`
`ANSVIEEE Std 100-1988
`
`ie IEEEStandardDictionary of
`ElectricalandElectronics Terms ©
`
` Ericsson Exhibit 1017
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`Page 1
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`Ericsson Exhibit 1017
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`An American National Standard
`Acknowledged as An American National Standard
`July 8, 1988
`
`IEEE
`Standard Dictionary
`of
`Electrical and
`Electronics
`‘Terms
`
`Fourth Edition
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`Ericsson Exhibit 1017
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`Ericsson Exhibit 1017
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`IEEE Standards Board Members
`
`Marco Migliaro, Vice Chairman
`Donald C. Fleckenstein, Chairman
`Andrew G. Salem, Secretary
`
`Arthur A. Blaisdell
`Fletcher J. Buckley
`James M. Daly
`Stephen R. Dillon
`Eugene P. Fogarty
`Jay Forster* ~-
`Thomas L. Hannan
`Kenneth D. Hendrix
`Theodore W.Hissey, Jr.
`
`Members Emeriti
`
`John W. Horch
`Jack M. Kinn
`Frank D. Kirschner
`Frank C. Kitzantides
`Joseph L. Koepfinger*
`Irving Kolodny
`Edward Lohse
`John E. May,Jr.
`Lawrence V. McCall
`
`L. Bruce McClung
`Donald T. Michael*
`Richard E. Mosher
`L. John Rankine
`Gary S. Robinson
`Frank L. Rose
`Helen M. Wood
`Karl H. Zaininger
`Donald W.Zipse
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`detectivity
`
`256
`
`device
`
`detectivity. The reciprocal of noise equivalent power
`(NEP). See: noise equivalent power (NEP).
`433
`detector (1)(monitoring radioactivity in effluents).
`Any device for converting radiation flux to a signal
`suitable for observation and measurement.
`559
`(2) (electromagnetic energy). A device for the indica-
`tion of the presence of electromagnetic fields. Note:
`In combination with an instrument, a detector may be
`employed for the determination of the complex field
`amplitudes. See: auxiliary device to an instrument.
`185
`(3) (overhead-power-line corona and radio noise).
`For purposes of this standard a detector is defined as
`a device which combinesthe function of detector (ex-
`traction of signal or noise from a modulated input) and
`weighting (extraction of a particular characteristic of
`the signal or noise).
`411
`(4) (radiation protection). A device or component
`which produces an electronically measurable quantity
`in response to ionizing radiation,
`399
`detector, average. See: average detector.
`detector figure of merit (nonlinear, active, and nonre-
`ciprocal waveguide components). A measure of the
`performance of a diode detector. It can be expressed
`quantitatively as the ratio of the open-circuit voltage
`sensitivity to the square root of the video resistance.
`530
`detector geometry (detector jargon)(X-ray energy
`spectrometers)(charged-particle.detectors) (semi-
`conductor radiation detectors). The physical configu-
`ration of a solid-state detector.
`471,119,23,118
`detector, totally depleted. See: totally depleted detec-
`tor.
`detector, transmission. See: transmission detector.
`determinant (circuits and systems). A square array of
`numbers or elements bordered on either side by a
`straight line. The value of the determinantis a function
`of its elements.
`67
`developer (electrostatography). A material or materi-
`als that may be used in development. See: electro-
`statography.
`236,191
`development (electrostatography). The act of render-
`ing an electrostatic image viewable. See: electro-
`statography.
`19]
`development cycle. See: software developmentcycle.
`developmentlife cycle. See: software development cy-
`cle.
`434
`development methodology (software). A systematic
`approach to the creation of software that defines de-
`velopment phases and specifies the activities, prod-
`ucts, verification procedures, and completion criteria
`for each phase. See: software; verification procedures.
`434
`developmentspecification. Synonymous with require-
`ments specification in DOD usage.
`434
`deviation (1) (navigation aid terms). The angle between
`the magnetic meridian and the axis of a compass card.
`Indicates the offset of the compass card from magnetic
`north.
`526
`(2) (automatic control). Any departure from a desired
`or expected value or pattern.
