Compaq Netelligent 1009B User Manual

Netelligent 1009B
10Base-T Hub
User Guide

©1997 Compaq Computer Corporation.All rights reserved.
Compaq Registered U.S.Patent and Trademark Office.
Company and product names mentioned herein may be
trademarks and/or registered copyright and trademarks of
their respective companies.

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NOTICE

The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR

EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL.

This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.

The software described in this guide is furnished under a license agreement or non-disclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.

Product names mentioned herein may be trademarks and/or registered trademarks of their respective
companies.

 1997 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.

iii

Compaq

Registered United States Patent and Trademark Office.

Netelligent is a trademark of Compaq Computer Corporation.

Compaq Netelligent 1009B 10Base-T Hub User Guide

Second Edition (August 1997)

Part Number 167174-002

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v

Contents

Chapter 1

Introduction

Features.........................................................................................................................1-1

Chapter 2

Hardware Description

Front Panel....................................................................................................................2-1

LED Indicator Panel..............................................................................................2-1

Back Panel ....................................................................................................................2-6

Port Connections ...................................................................................................2-6

Chapter 3

Installing the Hub

Site Requirements.........................................................................................................3-1

Connecting the Hub System .........................................................................................3-2

Chapter 4

Configurations

Stand-Alone Configuration...........................................................................................4-1

Connecting Multiple Hubs............................................................................................4-2

Using Crossover Twisted-Pair Cable ....................................................................4-3

Using the BNC Port ...............................................................................................4-4

Guidelines for Multiple Hub Configuration .................................................................4-5

Appendix A

Troubleshooting

Appendix B

Port and Cable Pin Assignments

Compaq Netelligent 1009B 10Base-T Hub User Guide

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vi

Appendix C

Specifications

Appendix D

Regulatory Standards Compliance

Index

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Preface

About this Guide

This user guide is designed for the experienced network installer. It covers the
following information to help in the installation and configuration of the
Netelligent 1009B 10Base-T Hub:

Q

Hardware description and summary of features

Q

Hardware installation and configuration

Q

Troubleshooting tips

Package Checklist

Carefully unpack the contents of the package and verify them against the
checklist given below.

vii

Q

Netelligent 1009B 10Base-T Hub

Q

BNC T-type connector

Q

Power adapter

Q

Compaq Netelligent User Guide CD

Q

Compaq Netelligent 10Base-T Hub Quick Install Guide

Q

Warranty registration card

If any parts are incorrect, missing, or damaged, contact your Compaq
Authorized Reseller. If possible, retain the carton and original packing materials
in case you need to repack the contents and return the hub for repair.

: To qualify your 1009B hub for a lifetime warranty, fill in the warranty

NOTE

registration card and return it to Compaq Computer Corporation at the address

indicated on the card.

Compaq Netelligent 1009B 10Base-T Hub User Guide

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1-1

Chapter 1

Introduction

The Netelligent 1009B 10Base-T Hub is an 8-port Ethernet hub featuring an on­board microprocessor designed to monitor network utilization, collisions, link
and port partition status. The hub’s comprehensive LED indicator panel
simplifies installation and network troubleshooting by showing network
utilization and collision levels at the hub ports.

Features

The Netelligent 1009B 10Base-T hub provides the following features:
Automatic Partitioning and Reconnection – automatically isolates a port in

the event of excessive collisions and reconnects the port when normal operation
resumes

Jabber Lockup Protection – automatically stops transmission of abnormal
Ethernet frames that could cause data loss for the network

Automatic Polarity Detection – recognizes and adjusts 10Base-T ports for
attached cable assemblies which may be wired with incorrect polarity on the
receive pair

Eight independent RJ-45 ports – enables network connections using
10Base-T twisted-pair cable

Cascading – lets you connect the 1009B hub to another 1009B or compatible
hub using the hub’s uplink port

BNC Port – lets you connect the hub to 10Base2 (BNC) cabling
IEEE 802.3 Compliant – conforms to IEEE 802.3 repeater specification, as

well as the 10Base-T and 10Base2 standards

Compaq Netelligent 1009B 10Base-T Hub User Guide

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2-1

Chapter 2

Hardware Description

The Netelligent 1009B 10Base-T Hub is a highly reliable network concentrator
that complies with IEEE 802.3 specifications. By passing data signals received
on any port to all other ports, without modification, this hub meets the
requirements for both Ethernet and IEEE 802.3 networks.

