Manuale d’uso / di manutenzione del prodotto DH-8T del fabbricante KTI Networks
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Installation Guide 10Base-T Ethernet Hub Model: DH8T DOC.980213-DH8T-K P/N: 750-0104-001.
KTI Networks Inc. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any directive work (such as translation or transformation) without permission from KTI Net- works Inc. KTI Networks Inc.
The information contained in this document is subject to change without prior no- tice. Copyright Ó KTI. All Rights Reserved. TRADEMARKS Ethernet is a registered trademark of Xerox Corp.
10BASE-T ETHERNET HUB INST ALLA TION GUIDE DOC.980214-DH8T-NK P/N:750-0104-002.
T able of Contents Chapter 1 Introduction Introduction ............................................................................... 1 Features .................................................................................... 2 Chapter 2 Installation Installation .
1. Introduction Introduction This hub is an Ethernet Hub designed for the 10Base-T environment. In terms of topology , twisted-pair Ethernet 10Base-T is defined as a star topology rather than a bus. Each port on the hub connects to only one 10Base-T device via unshielded twisted-pair (UTP) cable.
Features • Network ports: 8 TP ports • Standard: T P ports conform to IEEE 802.3 10Base-T std. • Provides an additional RJ-45 jack labeled '8C' on the TP Port #8 for connecting to another hub. A standard straight-through 10Base-T UTP cable can be used for the hub-to-hub connection.
2. Installation Installation Y ou can place the hub in an area that meets the following specifica- tions: T emperature: 5 o to 40 o C when operating Humidity: 10% to 80% when operating Dimension: 195 mm x 129 mm x 28 mm (WxDxH) Checking AC Power One AC power adapter is contained in the hub package.
3. Making Network Connections Network Connectors The hub has 8 TP ports which are presented by 8 RJ-45 jacks. The jacks labeled 1 through 8 are permanently configured as 10Base-T MDI-X jacks and the jack labeled '8C' next the jack labeled '8' is an alternative jack which is configured as MDI jack for the TP port #8.
Connecting to an Ethernet Node T o connect the hub to a 10Base-T Ethernet node, follow these steps: 1. Select an appropriate length of 10Base-T UTP cable for the connection. 2. Connect one end of the UTP cable to the MDI jack on the remote device (e.g.
When the number of 10Base-T nodes in your network exceeds eight, you need to connect at least two hubs to integrate all 10Base-T nodes into one network. Y ou may connect one hub to another hub by using an ordinary UTP cable as the following steps: 1. Connect one end of the UTP cable to the jack labeled '8C' of Hub A.
When connecting more than two hubs via TP ports and UTP cables, it is important to minimize the number of hubs in any path of the network. Y ou may select one hub to serve as a primary hub to which other hubs will be connected. This will minimize the number of hubs in any path (node to node) on the network.
4. Interpreting Hub LEDs Locations of the Hub LED Indicators The hub provides the following LEDs : • One Power status LED • One Collision status LED • Eight Link and activity status LEDs. One for each TP port Interpretations Power LED The LED indicates the status of the hub's power source.
Collision LED This LED indicates the collision detected by the hub. The LED is normally off and it blinks when there are collisions. As the frequency of collisions on a network increases, the blink activities (on-time) of the LED also increase.
Appendix Specifications T emperature: Operating 5 o to 40 o C Storage -40 o to 70 o C Humidity: Operating 10% to 80% Storage 5% to 90% Dimension: 195mm (W) x 129mm (D) x 28mm (H) 7.7 inch (W) x 5.1 inch (D) x 1.1 inch (H) RJ-45 Jack Pin Assignments The following illustrations indicate the pin assignments of the RJ-45 jacks on the hub.
UTP Cabling Specifications The hub's TP ports support standard 10Base-T cable topologies and types, including Category 3, 4, or 5 unshielded twisted pair cable.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il KTI Networks DH-8T è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del KTI Networks DH-8T - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso KTI Networks DH-8T imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul KTI Networks DH-8T ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il KTI Networks DH-8T, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del KTI Networks DH-8T.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il KTI Networks DH-8T. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo KTI Networks DH-8T insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
