Black Box Stackable MiniHub Bedienungsanleitung
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
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
Stackable MiniHub
Stackable MiniHub
Ports 12345678
Stack Enable
LINK/TX
8
7
6
5
4
3
2
1
PORTS
PWR
COL
POL/TX
UP LINK
Off
IRB1 IRB2 On
PWR
12VDC, 1A
JUNE 2001
LE2801A
LE2801AE
LE2801A-BNC
LE2801AE-BNC
LE2801A-FO
LE2801AE-FO
FEDERAL COMMUNICATIONS COMMISSION
AND INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENT
Class B Digital Device. This equipment has been tested and found to comply with the
limits for a Class B 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 B certified device.
This digital apparatus does not exceed the Class B 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 classe B prescrites dans le Règlement sur le brouillage
radioélectrique publié par Industrie Canada.
FCC AND IC STATEMENTS
STACKABLE MINIHUB
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 parato 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.
NOM STATEMENT, TRADEMARKS
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.
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 equio 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.
TRADEMARKS USED IN THIS MANUAL
Velcro®is a registered trademark of Velcro USA.
Any other trademarks mentioned in this manual are acknowledged to be the property
of the trademark owners.
STACKABLE MINIHUB
Contents
Chapter Page
1. Specifications ............................................................................................... 1
2. Introduction ................................................................................................. 3
2.1 General Overview .................................................................................. 3
2.2 Features and Benefits ........................................................................... 5
2.3 Applications ........................................................................................... 7
3. Installation .................................................................................................... 9
3.1 Before You Install: The Complete Package ......................................... 9
3.2 The Installation Procedure .................................................................. 9
3.3 Stacking the MiniHubs .........................................................................12
3.4 Cascading ............................................................................................ 16
3.5 BNC Connection (LE2801A-BNC, LE2801AE-BNC only) .................17
3.6 Fiberoptic Connection (LE2801A-FO, LE2801AE-FO only)..............17
4. Operation ................................................................................................... 19
4.1 LED Indicators .................................................................................... 19
4.2 Operating Features ............................................................................. 19
5. Troubleshooting ........................................................................................ 20
5.1 Things to Check .................................................................................. 20
5.2 Calling Black Box ................................................................................ 21
5.3 Shipping and Packaging ..................................................................... 21
1
CHAPTER 1: Specifications
Compliance — FCC Part 15 Class A and B, IC Class/classe B,
VDE Class B
Standard — IEEE 802.3 Ethernet v. 1.0/2.0
Interface — LE2801A, LE2801AE: 10BASE-T; LE2801A-BNC,
LE2801AE-BNC: 10BASE2; LE2801A-FO,
LE2801AE-FO: 10BASE-FL
Data Rate — 10 Mbps
Partitioning — Automatic after 32 consecutive collisions
Reconnection — Occurs after 512 bits of error-free transmission
Maximum
Segment Length — UTP (unshielded 10BASE-T): 100 m (328 ft.);
STP (shielded 10BASE-T): 150 m (492 ft.);
AUI drop cable: 50 m (164 ft,);
10BASE2 ThinNet (BNC): 185 m (607 ft.);
10BASE5: 500 m (1,640 ft.);
10BASE-FL multi-mode fiberoptic: 2 km (6562 ft.)
User Controls — Rear-mounted slide switch for straight-through vs.
crossover (uplink) operation on port 8
Stackable switch to specify which hub is at the base
of the stack
Indicators — (19) Front-mounted recessed LEDs:
(1) Power; (9) Link/TX (1 for each port);
(9) Pol/RX
(1 for each port)
1. Specifications
2
STACKABLE MINIHUB
Connectors — LE2801A, LE2801AE: (8) front-mounted shielded-
type RJ-45 female; (1) rear-mounted DB15 female
AUI port; LE2801A-BNC, LE2801AE-BNC: same
as LE2801A, plus (1) rear-mounted BNC with
internal termination switch; LE2801A-FO,
LE2801AE-FO: same as LE2801A, plus one rear
fiber ST connector
Leads/Signals
Supported — Pins 1, 2, 3, and 6
Enclosure — High-strength steel
Cooling Method — Convection
Operating
Temperature — 32 to 122˚ F (0 to 50˚ C)
Storage
Temperature — –4 to 140˚ F (–20 to 60˚ C)
Humidity — 10 to 95% noncondensing
Power — From wallmount power supply:
LE2801A, LE2801A-BNC, LE2801A-FO:
Input: 120 VAC, 60 Hz;
LE2801AE, LE2801AE-BNC, LE2801AE-FO:
Input: 230 VAC, 50 Hz;
All models: Output: 12 VDC, 1 amp;
All models: Consumption: 10 watts maximum
Size — 0.8"H x 5"W x 4.4"D (1.9 x 12.7 x 11.2 cm)
Weight — Net: 1.3 lb. (0.6 kg);
Net plus power supply: 2.3 lb. (1.05 kg)
3
CHAPTER 2: Introduction
2.1 General Overview
The Stackable MiniHub is a workplace hub in a very compact package.
It is simple to install and use in an office or lab environment, requiring no
special rack cabinets or wiring-closet apparatus. It is a standard physical-layer
Ethernet product and operates independently of all software.
Stackable MiniHubs provide a simple and inexpensive solution for
networking a personal multi-system office using 10BASE-T twisted-pair
cabling. They can expand from an eight-port hub up to 40 ports.