This chapter describes the main hub components. For easier management and
control of the hub, familiarize yourself with the front panel indicators. Figure
2-1 shows the front panel of the hub where the LED indicators are located.

Front Panel

This section describes the 1009B hub’s front panel.

Figure 2-1

LED Indicator Panel

The LED indicator panel let you easily monitor the status of each port and the
overall condition of the hub. The following sections describe the function of
each indicator.

Power

Color: Green
Label: Power
Function: Power indicator

. 1009B Hub Front Panel

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Hardware Description

2-2

LED Activity Condition Indication

STEADY LIGHT ON Hub is receiving power.

NO LIGHT OFF Power is disconnected; no power received.

Utilization

The Utilization LEDs indicate the percentage of network bandwidth used by
valid data. The hub updates this display every 0.5 seconds.

Figure 2-2

1% 5% 15% Green Indicates percentage utilization of LAN

30% 65+% Amber

. Utilization/Collision Indicators

Label (%) Color Function

bandwidth.

(yellow)

There are five LEDs that represent the percentage of network utilization. The
corresponding LEDs light to show that the percentage utilization of LAN
bandwidth has reached this level. When active, these LEDs look like a stereo’s
equalizer display.

For example, if network utilization reaches 1%, the LED labeled 1% lights.
However, if network utilization rises above 1% (for example, 30%), the LED
labeled 30 and all the other LEDs before it (that is, 1, 5, and 15) light in rapid
succession.

These LEDs monitor the share of valid network frames transmitted by this hub
within a 10Mb/s bandwidth. They provide a quick way to monitor the current
traffic load relative to the network’s capacity.

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2-3

Collision

Label (%) Color Function

1% 3% 5% Green
10% 15+% Amber (yellow)

Indicates the percentage of packet collisions
occurring out of the total packets received by
the hub.

Collisions occur when two or more devices connected to a hub attempt to
transmit data simultaneously on the network. When a collision occurs, devices
pause and then re-transmit after a random wait period. Because wait periods
differ among devices, successive collisions become increasingly improbable.

The Collision LEDs help you monitor the percentage of packet collisions that
occur relative to the total packets received by the hub. Similar to Utilization
LEDs, the Collision LEDs have five numbers that represent collision
percentage. When collisions reach a level marked on the LED display, the
corresponding LED lights.

For example, if packet collisions reach 1%, the LED labeled 1% lights.
However, if collisions go beyond 1% (for example, 15%), the LED labeled 15+
and all the other LEDs before it (that is, 1, 3, 5, and 10) also light in rapid
succession.

NOTE: After 32 consecutive collisions occur on the cable segment connected to a
port, that port is automatically partitioned by the hub. The hub automatically
reconnects this port when a data packet longer than 512 bits (normal) is transmitted
by the partitioned port without collision.

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Hardware Description

2-4

Figure 2-3

. Partition/Link Traffic LEDs

Partition

LED Activity Condition Indication

STEADY YELLOW

LIGHT

NO LIGHT OFF Port is in good condition.

A port is temporarily partitioned when a line error or too many collisions are
detected on the attached segment. While it is automatically partitioned, the port
continues to transmit data to the segment. However, data is not repeated from
the segment. When the problem is corrected or a valid data packet is received
through the port, the port is automatically reconnected. When partitioning
occurs, the port’s corresponding Partition LED is continually lit yellow.
Otherwise, this LED should be off.

PARTITION Indicates port partitioning due to a cable error or

other abnormal network condition.

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2-5

Link/Traffic

LED Activity Condition Indication

STEADY GREEN LIGHT ON Indicates a valid link has been established on this port.

BLINKING GREEN

LIGHT

NO LIGHT OFF No valid link has been established on this port.

ON Indicates the port is receiving packets; blinking is

proportional to the traffic passing through the port.

Link

The corresponding Link/Traffic LED lights when a device (for example,
computer, hub or bridge) establishes a valid connection using the RJ-45 port.
However, for the BNC port, no link connection is tested. The Link/Traffic LED
for this port only monitors the traffic condition.

Troubleshooting:

If the Link/Traffic LED does not light when a device is connected

to its corresponding port, check that both the hub and connected device are

powered on. For devices connected to the hub using a twisted-pair cable, check

that the cable length does not exceed 100 meters. You should have standard,

straight-through cables and not crossover or other specialized cables.