`56,219,206
`
`(3) (metric practice). Variation from a specified di-
`mensionor design requirement, usually defining upper
`and lower limits. See: tolerance.
`21
`(4) (nuclear power quality assurance). A departure
`from specified requirements.
`417
`deviation distortion (data transmission). Distortion in
`an FM receiver due to inadequate bandwidth and
`inadequate amplitude modulation Tejection, or inad-
`quate discriminatorlinearity.
`59
`deviation factor (wave)
`(rotating machinery). The
`ratio of the maximumdifference between correspond-
`ing ordinates of the wave and of the equivalent sine
`wave whenthe wavesare superposed in such a way as
`to make this maximum difference as small as possible.
`Note: The equivalent sine waveis defined as having
`the same frequency and the same root-mean-square
`value as the wave being tested. See: direct-axis syn-
`chronous impedance (rotating machinery).
`63
`deviation, frequency. See: frequency deviation.
`deviation from a sine wave (converter characteristics)-
`(self-commutated converters)(harmonic control and
`reactive compensation ofstatic powerconverters). A
`single number measureof the distortion of a sinusoid
`due to harmonic components.It is equal to the ratio
`of the absolute value of the maximum difference be-
`tween the distorted wave and the fundamental to the
`crest value of
`the fundamental. See: maximum
`theoretical deviation from a sine wave.
`584,533
`deviation from asine wave, maximum theoretical. See:
`maximum theoretical deviation from a sine wave.
`deviation integral, absolute (automatic control). The
`time integral of the absolute valueof the system devia-
`tion following a stimulus specified as to location, mag-
`nitude, and time pattern. Note: The stimulus com-
`monly employedis a step input,
`56
`deviation ratio (frequency-modulation system) (data
`transmission). The ratio of the maximum frequency
`deviation to the maximum modulating frequency of
`the system.
`59
`deviation sensitivity (1) (navigation aid terms). The
`rate of change of course indication with respect to the
`change of displacement from the course line.
`
`526
`(2) (frequency-modulation receivers). The least fre-
`quency deviation that produces a specified output
`power.
`339
`deviation, steady-state (control). The system deviation
`after transients have expired. Note: For the purpose of
`this definition, drift is not considered to be a transient,
`See: deviation.
`206,329
`deviation system (control). The instantaneous value of
`the ultimately controlled variable minus the com-
`mand. Note: The use of system error to mean a system
`deviation with its sign changed is deprecated, Syn:
`system overshoot. See: deviation.
`206,105
`deviation, transient (control). The instantaneous value
`of the ultimately controlled variable minusits steady-
`state value. Syn: transient overshoot, See: deviation.
`206,105
`device (1)(electrical equipment)(supervisory control,
`data acquisition, and automatic control). An operat-
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`device address
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`257
`
`diagnostic routine
`
`TSLi—ai
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`<a
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`Se_
`
`ing element such as a relay, contactor, circuit breaker,
`switch, valve, or governor used to perform a given
`function in the operation of electrical equipment.
`570
`(2)(FASTBUS device)(FASTBUS acquisition and
`control). Any equipment capable of connecting to a
`segment and responding to the mandatory features of
`the FASTBUSprotocol.
`480
`(3)(general-system term)(696 interface devices). A
`circuit or logical group ofcircuits resident on one or
`more boards capable of interacting with other such
`devices through the bus.
`538
`(4)(measuring longitudinal balance of
`telephone
`equipment operating in the voice band). An item of
`electric equipmentthat is used in connection with, or
`as an auxiliary to, other items of electric equipment.
`529
`(5) (nuclear power generating stations). An item of
`electric equipmentthat is used in connection with, or
`as an auxiliary to, other items of electric equipment.
`(For example, as used in this document (IEEE Std
`649-1980), a device is a starter, contactor, circuit
`breaker, relay, etcetera.
`28, 440
`(6) (electrical equipment) (station contro] and data
`acquisition). An operating element such as a relay,
`contractor, circuit breaker, switch, valve, or governor
`used to perform a given function in the operation of
`electrical equipment.
`403
`(7) (packaging machinery). A unit of an electrical
`system which is intended to carry but not consume
`electrical energy.
