GarrettCom MAGNUM H80B User manual

GARRETT
GARRETT
Corporate Headquarters:
Garrett Communications
213 Hammond Avenue
Fremont, CA 94539
Phone: [phone]
Fax: [phone]
Email: [email protected]
Magnum
Personal Hubs
Models H80B and H80P
Installation and User Guide

Magnum H80B and H80P Personal Hubs User Guide (07/95)
GARRETT
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Magnum


Personal Hub


Models H80B and H80P
Installation and User Guide
Part #: 84-00037 (07/95)
Trademarks
UL is a registered trademark of Underwriters Laboratories
Ethernet is a trademark of Xerox Corporation
Velcro is a trademark of Velcro U.S.A.
Personal Hub and Magnum are trademarks of Garrett
Communications, Inc.
Important: Magnum Personal Hubs contain no user serviceable
parts. Attempted service by unauthorized personnel shall render any
and all warranties null and void. If problems are experienced with a
Magnum Personal Hub, consult Section 5, Troubleshooting, of this
User Guide.
Contacting Garrett Communications
Please use the mailing address, phone and fax numbers and email
address listed below:
Garrett Communications
213 Hammond Avenue
Fremont, CA 94539
Phone: [phone]
Fax: [phone]
Email: [email protected]
1995 Garrett Communications, Inc. All rights reserved. No part of this
publication may be reproduced without prior written permission from Garrett
Communications, Inc.
Printed in the United States of America.

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TABLE OF CONTENTS Page
1.0 SPECIFICATIONS........................................................... 1
1.1. Technical Specifications .................................................... 1
1.2 Ordering Information .......................................................... 3
2.0 INTRODUCTION............................................................. 4
2.1 Inspecting the Package and Product.................................... 4
2.2 Product Description ............................................................ 5
2.2.1 Magnum H80B Product Description....................... 6
2.2.2 Magnum H80P Product Description ....................... 8
2.3 Features and Benefits........................................................ 10
2.4 Applications...................................................................... 11
3.0 INSTALLATION.................................................................. 14
3.1 Magnum H80B Installation............................................... 14
3.2 Magnum H80P Installation............................................... 15
3.3 Table-Top or Shelf Mounting .......................................... 15
3.4 Wall (or Vertical Surface) Mounting ................................ 16
3.5 Ethernet Media Connections............................................. 17
3.5.1 Twisted Pair Segment Connections....................... 17
3.5.2 AUI Connections (Model H80P only)................... 18
3.5.3 ThinNet 10BASE2 (BNC) Connections................ 19
3.6 Switchable Up-Link Feature ............................................. 20
3.7 Cascading Personal Hubs with the Up-Link Port.............. 21
4.0 OPERATION.................................................................. 22
4.1 Functional Operation, Use of LED Indicators................... 22
5.0 TROUBLESHOOTING.................................................. 24
5.1 Before Calling for Assistance............................................ 24
5.2 When Calling for Assistance............................................. 25
5.3 Return Material Authorization (RMA) Procedure............. 25
5.4 Shipping and Packaging Information................................ 26
APPENDIX A: WARRANTY INFORMATION.......................... 27
Federal Communications Commission
Radio Frequency Interference Statement
This equipment generates, uses and can radiate frequency
energy and if not installed and used properly, that is in strict accordance
with the manufacturer's instructions, may cause interference to radio
communication. It has been tested and found to comply with the limits
for a Class A computing device in accordance with the specifications in
Subpart J of Part 15 of FCC rules, which are designed to provide
reasonable protection against such interference when operated in a
commercial environment. Operation of this equipment in a residential
area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be required to
correct the interference.

