Western Digital EtherCard PLUS10T/A User manual

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Western Digital Corporation
2445 McCabe W:tjr,
Irvine, California 9)-714
(soo) 847-6181 (714If63-0102
FAX [phone] TLX 910-595-1139
EtherCard PLUSlOT/AM
High Performance Micro Channel lOBASET
Compatible LAN Adapter for Twisted Pair Networks
For information on WD Communications Products
Call: 1-800-NET LEADER (1-800-638-5323) in U.S.A.
1-800-448-8470 in Canada
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WESTERN DIGITAL
WD0068C
79-000462

LIMITED WARRANTY
WESTERN DIGITAL CORPORATION (WDC) expressly warrants
.that it will either repair or replace, on the terms described below,
this WD Peripheral Product if it proves to be defective in design,
material, or workmanship in the course of its normal use, within
one (1) year from the Buyer's date of purchase from an authorized
WDC dealer.
For warranty repair or replacement, the defective Product must
be returned within one (1) year to an authorized WDC dealer or
the WDC service center either in person or by insured mail
packaged in the original container, accompanied by proof of
purchase.
Arepaired or replacement Product shall be warranted as above
for the balance of the original Product Warranty Period or ninety
(90) days, whichever is longer.
The normal intended use of the Product is as computer peripheral
equipment in accordance with the functional, environmental and
operational standards published by WDC or generally accepted
in the industry. WDC shall have no obligation with respect to any
Product which has been modified or altered, or with respect to lost
data or data contained in any Product placed in its possession.
WDC's liability to Buyer or anyone claiming through or on behalf
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must be presented to WDC within ninety (90) days following
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This limited warranty is WDC's sole warranty. WDC makes no
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In the United States, some states do not allow exclusion or
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state to state.
Ethernet 10BaseT User Guide
High Performance
Ethernet Network Adapter Board
For 1OBaseT Twisted-Pair Wiring
Micro Channel Bus-Compatible
Document Number: 79-000462-000

Radio Frequency Interference Statement
This product has been verified to comply with the limits for
aClass Acomputing device pursuant to subpart Jof Part
15 of FCC rules. This does not guarantee that interference
will not occur in individual installations. The manufacturer
is not responsible for any television, radio, or other interfer-
ence caused by unauthorized modifications of this product.
If interference problems do occur, please consult the sys-
tem equipment owner's manual for suggestions. Some of
these suggestions include relocation of the computer sys-
tem away from the television or radio or placing the
computer AC power connection on a different circuit or
outlet.
Information furnished by Western Digital Corporation is believed to be accurate as
of the date of publication. Western Digital Corporation reserves the right to
change specifications at any time without notice.
Trademarks mentioned herein belong to their respective companies.
Copyright ©1990 Western Digital Corporation. All rights reserved worldwide. ?o
part of this publication may be reproduced in any form without express written per-
mission from Western Digital Corporation.
65-001294 3/90
Table of Contents
Introduction ........................................ 1
Using This Manual 1
Adapter Features 2
Driver Diskette 2
Network Environment 3
Concentrators 3
Installation and Setup 5
Adapter Board Preparation 5
Factory Jumper Settings 5
W21 -Link Integrity Test 6
LED Indicators 7
Memory Space Requirements 8
System Unit Configuration 9
Hardware Configuration ............ .......... . . . 1O
Automatic Configuration .. . ...... . ....... . .... . . . 12
Manual Configuration ............. . ............ . 12
Completing the Installation 14
Network Interconnection 15
10BaseT Twisted-Pair Cabling 15
10BaseT Twisted-Pair Port 15
10BaseT Twisted-Pair Interconnection 16
Link status ............................ . 16
Using existing phone cable . .. ......... . . . . 17
Interface cable wiring 18
Wiring closet termination 19
Using StarLAN 1OConcentrators 20
Standard Ethernet Network Port 20
Ethernet Coaxial Cabling 20
Ethernet Interconnection 21
Diagnostic Test Program 23
Appendix A- Installation Options A-1
ROM Installation ............................ . A-1
ROM Size Selection -W9, W1 OA-2
Table of Contents

Introduction
Appendix B- Network Cable and Components B-1
Ethernet Network Components B-1
.1OBaseT Twisted-Pair Cable B-2
Thick Ethernet Cable and Components B-3
Appendix C-Troubleshooting C-1
General C-1
Technical Assistance C-2
Appendix D-Specifications D-1
General D-1
Electrical D-1
Environmental D-1
Physical D-2
System Configuration Chart D-3
The 1OBaseT-compatible Ethernet adapter board is designed for
IBM PS/2 and other Micro Channel-compatible computers. The
adapter connects to alocal area network (LAN) using either stan-
dard Ethernet cable or 1OBaseT twisted-pair wire with
telephone-type modular plugs.
In anetwork, the adapter will interoperate with most other
Ethernet adapters that comply with the IEEE 802.3 (10Base2,
1OBase T, and 10Base5) Ethernet standards.
Using This Manual
This user installation guide provides information on setting up
and installing the Ethernet Micro Channel adapter board for
1OBase Ttwisted-pair wiring. You can save time by reading these
instructions before installing the adapter board. Information is
provided to help you avoid some common problems such as
hardware conflicts and interconnecting cable that is incorrectly
wired. A"Troubleshooting" section is provided to help resolve
problems. Network cable information is provided in the "Network
Cable and Components" Appendix.
ii Table of Contents Introduction 1

