ISO/IEC 8802-3/PDAM 2

Information technology — Telecommunications and information exchange between systems — Local and metropolitan area networks — Specific requirements — Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications — Amendment 2: Data Terminal Equipment (DTE) power via Media Dependent Interface (MDI)

Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseaux locaux et métropolitains — Prescriptions spécifiques — Partie 3: Accès multiple par surveillance du signal et détection de collision (CSMA/CD) et spécifications pour la couche physique — Amendement 2: Puissance de l'équipement du terminal des données (DTE) via l'interface dépendante des médias (MDI)

General Information

• Status: Withdrawn
• ICS: 35.110 - Networking
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 4098 - Project deleted
• Completion Date: 02-Oct-2007

Standards Content (Sample)

DRAFT AMENDMENT ISO/IEC DIS 8802-3/Amd.2
ANSI/IEEE Std 802.3af
Attributed to ISO/IEC JTC 1 by the Central Secretariat (see page iii)

Voting begins on Voting terminates on
2003-11-14 2004-04-14
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
INTERNATIONAL ELECTROTECHNICAL COMMISSION • МЕЖДУНАРОДНАЯ ЭЛЕКТРОТЕХНИЧЕСКАЯ КОММИСИЯ • COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE


FAST-TRACK PROCEDURE
Information technology — Telecommunications and information
exchange between systems — Local and metropolitan area
networks — Specific requirements —
Part 3:
Carrier sense multiple access with collision detection
(CSMA/CD) access method and physical layer specifications
AMENDMENT 2: Data Terminal Equipment (DTE) power via Media
Dependent Interface (MDI)
Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseaux
locaux et métropolitains — Prescriptions spécifiques —
Partie 3: Accès multiple par surveillance du signal et détection de collision (CSMA/CD) et spécifications pour
la couche physique
AMENDEMENT 2: Puissance de l'équipement du terminal des données (DTE) via l'interface dépendante des
médias (MDI)
ICS 35.110
In accordance with the provisions of Council Resolution 21/1986 this DIS is circulated in the
English language only.
Conformément aux dispositions de la Résolution du Conseil 21/1986, ce DIS est distribué en
version anglaise seulement.


THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME
STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.

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ISO/IEC DIS 8802-3/Amd.2
ANSI/IEEE Std 802.3af
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E-mail [e-mail]

---------------------- Page: 2 ----------------------
ISO/IEC DIS 8802-3/Amd.2
ANSI/IEEE Std 802.3af
NOTE FROM ITTF
This draft International Standard is submitted for JTC 1 national body vote under the Fast-Track Procedure.
In accordance with Resolution 30 of the JTC 1 Berlin Plenary 1993, the proposer of this document recommends
assignment of ISO/IEC 8802-3 to JTC 1/SC 6.
“FAST-TRACK” PROCEDURE
1  Any P-member and any Category A liaison organization of ISO/IEC JTC 1 may propose that an existing
standard from any source be submitted directly for vote as a DIS. The criteria for proposing an existing
standard for the fast-track procedure are a matter for each proposer to decide.
2  The proposal shall be received by the ITTF which will take the following actions.
2.1  To settle the copyright and/or trade mark situation with the proposer, so that the proposed text can be
freely copied and distributed within JTC 1 without restriction.
2.2  To assess in consultation with the JTC 1 secretariat which SC is competent for the subject covered by
the proposed standard and to ascertain that there is no evident contradiction with other International
Standards.
2.3  To distribute the text of the proposed standard as a DIS. In case of particularly bulky documents the ITTF
may demand the necessary number of copies from the proposer.
3  The period for combined DIS voting shall be six months. In order to be accepted the DIS must be
supported by 75 % of the votes cast (abstention is not counted as a vote) and by two-thirds of the P-members
voting of JTC 1.
4  At the end of the voting period, the comments received, whether editorial only or technical, will be dealt
with by a working group appointed by the secretariat of the relevant SC.
5  If, after the deliberations of this WG, the requirements of 3 above are met, the amended text shall be sent
to the ITTF by the secretariat of the relevant SC for publication as an International Standard.
If it is impossible to agree to a text meeting the above requirements, the proposal has failed and the procedure
is terminated.
In either case the WG shall prepare a full report which will be circulated by the ITTF.
6  If the proposed standard is accepted and published, its maintenance will be handled by JTC 1.