MAGNUM
ETHERNET CONNECTIVITY PRODUCTS
"DESIGNED AND MANUFACTURED IN THE USA"
Overview
Garrett Communications offers the Magnum line of Ethernet LAN
physical layer connectivity products with industry-standard
functionality. Magnum products are available worldwide through
OEMs, integrators, representatives, and international distributors.
Stackable Hubs, SNMP Optional
24-Port 10BASE-T Hub
12-Port 10BASE-T Hubs
Local Bridge with SNMP
Local Bridge, full-featured, self-learning
The "X-line" of configurable MiXed Media products
Stackable Concentrators, SNMP optional, 13 ports
Mini-Concentrators, 7 ports
Workgroup Bridges, all media types
Two-Port Repeaters, internal power supply, all media types
Two-Port Repeaters, external power supply, all media types
Repeater Port Modules (RPMs), 6 types for all Ethernet media
Bridge Port Modules (BPMs), 4 types for segment isolation
Workgroup Hubs ( the "ten" series)
8-port + AUI or Port Module option
16-port + AUI and Port Module slot
24-port + AUI and Port Module slot
Personal Hubs 


9-port and 5-port Personal Hubs, with manual up-link switch
8-port and 4-port + AUI Personal Hubs, w/ man. up-link sw.
8-port + BNC Personal Hub, w/ manual up-link switch
Stackable 8-port +AUI and BNC or Fiber, w/ up-link switch
Media Converters
Two RJ-45 Models, with BNC or Fiber
Fan-Outs
4 and 8 Port Deluxe, 2 and 4 Port Standard Models
Transceivers
Coax and Mini-Transceivers, All Types July '95

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1.0 SPECIFICATIONS
1.1. Technical Specifications
Performance:
Data Rate: 10 Mbps
Partitioning: Enforced after 32 consecutive collisions.
Reconnect: Occurs after 512 bits error-free transmission.
Maximum Ethernet Segment Lengths:
10BASE-T (Unshielded twisted pair) - 100 m (328 ft)
10BASE-T (Shielded twisted pair)- 150 m (492 ft)
AUI Drop Cable - 50 m (164 ft)
10BASE2 ThinNet (BNC) - 185 m (607 ft)
Network Standards:
Ethernet V1.0/2.0 IEEE 802.3: 10BASE-T, 10BASE5.
(Magnum Personal Hubs are physical layer standard
Ethernet products, and operate in networks independently
of all software.)
Operating Environment:
Ambient Temperature:32ºF to 122ºF (0ºC to 50ºC)
Storage Temperature:-20ºC to 60ºC
Ambient Relative Humidity:10% to 95% (non-condensing)
Power Supply (External) (H80B, optional for H80P):
Power Input: 95 - 125 vac at 60 Hz for "-d" Models,
200 - 250 vac at 50 Hz for "-i" Models, which
have IEC power cable connector in the external
power unit.
Power Consumption: 10 watts max
Connectors:
H80B: 8 front-mounted shielded RJ-45 (1 with up-link
switch), 1 rear BNC with internal termination
switch.
H80P: 8 front-mounted shielded RJ-45, 1 rear
DTE (male AUI)
(Shielded 10BASE-T connectors accept either unshielded or
shielded wiring lugs for standard twisted pair media wiring.)
The regular RJ-45 ports support the standard for hubs-to-users twisted pair
wiring: pin 1= receive+, 2 = receive-, 3 = transmit+, 6 = transmit-, other pins
not used. The RJ-45 port with the MDI-X switch is normally the same, but
when switched it supports the standard for up-links using twisted pair wiring,
i.e., the transmit and the receive pairs are exchanged: pin 1 = transmit+, 2 =
transmit-, 3 = receive+, 6 = receive- , other pins not used.

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Switches:Up-Link: MDI-X (Media Dependent Interface -
Crossover) manual slide switch, converts RJ-45 port #8
from a regular (=) user segment port to a crossover (X)
up-link port for on-off connection to a backbone or another
cascaded hub.
Internal Termination (H80B only): Allows BNC
conneciton without use of "T" connector. Right position --
internal termination, no "T" required. Left position --
external termination via "T" connector required.
Packaging:
Enclosure: Rugged, high strength steel enclosure.
Suitable for vertical or horizontal mounting
(supplied with metal mounting clips, screws,
and a Velcrostrip)
Recessed LEDs to avoid damage.
Dimensions:
H80B, H80P: 4.4in x 5.0in x 0.75in
(11.2cm x 12.7cm x 1.9cm )
Weight: H80B and H80P: 1.0 lbs (455 gr);
Power Supply: 1.0 lbs (455 gr)
Cooling method:
Convection
Agency Approvals:
115v 60 Hz Power Supply is UL Listed, CSA certified.
230v 50 Hz Power Supply is same, also GS approved.
Emissions: Meets FCC Part 15 Class A
Warranty:
Three years (see also Appendix A) Made in USA

