y
`
`IEEE 100
`The Authoritative Dictionary of
`IEEE Standards Terms
`
`Seventh Edition
`
`Published by
`Standards Information Network
`IEEE Press
`Ex. 3001, 1
`(cid:40)(cid:91)(cid:17)(cid:3)(cid:22)(cid:19)(cid:19)(cid:21)(cid:15)(cid:3)(cid:20)
`(cid:36)(cid:88)(cid:87)(cid:75)(cid:82)(cid:85)(cid:76)(cid:93)(cid:72)(cid:71)(cid:3)(cid:79)(cid:76)(cid:70)(cid:72)(cid:81)(cid:86)(cid:72)(cid:71)(cid:3)(cid:88)(cid:86)(cid:72)(cid:3)(cid:79)(cid:76)(cid:80)(cid:76)(cid:87)(cid:72)(cid:71)(cid:3)(cid:87)(cid:82)(cid:29)(cid:3)(cid:56)(cid:81)(cid:76)(cid:87)(cid:72)(cid:71)(cid:3)(cid:54)(cid:87)(cid:68)(cid:87)(cid:72)(cid:86)(cid:3)(cid:51)(cid:68)(cid:87)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:55)(cid:85)(cid:68)(cid:71)(cid:72)(cid:80)(cid:68)(cid:85)(cid:78)(cid:3)(cid:50)(cid:73)(cid:73)(cid:76)(cid:70)(cid:72)(cid:17)(cid:3)(cid:39)(cid:82)(cid:90)(cid:81)(cid:79)(cid:82)(cid:68)(cid:71)(cid:72)(cid:71)(cid:3)(cid:82)(cid:81)(cid:3)(cid:45)(cid:88)(cid:79)(cid:92)(cid:3)(cid:20)(cid:25)(cid:15)(cid:21)(cid:19)(cid:20)(cid:25)(cid:3)(cid:68)(cid:87)(cid:3)(cid:19)(cid:27)(cid:29)(cid:24)(cid:25)(cid:29)(cid:21)(cid:19)(cid:3)(cid:56)(cid:55)(cid:38)(cid:3)(cid:73)(cid:85)(cid:82)(cid:80)(cid:3)(cid:44)(cid:40)(cid:40)(cid:40)(cid:3)(cid:59)(cid:83)(cid:79)(cid:82)(cid:85)(cid:72)(cid:17)(cid:3)(cid:3)(cid:53)(cid:72)(cid:86)(cid:87)(cid:85)(cid:76)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)(cid:3)(cid:68)(cid:83)(cid:83)(cid:79)(cid:92)(cid:17)
`
`

`

`y
`
`Trademarks and disclaimers
`
`IEEE believes the information in this publication is accurate as of its publication date; such information is subject
`to change without notice. IEEE is not responsible for any inadvertent errors.
`
`Other tradenames and trademarks in this document are those of their respective owners.
`
`The Institute of Electrical and Electronics Engineering, Inc.
`3 Park Avenue, New York, NY, 10016-5997, USA
`
`Copyright 䉷 2000 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published
`December 2000. Printed in the United States of America.
`
`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.
`
`To order IEEE Press publications, call 1-800-678-IEEE.
`
`Print: ISBN 0-7381-2601-2
`
`SP1122
`
`See other standards and standards-related product listings at: http://standards.ieee.org/
`
`The publisher believes that the information and guidance given in this work serve as an enhancement to users,
`all parties must rely upon their own skill and judgement when making use of it. The publisher does not assume
`any liability to anyone for any loss or damage caused by any error or omission in the work, whether such error
`or omission is the result of negligence or any other cause. Any and all such liability is disclaimed.
`
`This work is published with the understanding that the IEEE is supplying information through this publication,
`not attempting to render engineering or other professional services. If such services are required, the assistance
`of an appropriate professional should be sought. The IEEE is not responsible for the statements and opinions
`advanced in this publication.