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™
IEEE Std 802.3af -2003
™
(Amendment to IEEE Std 802.3 -2002,
™
including IEEE Std 802.3ae -2002)
TM
802.3af
IEEE Standard for Information technology—
Telecommunications and information exchange between systems—
Local and metropolitan area networks—
Specific requirements
Part 3: Carrier Sense Multiple Access with
Collision Detection (CSMA/CD) Access Method
and Physical Layer Specifications
Amendment: Data Terminal Equipment (DTE)
Power via Media Dependent Interface (MDI)
IEEE Computer Society
Sponsored by the
LAN/MAN Standards Committee
Published by
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Print: SH95132
PDF: SS95132
18 June 2003
IEEE Standards
IEEE Standards

---------------------- Page: 4 ----------------------
™
IEEE Std 802.3af -2003
™
(Amendment to IEEE Std 802.3 -2002,
™
including IEEE Std 802.3ae -2002)
IEEE Standard for Information technology—
Telecommunications and information exchange between systems—
Local and metropolitan area networks—
Specific requirements
Part 3: Carrier Sense Multiple Access with
Collision Detection (CSMA/CD) Access Method
and Physical Layer Specifications
Amendment: Data Terminal Equipment (DTE)
Power via Media Dependent Interface (MDI)
Sponsor
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 12 June 2003
IEEE-SA Standards Board
Abstract: Support for optionally powering a 10BASE-T, 100BASE-TX or 1000BASE-T DTE device
via the Power Interface (PI) using physical layers defined in Clauses 14, 25, and 40. The Power
Sourcing Equipment (PSE) is located at an endpoint or midspan, separate from and between the
MDIs, and provides power to the Powered Device (PD) over the Link Section. The PSE detection
protocol distinguishes a compatible PD from non-compatible devices and precludes the application
of power and possible damage to non-compatible devices. The PSE monitors the Maintain Power
Signature (MPS) and removes power when it is no longer requested or required. Optional manage-
ment function requirements are specified.
Keywords: 802.3af, Link Section, midspan, MPS, PD, PI, POE, power, Power over Ethernet, PSE
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2003 by the Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 18 June 2003. Printed in the United States of America.
IEEE and 802 are registered trademarks in the U.S. Patent & TrademarkOffice, owned by the Institute of Electrical and
Electronics Engineers, Incorporated.
Print: ISBN 0-7381-3696-4 SH95132
PDF: ISBN 0-7381-3697-2 SS95132
No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior
written permission of the publisher.

---------------------- Page: 5 ----------------------
IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating Committees of the
IEEE Standards Association (IEEE-SA) Standards Board. The IEEE develops its standards through a consensus develop-
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---------------------- Page: 6 ----------------------
Introduction to IEEE Std 802.3af-2003
[This introuduction is not part of IEEE Std 802.3af-2003, IEEE Standard for Information technology—
Telecommunications and information exchange between systems—Local and metropolitan area net-
works— Specific requirements CSMA/CD Access Method and Physical Layer Specifications Amend-
ment: Data Terminal Equipment (DTE) Power via Media Dependent Interface (MDI)]
This amendment is part of a family of standards for local and metropolitan area networks. The relationship
between the standard and other members of the family is shown below. (The numbers in the figure refer to
1
IEEE standard numbers. )

802.2 LOGICAL LINK
.


DATA

802.1 BRIDGING
LINK
LAYER


 
 