Six models are available:
• LE2801A, LE2801AE: Basic model, has eight shielded twisted-pair ports
in the front and an AUI port in the rear. LE2801A has a 120-VAC power
supply, LE2801AE has a 230-VAC power supply.
• LE2801A-BNC, LE2801AE-BNC: Same as LE2801A, but has one
additional BNC port in the rear.
• LE2801A-FO, LE2801AE-FO: Same as LE2801A, but has one additional
fiber-ST port in the rear.
Stackable MiniHubs are also well suited for small-to-medium-size office or
lab environments (two to 40 users) that need an independent Ethernet
network. They operate as self-sufficient units to provide 10BASE-T Ethernet
connectivity for local users and devices. Small independent networks built
using the Stackable MiniHubs are easily expanded by taking advantage of the
MiniHubs’ stacking ability.
The small size of the Stackable MiniHubs make them very useful for
demonstration situations in conference rooms and in exhibitions where a
temporary or expansion network is needed. The MiniHubs are also handy as a
piece of test equipment that can be easily inserted into the network to provide
a test port, and then removed after the testing is done. They take up minimal
space and use minimal power, and are rugged enough to be carried in a coat
pocket for emergencies.
Stackable MiniHubs fit easily into the workplace environment. They can
be table-top- or shelf-mounted, or you can use the included Velcro®strip to
mount MiniHubs on walls or on the back or side of a desk or cabinet. All of
the wiring connectors are in the same plane so that wiring space is neat and
minimal. The external power supply conveniently plugs into any available AC
wall receptacle or power strip.
2. Introduction
4
STACKABLE MINIHUB
The Stackable MiniHub’s RJ-45 ports support connection of up to eight
workstations or other network devices over full-length 10BASE-T cable
segments. Stackable MiniHubs fully comply with the IEEE 802.3 specification
for repeater functionality: They perform signal amplification, retiming of data
packets, and regeneration of preamble bits for each packet received. They will
also detect collisions, extend collision fragments, and automatically partition
and reconnect individual ports in order to keep problems on one segment
from causing downtime elsewhere on the network.
Stackable MiniHubs have LINK and RX LEDs for each front-panel RJ-45
port, located above the corresponding ports (see the illustration below); one
LED to the left of the LINK LED for (and located above) the rear-panel AUI
port, and one LED for AC power, located at the rear above the external
power-supply connection. This makes observing the operation and status
of the ports easy.
Figure 2-1. Front Panel of the Stackable MiniHub.
The included external wallmount power supply uses AC input power of
120 VAC/60 Hz (A models) or 230 VAC/50 Hz (AE models). Its lightweight
cord carries DC power to the barrel-type power jack on the rear panel (shown
in Figure 2-2) of the MiniHub.
5
CHAPTER 2: Introduction
Figure 2-2. Rear Panel of the Stackable MiniHub.
2.2 Features and Benefits
•Interconnectability with Existing Ethernet Networks
Your Stackable MiniHub has a manual Up-Link switch that you can use to
cross the pinning of its 8th port. In this setting, you can connect 10BASE-
T cable from an existing Ethernet environment (such as the central hub
for the building) to the MiniHub’s 8th port.
•Interoperability with Other Ethernet Devices
Stackable MiniHubs are completely interoperable with other Ethernet-
compliant network devices. Each is fully compliant with IEEE 802.3
specifications for 10-Mbps CSMA/CD operation. This allows Stackable
MiniHubs to be integrated into any standard Ethernet network.
•Installation Versatility
You can easily install Stackable MiniHubs in almost any office or lab
location. The tiny package is very unobtrusive and is typically mounted
with Velcro.
•Robust Network Operation
Stackable MiniHubs use the “star” network topology and have automatic
per-port partitioning and reconnection. A fault on one segment is isolated
from the rest of the network, avoiding most network downtime.
Dieses Handbuch passt für folgende Modelle
6
Inhaltsverzeichnis
Andere Black Box Schalten Handbücher
Black Box
Black Box AVS-HDMI2-8X8 Bedienungsanleitung
Black Box
Black Box LGB2003A-R2 Bedienungsanleitung
Black Box
Black Box LE2750A Bedienungsanleitung
Black Box
Black Box KV130A Bedienungsanleitung
Black Box
Black Box LB5953A Bedienungsanleitung
Black Box
Black Box LPB5028A Bedienungsanleitung
Black Box
Black Box INVISAPC DTX1002-R Bedienungsanleitung
Black Box
Black Box ServSwitch DTX5000 Bedienungsanleitung
Black Box
Black Box KV404A Bedienungsanleitung
Black Box
Black Box KV7118SA Bedienungsanleitung
Black Box
Black Box LB9017A-R2 Bedienungsanleitung
Black Box
Black Box AVSW-DVI8X1 Bedienungsanleitung
Black Box
Black Box PSE544 Bedienungsanleitung
Black Box
Black Box SW681A Bedienungsanleitung
Black Box
Black Box EMS10G12 Bedienungsanleitung
Black Box
Black Box AVSC-HDMI2-8X2 Bedienungsanleitung
Black Box
Black Box KV9632A Bedienungsanleitung
Black Box
Black Box LB9020A-R2 Bedienungsanleitung
Black Box
Black Box EMS10G-28 Handbuch
Black Box
Black Box LE2690A Bedienungsanleitung