`
`Ex. 3001, 2
`(cid:40)(cid:91)(cid:17)(cid:3)(cid:22)(cid:19)(cid:19)(cid:21)(cid:15)(cid:3)(cid:21)
`(cid:36)(cid:88)(cid:87)(cid:75)(cid:82)(cid:85)(cid:76)(cid:93)(cid:72)(cid:71)(cid:3)(cid:79)(cid:76)(cid:70)(cid:72)(cid:81)(cid:86)(cid:72)(cid:71)(cid:3)(cid:88)(cid:86)(cid:72)(cid:3)(cid:79)(cid:76)(cid:80)(cid:76)(cid:87)(cid:72)(cid:71)(cid:3)(cid:87)(cid:82)(cid:29)(cid:3)(cid:56)(cid:81)(cid:76)(cid:87)(cid:72)(cid:71)(cid:3)(cid:54)(cid:87)(cid:68)(cid:87)(cid:72)(cid:86)(cid:3)(cid:51)(cid:68)(cid:87)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:55)(cid:85)(cid:68)(cid:71)(cid:72)(cid:80)(cid:68)(cid:85)(cid:78)(cid:3)(cid:50)(cid:73)(cid:73)(cid:76)(cid:70)(cid:72)(cid:17)(cid:3)(cid:39)(cid:82)(cid:90)(cid:81)(cid:79)(cid:82)(cid:68)(cid:71)(cid:72)(cid:71)(cid:3)(cid:82)(cid:81)(cid:3)(cid:45)(cid:88)(cid:79)(cid:92)(cid:3)(cid:20)(cid:25)(cid:15)(cid:21)(cid:19)(cid:20)(cid:25)(cid:3)(cid:68)(cid:87)(cid:3)(cid:19)(cid:27)(cid:29)(cid:24)(cid:25)(cid:29)(cid:21)(cid:19)(cid:3)(cid:56)(cid:55)(cid:38)(cid:3)(cid:73)(cid:85)(cid:82)(cid:80)(cid:3)(cid:44)(cid:40)(cid:40)(cid:40)(cid:3)(cid:59)(cid:83)(cid:79)(cid:82)(cid:85)(cid:72)(cid:17)(cid:3)(cid:3)(cid:53)(cid:72)(cid:86)(cid:87)(cid:85)(cid:76)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)(cid:3)(cid:68)(cid:83)(cid:83)(cid:79)(cid:92)(cid:17)
`
`

`

`y
`
`island effect
`
`591
`
`isolated equipment ground
`
`island effect (electron tube) The restriction of the emission
`from the cathode to certain small areas of it (islands) when
`the grid voltage is lower than a certain value.
`
`implements the BUS㛮MANAGER㛮ID,
`(2) A node that
`BANDWIDTH㛮AVAILABLE, CHANNELS㛮AVAILABLE
`and BROADCAST㛮CHANNEL registers (some of which
`permit the cooperative allocation of isochronous resources).
`Subsequent to each bus reset, one isochronous resource man-
`ager is selected from all nodes capable of this function.
`(C/MM) 1394a-2000
`isochronous service octet A single octet of data passed isoch-
`ronously between the DQDB layer and the isochronous ser-
`vice user (ISU).
`(LM/C) 8802-6-1994
`isochronous service user (ISU) The entity that uses the isoch-
`ronous service provided by the DQDB layer to transfer isoch-
`ronous service octets over an established isochronous con-
`nection.
`(LM/C) 8802-6-1994
`isochronous speed governing (gas turbines) Governing with
`steady-state speed regulation of essentially zero magnitude.
`(PE/EDPG) [5], 282-1968w
`isochronous subaction (1) A complete link layer operation (ar-
`bitration and isochronous packet) that is sent only during an
`isochronous cycle.
`(C/MM) 1394-1995
`(2) Within the isochronous period, either a concatenated
`packet or a packet and the gap that preceded it.
`(C/MM) 1394a-2000
`isocon mode (camera tubes) A low-noise return-beam mode
`of operation utilizing only back-scattered electrons from the
`target to derive the signal, with the beam electrons specularly
`reflected by the electrostatic field near the target being sepa-
`rated and rejected. See also: camera tube.