802.11
802.3 802.5
802.15 802.16
MEDIUM MEDIUM
MEDIUM
MEDIUM MEDIUM
ACCESS ACCESS
ACCESS
ACCESS ACCESS

802.3 802.11 PHYSICAL
802.5
802.15 802.16
PHYSICAL PHYSICAL LAYER
PHYSICAL
PHYSICAL PHYSICAL

* Formerly IEEE Std 802.1A .
This family of standards deals with the Physical and Data Link layers as defined by the International
Organization for Standardization (ISO) Open Systems Interconnection (OSI) Basic Reference Model
(ISO/IEC 7498-1: 1994). The access standards define five types of medium access technologies and
associated physical media, each appropriate for particular applications or system objectives. Some access
standards have been withdrawn and other types are under investigation.
The standards defining the technologies noted above are as follows:
2
• IEEE Std 802 Overview and Architecture. This standard provides an overview to the
family of IEEE 802 Standards.

™
• IEEE Std 802.1B LAN/MAN Management. Defines an OSI management-compatible

™
and 802.1k architecture, and services and protocol elements for use in a LAN/MAN
[ISO/IEC 15802-2] environment for performing remote management.

™
• IEEE Std 802.1D Media Access Control (MAC) Bridges. Specifies an architecture and protocol
for the interconnection of IEEE 802 LANs below the MAC service boundary.

™
• IEEE Std 802.1E System Load Protocol. Specifies a set of services and protocol for those aspects
[ISO/IEC 15802-4] of management concerned with the loading of systems on IEEE 802 LANs.
1
The IEEE standards referred to in the above figure and list are trademarks owned by the Institute of Electrical and Electronics
Engineers, Incorporated.
2
The IEEE 802 Overview and Architecture Specification, originally known as IEEE Std 802.1A, has been renumbered as IEEE Std 802.
This has been done to accomodate recognition of the base standard in a family of standards. References to IEEE Std 802.1A should be
considered as references to IEEE Std 802.
Copyright © 2003 IEEE. All rights reserved. iii


802.10 SECURITY

802 OVERVIEW & ARCHITECTURE*

802.1 MANAGEMENT

---------------------- Page: 7 ----------------------
™
• IEEE Std 802.1F Common Definitions and Procedures for IEEE 802 Management Information.
™
• IEEE Std 802.1G Remote Media Access Control (MAC) Bridging. Specifies extensions for the
[ISO/IEC 15802-5] interconnection, using non-LAN communication technologies, of geographically
separated IEEE 802 LANs below the level of the logical link control protocol.
™
• IEEE Std 802.1H Media Access Control (MAC) Bridging of Ethernet V2.0 in Local Area
[ISO/IEC TR 11802-5] Networks.
• IEEE Std 802.2 Logical Link Control.
[ISO/IEC 8802-2]
• IEEE Std 802.3 CSMA/CD Access Method and Physical Layer Specifications.
• IEEE Std 802.5 Token Ring Access Method and Physical Layer Specifications.
[ISO/IEC 8802-5]

• IEEE Std 802.10 Interoperable LAN/MAN Security.
• IEEE Std 802.11 Wireless LAN Medium Access Control (MAC) and Physical Layer
[ISO/IEC DIS 8802-11] Specifications.
• IEEE Std 802.15 Wireless Medium Access Control (MAC) and Physical Layer (PHY)
Specifications for: Wireless Personal Area Networks.
• IEEE Std 802.16 Standard Air Interface for Fixed Broadband Wireless Access Systems.
In addition to the family of standards, the following is a recommended practice for a common Physical
Layer technology:
™
• IEEE Std 802.7 IEEE Recommended Practice for Broadband Local Area Networks.
Conformance test methodology
™
An additional standard, IEEE Std 1802.3 provides conformance test information for 10BASE-T.
IEEE Std 802.3af-2003
This standard contains state-of-the-art material. The area covered by this standard is undergoing evolution.
Revisions are anticipated to this standard within the next few years to clarify existing material, to correct
possible errors, and to incorporate new related material.
iv Copyright © 2003 IEEE. All rights reserved.

