3com 3C16441 User Manual

1

SuperStack™ II Entry Hub
12 Port TP (3C16440) and
24 Port TP (3C16441)
User Guide

T

ECHNICAL INFORMATION

Related Standards

The Entry Hub has been designed and certified to the following
standards:

Functional

Safety

EMC

Environmental EN 60068 (IEC 68)

ISO 8802/3, IEEE 802.3
UL 1950, EN 60950, CSA 22.2 #950
EN 55022 Class B*, EN 50082-1, FCC Part 15 Class A,

CSA C108.8 Class A, VCCI Class 2*, AS 3548 Class B*,
AS 4252.1
*Category 5 screened cables must be used to
ensure compliance with this standard. The use of
unscreened cables complies with the Class A
requirements.

Electrical

Power Inlet

Fuse Pro tection

12 Port Entry Hub

Power Consumption

Power Dissipation

24 Port Entry Hub

Power Consumption

Power Dissipation

IEC 320
2 Amps

34 VA
116 BTU/hr

44 VA
150 BTU/hr

Physical

Width

Depth

Height

Weight

Mounting

440mm (17.3 ins)
224mm (8.8 ins)
44mm (1.7 ins) or 1U

2.04kg (4.5lb)
free standing,

or 19" rack or wall mounted using kit supplied

DUA1644-0AAA01

Environmental

Operating Temperature 0-50 ° C (32-122 ° F)

Humidity

0-90% (non-condensing)

†

†

5

S

AFETY INFORMATION

Please read the following safety information carefully before installing the
Entry Hub.

WAR NIN G: Installation and removal of the unit must be carried out by
qualified personnel only .

■

If installing the unit in a stack with SuperStack II units, it must be installed
below the narrower units.

■

Connect the unit to an earthed power supply to ensure compliance with
safety standards.

■

It is essential that the socket outlet is near to the unit and is accessible.
You can only disconnect the unit by removing the appliance coupler from
the unit.

■

This unit operates under SELV conditions (Safety Extra Low Voltage)
according to IEC 950, the conditions of which are maintained only if the
equipment to which it is connected is also operational under SELV.

■

The appliance coupler, that is, the connector to the device itself and not
the wall plug, must have a configuration for mating with an
EN60320/IEC320 appliance inlet.

■

Under no circumstances should the unit be connected to an A.C. outlet
(power supply) without an Earth (Ground) conection.

France and Peru Only

This unit cannot be powered from IT
unit should be powered by 230V (2P+T) via an isolation transformer ratio 1:1,
with the secondary connection point labelled Neutral, connected directly to Earth
(Ground).

Impédance à la terre

UK Only

The unit is covered by Oftel General Approval, NS/G/12345/J/100003, for indirect
connection to a public telecommunications system. This can only be achieved
using the serial port on the unit and an approved modem.

Power Cord Set

This must be approved for the country where it will be used.

USA and
Canada

Denmark

Switzerland

The cord set must be UL-approved and CSA certified.

■

The minimum specifications for the flexible cord are:

■

No. 18 AWG
Type SV or SJ
3-conductor

The cord set must have a rated current capacity of at least

■

10A.
The attachment plug must be an earth-grounding type with

■

a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A, 250V)
configuration.

The supply plug must comply with Section 107-2-D1,

■

Standard DK2-1a or DK2-5a.
The supply plug must comply with SEV/ASE 1011.

■

supplies. If your supplies are of IT type, this

L’

INFORMATION DE SÉCURITÉ IMPORTANTE

Veuillez lire à fond l'information de la sécurité suivante avant d'installer le
Entry Hub.

AVERTISSEMENT: L'installation et l'enlèvement de l'unité doivent être

faits seulement par le personnel qualifié.

■

Si vous entassez l'unité avec les unités SuperStack II, l'unité doit être
installée en dessous des unités Hub plus étroites.

■

Brancher l'unité à une source de courant mise à la terre pour assurer la
conformité aux normes de sécurité.

■

C'est essentiel que le socle soit installé près de l'unité et soit accessible.
Vous pouvez seulement débrancher l'unité en enlevant la fiche
d'alimentation de la prise de courant.

■

Cette unité marche sous les conditions SELV (Safety Extra Low Voltage)
conformément à IEC950, ces conditions sont maintenues seulement si le
matériel auquel elle est branchée, est aussi en exploitation sous SELV.

■

Le socle de connecteur, c'est-à-dire, le connecteur à l'appareil lui-même et
non pas la prise murale, doit avoir une configuration pour le branchement
avec une admission d'appareil EN60320/IEC320.

W

ICHTIGE SICHERHEITSINFORMATIONEN

Bitte unbedingt vor dem Einbauen des Entry Hub Einheit die folgenden
Sicherheitsanweisungen durchlesen.

Ein- und Ausbau des Gerätes ist nur von Fachpersonal vorzunehmen.

■

Wenn die Dual Speed Hub Einheit in einer Stapel mit anderen SuperStack
II Einheiten eingebaut werden soll, muß die Entry Hub Einheit unter die
schmaleren Hub Einheiten eingebaut werden.

■

Das Gerät an geerdete Stromversorgung anschließen, um eine
Übereinstimmung mit den Sicherheitsbestimmungen zu gewährleisten.

■

Es ist wichtig, daß der Netzstecker sich in unmittelbarer Nähe zum Gerät
befindet und leicht erreichbar ist. Das Gerät kann nur durch Herausziehen
des Verbindungssteckers aus der Steckdose vom Stromnetz getrennt
werden.