`(ED) [45]
`isoelectric point A condition of net electric neutrality of a col-
`loid, with respect to its surrounding medium. See also: ion.
`(EEC/PE) [119]
`isokeraunic level (lightning) The average annual number of
`thunderstorm days. See also: direct-stroke protection.
`(T&D/PE) [10]
`isokeraunic lines Lines on a map connecting points having the
`same keraunic level.
`(SUB/PE) 998-1996
`isokeraunic map A map showing equal levels of thunderstorm
`activity. Usually shown in mean annual days of thunderstorm
`activity. Synonym: isoceraunic map. See also: keraunic level.
`(T&D/PE) 751-1990
`isolated (A) Physically separated, electrically and mechanically,
`from all sources of electrical energy. Such separation may not
`eliminate the effects of electrical induction. (B) Not readily
`accessible to persons unless special means for access are used.
`(PE/T&D/IA/NESC/PC) 516-1987, 524-1992, 1048-1990,
`458-1990, [86], 463-1977, C2.2-1960, C2-1997
`isolated bonding network (IBN) (A) A bonding network that
`has a single point of connection (single-point ground) to ei-
`ther the common bonding network (CBN) or another isolated
`bonding network. (B) Typically a system-level grounding to-
`pology used by the original equipment manufacturer (OEM)
`to desensitize its equipment to suspected or known site en-
`vironmental issues such as power fault and surge, lightning,
`and grounding potential rise. The IBN requires the use of a
`single-point connection location (also known in the telephone
`industry as a ground window) to interface the rest of the build-
`ing metallics (the CBN). Note: The IBN may also be known
`in the public telephone network as an isolated ground plane.
`(IA/PSE) 1100-1999
`isolated by elevation Elevated sufficiently so that persons may
`safely walk underneath.
`(NESC) C2-1997
`isolated capacitor bank A capacitor bank that is not in parallel
`with other capacitor banks.
`(T&D/PE) 1036-1992
`isolated conductor (ignored conductor) In a multiple-conduc-
`tor system, a conductor either accessible or inaccessible, the
`charge of which is not changed and to which no connection
`is made in the course of the determination of any one of the
`capacitances of the remaining conductors of the system.
`(Std100) 270-1966w
`isolated equipment ground An isolated equipment grounding
`conductor runs in the same conduit or raceway as the supply
`conductors. This conductor is insulated from the metallic
`Ex. 3001, 3
`(cid:40)(cid:91)(cid:17)(cid:3)(cid:22)(cid:19)(cid:19)(cid:21)(cid:15)(cid:3)(cid:22)
`(cid:36)(cid:88)(cid:87)(cid:75)(cid:82)(cid:85)(cid:76)(cid:93)(cid:72)(cid:71)(cid:3)(cid:79)(cid:76)(cid:70)(cid:72)(cid:81)(cid:86)(cid:72)(cid:71)(cid:3)(cid:88)(cid:86)(cid:72)(cid:3)(cid:79)(cid:76)(cid:80)(cid:76)(cid:87)(cid:72)(cid:71)(cid:3)(cid:87)(cid:82)(cid:29)(cid:3)(cid:56)(cid:81)(cid:76)(cid:87)(cid:72)(cid:71)(cid:3)(cid:54)(cid:87)(cid:68)(cid:87)(cid:72)(cid:86)(cid:3)(cid:51)(cid:68)(cid:87)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:55)(cid:85)(cid:68)(cid:71)(cid:72)(cid:80)(cid:68)(cid:85)(cid:78)(cid:3)(cid:50)(cid:73)(cid:73)(cid:76)(cid:70)(cid:72)(cid:17)(cid:3)(cid:39)(cid:82)(cid:90)(cid:81)(cid:79)(cid:82)(cid:68)(cid:71)(cid:72)(cid:71)(cid:3)(cid:82)(cid:81)(cid:3)(cid:45)(cid:88)(cid:79)(cid:92)(cid:3)(cid:20)(cid:25)(cid:15)(cid:21)(cid:19)(cid:20)(cid:25)(cid:3)(cid:68)(cid:87)(cid:3)(cid:19)(cid:27)(cid:29)(cid:24)(cid:25)(cid:29)(cid:21)(cid:19)(cid:3)(cid:56)(cid:55)(cid:38)(cid:3)(cid:73)(cid:85)(cid:82)(cid:80)(cid:3)(cid:44)(cid:40)(cid:40)(cid:40)(cid:3)(cid:59)(cid:83)(cid:79)(cid:82)(cid:85)(cid:72)(cid:17)(cid:3)(cid:3)(cid:53)(cid:72)(cid:86)(cid:87)(cid:85)(cid:76)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)(cid:3)(cid:68)(cid:83)(cid:83)(cid:79)(cid:92)(cid:17)
`
`(Std100) [84]
`islanding (1) (utility-interconnected static power converters)
`Operation of the power converter and part of the utility load
`while isolated from the remainder of the electric utility sys-
`tem.
