Figure 4-2. Front panel—LB9802A, LB9803A, and LB9804A.
1
RX LINK COL/FD
H/F
2
RX LINK COL/FD 100
H/F 10/100 A/M
123456
RXTX
1
RX LINK COL/FD 100
H/F 10/100 A/M
2
RX LINK COL/FD 100
H/F 10/100 A/M
123

12
TWO-PORT 10/100 ETHERNET SWITCHES
4.2 LEDs
Group 1 Right of UTP port (2); 10/100BASE-TX port LEDs
RX Data is being received from a connected hub or NIC card.
LINK Indicates connection to another switch, a hub, or a NIC.
COL/FD Bi-color LED. Yellow: port is in collision state. Green: port is
configured for full-duplex communication.
100 Port is configured for 100 Mbps (UTP connection only).
Group 4 Right of fiberoptic port (5); 100BASE-FX port LEDs
These LEDs have the same functions as the Group 1 LEDs with the same
names.
4.3 DIP Switches
The DIP switches change port configuration only during power-up.
In order to work in a fixed-rate mode, A/M (auto-negotiation/manual) must
be set to UP. Then set H/F (Duplex) and 10/100 (Rate) to 10 half-, 10 full-,
100 half-, or 100 full-duplex modes.
To work in auto-negotiation mode, A/M must be set to DOWN. Then H/F
can be set to the desired duplex mode (half/full).

13
CHAPTER 4: Installation and Setup
4.4 Copper Port
Figure 4-3. Copper port default configuration:
100 half-duplex mode.
Group 3
H/F 10/100 A/M
Duplex Rate Auto/Manual
UP Full 100 Manual
DOWN Half 10 AutoNeg
H/F 10/100 A/M

14
TWO-PORT 10/100 ETHERNET SWITCHES
4.5 Fiber Port
Figure 4-4. Fiber port default configuration:
100 half-duplex mode.
Group 6
H/F
Duplex
UP Full
DOWN Half
WARNING
Activating both auto-negotiation and full-duplex modes of operation is
not defined by the IEEE 802.3u standard and may lead to unpredictable
results.
H/F

15
CHAPTER 5: Troubleshooting
5. Troubleshooting
The Two-Port 10/100 Ethernet Switches are highly reliable. However,
if a problem occurs, follow the steps below.
5.1 Problems
1) Symptom: None of the LEDs light or blink.
Cause: The Switch isn’t getting power or isn’t working properly.
Action: First, make sure the power cord is plugged in firmly.
Make sure the outlet works. If the cord and outlet are
fine, call Black Box about getting a replacement Switch.
2) Symptom: The LINK LED does not light when…
Copper Port
a) …the port is configured through DIP switches for 10 Mbps, no
auto-negotiation, with a connection to a 10-Mbps PC adapter.
b) …the port is configured through DIP switches for 100 Mbps,
no auto-negotiation, with a connection to a 100-Mbps PC
adapter.
c) …the port is configured through DIP switches for 10 Mbps,
no auto-negotiation, with a connection to a 10-Mbps hub.
d) …the port is configured through DIP switches for 100 Mbps,
no auto-negotiation, with a connection to a 100-Mbps hub.
Cause: For a) and b), cable is not crossed or not connected
securely.
For c) and d), cable is crossed or not connected securely.
Action: Check cable connections in all four cases.
Fiber Port
…the Two-Port 10/100 Ethernet Switch’s port is connected
to the fiberoptic port of any 100-Mbps hub or switch.
Cause: a) Fiberoptic cable is not connected securely.
b) The Two-Port 10/100 Ethernet Switch is defective.
Action: a) Check cable connections.
b) Replace the Two-Port 10/100 Ethernet Switch.
3) Symptom: Copper port is configured through DIP switches to
100 Mbps, half-/full-duplex; 100 LED does not light.
Cause: LED isn’t working properly.
Action: Call Black Box about getting a replacement Switch.

16
TWO-PORT 10/100 ETHERNET SWITCHES
4) Symptom: COL/FD LED does not light Green when the copper/fiber
port is configured through DIP switches to full-duplex
(with/without auto-negotiation).
Cause: LED isn’t working properly.
Action: Call Black Box about getting a replacement Switch.
5.2 Calling Black Box
If you determine that your Two-Port 10/100 Ethernet Switch is
malfunctioning, do not attempt to alter or repair the unit. It contains no user-
serviceable parts. Contact Black Box at [phone].
Before you do, make a record of the history of the problem. We will be able to
provide more efficient and accurate assistance if you have a complete
description, including:
• the nature and duration of the problem.
• when the problem occurs.
• the components involved in the problem.
• any particular application that, when used, appears to create the problem
or make it worse.
5.3 Shipping and Packaging
If you need to transport or ship your Two-Port 10/100 Ethernet Switch:
• Package it carefully. We recommend that you use the original container.
• If you are shipping the Two-Port 10/100 Ethernet Switch for repair, make
sure you include everything that came in the original package. Before you
ship, contact Black Box to get a Return Materials Authorization (RMA)
number.

17
NOTES

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax [phone]
© Copyright 1997. Black Box Corporation. All rights reserved.