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SuperStack™ II Entry Hub
12 Port TP (3C16440) and
24 Port TP (3C16441)
User Guide
TECHNICAL INFORMATION
Related Standards
The Entry Hub has been designed and certified to the following standards:
Functional ISO 8802/3, IEEE 802.3
Electrical
Power Inlet |
IEC 320 |
Fuse Protection |
2 Amps |
Safety |
UL 1950, EN 60950, CSA 22.2 #950 |
EMC |
EN 55022 Class B*, EN 50082-1, FCC Part 15 Class A, |
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CSA C108.8 Class A, VCCI Class 2*, AS 3548 Class B*, |
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AS 4252.1 |
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*Category 5 screened cables must be used to |
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ensure compliance with this standard. The use of |
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unscreened cables complies with the Class A |
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requirements. |
Environmental |
EN 60068 (IEC 68) |
Physical
Width |
440mm (17.3 ins) |
Depth |
224mm (8.8 ins) |
Height |
44mm (1.7 ins) or 1U |
Weight |
2.04kg (4.5lb) |
Mounting |
free standing, |
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or 19" rack or wall mounted using kit supplied |
12 Port Entry Hub |
|
Power Consumption |
34 VA |
Power Dissipation |
116 BTU/hr |
24 Port Entry Hub |
|
Power Consumption |
44 VA |
Power Dissipation |
150 BTU/hr |
Environmental
Operating Temperature |
0-50°C (32-122°F) |
Humidity |
0-90% (non-condensing) |
DUA1644-0AAA01
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SAFETY INFORMATION
Please read the following safety information carefully before installing the Entry Hub.
WARNING: 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† supplies. If your supplies are of IT type, this 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 |
■ The cord set must be UL-approved and CSA certified. |
Canada |
■ The minimum specifications for the flexible cord are: |
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No. 18 AWG |
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Type SV or SJ |
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3-conductor |
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■ The cord set must have a rated current capacity of at least |
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10A. |
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■ The attachment plug must be an earth-grounding type with |
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a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A, 250V) |
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configuration. |
Denmark |
■ The supply plug must comply with Section 107-2-D1, |
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Standard DK2-1a or DK2-5a. |
Switzerland |
■ The supply plug must comply with SEV/ASE 1011. |
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.
■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 ■ |
Le cordon surmoulé doit être UL Certifié et CSA Certifié. |
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Canada: |
■ |
Les spécifications minimales pour le cordon souple sont: |
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No. 18 AWG Type 5V ou SJ 3-conducteur
■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.
■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).
WICHTIGE SICHERHEITSINFORMATIONEN
Bitte unbedingt vor dem Einbauen des Entry Hub Einheit die folgenden Sicherheitsanweisungen durchlesen.
Einund 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.
■Das Gerät wird mit Sicherheits-Kleinspannung nach IEC 950 (SELV = Safety Extra Low Voltage) betrieben. Angeschloßen werden können 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.
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INTRODUCTION
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
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 Switch” for information on connecting hubs and switching port 12 or 24 between MDI and MDIX.
■A Warranty Registration card for you to fill out and return
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
HOW TO USE THE ENTRY HUB
Numbered elements in this diagram refer to numbered sections in the text.
These numbers, in bold, are used as references.
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