KTI Networks DH-8T Manuale utente
Installation Guide
10Base-T Ethernet Hub
Model: DH8T
DOC.980213-DH8T-K
P/N: 750-0104-001
KTINetworksInc.Allrightsreserved.Nopartofthisdocumentationmaybe
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. reserves the right to revise this documentation and to
make changes in content from time to time without obligation on the part of
KTI Networks Inc. to provide notification of such revision or change.
For more information, contact:
UnitedStates
KTINetworksInc.
P.O.BOX631008
Houston,Texas77263-1008
Phone: 713-2663891 Fax: 713-2663893
BBS: 713-2663015 E-mail: [email protected]
Web: http://www.ktinet.com/
International
Fax: 886-2-26983873
E-mail: [email protected]
Web: http://www.ktinet.com.tw/
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. NetWare is a registered trademark
of Novell Inc.
WARNING:
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and if not installed and used in accordance with the
instruction manual may cause harmful interference in which case the user will be
required to correct the interference at his own expense.
NOTICE:
(1)The changes or modifications not expressively approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.
(2)Shielded interface cables and AC power cord, if any, must be used in order to
comply with the emission limits.
CISPRACOMPLIANCE:
This device complies with EMC directive of the European Community and meets or
exceeds the following technical standard.
EN 55022 - Limits and Methods of Measurement of Radio Interference Characteris-
tics of Information Technology Equipment. This device complies with CISPR Class
A.
WARNING: 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.
CE NOTICE
Marking by the symbol CE indicates compliance of this equipment to the EMC
directive of the European Community. Such marking is indicative that this equip-
ment meets or exceeds the following technical standards:
EN 55022: Limits and Methods of Measurement of Radio Interference characteris-
tics of Information Technology Equipment.
EN 50082/1:Generic Immunity Standard -Part 1: Domestic Commercial and Light Indus-
try.
EN 60555-2: Disturbances in supply systems caused by household appliances and similar
electrical equipment - Part 2: Harmonics.
10BASE-T ETHERNET HUB
INSTALLATIONGUIDE
DOC.980214-DH8T-NK
P/N:750-0104-002
Table of Contents
Chapter 1 Introduction
Introduction ............................................................................... 1
Features.................................................................................... 2
Chapter 2 Installation
Installation................................................................................. 3
CheckingACPower .................................................................. 3
Chapter 3 Making Network Connection
NetworkConnectors.................................................................. 4
Connectingtoan Ethernet Node ............................................... 5
HubtoHubConnectionviaUTPCable ...................................... 6
Chapter 4 Interpreting Hub LEDs
Locationsof theHub LEDIndicators ......................................... 8
Interpretation ............................................................................. 8
Appendix
Specifications.......................................................................... 10
RJ-45Jack PinAssignments .................................................. 10
UTP CablingSpecifications ......................................................11
1. Introduction
Introduction
ThishubisanEthernetHubdesignedforthe10Base-Tenvironment.
In terms of topology, twisted-pair Ethernet 10Base-T is defined as a
startopologyrather than a bus. Each port on the hub connectsto only
one 10Base-T device via unshielded twisted-pair (UTP) cable.
The hub provides eight Twisted-Pair (TP) ports (RJ-45 Jacks) and
one 12V DC power socket on the rear panel. On the front panel,
there are ten LED indicators for displaying the port status and the
hub status. The following figure illustrates the front panel and rear
panelof the hub:
1
Features
• Networkports: 8 TP ports
• Standard: TP 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.
• Each TP port has one Link/Rx LED to indicate the link and
receiving activity status of the UTP link segment.
• Each TP port can detect and correct wiring polarity reversal
automatically.
• Two LEDs are provided to indicate other activities of the hub:
Power LED Power status
CollisionLED Networkcollisionstatus
2
2. Installation
Installation
You can place the hub in an area that meets the following specifica-
tions:
Temperature: 5oto 40oC 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. Before you
begin the installation, check the AC voltage of your area. The AC
power adapter which is used to supply the DC power for the hub
shouldhave the AC voltage matching the commercialpower voltage
at your area.
The specifications of the AC power adapter are:
ACinputpower:AC power voltage of your area
DCoutput power: 12 VDC 500mA min.
DCplug type:
3
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.
Both jacks can not be used at the same time.
The MDI-X jacks can support connections to 10Base-T Ethernet
nodes or lower level hubs via 10Base-T UTP cables. The MDI jack
'8C' is used for connecting to an upper level hub.
A 10Base-T UTP cable can be a Category 3, 4, or 5 unshielded
twisted-pair cable with an RJ45 plug at each end.
4
Connecting to an Ethernet Node
To 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., a PC equipped with 10Base-T Ethernet
adapter).
3. Connect the other end of the UTP cable to an available MDI-X
jack on the hub. It is better to reserve jack #8 for a connection to
anotherhub.
Make sure that the connector on the cable is wired appropriately for
thestandard 10Base-T node. The 'straightthrough'connectionshould
be made from the node through the cable and connectors to the hub.
Refer to Appendix 'RJ-45 Jack Pin Assignments' for the information
of UTP wire pairs.
Hub to Hub Connection via UTP Cable
5
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