---------------------- Page: 8 ----------------------
Participants
The following is a list of chairs and editors at the time the IEEE 802.3 Working Group balloted this standard:
Geoffrey O. Thompson, Chair—Phase 1
Robert M. Grow, Chair—Phase 2
David J. Law, Vice Chair
Robert M. Grow, Secretary—Phase 1              Steven B. Carlson, Secretary—Phase 2
Steven B. Carlson, Chair, 802.3af Task Force
Michael S. McCormack, Editor—Phase 1, 802.3af Task Force
John J. Jetzt, Editor—Phase 2, 802.3af Task Force
Chad M. Jones, Comment Editor, 802.3af Task Force
The following is a list of voters at the time the IEEE 802.3 Working Group balloted this standard:

Martin Adams Doug Coleman Denton Gentry David E. Kohl
Oscar Agazzi Régis Colla John George Paul Kolesar
Don Alderrou Herb Congdon Ali Ghiasi Glen Kramer
Thomas Alexander Edward Cornejo Pat Gilliland Gerard Kuyt
Khaled Amer Richard Cross Moty Goldis Hans Lackner
Keith Amundsen Brian Cruikshank Matthew Goldman Lawrence J. Lamers
Tony Anderson Chris Cullin Timothy D. Goodman William Lane
Ralph Andersson David Cunningham Rich Graham Daun Langston
Jack Andresen John D'Ambrosia Eric B. Grann Ryan Latchman
Mehran Ataee Robert Dahlgren C. Thomas Gray Quang Le
Phil Auld Kevin Daines Jonathan E. Greenlaw Eugene Lee
Gerard E. Bachand John Dallesasse Ajay Gummalla Wesley Lee
Andy Baldman Rupert S. Dance Michael Hackert Amir Lehr
Hugh Barrass Yair Darshan Stephen Haddock Lisa Leo
Bob Barrett Peter Dartnell Sharam Hakimi Robert H. Leonowich
Howard Baumer Piers Dawe Farid Hamidy Avinoam Levy
Denis Beaudoin Michael deBie Johannes Hansen Tom Lindsay
Michaël Beck Tom Debiec Del Hanson Fengkun Liu
Mike Bennett Joel Dedrick Marwan Hassoun Fred A. Lucas
Sidney Berglund Chris Di Minico Tom Hatley Meilissa R. Lum
John L. Bestel Wael Diab Adam Healey Jeffrey Lynch
Vipul Bhatt Thomas Dineen Ronen Heldman Eric R. Lynskey
Jeff E. Bisberg Hamish Dobson Itzik Hendel Henning Lysdal
Michel Bohbot David W. Dolfi Ken Herrity Brian MacLeod
Brad Booth Dan Dove James H. Hesson Ariel Maislos
Paul Bottorff Daniel S. Draper Henry Hinrichs David W. Martin
Gary Bourque Brian Drever David Hinzel Koichiro Mashiko
Kirk Bovill Mike Dudek Ryan Hirth Thomas Mathey
Richard Brand Richard Dugan Jay Hoge Ziad Albert Matni
Andrew Brierley-Green David Dwelley David W. Hyer Hideyuki Matsuo
Rhett Brikovskis Clay Eddings Haruhiko Ichino Bob Mayer
Rick Brooks Frank J. Effenberger Osamu Ishida Kent McCammon
Benjamin Brown John Egan Steve Jackson Philip L. McCarron
Kevin Brown George Eisler Michael R. Jacobson Jo Beth Metzger
Steve F. Buck Martin Elhøj Brent Jaffa Richard Michalowski
Lisa Buckman John F. Ewen Eric Jang Jacob (Kobi) Mizrahi
James Burgess Jean-Loup Ferrant Woo-Hyuk Jang Fred Mohamadi
Scott Burton Jens Fiedler Jack L. Jewell Dirk S. Mohl
Robert Busse Norival Figueira Wenbin Jiang Cindy Montstream
Roy Bynum Robert G. Finch Clarence Joh Paul B. Moore
Donald Caldwell Farzin Firoozmand David Kabal Robert Moore
Richard Cam Alan Flatman Shinkyo Kaku Shohei Moriwaki
Justin Chang Roger Fraser Mohan Kalkunte Robert Muir
Xiaopeng Chen Howard Frazier Puru Kamat Shimon Muller
Zinan Chen Ladd Freitag Roger Karam Denis Murphy
Hon Wah Chin Krister Frojdh Dave Kaufman Thomas Murphy
Kuen Chow Yukihiro Fujimoto N. Patrick Kelly Brian Murray
George Claseman Darrell Furlong John J. Kenny Gerard Nadeau
Terry Cobb Justin Gaither Dawson Kesling Ken Naganuma
Copyright © 2003 IEEE. All rights reserved. v