■

L'unité ne devrait pas être branchée à une prise de courant C.A. (source de
courant) sous aucun prétexte sans un branchement mis à la terre (mis à la
masse).

Seulement Pour La France et Le Pérou

Cette unité ne peut pas être mise en marche des sources de courant IT
(Impédance à la terre). Si vos sources de courant sont de type IT, cette unité doit
être alimentée par 230V (2P+T) via un rapport de transformation d'isolation de
1:1, avec un point de connexion secondaire étiqueté Neutre, branché directement
à la Terre (à la Masse).

Le Cordon d'Alimentation Surmoulé

Celui-ci doit être approuvé pour le pays auquel il sera utilisé.

USA et le
Canada:

■

■

■

■

■

Le cordon surmoulé doit être UL Certifié et CSA Certifié.

■

Les spécifications minimales pour le cordon souple sont:

■

No. 18 AWG
Type 5V ou SJ
3-conducteur

Le cordon surmoulé doit avoir une capacité de courant calculée

■

au moins de 10A.
La fiche de fixation doit être un type mis à la terre avec une

■

configuration NEMA 5-15P (15A, 125V) ou NEMA 6-15P (15A,
250V).

Das Gerät wird mit Sicherheits-Kleinspannung nach IEC 950 (SELV = Safety
Extra Low Voltage) betrieben. Angeschloßen werden k ö nnen nur Geräte,
die ebenfalls nach SELV betrieben werden.

Das Gerät ist unter keinen Umständen an einen Wechselstrom (A.C.)
Netzstecker anzuschließen ohne Erdungsleitung.

Um Übereinstimmung mit den europäischen Sicherheitsnormen zu
gewährleisten, darf am Zuführungstecker des Gerätes keine
Ersatzsicherung angebracht werden. Nur Sicherungen der gleichen
Herstellung und Marke sowie des gleichen Typs für das Gerät verwenden.

Die Anordnung der Gerätsteckvorrichtung, d.h. die Steckverbindung am
Gerät selbst im Gegensatz zum Wandstecker, muß in den
EN60320/IEC320 Zuführungsstecker am Gerät passen.

Der Anschlußkabelsatz muß mit den Bestimmungen des Landes
übereinstimmen, in dem er verwendet werden soll.

2

I

NTRODUCTION

The SuperStack™ II Entry Hub is a flexible unmanaged Ethernet repeater
which is very easy to use. It can be used in a variety of ways, from
building a small network to expanding a larger, more established
network.

The SuperStack II Entry Hub 12 Port TP (3C16440) has 12 dedicated
shielded twisted pair (TP) ports on the front panel. The SuperStack II
Entry Hub 24 Port TP (3C16441) has 24 dedicated shielded twisted pair
(TP) ports on the front panel. The rear panel also has a slot for a 3Com
Transceiver Module or Bridge MicroModule; if fitted, the Module will
operate in addition to the TP ports. A range of different media
Transceiver Modules is available from 3Com (see “ Products and Bulletin

Boards ” ).

The Entry Hub is suited for office use where it can be wall-mounted,
rack-mounted, or free standing. Alternatively, the unit can be
rack-mounted in a wiring closet or equipment room. A mounting kit is
supplied.

The Entry Hub can be powered either from the AC mains supply, or
through an optional 3Com SuperStack II Advanced RPS (Redundant
Power System). Contact your supplier for details.

The Entry Hub comes with:

■

One power cord for use with the Entry Hub

■

Four standard height and two reduced height self-adhesive
rubber pads

■

Mounting Kit

■

A Warranty Registration card for you to fill out and return

Network Connections

The Entry Hub can be used stand-alone or linked with other hubs.
Because each Entry Hub is a single IEEE 802.3 Ethernet repeater hub,
there can be a maximum of four Entry Hubs between any two pieces of
Data Terminal Equipment (DTE) (workstations or other equipment) on
the same network.

The Entry Hub is ready to use. You can connect the Hub to any DTE
fitted with a 10BASE-T network adapter or a 10BASE-T transceiver.
Connect one end of the twisted pair cable to the RJ45 port on the unit
and the other end to the RJ45 port on your network adapter or
transceiver. You can attach up to 12 or 24 twisted pair segments to the
front of the unit.

The Entry Hub can use both shielded 150 ohm, and unshielded or
shielded 100 ohm twisted pair cables. To remain within 802.3 10BASE-T
rules, the maximum length of cable between the unit and any DTE
should not be greater than 100m (328 feet). Consult your supplier's
technical support department if you need to use twisted pair cables
over greater distances.

You can fit one of the 3Com Transceiver Modules or a Bridge
MicroModule into the slot on the rear panel (see “ Products and Bulletin

Boards ” ) to provide an additional 13th or 25th port.

You can connect the Entry Hub to any other 10BASE-T hub or unit using
port 12 or 24, to form an inter-repeater link. You must switch port 12 or
24 to MDI to bypass the internal cross-over normally implemented by
10BASE-T unit ports. See “ MDI Sw itch ” for information on connecting
hubs and switching port 12 or 24 between MDI and MDIX.

Repeater Functions

The Entry Hub has been designed to conform to the IEEE 802.3 Ethernet
standard for Local Area Networks, and provides all the standard
functions of an 802.3 repeater, including:

■

Signal retiming

■

Preamble regeneration

■

Fragment extension

■

Automatic partition/reconnection

H

OW TO

USE

THE ENTRY

H

UB

Numbered elements in this diagram refer to numbered sections in the text.
These numbers, in bold, are used as references.