Traffic

Traffic refers to the movement of packets being received by the port. A port’s
corresponding Link/Traffic LED flashes in proportion to the rate of traffic
passing through the port. Through this LED, the network manager can easily
view the activity on a port.

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Hardware Description

2-6

Back Panel

This section describes the hub’s back panel components.

Figure 2-4

Port Connections

BNC (10Base2) Connector

The 1009B hub has a built-in BNC transceiver for a connection using thin
coaxial cable. The BNC port can link up to 30 hubs on a thin coaxial cable
segment. The thin coaxial cable that links the BNC ports can extend up to 185
meters and have computers or other Ethernet devices attached to it. When
connecting two hubs via BNC ports, there should be at least 0.5 meters (about
two feet) of coaxial cable between the two BNC ports. If the hub is at the end of
an Ethernet cable, plug and lock the 50-ohm (Ω) terminators to the T-type
connector on the BNC port.

NOTE

port with a 50-ohm (Ω) terminator. In particular, when a hub using the BNC port

connection is at the end of an Ethernet segment, terminate the open end of the

T-type connector with a 50-ohm (Ω) terminator. Also, if the BNC port is not used,

plug a T-type connector to it and terminate both ends with a 50-ohm (Ω)

terminator.

. 1009B Hub Back Panel

: Terminate an open end of any T-type connector that is plugged into a BNC

RJ-45 Ports

The hub has eight RJ-45 MDI-X station ports. Using straight-through twisted­pair cable, connect your workstation (via the network interface card’s port) to
any available station port.

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2-7

UPLINK Port

You can use the MDI UPLINK port to expand the network by connecting the
hub to another 1009B or compatible hub using straight-through twisted-pair cable.

: If you use the UPLINK port, you cannot use RJ-45 Port 8.

NOTE

You can also uplink to another hub by running straight-through twisted-pair
cabling from any station port on the 1009B hub to a crossover port on another
1009B or compatible hub. However, if you must connect to another hub via
station ports at both ends of the cable, use crossover cabling.

Power Connector

The power adapter plugs into the hub’s power connector and a main power
source that provides 100V, 120V, 220-230V, or 240V at 50 to 60Hz.

: Some types of adapters have a ferrite bead attached to the power cable to

NOTE

reduce interference caused by electromagnetic radiation. For best results, wrap the

cable around the clamp-on ferrite bead to create a single loop as close as possible to

the adaptor jack.

Compaq Netelligent 1009B 10Base-T Hub User Guide

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3-1

Chapter 3

Installing the Hub

This chapter describes how to install the Netelligent 1009B 10Base-T Hub. It
describes specific installation requirements, installation procedures, and basic
network connections.

Site Requirements

Consider the following site requirements before you install the hub.

Q

Verify that the power source meets the following electrical
specifications.

AC Power Frequency

100 to 240V (+/- 10%) 50 to 60Hz (+/- 3Hz)

Q

Be sure the adapter supplied with your hub matches your site’s utility
voltage.

Q

Leave at least 10 cm. of space at the front and back of the hub for
ventilation. We recommend that you install the hub in a cool, dry area.

Q

Be sure you place the hub on a solid, level surface, such as a table or
shelf. A good location is at the center of all the devices you want to link,
close to the trunk segment, and near a power outlet.

Q

Be sure you connect the hub only to another 1009B or compatible
10Base-T hub.

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Installing the Hub

3-2

Connecting the Hub System

Follow these steps to connect the hub to your network.

1. Cascade hubs using the UPLINK port.

The UPLINK port lets you uplink the 1009B hub to another 1009B or
compatible hub. This port reverses transmit and receive signals, which
lets you use straight-through cable to cascade hubs instead of crossover
cable. To uplink to another hub, plug one end of a twisted-pair cable to
the UPLINK port and plug the other end of the cable to any RJ-45 port
of a compatible hub. (However, you must not plug both ends of the cable
to the UPLINK port of each hub.) If all your hubs are from Compaq, you
can link up to five hubs using this type of connection. Otherwise, limit
your configuration to four hubs.

: Do not plug in a phone jack connector to the RJ-45 port. This may

NOTE

damage the hub. Instead, use only twisted-pair cables with RJ-45 connectors

that conform with FCC standards.