---------------------- Page: 9 ----------------------
i Naidu John Quirk Robbie Shergill Peter Van Laanen
Har
Karl Nakamura Rick Rabinovich Jian Song Erik van Oosten
Nersi Nazari Jurgen Rahn Patrick H. Stanley Vinod Kumar Venkatavaraton
Kristian Nelson Naresh Raman Nick Stapleton Ramakrishna Vepa
Paul Nikolich Jennifer G. Rasimas Claus Stetter Gérard Vergnaud
Michael Nootbaar Dan Rausch Donald S. Stewart David Vogel
Bob Noseworthy Peter Rautenberg Dean M. Stoddart Martin Wagner
Satoshi Obara Maurice Reintjes Mario Stoltz Tim Warland
Stephen Oh Lawrence Rennie Hiroshi Suzuki Jeff Warren
Peter Ohlén Ramez Rizk Daniel Svensson Ted Washburn
Toshio Ooka Shawn Rogers Steve Swanson Fred Weniger
Philip Orlik Dan Romascanu Tad Szostak Tony Whitlow
George Oughton Tume Römer Rich Taborek Bill Wiedemann
Robert R. Pace Floyd Ross Bharat Tailor John Wolcott
Don Pannell Larry Rubin Akio Tajima King Won
Elwood T. Parsons Hyunsurk Ryu Mike Tate Shin-Hee Won
Dipak M. Patel Dolors Sala Pat Thaler David Wong
Alex Pavlovsky Anthony Sanders R. Jonathan Thatcher Edward Wong
John Payne Mark Sankey Walter Thirion Leo Wong
Petar Pepeljugoski Akira Sasaki Bruce Tolley Percy Wong

Gerry Pesavento Raj Savara Paul Torgerson Stefan M. Wurster
Armin Pitzer Klaus Schulz Rick Townsend Doug Yoder
Timothy R. Plunkett Peter Schwartz Edward Turner Jason Yorks
Jeff Porter Khorvash Sefidvash Bulent Tusiray Leonard Young
William Quackenbush Steve Selee Bor-long Twu Hank Zannini
Jim Quilici Koichiro Seto Sterling A. Vaden Bob Zona
Patrick W. Quinn Vadim Shain Schelto van Doorn
vi Copyright © 2003 IEEE. All rights reserved.

---------------------- Page: 10 ----------------------
The following members of the balloting committee voted on this revision of the standard. Balloters may
have voted for approval, disapproval, or abstention.
Ilian Atias Marian Hargis George Miao
Jacob Ben Ary Steven M. Hemmah Joseph Moran
Benjamin Brown Peeya Iwagoshi Robert Muir
Scott Burton Raj Jain Ken Naganuma
Jeff Cain John J. Jetzt Paul Nikolich
Steven B. Carlson Chad Jones Bob O'Hara
Yawgeng Chau Roger A. Karam Satoshi Obara
Keith Chow E. S. Kramer Donald R. Pannell
Chris Cullin William Lane Subbu Ponnuswamy
Guru Dutt Dhingra David J. Law Vikram Punj
Yair Darshan Pi-Cheng Law Maurice Reintjes
Wael Diab Amir Lehr Thomas Ruf
Christopher T. Diminico Daniel Levesque Frederick Schindler
Thomas Dineen Vincent Lipsio Charles Spurgeon
Dr. Sourav Dutta Jeff Lynch Clay Stocklin

