Black Box LE2690A Скачать руководство пользователя страница 8

3

CHAPTER 2: Introduction 

2.1 General Overview

The 9-Port Personal 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.

Personal MiniHubs provide a simple and inexpensive solution for

networking a personal multi-system office using 10BASE-T twisted-pair

cabling. They can expand an existing single-network-port outlet to provide

up to eight extra ports in the immediate office or lab area.

Personal MiniHubs are also well suited for small-to-medium-size office or

lab environments (two to eight 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 9-Port Personal MiniHubs are easily expanded by

taking advantage of the MiniHubs’ uplink-switchable port to add hubs of

equal or greater capacity in a cascade (see

Section 3.3

).

The small size of the Personal 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 possible emergencies.

Personal 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 an available

AC wall receptacle or power strip.

The 9-Port Personal MiniHub’s RJ-45 ports support connection of up to

nine workstations or other network devices over full-length 10BASE-T cable

segments. Personal MiniHubs fully comply with the IEEE 802.3

2. Introduction

Содержание LE2690A

Страница 1: ...ort 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com 9...

Страница 2: ...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...

Страница 3: ...parato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en las...

Страница 4: ...lineas de energia 16 El cable de corriente deber 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 se...

Страница 5: ...es and Benefits 4 2 3 Applications 5 3 Installation 7 3 1 Before You Install The Complete Package 7 3 2 The Installation Procedure 7 3 3 Cascading 10 4 Operation 11 4 1 LED Indicators 11 4 2 Operating...

Страница 6: ...ded 10BASE T 150 m 492 ft User Controls Rear mounted slide switch for straight through vs crossover uplink operation Indicators 18 Top mounted recessed LEDs 1 Power 9 Link 1 for each port 8 RX 1 for e...

Страница 7: ...sumption 10 watts maximum 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...

Страница 8: ...uplink switchable port to add hubs of equal or greater capacity in a cascade see Section 3 3 The small size of the Personal MiniHubs make them very useful for demonstration situations in conference r...

Страница 9: ...he ports easy The included extemal wallmount power supply uses AC input power of 120 VAC 60 Hz Its lightweight cord carries DC power to the barrel type power jack on the rear panel shown below of the...

Страница 10: ...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 High Quality Construction Pe...

Страница 11: ...shown below Up to nine RJ 45 user ports are available where only 10BASE T wiring is used and full length Ethernet segments are supported on all segments In this application set the Up Link switch to t...

Страница 12: ...maged contact your supplier If you need to return the unit see Sections 5 2 and 5 3 3 2 The Installation Procedure Installing a 9 Port Personal MiniHub is very simple First keeping in mind that it mus...

Страница 13: ...rnative to Velcro for vertical surface mounting you can use the included small brackets to mount the MiniHub with screws as shown below You can use the metal screws in each side of the Personal MiniHu...

Страница 14: ...ct either a normal 10BASE T connection to a user device switch in the position or a special network uplink connection to another hub or concentrator switch in the x position A special cross pinned cab...

Страница 15: ...nctionality cascaded units can operate together even though there may be a full segment of distance between them To satisfy the four repeater rule defined by Ethernet standards you shouldn t place mor...

Страница 16: ...rear port is physically uplinked cabled to another hub the LINK LED will normally be ON when the Up Link switch is set to the x position If you isolate the MiniHub for full bandwidth local operation...

Страница 17: ...rier is detected simultaneously on multiple ports a jam pattern is generated on each port to create a collision condition When a collision signal from one port is detected it generates a jam pattern t...

Страница 18: ...1 telephone type that the cables have been properly connected and that the cables wires have not been crimped or damaged during installation 3 Make sure that the DC power cord is properly attached to...

Страница 19: ...e 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 Shippin...

Страница 20: ...NOTES...

Страница 21: ...NOTES...

Страница 22: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2000 Black Box Corporation All rights reserved...

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