2. Connect the hub to an Ethernet trunk, if necessary.

BNC - Plug the BNC T-type connector into the BNC port on the back of
the hub, and use this port to connect the device to a 10Base2 Thin
Ethernet trunk. If the hub is at the terminal end of a trunk segment, then
connect a 50-ohm (Ω) terminator to the open end of the “T” connector.
If the Ethernet BNC trunk port has no connection, plug in the BNC
T-type connector and lock both ends with a 50-ohm (Ω) terminator.

3. Connect workstations to the hub.

Prepare the workstations you want to network. Be sure they have
properly installed 10Base-T network interface cards, or external
10Base-T transceivers.

Prepare straight-through twisted-pair cables with RJ-45 plugs at both
ends. The length of each cable should not exceed 100 meters.

Connect each computer to an available RJ-45 station port
on the hub using twisted-pair cable. Connect one end of the cable to the
RJ-45 port of the PC's network interface card and the other end to an
available station port on the hub. When inserting an RJ-45 plug, be sure
the tab on the plug clicks into position to ensure that it is properly seated.

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3-3

Using the hub in a stand-alone configuration, you can network up to
eight workstations.

: You can also connect a workstation to the BNC port. However, be sure

NOTE

you use a proper transceiver when connecting to this port.

4. Install the power adapter and power on the hub.

Plug the smaller end of the power adapter cord into the power connector
on the back of the hub. Then connect the other end of the power adapter
cord into an electric outlet. The Power LED indicator lights when power
is applied.

: The hub supports a hot remove feature that lets you connect or

NOTE

disconnect twisted-pair cables while the hub is powered on without disrupting

operation.

5. Verify that all attached devices have a valid connection.

The hub monitors link status for each port. If any device is properly
connected to the hub and transmitting a link beat signal, the Link
indicator lights for the corresponding port. If valid traffic is being
transmitted by the connected device, the same indicator (now referred to
as the Traffic indicator) flashes to indicate network activity.

If the Link indicator fails to light (or the Partition indicator does light)
when you connect a device to the hub, check the following items:

 Be sure the twisted-pair cable is properly attached to the connected

device and the hub. Verify that the RJ-45 plug snaps into place
when attached.

 See if the twisted-pair cable is functioning properly by using it for

another port and attached device that displays valid indications
when connected to the network.

 Check the length of the twisted-pair cable to be sure it does not

exceed 100 meters.

 Verify that the workstation’s adapter card is functioning properly by

trying it in another computer that has been successfully connected to
the network.

Writer:

Chris Seiter

Project:

Installing the Hub

Compaq Netelligent 1009B 10Base-T Hub User Guide

Comments:

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Installing the Hub

3-4

If you still cannot resolve the problem, refer to “Appendix A –
Troubleshooting.”

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4-1

Chapter 4

Configurations

The Netelligent 1009B 10Base-T Hub allows flexibility in configuring your
network. You can use the hub in a stand-alone or multiple hub configuration.
The hub’s RJ-45 UPLINK (MDI) port lets you connect multiple hubs using
Category 3, 4 or 5 unshielded twisted-pair cable, or you can link hubs using a
backbone connection.

You can install the 1009B hub in a standard wiring closet or close to a
workgroup. All end-node devices (for example, workstations or servers) must
be within 100 meters of the connected hub.

Stand-Alone Configuration

The 1009B hub can function as a simple stand-alone configuration as shown
below. Based on IEEE 802.3 standards, the maximum cable distance between
the hub and any workstation is 100 meters.

Figure 4-1

. Stand-Alone Configuration

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Configurations

4-2

Connecting Multiple Hubs

The 1009B hub provides an uplink port that lets you connect the hub to another
1009B or compatible hub. The IEEE 802.3 standard recommends a limit of four
hubs in an uplink configuration. However, physical restrictions depend on
actual repeater delay. Therefore, if all your hubs are from Compaq, you can
have up to five hubs in the configuration for a maximum LAN size of 35 nodes
(that is, using Ports 1-7 on each available hub). You can configure a larger
network if you use a star or hierarchical star configuration as described in
“Guidelines for Multiple Hub Configuration.” Figure 4-2 shows an example
uplink configuration.

Figure 4-2

: When using the UPLINK port to connect to another hub, use straight-through

NOTE

(normal) twisted-pair cable. This cable is the same cable used for connecting the

hub to a workstation. For more information, see Appendix B  Port and Cable Pin

Assignments.