Adapter Features
•Micro Channel-compatible.
•_10BaseT twisted-pair and AUi Ethernet network ports.
•High performance LAN controller device.
•Dual-ported 16 Kbyte random access memory (RAM) buffer.
•No direct memory access channels (DMA) required.
•On-b?ard, non-volatile memory and programmable option
selection feature replaces most jumpers to simplify
instai lati on.
•Soc_ket provided for an optional read only memory (ROM)
device. Aboot ROM may be used in this socket.
•The adapter automatically determines whether to use the
RJ-45 or AUi network connector based on which cable the
user connects. No jumper changes are required if the cable
is changed.
•"Link status" and "polarity correction" LED indicators are
provided adjacent to the twisted-pair modular network port.
When the computer power is on, the link status LED is lit if
anormal connection exists between the adapter board and
aconcentrator. The polarity correction LED is lit if the
twisted- pair wiring polarity on the receive pair is not
reversed. If the polarity is reversed, the adapter
automatically corrects the reversal and functions normally.
Driver Diskettes
The driver diskettes contain areadme.doc file, software driver
programs, and ahardware diagnostic program for this and other
LAN adapters. Refer to the readme.doc file for alisting of net-
wo?k opera?ing sy?tems that are supported by the adapter and
for mfo_rmat1on on installing the software driver programs. The di-
agnostic program on the diskettes is used to check the adapter
and network cabling when installation and configuration is 'com-
plete.
Network Environment
The adapter board is designed for use in a1OMbps 10BaseT
twisted-pair wire network environment. This type of network has
the same data throughput as a standard, coaxial-cabled,
Ethernet LAN but uses unshielded telephone-type cables. The
1OMbps twisted-pair wire network uses any 10BaseT compatible
concentrator.
The adapter board can be used to do the following:
•Set up atwisted-pair network using telephone-type wire.
•Add computers using 1OBase Ttwisted-pair cable to an
Ethernet network.
•Operate as an Ethernet LAN adapter board in astandard
Ethernet network.
Concentrators
When used with twisted-pair cable, the adapter must connect to
aconcentrator. This results in astar-wired network with the con-
centrator at the center of the star. The adapter is compatible with
10BaseT concentrators from avariety of vendors.
The adapter is also compatible with the AT&T and Hewlett
Packard "StarLAN 1O" twisted-pair signalling method. StarLAN
10 concentrators that are not 10BaseT-based are compatible
with this adapter by simply changing ajumper on the adapter.
For more information, refer to "W21 -Link Integrity Test" and
"Using StarLAN 1OConcentrators."
2Introduction Introduction 3

Installation and Setup
This section contains the information needed to configure the
adapter board and your computer system for operation. First,
verify and/or change the LAN adapter board configuration. Next,
follow the steps to prepare for the system configuration. Finally,
install the LAN adapter board and configure the system.
Adapter Board Preparation
The following paragraphs provide information on preparing the
LAN adapter board for installation. Do not install the LAN
adapter board yet.
The adapter board provides the following hardware configuration
options:
•Adevice socket: provided for installing an optional ROM,
such as aboot ROM.
•ROM size selection: 16, 32, or 64 Kbytes (jumper options.)
Factory Jumper Settings
The adapter board is preset at the factory and ready to install in
your computer. Before installing the board, verify the factory
jumper settings as shown in Figure 1. If the settings are correct
and no other hardware configuration changes are necessary, go
to the section titled "LED Indicators". If the settings do not match
the configuration shown in Figure 1or if you intend to reconfigure
the adapter board, continue on to the next section.
NOTE
Always handle the adapter board by its edges.
If you have an Ethernet 10BaseT adapter that has an additional
jumper labelled W20 "Polarity Correction'" please leave this
jumper in the factory installed on position (as labeled on the
board).
4Introduction Adapter Setup 5