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1.2 Ordering Information
Magnum Personal Hubs
MODEL DESCRIPTION
Magnum H80B-d Personal Hub with eight standard
RJ-45 ports, one with up-link switch,
plus one BNC port with internal
termination switch, external 115 vac
60 Hz power supply.
Magnum H80A-i Same as H80B-d, but with external
230 vac 50 Hz power supply.
Magnum H80P AUI powered Personal Hub with
eight standard RJ-45 ports, one with
up-link switch, plus one rear DTE
(maleAUI) port.
Magnum Personal Hubs Spare Parts
MODEL DESCRIPTION
H80-d-ps External 115 vac 60 Hz power supply.
H80-i-ps External 230 vac 50 Hz power supply.
Garrett Communications reserves the right to change specifications,
performancecharacteristics and/or model offerings without notice.

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2.0 INTRODUCTION
This section describes the Magnum H80B and H80P
Personal Hubs, including appearance, features and possible
applications.
2.1 Inspecting the Package and Product
Examine the shipping container for obvious damage prior
to installing this product; notify the carrier of any damage which you
believe occurred during shipment or delivery. Inspect the contents of
this package for any signs of damage and ensure that the items listed
below are included.
This package should contain:
1 Magnum H80B or H80P Personal Hub
1 External Power Supply, either 115v 60 Hz or
230v 50 Hz (H80B only)
1 Velcro® Tape section, approximately 3 inches in
length
1UserGuide
1 Product Registration Card
Remove the Magnum Personal Hub from the shipping
container. Be sure to keep the shipping container should you need to
ship the unit at a later date. To validate the product warranty please
complete and return the enclosed Product Registration Card to
Garrett Communications as soon as possible.
In the event there are items missing or damaged, contact
your supplier. If you need to return the unit, try to use the original
shipping container. Refer to Section 5, Troubleshooting, for specific
return procedures.

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2.2 Product Description
The Magnum H80B and H80P Personal Hubs are nine-port
workplace hubs in a very compact package. They are simple to
install and use in an office or lab environment, requiring no special
rack cabinets or wiring closet apparatus. Personal Hubs are standard
physical layer Ethernet products and operate independently of all
software.
Personal Hubs fit easily into the workplace environment.
They are versatile enough to be table-top or shelf-mounted.
Alternatively, a Velcrostrip is included in the package so that the
unit may easily be installed on a wall surface, or on the back or side
of a desk or cabinet. All of the wiring connectors are in the same
plane so that wiring space is neat and minimal. The external power
supply unit (optional for the H80P) conveniently plugs into an AC
wall receptacle or power strip.
The H80B and H80P Personal Hubs' RJ-45 ports support
connection of up eight workstations or other network devices over
full length 10BASE-T cable segments. Personal Hubs operate in
compliance with the IEEE 802.3 specification for repeater
functionality to perform signal amplification, re-timing of data
packets, and regeneration of preamble bits for each packet received.

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Consistent with IEEE 802.3 specifications, Personal Hubs will detect
collisions, extend collision fragments, and automatically partition
and re-connect individual ports in order to keep problems on one
segment from causing downtime elsewhere on the network.
Personal Hubs include LINK and RX LEDs, located on top
of the unit above each RJ-45 port, and one LED for DC power
located at the rear near the external power supply connection. For
observing operational information from the LEDs, it is easy to
associate the status LEDs for each of the ports with the appropriate
port plug.
2.2.1 Magnum H80B Product Description
Magnum H80B Personal Hubs provide a simple and
inexpensive solution for networking a personal multi-system office
using 10BASE-T twisted pair cabling. They are perfect for sites that
have ThinNet installed and need to wire additional office space for
twisted pair.
Magnum H80Bs are also well suited for small- to-medium-
size office or lab environments (up to eight persons) that need an
independent Ethernet network. They operate as self-sufficient units