. Multiple Hub Configuration Using Uplink Port

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4-3

Using Crossover Twisted-Pair Cable

You can use crossover twisted-pair cable to connect the 1009B hub to a
compatible hub using any available RJ-45 MDI-X port.

Figure 4-3

. Multiple Hub Configuration Using a Crossover Cable

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Configurations

4-4

Using the BNC Port

You can link the 1009B hub with other hubs using the BNC port on the back
panel. The BNC port accepts thin coaxial cable (10Base2). A Thin Ethernet
segment can extend up to 185 meters and connect up to 30 nodes. However, an
Ethernet trunk can contain no more than three coaxial segments if each extends
up to the maximum length (allowed for Thin Ethernet).

Figure 4-4

. Linking Hubs Using the BNC Port

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4-5

Guidelines for Multiple Hub

Configuration

In a multiple hub configuration, the maximum limit between any two
workstations is five cable segments and four hubs based on IEEE 802.3
recommendations. In the following example, if Workstation A sends a message
to Workstation B, there can be up to four hubs in the path between them.
However, if all your hubs are from Compaq, the maximum limit between two
workstations is six cable segments and five hubs.

To control the number of hubs in a path, we recommend that you use one hub to
connect to several other hubs. By using a star configuration, you can link more
workstations together in a network than would be possible with an uplink
configuration. Be sure there is only one path between any two workstations on
the network to avoid the corruption of data.

Figure 4-5

. Multiple Hub Configuration

Compaq Netelligent 1009B 10Base-T Hub User Guide

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A-1

Appendix A

Troubleshooting

Diagnosing Hub Indicators

You can easily monitor the Netelligent 1009B hub using its comprehensive
front panel LED indicators. These indicators help you identify problems the hub
may encounter. This section describes common problems and possible
solutions. If these suggestions do not solve your problem, contact your Compaq
Authorized Reseller.

Symptom: Power indicator does not light.
Cause: Defective power supply or Power LED.
Solution: Have the hub’s power supply or Power LED replaced.
Symptom: Port Partition LED lights yellow.
Causes:

1. Hub has partitioned RJ-45 or BNC port.

2. Workstation’s network adapter, cable or hub port is defective.

3. If BNC cabling is used, the BNC connector may not be terminated.

Solutions:

1. If port partitioning has occurred, the hub automatically enables the port

when the fault is corrected.

2. The most common cause of disconnection from a network or port

partitioning is a defective network adapter or cable connection. Check
the corresponding cable connections or the workstation’s network
adapter for possible defects. Replace the defective cable or adapter.

3. If a BNC cable connection is used, be sure the open ends of the BNC

seg m e n t a r e p r o p e r l y t e r m i n a t e d with 50-ohm terminators.

: The BNC Partition LED also lights if the BNC port is not used (that is, no BNC cable

NOTE

connected). Ignore the BNC Partition LED if you did not connect a BNC cable.

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Appendix A: Troubleshooting

A-2

System Diagnostics

Installation

Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning, test them in an alternate environment
where all the other components are functioning properly.

Cabling

1. Verify that the cabling type is correct. Be sure all cable connectors are

securely seated in the required ports. Straight-through cable should be
used for all standard twisted-pair connections.

2. When linking two hubs using RJ-45 station ports at both ends of the

cable (that is, not an uplink configuration), be sure you use a crossover
cable. You should use crossover cable only if the uplink port is not
available on either hub.

3. When using thin Ethernet (BNC) cabling, be sure both ends are closed

off with 50-ohm terminators.

4. Be sure all devices are connected to the network. Equipment may have

been unintentionally disconnected from the network.

External Adapters

1. Be sure the network adapter cards installed in the workstations are in

good working condition.

2. Be sure the media transceivers are functioning properly and the SQE test

has been disabled for all transceivers attached to the hubs.

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A-3

Configuration

If problems occur after altering the network configuration, restore the original
connections and try to track the problem down by implementing the new
changes, one step at a time. Ensure that cable distances, repeater limits, and
other physical aspects of the installation do not exceed recommendations.

Hub Integrity

As a last resort, verify the hub’s integrity with a power-on reset. Turn the power
to the hub off and then on. If the problem still persists and you have completed
all the preceding diagnoses, then contact your Compaq Authorized Reseller for
further assistance.