W10, W9
ROM Size
16 KBytes -27128 Type
W21
Link Integrity Test
Enabled
llllllllllt:.J
º
•? D
[8]5
U1 D
Link Integrity -
and Polarity
Correction LEDs
Transmit Receive
LED LED
L..J?
--
c:-
c?J
G-
?
NOTE
Aconflict will occur if this jumper is installed when the AUi
port is in use.
Enable
Link Integrity
Test 0?W21 I
Disable
Link Integrity c:-13 W21
Test
Ethernet -
AUi Port
Twisted Pair -
RJ-45 Port
Figure 1. Factory Jumper Settings
W21 -Link Integrity Test
With this jumper (see Figure 1) removed, which is the normal set-
ting, link integrity test pulses are transmitted and received ac-
cording to the 10BaseT standard. If this jumper is installed, the
link integrity test is NOT performed (no link test pulses are gener-
ated, and received link test pulses are ignored). The twisted-pair
port (RJ-45) is enabled and the AUi port is disabled.
The adapter board will operate correctly when used in "StarLAN
1O" networks without Link Integrity such as those by AT&T and
Hewlett Packard, even though "StarLAN 1O" without Link Integrity
is not fully 10BaseT compatible. To operate the LAN adapter in
this mode, the link integrity test function must be disabled ·
Uumper installed).
LED Indicators
There are four LED indicators on the adapter bracket and
adapter as shown in Figure 2. These have the following functions:
P-Polarity Correction LED (Green)
This indicator is on when the twisted-pair received signal polarity
is correct and the link is valid (the "L" indicator is on). If this indi-
cator is off when "L" is on, the adapter will still operate properly,
but the received signal polarity is reversed.
L-Link Integrity LED (Green)
This indicator is on when the twisted-pair link is valid (10BaseT
Link Test Pass mode) or when jumper W21 (Link Integrity Test) is
installed. It indicates that the RJ-45 port is being used instead of
the AUi port.
T-Transmit LED (Yellow)
This indicator flashes to show when the adapter is transmitting.
R-Receive LED (Green)
This indicator flashes to show when the adapter is receiving. It
also flashes when transmit data from the adapter is looped back
to the receiver by the on-board twisted-pair transceiver or by an
external transceiver connected to the AUi port.
6Adapter Setup Adapter Setup 7

Transmit Receive
LE?D1fmj
."o?(fl
Polarity Correction tee-Link Integrity
níl -Twisted Pair
WJI RJ-45Port
-AUi Port
Figure 2. Location of LED Indicators on Adapter
Memory Space Requirements
The adapter board can occupy as much as 80 Kbytes of com-
puter memory space with its 16 Kbytes of shared RAM buffer and
a 64 Kbyte ROM installed. Both the shared RAM and ROM de-
vice are located in the memory range C0000 to E0000 (hex).
Note that there is a maximum of 128 Kbytes of total available
RAM for all option boards installed in acomputer. This memory
space is allocated in the range C0000 to DFFFF (hex). If, for ex-
ample, two adapter boards are installed in acomputer and each
is set to use 16 Kbytes of shared RAM and each includes a 16-
Kbyte ROM device, 64 Kbytes of RAM is available for other
option boards.
When configuring the adapter board using the configuration pro-
gram on the Reference Diskette that came with your operating
system, any memory space conflict will be indicated. Anon-
conflicting value must then be specified so that the adapter will
work properly .
System Unit Configuration
Each time an option board is installed or removed, the PS/2
Micro Channel system unit must be configured using the Refer-
ence Diskette. The configuration program on the Reference
Diskette has two modes of operation: Automatic configuration
and manual configuration.
In the automatic mode, the configuration program uses the LAN
adapter board options provided on the driver diskette to automati-
cally select parameters that do not conflict with those used by
any other board installed in the system. The automatic mode is
the fastest way to configure the system. However, in some situa-
tions amanual configuration is required, such as when aboot
ROM or multiple LAN adapter boards are installed.
In the manual mode, the configuration program displays the LAN
adapter board options provided on the driver diskette and allows
you to select parameter values one at a time. If you choose a
value that conflicts with that used by another board, or avalue
previously chosen, the conflict will be noted and you must select
another parameter from alist provided by the configuration pro-
gram.
The manual mode must be used if aROM is installed on the LAN
adapter board or if multiple LAN adapters are installed. The
ROM can only be enabled using the manual mode because
"ROM disabled" is the default value used in the automatic mode.
Most network software, including NetWare, requires that each
LAN adapter board have aunique interrupt request (IRQ) chan-
nel if more than one adapter board is installed in acomputer.
The automatic mode of the Reference Diskette configuration pro-
gram, however, allows adapter boards to share IRQ channels.
No configuration conflict will be indicated when an IRQ channel is
assigned to more than one adapter board. Therefore, you must
perform amanual configuration and select unique IRQ channels
when more than one LAN adapter board is installed.
8Adapter Setup Adapter Setup 9