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to provide ThinNet and 10BASE-T Ethernet connectivity for local
users and devices. Small independent networks built using Personal
Hubs are easily expanded by adding hubs of equal or greater capacity
via cascaded connections using the Up-Link switched port feature.
The BNC port of the H80B provides 10BASE2 backbone
connectivity if required.
The H80B's small size makes it very useful for
demonstration situations in conference rooms and in exhibitions
where a temporary network or network expansion is needed. It is
handy as a piece of test equipment that can be easily inserted into a
network to provide a test port, and then removed after the testing is
done. The H80B Personal Hub takes up minimal space, uses
minimal power, and is rugged enough to be carried in a coat pocket
for possible emergencies.
The external power supply unit supplied with the H80B is
one of two types; one version for AC input power of 115 vac 60 Hz,
and one version for 230 vac 50 Hz. The 115 vac version has a small
transformer integral with a convenience power outlet plug. The 230
vac version has a small transformer integral with an IEC-type power
plug for a user-supplied AC power cord with a convenience power
outlet plug. Both types include a lightweight DC power cord for
connection to the Personal Hub's power jack.

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2.2.2 Magnum H80P Product Description
Magnum H80P Personal Hubs provide a simple and
inexpensive solution for expanding a single AUI port into an eight
port hub. Since the H80P receives power through its DTE (male
AUI) port, it may be installed in virtually any location, without
worrying about access to a power outlet. To the server, router or
other device to which it is connected, the Magnum H80P appears as
a standard transceiver. The rear DTE port of the unit allows for
direct drop cable connection to any AUI port.
As an option, the H80P may be powered by an external
power suppy (see Spare Part Ordering information, Section 1.3).
When used for redundancy, the external supply retains local
connectivity in the event of a power outage on the AUI segment. In
addition, the external power supply allows the H80P to function as a
standalone unit.
NOTE: Since the Magnum H80P receives its power from
the rear DTE port, this port must be connected to the AUI
port of another Ethernet device to allow the H80P to
operate, unless the opitonal external power supply is used.

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The H80P's small size makes it very useful for situations
where a temporary twisted pair network is needed, and only AUI
ports are available. It is handy as a piece of test equipment that can
be easily inserted into an AUI backbone to provide a test port, and
then removed after the testing is done. The H80P Personal Hub
takes up minimal space, uses minimal power, and is rugged enough
to be carried in a coat pocket for possible emergencies.

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2.3 Features and Benefits
■
■■
■Interconnect to an Existing Ethernet Network
Personal Hubs provide a manual Up-Link switch that
allows one RJ-45 port to be to connect into an existing
Ethernet environment (such as the central hub for the
building or area) via 10BASE-T wiring.
■
■■
■Inter-operable with other Ethernet Devices
Personal Hubs are completely inter-operable with other
Ethernet-compliant network devices. Each is fully
compliant with IEEE 802.3 specifications for 10 Mbps
CSMA/CD operation. This allows Personal Hubs to be
integrated within any standard Ethernet network and to
operate with standard software.
■
■■
■Installation Versatility
Personal Hubs are simple and easy to install in most any
office or lab location. The tiny package is very
unobtrusive and is typically mounted with Velcro.
■
■■
■Robust Network Operations
Personal Hubs use the "star" network topology and have
automatic per-port partitioning and re-connection. A fault
on one segment is isolated from the rest of the network,
avoiding most network downtime.
■
■■
■LEDs Simplify Network Installation and Maintenance
Personal Hubs are equipped with a full complement of
LEDs to provide status about basic network activity.
LINK LEDs for each port offer a simple way for
operational connections of each 10BASE-T segment to be
verified.
■
■■
■Low cost, stand-alone 10BASE-T connectivity
Operating in a stand-alone environment as a self-sufficient
device, Personal Hubs offer a very low cost method of
providing small workgroups access to a variety of Ethernet
networking services such as file sharing, E-Mail, printer
sharing, and other computer information.
■
■■
■High Quality
Personal Hubs have a rugged steel case and are compliant
with rigid Class CE emission standards, making them
suitable for commercial and home offices.

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2.4 Applications
Magnum H80P and H80B Personal Hubs make expansion
from one to multiple ports at an existing site easy, and do not require
modification to typical building wiring.
Installation of the AUI powered H80P is a simple matter of
connecting the rear DTE port to a standard AUI port (normally with
an AUI drop cable), instantly creating eight twisted pair user ports
from a single AUI port.

