Black Box LE2650A Manual de usuario

CUSTOMER

SUPPORT

INFORMATION

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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]

JUNE 2001

LE2650A

LE2650AE

Personal MiniHub

10BASE-T

12V #AUI

PARALLELPARALLEL

LINK

PORT

Personal MiniHub

1234

PORT 5

PWR

LINK

UP LINK

PERSONAL MINIHUB

FEDERAL COMMUNICATIONS COMMISSION

RADIO FREQUENCY INTERFERENCE STATEMENT

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 édicté 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.

PERSONAL MINIHUB

Contents

Chapter Page

1. Specifications ..................................................................................................3

2. Introduction....................................................................................................4

2.1 Inspecting the Package and Product ...................................................4

2.2 Description ............................................................................................4

2.3 Features and Benefits............................................................................7

2.4 Applications...........................................................................................8

3. Installation.....................................................................................................10

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

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

3.3 Twisted Pair Segment Connection.....................................................14

3.4 Up-Link Option on Port #5 (Up-Link Switch)..................................15

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

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

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

5.2 When Calling for Assistance...............................................................19

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

5.4 Shipping and Packaging Information................................................20

CHAPTER 1: Specifications

1. Specifications

Network Standards — Ethernet

V2.0, IEEE 802.3: 10BASE-T

(the Hub is a physical-layer

standard Ethernet product and

operates independently of all

software)

Operating Environment — Ambient

Temperature: 32 to 122° F (0 to

50° C); Storage Temperature: -4

to 140° F (-20 to 60° C)

Power — LE2650A: 115 VAC,

60 Hz power supply,, UL®listed,

CSA certified; LE2650AE:

230 VAC, 50 Hz power supply,

UL®listed, CSA certified, TUV

and GS approved

Size — 0.8"H x 3.3"W x 4.8"D

(2 x 8.4 x 12.2 cm)

Weight — Hub: 0.8 lb. (0.4 kg);

Power supply: 1 lb. (0.5 kg)

Standards — IEEE 802.3 Ethernet

Connectors — (5) RJ-45 female:

(4) station ports, (1) switch-

selectable uplink/station port

Indicators — (11) LEDs: (5) LINK,

(5) 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

Maximum Ethernet Segment

Lengths — UTP (Unshielded

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

STP (Shielded 10BASE-T):

492 ft. (150 m)

PERSONAL MINIHUB

2. Introduction

2.2 Description

The Personal MiniHub is a five-port

10BASE-T workplace hub in a very

compact package. It can expand

a “power user’s” existing single

network port to provide up to three

extra ports in the immediate office

or lab area. It is simple to install and

use in an office or lab environment,

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 Personal MiniHub is also well-

suited for small-to-medium sized

office or lab environments (two

to four persons) that need an

independent Ethernet network.

Small independent 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.

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:

• Personal MiniHub

• External power supply, either

115 VAC, 60 Hz (LE2650A) or

230 VAC, 50 Hz (LE2650AE)

• (1) Velcro®tape section,

approximately 3 inches long

• (2) Rackmount brackets and

screws

• This User’s Guide

Remove the Personal 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 Black Box.

CHAPTER 2: Introduction

The Personal MiniHub’s small

size makes it very useful for demon-

stration situations in conference

rooms and in exhibitions where

a temporary network or network

expansion is needed. The Personal

MiniHub takes up minimal space

and uses minimal power, and is

rugged enough to be carried in a

coat pocket.

The Personal 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 external

power supply conveniently plugs

into an available AC wall receptacle

or power strip.

10BASE-T

12V #AUI

PARALLELPARALLEL

LINK

PORT

Personal MiniHub

1234

PORT 5

PWR

LINK

UP LINK

Fig. 2-1. Personal MiniHub.

Fig. 2-3. Top View—Personal MiniHub.

PERSONAL MINIHUB

1234

Fig. 2-2. RJ-45 10BASE-T Ports.

10BASE-T

12V #AUI

PARALLELPARALLEL

Personal MiniHub

1234

1RX

LINK

PORT

PORT 5

PWR

LINK

UP LINK

The Personal MiniHub includes

Link and RX LEDs for each RJ-45

port, and one LED for power,

located near the external power

supply. 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.

The external power supply that

comes with the Personal MiniHub is

one of two types: one version for AC

input power of 115 VAC, 60 Hz, and

one version for 230 VAC, 50 Hz. The

115-VAC version has a small trans-

former integral with a convenience

power outlet plug, and a lightweight

DC power cord to the applicable

power jack on the hub. The 230-VAC

version has a small transformer

integral with an IEC-type power plug

for a user-supplied AC power cord

with a convenience power outlet

plug. It also includes a lightweight

DC power cord to connect to the

power jack on the Personal

MiniHub unit.

2.3 Features and Benefits

• Interconnect to an existing

Ethernet network—The

Personal MiniHub provides an

Up-Link switch for port #5 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

Personal MiniHub is completely

interoperable with other

Ethernet-compliant network

devices. Each is fully compliant

with IEEE 802.3 specifications

for 10 Mbps CSMA/CD opera-

tion. This allows the Hub to be

integrated within any standard

Ethernet network and to operate

with all standard software.

• Installation versatility—The

Personal MiniHub is simple

and easy to install in almost any

office or lab location. The tiny

package is very unobtrusive.

• Robust Network Operations—

The Personal 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

PERSONAL MINIHUB

• LEDs simplify network

installation and maintenance—

The Personal MiniHub is

equipped with a full comple-

ment of LEDs to provide status

about basic network activity. Five

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

Personal 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.

2.4 Applications

Expanding from one to four ports at

an existing site is easy, and requires

no modification to typical building

wiring. The installer simply plugs the

existing networked device’s network

cable segment into one of the

MiniHub’s front RJ-45 ports. The

Up-Link port #5 (with switch set to

X) connects via 10BASE-T cabling

to the existing network outlet. Then,

power is connected to the Hub by

plugging in its external power supply

unit to an AC power receptacle, and

plugging the DC power plug into the

jack on the back/rear of the unit. In

minutes, three new ports are

available for other networked

devices.

10BASE-T

12V #AUI

PARALLELPARALLEL

Personal MiniHub

1234

1RX

LINK

PORT

PORT 5

PWR

LINK

UP LINK

Fig. 2-4. Attaching to a Backbone.

PCs

Laser Printer

Up to five RJ-45 user ports are

available where only 10BASE-T

wiring is used, and full-length

Ethernet segments are supported on

all five segments. In this application,

the “Up-Link” switch is in the

straight-through or = position, so

that port #5 on the back of the unit

is a user port (not an up-link to

another hub).

The Personal MiniHub may also

be used as a standalone to network a

local personal multi-user system such

as shown in Fig. 2-5.

Fig. 2-5. Hub Used in a Standalone Network.

10BASE-T

12V #AUI

PARALLELPARALLEL

Personal MiniHub

1234

1RX

LINK

PORT

PORT 5

PWR

LINK

UP LINK

User Port

PCs

Laser Writer

CHAPTER 2: Introduction

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