The configuration program allows you to change the following pa-
rameters:
•1/0 base address
•Interrupt request (IRQ) channel
•Shared RAM base address
•BIOS ROM enable, base address and size (16, 32, or 64
Kbytes)
Hardware Configuration
You need the following items to setup the system for LAN
adapter board operation:
•The master Reference Diskette provided with the system
(or abackup copy).
•The driver diskette provided with the LAN adapter board.
•Ablank high-density diskette and label.
If you already have abackup copy of the Reference Diskette,
skip to Step 2.
1. Back up the master Reference Diskette by performing the follow-
ing:
•With system power OFF, insert the master Reference
Diskette into drive A.
•Turn the system power ON. The Reference Diskette
program will boot.
•When the Reference Diskette title screen appears, press
<ENTER>. The Main Menu will be displayed.
•Select Backup the Reference Diskette from the menu.
Follow the instructions on the screen. You will need ablank
high-density (HD) diskette. When the backup operation is
finished, a"copy complete" message will appear. Press·
<ENTER> and the Main Menu will be displayed.
•Store the master Reference Diskette in asafe place. Label
the copy Reference Diskette-Copy and insert it in drive A.
2. Copy the @6FC2.ADF file from the driver diskette provided with
the LAN adapter board onto the Reference Diskette-Copy by
performing the following:
NOTE
If you skipped to this step, boot the Reference Diskette-
Copy by inserting it into drive Aand turning the system
power ON. When the title screen appears, press
<ENTER> to display the Main Menu.
•Select Copy an Option Diskette from the menu and follow
the instructions on the screen. When prompted, use the
diskette, provided with the LAN adapter board, for the
"option diskette" referred to in the instructions.
•Press <ENTER> when the operation is complete. The Main
Menu will be displayed.
•Do not restart the computer. Remove the Reference
Diskette-Copy from drive A.
•Press <ESC> to exit the configuration program.
•Turn the system power OFF.
3. If you did not prepare the LAN adapter board for installation, refer
to the section in this guide titled "Adapter Board Preparation" and
do so now. Refer to your computer system documentation in the
section that describes how to install options for instructions on in-
serting the LAN adapter into the system. The LAN adapter board
may be installed in any unoccupied expansion slot.
4. Configure the system for LAN adapter board operation by per-
forming the following:
•Insert the Reference Diskette-Copy (that has the
@6FC2.ADF file from tt.ie diskette) into drive A.
10 Adapter Setup Adapter Setup 11

•Turn the system power ON. The number "165" will be
displayed momentarily, then the title screen will appear.
•Press <ENTER> and an error message will be displayed.
The message indicates that you have changed the system
-configuration by installing the LAN adapter board. The
message prompts you to type Yif you want to perform an
automatic configuration.
•If you type N, an automatic configuration does not occur
and the program will allow you to perform amanual
configuration. Instructions for automatic and manual
configurations are in the following sections.
NOTE
Select manual configuration if aboot ROM is installed or
if multiple LAN adapter boards are installed.
Automatic Configuration
•Type Yto perform the automatic configuration. When
automatic configuration is complete, amessage is
displayed.
•Remove the Reference Diskette-Copy from drive Aand
store it in asafe place. If your operating system is not
installed on a hard disk drive, insert abootable system
diskette in drive A.
•Follow the screen instructions for restarting the computer or
turn the computer power OFF and back ON again. Go to
the section titled "Completing the Installation" in this User
Installation Guide.
Manual Configuration
•Type Nif aROM or multiple LAN adapter boards are
installed, or if you want to perform amanual configuration.
The Main Menu will appear.
•Select Set Configuration from the menu. The Set
Configuration menu will be displayed.
•Select Change Configuration from the menu. The screen
will display the configuration parameters that can be
changed.
•Using the "arrow" keys, move down the display to the slot
indicating the appropriate LAN adapter board (8003W/A).
Stop at the first parameter listed for that slot.
•If an asterisk appears next to the parameter and "conflict" is
displayed at the top of the screen, you must select an
optional value for that parameter. Use the <F5> and <F6>
keys to select aparameter value that does not cause the
conflict message to appear. Move down to each parameter,
selecting an optional parameter value whenever aconflict is
indicated.
NOTE
The Change Configuration program does not indicate a
conflict when two or more boards are set to the same
IRQ channel. Nevertheless, you must select unique and
dedicated IRQ channels for each LAN adapter board.
Refer to Appendix Afor more information on installing a
ROM.
•The default value for the "BIOS ROM Space" parameter is
"BIOS ROM Disabled". If aROM device is installed on the
LAN adapter board, press <F6> to enable the ROM and
select abase address appropriate for the size of the ROM
device you installed. The memory space occupied by the
ROM must not cause aconflict with the shared RAM space,
another option board with aBIOS ROM, or software.
5. Save the manual configuration parameters by performing the fol-
lowing:
•Press <F10> to save the parameters. When the "Save
Configuration Complete" message appears, press
<ENTER> to continue.
•Press <ESC> to exit the Change Configuration menu. The
Set Configuration menu will be displayed.
12 Adapter Setup Adapter Setup 13

•Press <ESC> to exit the Set Configuration menu.
•Remove the Reference Diskette-Copy from drive Aand
store it in asafe place. If your operating system is not
installed on a hard disk drive, insert abootable system
.diskette in drive A.
•Follow the screen instructions for restarting the computer or
turn the computer power OFF and back ON again.
Completing the Installation
You are ready to interconnect the LAN adapter board to the net-
work and install your network software package.
Network Interconnection
1OBase Ttwisted-pair and other Ethernet cable-type networks
have different characteristics which are related to the cable used
for each network type. The following sections explain the various
types of interconnections.
10BaseT Twisted-Pair Cabling
Anetwork using unshielded twisted-pair wire for connecting com-
puters has the following characteristics:
•Maximum length of all connecting cables between a
computer and concentrator is 100 meters (330 feet).
•Up to 1024 computers (nodes) can be supported on the
network.
•Can use economical 10BaseT, IBM Type 3, or AT&T POS
cable.
•Stations connect to the network through aconcentrator.
•Automatic verification of Link Integrity.
•Standard eight-pin modular jack, the same as is used with
StarLAN and ISDN.
1OBaseT Twisted-Pair Port
The twisted-pair network port on this adapter board is a modular,
RJ-45 eight-pin socket (Figure 3'). Each end of the twisted-pair
Figure 3. Board View of Female Modular Socket Pin Locations
14 Adapter Setup Network Interconnection 15