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The Magnum H80B offers a simple means of creating a
small workgroup network from a single BNC port. The installer
simply connects the existing BNC tap to the BNC port of the H80B
with a standard ThinNet (10BASE2) segment. By using the internal
termination of the H80B, no "tee" conector is required (unless the
segment must extend beyond the H80B unit). Then, power is
connected by plugging the external power supply unit into an AC
power receptacle, and plugging the DC power plug into the jack on
the back of the Personal Hub. In minutes, eight twisted pair ports are
available for other networked devices.

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The H80B Personal Hub may also be used as a stand-alone
network for a local multi-user system such as shown in the figure.
The BNC port is used to support devices connected via ThinNet,
while the RJ-45 ports support up to eight user devices connected via
twisted pair. Full-length Ethernet segments are supported on all
segments. In this application, the "Up-Link" switch is in the straight-
through or = position so that the switchable up-link port is a user
port, not an up-link to another hub.

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3.0 Installation
This section describes the installation of Magnum H80B
and H80P Personal Hubs, including mounting options and cable
connections.
3.1 Magnum H80B Installation
The installation of a Magnum H80B Personal Hub is a very
simple procedure. Locate an AC receptacle that is within six feet (2
meters) of the intended hub location and plug in the external power
supply unit (provided as part of the unit). The small DC power cord
from the power supply plugs into the matching rear power jack of the
Personal Hub, and when power is applied the green "PWR" LED will
be illuminated.
The external power supply unit supplied is one of two
types; one version for AC input power of 115 vac 60 Hz, and one
version for 230 vac 50 Hz. Examine the power supply to make sure
the version you have is the right type for your AC power system.
The 115 vac version has a small transformer integral with a
convenience power outlet plug, and a lightweight DC power cord to
the applicable power jack on the hub. The 230 vac version has a
small transformer integral with an IEC-type power plug for a user-
supplied AC power cord with a convenience power outlet plug. It
also includes a lightweight DC power cord to the applicable power
jack on the Personal Hub unit.

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3.2 Magnum H80P Installation
Installation of the Magnum H80P Personal Hub is a simple
procedure. Since the unit receives power from its rear DTE port, it
can be located virtually anywhere. The H80P is typically connected
to another Ethernet device through an AUI drop cable. For AUI
connection instructions, refer to Section 3.5.2.
It is also possible to connect an external power supply
(refer to Spare Part Ordering Information, Section 1.3, for model
names). This is useful in cases where a redundant supply is desired
or the topology of the network has changed and the DTE port is no
longer being used. When using an external power supply, the unit
will still receive its power from the AUI connection as long as the
port is connected and supplying suitable power. Should a power
outage occur on the AUI segment, the external power supply will
continue to supply power, maintaining connectivity amongst local
users. Refer to Section 3.1 for external power supply connection
instructions.
3.3 Table-Top or Shelf Mounting
Personal Hubs are easily mounted on a table-top or shelf,
and have four rubber feet to provide stability without scratching
finished surfaces. A piece of Velcro may be used to add additional

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stability if desired. When properly installed, the top-view LED status
indicators will be in plain view and easy to read. Plug in two or
more Ethernet cable segments, and your network is in operation.
The rugged steel case of the Personal Hub will protect it
from accidental damage in an office or lab workplace setting. Keep
an open area around the unit so that convection cooling can occur
while the unit is in operation.
3.4 Wall (or Vertical Surface) Mounting
A piece of Velcro mounting tape is supplied with the unit,
and may be used to mount a Personal Hub in a vertical position.
Stick one side of the Velcro on the bottom of the hub between the
rubber feet. Stick the other side of the Velcro to the desired vertical
mounting location. This permits the compact Personal Hub to be
mounted on a wall surface, on the side of a server unit cabinet, on the
back of a desk, or in other similar convenient locations in the
workplace where the associated cables are out of the way.
As an alternative to Velcro for vertical surface mounting,
small brackets for mounting with screws may be used. These items
are included in the package. The metal screws in each side of the
Personal Hub’s case may be used to attach the brackets. Use of the
optional brackets permits the Personal Hub to be mounted in almost
any desired orientation or position.