IBM 1PA Operating manual

7299 Express Family Multiplexers
and Hubs for AS/400 IBM
Planning, Installation,
and Maintenance Guide
S05J-3355-01

7299 Express Family Multiplexers
and Hubs for AS/400 IBM
Planning, Installation,
and Maintenance Guide
S05J-3355-01

Note!
Before using this information and the product it supports, be sure to read the safety information in the booklet provided with
this product and the general information under Appendix B, “Notices.”
For information about technical support, see Appendix A, “Technical Support.”
Second Edition (October 1998)
This is a revision of, and obsoletes, S05J-3355-00.
This edition applies to the IBM 7299 Express Products for AS/400 and to all subsequent releases and modifications until otherwise
indicated in new editions. Make sure you are using the correct edition for this product.
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Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
About This Book .................................... vii
How This Book Is Organized ............................. vii
Related Books . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Quick Installation Guide ................................ ix
To install the 7299 Hub: ................................ ix
To install the 7299 Multiplexer: ............................. ix
Part 1. Planning, Installation, and Maintenance
Chapter 1. Introducing the IBM 7299 Multiplexer, Express Hub, and Entry
Hub for AS/400 .................................... 1-1
The 5250 Express Data Stream ........................... 1-3
Product Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
7299 Passive Hubs ................................. 1-6
7299 Active Hubs .................................. 1-7
7299 Multiplexers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Key Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Chapter 2. Planning Your Installation ...................... 2-1
Laying Out Your Installation .............................. 2-1
Cable Run Lengths ................................. 2-1
Planning for a Ring or Point-to-Point Configuration ................ 2-2
Filling Out the 7299 Multiplexer Worksheet ................... 2-2
Describing the Physical Layout of the Fiber Optics ................ 2-6
Physical Ring Layout ................................ 2-6
Physical Star Layout ................................ 2-7
Maximum Cable Lengths ............................... 2-8
Maximum Number of Devices ............................ 2-9
Determining Whether to Use Existing Cabling ................... 2-9
Walk-Through Site Inspection Checklist ....................... 2-9
Connecting the Hub to the Host .......................... 2-14
Using a Remote Control Unit .......................... 2-14
Using 6299 Multiplexers ............................. 2-15
Connecting Devices to the Hub ........................... 2-15
Connecting the Multiplexer to the Host ...................... 2-15
Using the WSC to 7299 Multiplexer Direct Connect Cable ......... 2-16
Using Baluns Attached to a Twinax Breakout Box .............. 2-16
Using a Remote Control Unit .......................... 2-16
Connecting Devices to the Multiplexer ....................... 2-17
Baluns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Contents iii

Chapter 3. Installing the 7299 ........................... 3-1
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Unpacking the 7299 .................................. 3-1
Installing Baluns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Installing the 7299 Hub ................................ 3-2
Changing the Hub Polarity and Pinout Jumpers ................ 3-3
Installing the 7299 Multiplexer ............................ 3-5
Changing the Multiplexer Jumpers for Connector and Pinouts ........ 3-7
Installing the 7299-2EN Upgrade Kit ......................... 3-8
Chapter 4. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Symptoms and Solutions ............................... 4-1
A Device Is Down or Unstable ........................... 4-1
A Device Is Intermittent ............................... 4-2
Two Devices Interfere with Each Other ..................... 4-3
Devices Are Not Running in 2 Mbps Mode ................... 4-3
All Devices Are Down ................................ 4-4
Multiplexer Fiber Optic Link Cannot Get “Receive” LED On .......... 4-5
Devices Connected Via Multiplexer Get Parity Errors or Terminal
Connections Are Unstable ............................ 4-5
Verification Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Debugging the 7299 .................................. 4-7
Models 2EN, 2EX, and 2FX ............................ 4-7
Models 1PA and 2PA ................................ 4-8
Model 8MX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Debugging the 7299 Cabling ............................. 4-9
Potential Problem Areas ............................... 4-12
Power Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
AC or DC Voltage on Twisted-Pair Wires ................... 4-13
Wire Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Measured Wire Resistance Length versus Electrical Length ........ 4-13
Characteristic Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Impedance Discontinuities . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Part 2. Reference
Chapter 5. Midrange Device Connectivity .................... 5-1
System/36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
System/38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
AS/400 Version 1 .................................... 5-2
AS/400 Version 2 .................................... 5-3
AS/400 F Series .................................... 5-4
AS/400 Advanced Series ............................... 5-5
Chapter 6. Cables and Baluns ........................... 6-1
Cabling Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
RJ Connector Standards ............................... 6-3
DB25 Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Fiber Optic Conventions and Standards ..................... 6-5
Patch Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Balun Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
iv Planning, Installation, and Maintenance Guide

Chapter 7. Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7299 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Compatible 6299 Features .............................. 7-2
Baluns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Field Replaceable Units ................................ 7-4
Part 3. Appendixes
Appendix A. Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Phone Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Don't Know Your AS/400 Customer Number ? .................. A-1
WWW Internet Support ............................... A-2
BBS/FTP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Appendix B. Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Classification of LED Transmitter Device ..................... B-1
Electronic Emission Notices ............................. B-1
Statement of Limited Warranty ........................... B-3
Security, Auditability, and Control ......................... B-4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-1
Contents v

vi Planning, Installation, and Maintenance Guide

Preface
The IBM 7299 Express Products for AS/400 lets you use low-cost twisted-pair
cabling to connect devices to an AS/400, System/38, or System/36 host. When
using the 5250 Express Data Stream, the 7299 can increase the throughput to IBM
5250 Express adapters by nearly four times. For a detailed description of the 7299,
see Chapter 1, “Introducing the IBM 7299 Multiplexer, Express Hub, and Entry Hub
for AS/400.”
About This Book Important
Before installing the 7299, read the Safety Information booklet that was
provided with the product and Appendix B, “Notices” on page B-1.
This book documents the following IBM 7299 Express Products for AS/400
products:
Model 1PA
Model 2PA
Model 2EX
Model 2FX
Model 2EN
Model 8MX
Model 2EN Upgrade Kit
These products are described in Chapter 1, “Introducing the IBM 7299 Multiplexer,
Express Hub, and Entry Hub for AS/400.”
This book provides information for people who:
Plan for the implementation of 7299s
Install a 7299
Troubleshoot 7299 installations
To use the planning, installation, and troubleshooting directions in this book, a
working knowledge of the following related topics is necessary:
Host operating systems
Twinax cabling
Devices that you are connecting
Troubleshooting methodology
How This Book Is Organized
This book is divided into the following parts:
Part 1: Planning, installation, and troubleshooting directions (For abbreviated
installation instructions, see “Quick Installation Guide” on page ix.)
Part 2: Reference information, including background and ordering information
Part 3: Technical support, warranty, notices, and trademark information
Preface vii

This book provides:
An overview of the 7299
Information for planning your 7299 solution
Site qualification, wiring, and reference information
Product descriptions, specifications, and setup procedures
Troubleshooting procedures
Parts and FRU ordering information
This book also includes a glossary.
Related Books For troubleshooting and ordering information for 6299 products, such as the UTP
Distribution Block and multiplexers, see IBM 6299 Midrange Hub Planning,
Installation, and Maintenance Guide (G571-0362).
For information about how many device addresses are required for workstations
that are running the 5250 Express Program, see IBM 5250 Express Program User’s
Guide (G570-2221).
To order these publications, contact your IBM Authorized Dealer or IBM Marketing
Representative.
viii Planning, Installation, and Maintenance Guide