`429
`device address (DA)(FASTBUSacquisition and con-
`trol). The (32-m)-bit identifying number assigned to a
`FASTBUSdevice that is compared with the signals on
`the address/data (AD)lines during a logical primary
`address cycle of a FASTBUS operation. The device
`address is formed by the group and module address
`fields. The (remaining) low-order m-bits are assigned
`to the internal addressfield.
`480
`device class--broadcast (FASTBUSacquisition and
`control). Selective broadcast-class
`specified by
`CSR#7 (control and status register #7). Controls
`device response to subsequent cycles within the
`broadcast.
`480
`device rise time (DRT) (photomultipliers for scintilla-
`tion counting). The mean time difference between the
`10- and 90-percent amplitude points on the output
`waveform for full cathode illumination and delta-
`function excitation. DRT is measured with a repetitive
`delta-function light source and a sampling oscillo-
`scope. The trigger signal for the oscilloscope may be
`derived from the device output pulse, so that light
`sources suchas thethescintillator light source may be
`employed.
`117
`dew withstand voltage test (metal-enclosed bus and
`calculating losses in isolated-phase bus). A test to
`determine the ability of the insulating system to with-
`stand specified overvoltages for a specified time with-
`out flashover or puncture while completely covered
`with dew.
`574
`dezincification. Parting of zinc from an alloy (parting
`
`is the preferred term). Note: Other termsin this cate-
`gory,
`such as denickelification, dealuminification,
`demolybdenization, etcetera, should be replaced by
`the term parting. See: electrometallurgy.
`205
`DF (direction finder). See: radio direction finder.
`DF(direction finder) antenna (navigation aid terms).
`Any antenna used for radio direction finding.
`
`526
`DF(direction finder) antenna system (navigation aid
`terms). One or more DFantennas, their combining
`circuits and feeder systems, together with the shield-
`ing andall electrical and mechanical items up to the
`termination at the receiver-input terminals.
`526
`DF (direction finder) noise level
`(navigation aid
`terms). In the absenceofthe desired signals, the aver-
`age power or rms (root-mean-square) voltage at any
`specified point in a direction finder system circuit.
`Note:In rf (radio frequency) and audio channels, The
`DF noise level is usually measured in terms of the
`power dissipated in suitable termination. In a video
`channel,it is customarily measuredin termsof voltage
`across a given impedance, or of the cathode-ray de-
`flection.
`526
`DF (direction finder)
`sensitivity (navigation aid
`terms). That field strength at the DF antenna,in mi-
`crovolts per meter, which producesa ratio of signal-
`plus-noise to noise, equal to 20 dB (decibels) in the
`receiver output, the direction of arrival of the signal
`being such as to produce maximum pickup in the DF
`antenna system.
`526
`DF. See: direction-finder; radio direction-finder.
`DF noiselevel. In the absenceof the desired signals, the
`average poweror rmsvoltage at any specified point in
`a direction finder system circuit. Note: In radio-fre-
`quency and audio channels,the direction finding noise
`level is usually measured in terms of the power dis-
`sipated in suitable termination. In a video channel,it
`is customarily measured in terms of voltage across a
`given impedance, or of the cathode-ray deflection.
`
`13
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`DFsensitivity. That field strength at the DF antenna,
`in microvolts per meter, which produces a ratio of
`signal-plus-noise to noise equal to 20 decibels in the
`receiver output, the direction of arrival of the signal
`being such as to produce maximum pickup in the
`direction finding antenna system.
`13
`dg. See: decilog.
`diagnostic (software). (1) Pertaining to the detection
`and isolation offaults or failures. (2) A message gener-
`ated by a computer program indicating possible faults
`in another system component, for example, a syntax
`fault flagged by a compiler. See: compiler; computer
`program; failure; fault; system component; syntax.
`434
`diagnostic factor (evaluation of thermal capability) (-
`thermalclassification of electric equipment and elec-
`trical insulation). A variable or fixed stress, which can
`be applied periodically or continuously during an ac-
`celerated test, to measure the degree of aging without
`in itself influencing the aging process.
`506
`diagnostic routine (1) (computer). A routine designed
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