network interface cable has amating, RJ-45-type, eight-pin mod-
ular plug. Pin assignments are;
Pin Assignment
1Output (Transmit) Data(+)
2Output (Transmit) Data(-)
3Input (Receive) Data(+)
4Reserved
5Reserved
6Input (Receive) Data(-)
7Reserved
8Reserved
1OBaseT Twisted-Pair Interconnection
This section guides you through the installation of acomputer in
a10BaseT twisted-pair network. You will need the following
items for interconnecting the network computers:
•Atwisted-pair interface cable for the computer:
•Alocal concentrator for interconnecting computers or a wall
jack wired for 1OBase Ttwisted-pair cable that leads to a
concentrator in awiring closet.
Insert the modular plug at one end of the interface cable into the
RJ-45 twisted-pair wire network port at the rear of the computer.
Attach the other end of the interface cable to an input port of a
10BaseT-compatible concentrator.
Link status
When the computer has been connected to aconcentrator port
and both systems are powered on, you can verify the connection
by observing the green link integrity LED indicator provided
above the twisted-pair network port on the adapter board. Refer
to the "LED Indicators" section. When avalid connection exists,
the link status LEDs orT the adapter board and at the concentra-
tor are lit. If the LEDs are not lit, and the computer and
concentrator are powered on, check the modular plug connection
at the adapter board and at the concentrator and all wiring.
Using Existing Phone Cable
Existing telephone wiring in your building can be used for net-
work connection if the wiring meets minimum standards and wall
jacks are wired correctly. Before starting the installation, verify
that any twisted-pair wire used for network connection meets the
requirements described in Appendix B.
Existing telephone wiring may consist of aseparate a-conductor,
twisted-pair cable routed to each wall jack, or it may consist of
dozens of twisted-pair conductors in acable bundle. If acable
bundle is used, the conductors for each phone line have been
separated from the bundle and attached to the wall jack.
In either case, the arrangement of twisted-pairs at the wall
jack in atypical telephone installation is usually not accept-
able for network signal transmissions. Network signals on
pair 1must be to wall jack pins 1and 2while network sig-
nals on pair 2must be to wall jack pins 3and 6.
To determine which conductors are twisted together, record the
wire colors for each pair and note the pin to which each wire is at-
tached. For example, an eight-conductor cable may have the
following color and wire-pair configuration:
Pair Function Color Code Wall Pin
1Network Signals Orange/White Band 2
1Network Signals White/Orange Band 1
2Network Signals Green/White Band 6
2Network Signals White/Green Band 3
3Telephone Blue/White Band 4
3Telephone White/Blue Band 5
4Telephone Gray 8
4Telephone Orange 9
16 Network Interconnection Network Interconnection 17

Network interconnections are usually made in awiring closet.
You must be able to identify and separate the conductors which
are carrying network signals from the conductors that are used
for telephone operation. The color code and wire-pair arrange-
ment of telephone cable will vary from one manufacturer to
another.
Interface cable wiring
The twisted-pair interface cable provided has an eight-pin modu-
lar plug at each end that mates with the twisted-pair network port
on the LAN adapter board and with an RJ-45 modular wall jack.
If you are making your own interface cables to use as dedicated
network wiring, or as extension cables, see Figures 4and 5for
wiring information.
1
2
a- -3
5--4
81
72
a- -3
5--4
Figure 4. Eight-Conductor Interface Cable
PIN
NO.
PIN
NO.
Pair 4
+=??#.,.ii'-? ?=?Pair 4
-66-
·-5?-,;J?.,.,;'J:.. 5-·
Pair 3Pair 3
+-4 ???,,,.?P'Ãi???4-+
Pair 2¡:__ 33_: ¡Pair 2
Pair 1
·-21
;Jil'!i'-i'-..,.??? 21
-•Pair 1
+- -+
Wiring closet termination
If you are using the existing wiring in your building, concentrators
are typically mounted inside the wiring closet, where the tele-
phone conductors are terminated at awiring panel. Asegment of
twisted-pair wire is attached to the conductors from each network
computer at the termination panel and plugged into aconcen-
trator port. Refer to the notes you made to identify the
conductors used for network signals.
If you are installing new network cable, the wire pairs for each
computer may be attached directly to an RJ-45 plug and con-
nected to aconcentrator port. The wire pairs may also be ter-
minated at a wiring panel (or other termination device) and then
connected to a 1OBaseT concentrator port through atwisted-pair
wire segment that has an RJ-45 plug at one end. (See Figure 6.)
Connect each set of twisted-pair wires to aconcentrator port in
the same manner.
Most concentrator manufacturers provide ameans for connecting
concentrators in adaisy chain fashion. Refer to the concentra-
tor's installation guide for specific information.
Part of aTelephone
Wiring Panel
----,I¡=:¡, ?g,
., B? úC/ :5
i::i a/7=-fJ?
f¡
.Búe.( úC/ .,
.., B6
._ Búe.(? -ã_
lB.,
Búe.(?;!
??
?: ssiz?:??
I
----.ToConcentrator
Port
Figure 5. Interface Cable Wiring }??
Figure 6. Wirihg Panel Termination
18 Network Interconnection Network Interconnection 19