Compaq Netelligent 1009B 10Base-T Hub User Guide

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B-1

Appendix B

Port and Cable Pin Assignments

Figure B-1

4,5,7,8 Not Used Not Used

Table B-1

. RJ-45 Connector (hub side)

Pin MDI-X Assignment

(Port 1 ~ 8)

1 Input Receive Data + Output Transmit Data +

2 Input Receive Data - Output Transmit Data -

3 Output Transmit Data + Input Receive Data +

6 Output Transmit Data - Input Receive Data -

. RJ-45 Pin Assignments

MDI Assignment

(UPLINK Port)

Schematics for both straight and crossover twisted-pair cable are shown below.

Straight-Through Crossover

(Hub) (Adapter) (Hub) (Hub)

1 IRD+ 1 OTD+ 1 IRD+ 1 IRD+
2 IRD- 2 OTD- 2 IRD- 2 IRD­3 OTD+ 3 IRD+ 3 OTD+ 3 OTD+
6 OTD- 6 IRD- 6 OTD- 6 OTD-

Chris Seiter

Writer:

Appendix B: Port and Cable Pin Assignments

Project:

Compaq Netelligent 1009B 10Base-T Hub User Guide

Comments:

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Appendix B: Port and Cable Pin Assignments

B-2

BNC Port

The BNC Port provides a way to interface with 10 Mb/s coaxial cable (Thin
Ethernet) via an internal transceiver. Thin Ethernet is typically used as a bus
type network backbone. If you install Thin Ethernet cable, remember to close
off both ends with a 50-ohm terminator. A T-type connector and 50-ohm
terminator are provided with the 1009B hub.

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C-1

Appendix C

Specifications

Transmission Technique Baseband
Access Method CSMA/CD, 10Mb/s
Standards Conformance IEEE 802.3 10Base-T, 10Base2
Media Supported Category 3,4,5 twisted-pair cable*, or Thin

Ethernet

Interfaces Eight RJ-45 ports, 1 RJ-45 UPLINK port,

and one BNC port

Dimensions 1.04 x 8.26 x 4.58 inches (2.67 x 21.17 x

11.74 cm)

Power Requirements 7.5V AC, 50/60 Hz, 6.5watt. (Power

adapter 7.5V ~ 12V AC, 8VA for

100V/120V/220-230V/240V)
Temperature 0°C to 50°C (Standard Operating)
Humidity 5% to 95% (Noncondensing)
Certification

Emissions: FCC Class B*, VCCI Class B, CISPR

Class B, BZT Class B

Safety: UL, CSA, TÜV/GS

* Using UTP cable meets EMI requirements only for Class A. Use STP cable if you
need to meet the EMI requirements for Class B.

Network Specifications

Topology Tree (Backbone or Star)
Hub-to-Workstation Distance 100 meters maximum using twisted-pair

Number of Interconnected Hubs Five (maximum, using all Compaq hubs)

cable

Compaq Netelligent 1009B 10Base-T Hub User Guide

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D-1

Appendix D

Regulatory Standards Compliance

EMI Warning

FCC Class B Certification
Compaq Computer Corporation
Model Number: 1009B

This device complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference

that may cause undesired operation.

WARNING:

limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses and

can radiate radio frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not

occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from the one

which the receiver is connected to

• Consult the dealer or an experienced radio/TV technician for help

Use only shielded cable to connect I/O devices to this equipment.

This equipment has been tested and found to comply with the

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Appendix D: Regulatory Standards Compliance

D-2

You are cautioned that changes or modifications not expressly approved by the
party responsible for compliance could void your authority to operate the
equipment.

WARNING:

to prevent electrostatic discharge whenever handling this equipment.

NOTE:

Compaq requires that you use a quality interface cable when connecting to this

device. Changes or modifications not expressly approved by Compaq could void the

users authority to operate this equipment. Suggested cable type is:

• Twisted-pair for RJ-45 connections: 10Base-T

• Thin Ethernet (50 ohm) for BNC connections: 10Base2

In order to maintain compliance with the limits of a Class B digital device,

BZT Class B Compliance

Hiermit wird bescheinigt, dass der 1009B adapter in Übereinstimmung mit den
Bestimmungen der Vgf 243/1991 funk-entstört ist.

