Black Box 10BASE-T MiniHub Manuale utente

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

Web site: www.blackbox.com • E-mail: [email protected]

SEPTEMBER 1995

LE2601A

10BASE-T MiniHub

LINK

PORT

10BASE-T MiniHub

1234

AUI

PWR

5678

UP LINK

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 IndustryCanada.

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 publié par Industrie Canada.

TRADEMARKS

UL®is a registered trademark of Underwriters Laboratories, Incorporated.

Velcro®is a registered trademark of Velcro USA, Inc.

Any other trademarks mentioned in this manual are acknowledged to be the property

of the trademark owners.

INSTRUCCIONES DE SEGURIDAD

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.

INSTRUCCIONES DE SEGURIDAD

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 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.

10BASE-T MINIHUB

Contents

Chapter Page

1. Specifications.....................................................................................................7

2. Introduction ......................................................................................................8

2.1 Inspecting the Package and Product.....................................................8

2.2 Description..............................................................................................8

2.3 Features and Benefits ...........................................................................10

3. Installation.......................................................................................................12

3.1 Table-Top or Shelf Mounting..............................................................12

3.2 Wall (or Vertical Surface) Mounting ..................................................12

3.3 Twisted Pair Segment Connection ......................................................15

3.4 Up-Link Option on Port #8 (Up-Link Switch) ...................................16

4. Operation ........................................................................................................17

5. Troubleshooting..............................................................................................18

5.1 Before Calling for Assistance ...............................................................18

5.2 When Calling for Assistance ................................................................18

5.3 Return Material Authorization (RMA) Procedure.............................19

5.4 Shipping and Packaging Information.................................................19

CHAPTER 1: Specifications

1. Specifications

Maximum Ethernet Segment

Lengths — UTP (Unshielded

10BASE-T): 328 ft. (100 m);

STP (Shielded 10BASE-T):

492 ft. (150 m)

Operating Environment — Ambient

Temperature: 32 to 122°F

(0 to 50°C);

Storage Temperature: -4 to 140°F

(-20 to 60°C)

Power — Powered from AUI

interface of Ethernet device

connected to AUI on hub

Size — 0.8"H x 5.0"W x 4.4"D

(1.9 x 12.7 x 11.2 cm)

Weight — 1 lb. (0.45 kg)

Standards — Ethernet V2.0, IEEE

802.3: 10BASE-T

(the Hub is a physical-layer

standard Ethernet product and

operates independently of all

software)

Connectors — (7) RJ-45 female:

(6) station ports, (1) switch-

selectable uplink/station port,

(1) DB15 male AUI port

Indicators — (17) LEDs: (8) LINK,

(8) RX, (1) PWR

Switches — (1) uplink switch on side

of unit

Performance — Data Rate: 10 Mbps,

Partitioning: Enforced after 32

consecutive collisions;

Reconnect: Occurs after 512

bits error-free transmission

10BASE-T MINIHUB

2. Introduction

2.2 Description

The 10BASE-T MiniHub is an 8-port

10BASE-T workplace hub in a very

compact package. It is powered from

the AUI of an Ethernet device, not

an AC supply, although an optional

one is available. It is simple to install

and use in an office or lab environ-

ment, requiring no special rack

cabinets or wiring-closet apparatus.

The MiniHub is a standard physical-

layer Ethernet product and operates

independently of all software.

The 10BASE-T MiniHub is also

well-suited for small-to-medium sized

office or lab environments (up to 9

persons) that need an independent

Ethernet network. Small indepen-

dent networks built using the Hub

are easily expanded by cascading

hubs of equal or greater capacity.

See Section 3.4 for more about the

Up-Link switched-port feature.

The 10BASE-T MiniHub’s small

size makes it very useful for

demonstration situations in confer-

ence rooms and in exhibitions where

a temporary network or network

expansion is needed. The 10BASE-T

MiniHub takes up minimal space

and requires no AC power, and is

rugged enough to be carried in a

coat pocket.

2.1 Inspecting the Package

and Product

Examine the shipping container for

obvious damage before installing

this product; notify the carrier of any

damage that you believe occurred

during shipment or delivery. Inspect

the contents of this package for any

signs of damage and make sure that

the items listed below are included:

• 10BASE-T MiniHub

• (1) pair of mounting ears

• (1) Velcro®tape section,

approximately 3 inches long

• This User’s Guide

Remove the 10BASE-T MiniHub

from the shipping container. Be sure

to keep the shipping container in

case you need to ship the unit at a

later date.

If any items are missing or

damaged, contact your supplier.

CHAPTER 2: Introduction

The 10BASE-T MiniHub fits easily

into the workplace environment. It

ican be mounted on a tabletop or

shelf, or, with the included Velcro®

strip, on a wall surface, or on the

back or side of a desk or cabinet. All

of the wiring connectors are in the

same place, so that wiring space is

neat and minimal.

The 10BASE-T MiniHub includes

Link and RX LEDs for each RJ-45

port, and one LED for power,

located in the upper right corner.

Since each LED is near the port it

monitors, it is easy to associate the

status LED for each of the ports with

the appropriate port.

10BASE-T

12V #AUI

10BASE-T MiniHub

PWR

AUI PORT

UP LINK

124

1RX

LINK

PORT 3

568

Fig. 2-1. Top View—10BASE-T MiniHub.

10BASE-T MINIHUB

• LEDs simplify network

installation and maintenance—

The 10BASE-T MiniHub is

equipped with a full comple-

ment of LEDs to provide status

about basic network activity.

Eight Link LEDs offer a very

simple way for operational

connections to be verified at the

end of each 10BASE-T segment.

• Low-cost, standalone 10BASE-T

connectivity—Operating in a

standalone environment as a

self-sufficient device, the

10BASE-T MiniHub offers a very

low cost method of providing

small workgroups access to a

variety of Ethernet networking

services such as file sharing,

email, printer sharing, and other

computer information.

The 10BASE-T MiniHub is used as

a standalone unit to network a local

personal multi-user system such as

shown in Figure 2-2.

2.3 Features and Benefits

• Interconnect to an existing

Ethernet network—The 10BASE-

T MiniHub provides an Up-Link

switch for port #8 to be used to

connect it into an existing

Ethernet environment (such as

the central hub for the building

or area) via 10BASE-T wiring.

• Interoperable with other

Ethernet devices—The 10BASE-

T MiniHub is completely

interoperable with other

Ethernet-compliant network

devices. Each is fully compliant

with IEEE 802.3 specifications

for 10 Mbps CSMA/CD oper-

ation. This allows the Hub to be

integrated within any standard

Ethernet network and to operate

with all standard software.

• Installation versatility—The

10BASE-T MiniHub is simple

and easy to install in almost any

office or lab location. The tiny

package is very unobtrusive.

• Robust Network Operations—

The 10BASE-T MiniHub uses the

“star” network topology and has

automatic per-port partitioning

and reconnection. A fault on

one segment is isolated from

the rest of the network, avoiding

most network downtime.

CHAPTER 2: Introduction

Fig. 2-2. Hub Used in a Standalone Network.

10BASE-T

12V #AUI

10BASE-T MiniHub

PWR

AUI PORT

UP LINK

124

1RX

LINK

PORT 3

568

PCs

Laser Writer

User

Port

AUI connection

Up to 8 RJ-45 user ports are

available where only 10BASE-T

wiring is used, and full-length

Ethernet segments are supported

on all 8 segments. In this

application, the “Up-Link” switch is

in the straight-through or = position,

so that port #8 on the front of the

unit is a user port (not an up-link to

another hub).

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