Using StarLAN 1OConcentrators
AT&T and Hewiett Packard StarLAN 1Ocompatible adapters op-
erate over StarLAN-type wiring and use 1OMbps Ethernet
speeds and protocols, but original StarLAN 1Oproducts did not
provide the Link Integrity feature required by the 10BaseT stan-
dard. Your Ethernet 10BaseT adapter can operate with existing
StarLAN 1Oproducts that do not have Link Integrity providing
that you disable the Link Integrity Test function on the adapter via
jumper W21. Refer to the "Factory Jumper Settings" section for
more information on setting the jumper.
Standard Ethernet Network Port
The AUi port allows you to attach astandard Ethernet AUi drop-
cable to the adapter board. (Refer to Appendix Bfor additional
details on an AUi port.) The adapter board will operate on an
Ethernet network by attaching an AUi drop-cable to the AUi port
and to atrunk coaxial cable through astandard Ethernet trans-
ceiver.
NOTE
Astandard Ethernet 50 Ohm terminator is required at
each end of the coaxial cable.
The adapter board's standard Ethernet port can also be used for
operation with other types of cabling such as fiber-optic. For ex-
ample, you can attach an existing AUi drop-cable to the AUi port
on the LAN adapter board and attach any standard transceiver to
the other end of the drop-cable. The transceiver provides acon-
nection to the desired cable type.
NOTE
The adapter automatically determines whether to use the
RJ-45 or AUi network connector based on which cable
you connect.
Ethernet Coaxial Cabling
Astandard Ethernet network, using these adapter boards and
thick coaxial cable, has the following characteristics:
•Maximum cable segment length (between repeaters) is 500
meters.
•Total network span (with fiber-optic repeaters) is 2500
meters.
•Minimum cable segment length is one meter.
•Up to 1024 LAN stations can be supported on the network.
•Up to 100 LAN stations can be attached per segment.
•Uses rugged, heavily insulated (thick) coaxial inter-
connection cable.
•Connects to Thin Ethernet segments through repeaters or
bridges.
Ethernet Interconnection
The following paragraphs guide you through atypical Ethernet in-
stallation. (See Figure 7.)
You will need the following items for interconnecting your comput-
ers:
•Standard (thick) Ethernet cable (up to 500-meter segments).
•An AUi drop-cable for each computer (50 meters in length,
maximum).
•An MAU transceiver/connector for each cable connection.
•Asignal repeater for each additional 500-meter cable
segment (if any).
•Two 50-Ohm coaxial cable terminators for each segment.
•Hand tools appropriate for the MAU and cable-tap kit used.
Starting with the first computer to be connected, attach an AUi
drop-cable to the AUi network port on the adapter board. Aslid-
ing latch is provided on the AUi connector port that locks the
cable to the connector. The latch is purposely tight so use a
20 Network Interconnection Network Interconnection 21

small blade screwdriver to move the latch onto the locking posts.
Make sure the posts are aligned correctly and the connector is
pushed in all the way.
Attach astandard Ethernet transceiver at a marked location on
the Ethernet cable. (Ethernet cables are marked at 2.5 meter in-
tervals.) Several types of cable tap kits are available; follow the
instructions provided with the cable tap kit you are using. Attach
the AUi drop cable to the standard Ethernet transceiver and lock
the sliding latch to hold the connector in place.
Attach all of the computers and segments to the main or "spine"
Ethernet cable in similar fashion. Use a signal repeater to attach
each additional cable segment or "rib" (500 meters each, maxi-
mum). Attach a 50 Ohm cable terminator at each end of every
cable segment.
Diagnostic Test Program
Adiagnostic program is provided on the driver diskette that you
received with the LAN adapter board. Reter to the readme.doc
tile on the disk tor an explanation of the operation of the diagnos-
tic program. Use the test program to verity correct installation in
every computer that contains one of these LAN adapter boards.
Perform the diagnostic test before installing your network soft-
ware.
50 Ohm ?---c::::J
Terminator Medium Attachment
Unh-MAU
tr?? [1¦1]
Cable m,l
Terminator
Figure 7. Example Ethernet Installation
22 Network Interconnection Network Interconnection 23