David McLean Dwelly Jose Morales Steven Swanson
Mordechai Goldis Ahmad Mahinfallah Pat Thaler
Rich Graham Kyle Maus Geoffrey O. Thompson
Robert M. Grow Patrick McCaughey Jerry Thrasher
Stephen Haddock Michael McCormack Sterling Vaden
Khosrow Haratian Steve Methley Oren Yuen
When the IEEE-SA Standards Board approved this standard on 12 June 2003, it had the following
membership:
Don Wright, Chair
Howard M. Frazier, Vice Chair
Judith Gorman, Secretary
H. Stephen Berger Donald M. Heirman Daleep C. Mohla
Joe Bruder Laura Hitchcock William J. Moylan
Bob Davis Richard H. Hulett Paul Nikolich
Richard DeBlasio Anant Jain Gary Robinson
Julian Forster* Lowell G. Johnson Malcolm V. Thaden
Toshio Fukuda Joseph L. Koepfinger* Geoffrey O. Thompson
Arnold M. Greenspan Tom McGean Doug Topping
Raymond Hapeman Steve Mills Howard L. Wolfman
*Member Emeritus
Also included are the following nonvoting IEEE-SA Standards Board liaisons:
Alan Cookson, NIST Representative
Satish K. Aggarwal, NRC Representative
Catherine Berger
IEEE Standards Project Editor
Copyright © 2003 IEEE. All rights reserved. vii

---------------------- Page: 11 ----------------------
Contents
REVISIONS TO IEEE Std 802.3-2002
1. (Changes to) Introduction . 2
1.4 (Changes to) Definitions. 2
1.5 (Changes to) Abbreviations . 2
14. (Changes to) Twisted-pair medium attachment unit (MAU) and baseband medium,
type 10BASE-T. 3
22. (Changes to) Reconciliation Sublayer (RS) and Media Independent Interface (MII) . 4
30. (Changes to) 10 Mb/s, 100 Mb/s, 1000 Mb/s, and 10 Gb/s Management . 6
30.1 (Changes to) Overview . 6
30.9 Management for Power Sourcing Equipment (PSE) . 11
30.10 Layer management for Midspan .14
40. (Changes to) Physical Coding Sublayer (PCS), Physical Medium Attachment (PMA) sublayer
and baseband medium, type 1000BASE-T. 17
ANNEXES
(Changes to) Annex 30A (normative) GDMO specification for IEEE 802.3 managed object classes . 18
(Changes to) Annex 30B (normative) GDMO and ASN.1 definitions for management. 26
NEW MATERIAL TO IEEE Std 802.3-2002
33.Data Terminal Equipment (DTE) Power via Media Dependent Interface (MDI)27
33.1 Overview. 27
33.2 Power sourcing equipment. 29
33.3 Powered devices. 49
33.4 Additional Electrical specifications . 57
33.5 Environmental. 66
33.6 Management function requirements . 67
33.7 Protocol Implementation Conformance Statement (PICS) proforma for Clause 33,
DTE Power via MDI. 71
Annex 33A (informative) PSE Detection of PDs . 86
Annex 33B (informative) Cabling guidelines. 89
Annex 33C (informative) Recommended test configurations and procedures. 90
33C.1Recommended PSE output test procedures . 91
viii Copyright © 2003 IEEE. All rights reserved.

---------------------- Page: 12 ----------------------
33C.2Recommended PSE AC disconnect-detection test procedures. 104
33C.3Recommended PSE detection signature test procedures . 107
33C.4Recommended PD detection signature test procedures. 110
33C.5Recommended PD power supply test procedures. 113
Annex 33D (informative) PSE-PD stability . 117
33D.1 Recommended PSE design guidelines and test setup. 117
33D.2 Recommended PD design guidelines. 119
Annex 33E  (informative) Cabling resistance unbalance . 120
Copyright © 2003 IEEE. All rights reserved. ix

---------------------- Page: 13 ----------------------
List of special symbols
For the benefit of those who have received this document by electronic means, what follows is a list of
special symbols and operators. All special symbols and operators are taken from the “SYMBOL” font set
supported on most Windows, MacIntosh, and UNIX sys
...