`(DESG) 1035-1989w
`(2) (windfarm generating stations) Operation of non-utility
`electric generation equipment, with or without a portion of an
`electric utility system, isolated from the remainder of the util-
`ity system.
`(DESG) 1094-1991w
`(3) A condition in which a portion of the utility system that
`contains both load and distributed resources remains ener-
`gized while isolated from the remainder of the utility system.
`(SCC21) 929-2000
`ISM apparatus (industrial, scientific, and medical appa-
`ratus; electromagnetic compatibility) Apparatus intended
`for generating radio-frequency energy for industrial, scientific
`or medical purposes. See also: electromagnetic compatibility.
`(INT) [53], [70]
`ISO See: International Organization for Standardization.
`isocandela line (illuminating engineering) A line plotted on
`any appropriate set of coordinates to show directions in space,
`about a source of light, in which the intensity is the same. A
`series of such curves, usually for equal increments of inten-
`sity, is called an isocandela diagram.
`(EEC/IE) [126]
`isoceraunic map See: isokeraunic map.
`isochronous (1) The time characteristic of an event or signal
`recurring at known, periodic time intervals.
`(LM/C) 8802-6-1994
`(2) A communication stream transport that is uniform in time.
`The delivery of the physical stream of information is recur-
`ring at regular intervals.
`(C/LM/COM) 802.9a-1995w, 8802-9-1996
`(3) The essential characteristic of a time-scale or a signal such
`that the time intervals between consecutive significant in-
`stances either have the same duration or durations that are
`integral multiples of the shortest duration.
`(C/MM) 1394-1995
`(4) Uniform in time (i.e., having equal duration) and recurring
`at regular intervals.
`(C/MM) 1394a-2000
`isochronous channel A relationship between a talker and one
`or more listeners, identified by a channel number. One packet
`for each channel is sent during each isochronous cycle. Chan-
`nel numbers are assigned using the isochronous resource
`management facilities.
`(C/MM) 1394-1995
`isochronous cycle An operating mode of the bus that begins
`after a cycle start is sent, and ends when a subaction gap is
`detected. During an isochronous cycle, only isochronous su-
`bactions may occur. An isochronous cycle begins every 125
`␮s, on average.
`(C/MM) 1394-1995
`isochronous gap (1) The period of idle bus before the start of
`arbitration for an isochronous subaction.
`(C/MM) 1394-1995
`(2) For an isochronous subaction, the period of idle bus that
`precedes arbitration.
`(C/MM) 1394a-2000
`isochronous period A period that begins after a cycle start
`packet is sent and ends when a subaction gap is detected.
`During an isochronous period, only isochronous subactions
`may occur. An isochronous period begins, on average, every
`125 ␮s.
`(C/MM) 1394a-2000
`isochronous resource manager (1) The node that contains
`the facilities needed to manage isochronous resources. In
`particular, the isochronous resource manager includes the
`BUS㛮 MANAGER㛮ID, BANDWIDTH㛮AVAILABLE, and
`CHANNELS㛮AVAILABLE registers. In addition, if there is
`no bus manager on the local bus, the isochronous resource
`manager may also perform limited power management and
`select a node to be the cycle master.
`(C/MM) 1394-1995
`
`