Appendix A
Installation Options
ROM Installation
Adevice socket is provided on the adapter for installing an op-
tional ROM device. For example, if aboot ROM device is
installed at U1, the computer will load the disk operating system
software through the adapteF board. ROM devices are available
from your dealer. Refer to Table A-1 for ROM size options.
NOTE
Before handling the ROM device, discharge static electric-
ity from your body by touching the metal cabinet of an
electrical product that is plugged into athree-prong
grounded outlet.
Hold the ROM device without touching its pins, oriented as
shown in Figure A-1. Gently insert the device into the socket,
making sure that the notch in the ROM device and all pins are po-
sitioned over the socket openings. Gently move the device from
side to side as you seat the pins. Verify that all pins are fully
seated in the socket.
Align ROM
and socket
notches
Figure A-1. Installing the ROM Device
24 Network Interconnection Installation Options A-1

ROM Size Selection -W9, W1 O
The adapter board with boot ROM socket is preset at the factory
to use a 16 Kbyte ROM device. The size of the ROM is defined
using jumpers at W9 and W1 O.
To verify the size (in Kbytes) of the ROM device you installed,
check the documentation that accompanies the device. The
ROM size used can be 16, 32, or 64 Kbytes. If you need to se-
lect aROM size other than the 16 Kbyte factory setting, configure
the jumpers at W9 and W1 Ofor the desired ROM size as shown
in Table A-1 .
Appendix B
Network Cable and Components
Use the information in this section to ensure that the cable and
connecting hardware meet the requirements of the IEEE stan-
dard. The components specified in this section, as well as precut
and preassembled cables, are available from your dealer. The
components and manufacturers listed are for reference purposes
only; equivalent components may be used.
ROM Size ROM Type W10, W9
ROM SIZE
16K [=õl=õl]lGK/
16 Kbytes 27128 gg 32K FACTORY
32K/ [J64K
SETTING
64K Q Q
W10 W9
ROM SIZE
16K [Q=õl]16K/
32 Kbytes 27256 =õlg 32K
32K/ [J64K
64K ?Q
W10 W9
ROM SIZE
64 Kbytes 27512 16K [Q Q J16K/
=õl =õl 32K
32K/ [J64K
64K ?:QIW10 9
Table A-1. ROM Size Options -W9, W1 O
Ethernet Network Components
LAN adapter -A LAN adapter is the interface between the com-
puter and the network cable. The Ethernet 10BaseT adapter has
two types of network ports. The RJ-45 port is used in conjunc-
tion with an unshielded twisted-pair 10BaseT Ethernet network
connection. The AUi port is used for connecting an MAU to an
Ethernet network using thick cable or any Ethernet medium.
Media attachment unit (MAU) transceiver -An MAU is an exter-
nal transceiver used to connect AUi drop-cables to thick Ethernet
coaxial cable. MAUs are also available for connection to thin
Ethernet, twisted-pair, and fiber-optic cable.
Repeater -Arepeater is used to connect cable segments to-
gether. Arepeater retimes and transmits data signals as they
pass from one segment to another. Single port and multi-port re-
peaters are available for coaxial, fiber optic, or twisted-pair cable.
Concentrator -Amulti-port repeater for twisted-pair networks as
described above.
A-2 Installation Options Network Cable and Components B-1

1OBaseT Twisted-Pair Cable
•Unshielded, twisted-wire pairs (2 pairs)
•22, 24, or 26 gauge
•Characteristic impedance at 1OMHz: 85 to 11 Oohms
•Maximum attenuation at 1OMHz: 11.5 dB/100 meters
•Maximum attentuation at 5 MHz: 7.2 dB/100 meters
Recommended Cable (or equivalent):
AT&T P-imiide wire {PIW and PPS}
4-pair/non-plenum DIW 4/24 W1000
4-pair/plenum e-plenum 4R1000
25-pair/non-plenum DIW 25/24 R1000
25-pair/plenum e-plenum 25 R1000
IBMType3
6-pair twisted Belden -9566
2-pair twisted Belden -9562
4-pair twisted Data Set Cable Company -2404
NOTE
Telephone-type cable commonly known as "silver satin" is
NOT ACCEPTABLE. Silver satin cable is flat in shape
and typically has a silver vinyl jacket. Use of silver satin
cable can cause afalse data collision on the network.
•RJ-45 modular plugs: Molex 90075-0037, or equivalent
•Crimper tool: Molex 11-01-0026, or equivalent
•RJ-45 modular wall socket: Molex 95015-0003, or
equivalent
8-2 Network Cable and Components
Thick Ethernet Cable and Components
Thick Ethernet cable -Ethernet trunk coaxial cable: Solid
tinned-copper conductors, 2.5 meter tap-in markings, 50 Ohm
nominal impedance, with N-type coaxial connectors. The Belden
part numbers for cable only are 9880 and 89880 (plenum rated).
AUi drop-cable -The interface cable between the LAN adapter
and an MAU attached to the trunk coaxial cable or other Ethernet
medium. The drop-cable has a 15-pin AUi connector at each
end and may be up to 50 meters in length. The Belden part num-
bers for drop cable only are 9901 and 89901 (plenum rated).
?
No Connection -8 ºo 15 -No Connection
No Connection -7 ºo 14 -Power Shield
DC Power Common -6 ºo 13 -DC Power+
Data In A-5 ºo 12 -Data In B
Data In Shield -4 ºo 11 -Data Out Shield
Data Out A-3 ºo 10 -Data Out B
Control In A -2 ºo 9-Control In B
Control In Shield -1 o
__..--<. Protective Ground
(Shell)
Figure 8-1. Male AUi Connector Pin Functions
DB-15 AUi connector -Used at each end of the AUi drop-
cable. Anixter part numbers are 081424 (female, solder type),
080867 (slide lock), 081425 (male, solder type), 080868 (lock-
ing post).
Figure B-1 shows the pin locations for the male connector. Note
that the pin locations for the female connector are the mirror
image of this.
Network Cable and Components 8-3

