HP J3128A AdvanceStack 10Base-T Hub-8E Installation and Reference Guide
©Copyright Hewlett-Packard Company 1996. All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. Publication Number J3128-90001 Edition 1 February 1996 Applicable Product HP J3128A Trademark Credits MS-DOS® and Microsoft® are U.S. registered trademarks of Microsoft Corporation. Ethernet is a registered trademark of Xerox Corporation.
HP J3128A AdvanceStack 10Base-T Hub-8E Use the Hub-8E to connect computers, printers, and servers together to allow users to share resources and data. The steps to set up your network are: 1. Verify included parts 2. Verify that the hub works 3. Mount the hub 4. Connect devices to the hub 1.
2. Verify That the Hub Works To verify that the hub works, follow these steps: 1. Plug the AC adapter’s power cord into the hub’s AC receptacle. AC adapter power cord Your hub is shipped with one of these AC adapters: Australia/New Zealand/China/Argentina Europe/Russia Israel Japan Korea South Africa/India United Kingdom/Hong Kong U.S.
3. Check the LEDs on the hub’s front panel. When the hub is powered on, it performs a 10 second selfdiagnostic test. During the test, each LED is lit momentarily. When the self-test completes successfully, the following events occur: Power LED stays on The BNC Partition LED will remain lit unless a properly terminated thin coax segment is attached. This LED does not affect the operation of the other ports.
3. Mount the Hub The Hub-8E can be placed on a desk or mounted on any vertical or horizontal surface, for example on a wall or under a desk. To locate the hub on a table or other horizontal surface, no special tools are necessary. Be certain to pick a sturdy table in an uncluttered area. You may want to secure the hub’s cables to the leg of the table to prevent people from tripping over them.
Marking the Location Important A hub should be mounted only to a wall or wood surface that is at least 1/2-inch (12.7 mm) plywood or its equivalent. 1. Mark the screw hole locations 5 11/16 inches (14.5 cm) apart on the mounting surface. Make sure you allow enough room to make the cable connections to the hub and to access the cables if they have to be moved. 2.
Adding More Users To Your Network You can add more users to your network by joining two or more hubs together using either thin coaxial cable or twisted-pair cable. Using Thin Coaxial Cable You can connect up to 30 hubs together on a common thin coax segment. The following illustration shows you how to attach a BNC “T” connector and a required terminator to a hub.
Using Twisted-Pair Cable To expand your network, the hub can be cascaded to another hub by using the Cascade port. You can connect up to 4 hubs together by using this port. The following illustration shows two hubs chained together. Standard twisted-pair cable. No mimimum cable length. Maximum length: 100 meters. (This type of connection is also called “MDI/MDI-X” where MDI is the hub-to-hub connection and MDI-X is the hub-to-a-device connection. A device is a printer, computer, or other Ethernet product.
Troubleshooting The bottom of the Hub-8E has a troubleshooting key for the LEDs. Use the table on the bottom of the hub to try to solve the problem first. Most problems are because of the wrong type of cable, improper termination of thin coax cable, bad cable, or exceeding the maximum allowable cable lengths. Use the table below to troubleshoot your hub. Problem One of the users on the network can’t communicate with another network device through the Hub-8E.
Customer Support Services Hewlett-Packard offers a range of customer support services including the World Wide Web, fax, and Network Phone-In Support. World Wide Web http://www.hp.com/go/network_city Do you have questions about designing your expanding network? From this web site, you can also download the Designing HP AdvanceStack Workgroup Networks Guide which addresses capacity planning or dial 1-800-752-0900 to receive a copy by mail.
Specifications Physical Dimensions: 19 cm by 13.2 cm by 2.6 cm (7.5 in by 5.25 inches by 1 inch) Weight: 635 grams (1.40 pounds) Electrical AC voltage: Hub maximum current: Frequency range: 100–250 volts (Voltage tolerance of +/- 10%) 0.8 A max 50/60 Hz (The above specifications are AC adapter specific.
Electromagnetic Emissions FCC part 15 Class A EN 55022 Class A / CISPR-22 Class A VCCI Level I Complies with Canadian EMC Class A requirements. Immunity See the Declaration of Conformity for details at the end of the Regulatory Statements. Acoustic Noise Not applicable Safety and Regulatory Statements Safety Information There are no user-serviceable parts inside these products. Any servicing, adjustment, maintenance, or repair must be performed only by service-trained personnel.
Considerazioni sulla sicurezza Nessun componente di questo prodotto può essere riparato dall’utente. Qualsiasi lavoro di riparazione, messa a punto, manutenzione o assistenza va effettuato esclusivamente da personale specializzato. Questo apparato non possiede un commutatore principale; si mette scotto tensione all’inserirsi il cavo d’alimentazione. Consideraciones sobre seguridad Este aparato no contiene pieza alguna susceptible de reparación por parte del usuario.
VCCI Class 1 (For Japan Only) Note This is a class A product. In a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures.
Declaration of Conformity The following Declaration of Conformity for the HP AdvanceStack 10Base-T Hub-8E complies with ISO/IEC Guide 22 and EN 45014. The declaration identifies the product, the manufacturer’s name and address, and the applicable specifications that are recognized in the European community.
Technical information in this document is subject to change without notice. All rights reserved. Reproduction, adaptation, or translation without prior written permission is prohibited except as allowed under the copyright laws. © Copyright 1996 Hewlett-Packard Company Printed in U.S.A.