Der deutschen Bundespost wurde das Inverkehrbringen dieses Gërates
angezeigt und die Berechtigung zur Überprünfung der Serie auf Einhaltung der
Bestimmungen eingeräumt.

Wear an anti-static wrist strap or take other suitable measures

We hereby certify that the 1009B adapter comply with the RFI Suppression
Requirements of Vfg 1046/1984. The German Postal Service was notified that
the equipment is being marketed. The German Postal Service has the right to
retest the equipment and to verify that it complies.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D-3

VCCI Class B Compliance

This product also complies with CISPR22 Class B (EN55022 Class B).

EN55022 Declaration of Conformance

This is to certify that the Compaq Netelligent 1009B 10Base-T Hub is shielded
against the generation of radio interference in accordance with the application
of Council Directive 89/336/EEC, Article 4a. Conformity is declared by the
application of EN55022:1987 Class B (CISPR 22:1985/BS 6527:1988).

Compliance with the applicable regulations is dependednt upon the use of
shielded cables.

You may use unshielded twisted-pair (UTP) cables for RJ-45 connections, but it
complies with EN55022 class A (CISPR Class A)

Compaq Netelligent 1009B 10Base-T Hub User Guide

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I-1

Index

A

Automatic partitioning 1-1
Automatic polarity detection 1-1

B

BNC port 1-1, 2-3, 2-5, 2-6, 3-2, 3-3,

4-4, B-2

C

Cable

crossover 3-2, 4-3
maximum distance 4-1
pin assignments B-1

straight-through 3-2
Cable length, maximum 3-2
Cable pin assignments 4-2, B-1
Category 3 4-1
Coaxial cable 2-6, 4-4
Coaxial segments 2-6, 4-4
Collision

LEDs 2-3

levels 1-1
Compliance

regulatory D-1

safety D-5
Configuration

guidelines for multiple hubs 4-3

multiple hub 4-2

stand-alone 4-1

star 4-5
Configurations 4-1
Connecting hub 3-2
Crossover cable 4-3

D

Diagnostics

LED A-1
system A-2

E

Electrical specifications 3-1
Electromagnetic radiation 2-7
Ethernet 2-1

BNC trunk port 3-2
cable 2-6
devices 2-6
frames, transmission of abnormal

1-1
hub 1-1
segment 2-6
trunk 3-2, 4-4

F

Ferrite bead 2-7
Frames 2-2

I

IEEE 802.3 1-1
networks 2-1
recommendations 4-5
repeater specification 1-1
specifications 2-1
standard 4-1, 4-2

J

Jabber lockup protection 1-1
Jack connector 3-2

L

LAN 2-2

bandwidth 2-2

LED display 2-3

Compaq Netelligent 1009B 10Base-T Hub User Guide

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Index

I-2

LED indicator 2-1, 3-3

diagnosing A-1
Link status 3-3
Link/Traffic LED 2-3, 2-5

M

MDI UPLINK port 2-7
Microprocessor 1-1
Multiple hub configuration 4-2

N

Network interface cards 3-2
Network utilization 1-1, 2-2

P

Partition

indicator 3-3

LED 2-3, 2-4
Partition/Link Traffic LEDs 2-4
Pin assignments B-1
Power

connector 3-3

function 2-1

LED indicator 3-3

System diagnostics

cabling A-2
configuration A-3
external adapters A-2
hub integrity A-3
installation A-2

T

Terminator 2-6
Thin Ethernet

segment 4-4

trunk 3-2
Traffic condition 2-5
Transceiver 3-2, 3-3

BNC 2-6
Troubleshooting A-1
T-type connector 2-6
Twisted-pair cable 4-3

U

UPLINK port 2-7, 3-2, 4-2
Utilization LEDs 2-2, 2-3
Utilization/Collision indicators 2-2

V

R

Regulatory compliance D-1
Requirements, site 3-1
RJ-45

connectors (plugs) 2-3, 2-5, 2-6,

3-2, 3-3
MDI-X ports 2-6, 4-3
UPLINK port 4-1

S

Specifications C-1
Star configuration 4-5

Ventilation 3-1

©1997 Compaq Computer Corporation.All rights reserved.
Compaq Registered U.S.Patent and Trademark Office.
Company and product names mentioned herein may be
trademarks and/or registered copyright and trademarks of
their respective companies.