If the + 12 volt power source at pin 13 of the AUi connector has
been shorted to ground, athermistor type fuse will open the cir-
cuit and remove.the voltage from pin 13. It requires
approximately one hour from the time the short circuit is removed
for the thermistor to restore the + 12 volts to pin 13.
Cable terminator -Aterminating resistor with 50 Ohm nominal
impedance must be installed at each end of every trunk coaxial
cable segment. Athick Ethernet terminator has an N-type coax-
ial connector. Anixter part number is 080870.
8-4 Network Cable and Components
Appendix C
Troubleshooting
General
If the LAN adapter is not functioning, follow the steps below to
verify correct installation.
1. Verify that the network cable is securely attached to either
the RJ-45 or AUi network port.
2. Check the cable connection to the network. In a10BaseT
Ethernet network, check the concentrator that is connected to
the computer and verify that it is ON and is 10BaseT compati-
ble. The link integrity LEDs should be lit at both ends. In a
thick Ethernet network, check the drop-cable connection at
the MAU transceiver.
3. In coaxial cable networks, verify that 50 Ohm cable termina-
tors are installed as required. Terminators must be 50 Ohm
impedance (within 2%) or errors may occur. Terminators are
installed at the open end of every cable segment.
4. Make sure that the interconnecting cables meet IEEE stan-
dard requirements. Refer to Appendix Bfor recommended
cable.
5. If the adapter is attached to anetwork using the AUi connec-
tor, ashort to ground on the + 12 volt pin (pin 13) in the cable
will cause athermistor to shut off power to the connector. It re-
quires approximately one hour from the time the short circuit
is removed for the thermistor to restore the + 12 volts to pin 13
of the AUi connector.
6. In cold climates, allow five minutes of warm-up time for the
computer temperature to stabilize.
7. Make sure that you correctly configured your system for the
LAN adapter board using the program on the Reference Disk-
ette.
8. Make sure that you copied any required software drivers
from the driver diskette as instructed in the documentation in-
cluded with your network software. Verify that you modified
Troubleshooting C-1

the software driver to reflect the actual configuration used by
the adapter.
9. If more than one LAN adapter is installed in your computer,
make sure you selected adifferent IRQ channel for each one.
1O. Verify that the network software is loaded correctly.
11 .If aROM device is installed on the adapter, verify that the
correct ROM size is selected at W9 and W1 O. Verify that the
ROM device is correct for the type of computer system and
network software you are using. Make sure that every pin on
the ROM device is seated firmly in the socket.
12. Make sure that the adapter board is completely seated in the
computer's expansion slot.
13. Verify that no cables inside the computer were pulled loose
when you installed the adapter.
Technical Assistance
You can get assistance for installing your LAN hardware and soft-
ware by calling your dealer. Before calling for technical help, be
prepared to supply the following information:
1. Computer system manufacturer and model, BIOS manu-
facturer, BIOS date, BIOS version, CPU type, system clock
speed, bus speed, memory size, monitor type (color, mono-
chrome, high resolution, etc.) and printer type (serial or
parallel).
2. 10BaseT concentrator manufacturer and model.
3. DOS version, network software manufacturer and version,
software driver version, software driver file size and date.
4. Applications software name, manufacturer, version, and
date.
5. Contents of the AUTOEXEC.BAT and CONFIG.SYS files in
the root directory of the computer(s) having problems.
6. Error codes or messages displayed by diagnostic pro-
grams, network operating system, and applications software.
7. The type and length of interconnecting cable used. Please be
specific.
8. Types of LAN adapters used in the network. The con- figu-
ration parameters (1/0 address, IRQ channel, RAM size and
base address, ROM size and base address) of the LAN
adapter(s) having problems.
9. Other option boards and functions installed in the computer
and their configuration parameters (1/0 address, IRQ channel,
RAM size and base address, ROM size and base address).
Possible option boards include: graphics adapters, mouse
controllers, floppy controllers, extended memory boards, tape
controllers, modems, other LAN adapters, and printer control-
lers.
C-2 Troubleshooting Troubleshooting C-3