GB/T 29259-2012 PDF English
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| GB/T 29259-2012 | English | 125 |
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GB/T 29259-2012: Road vehicle - Electromagnetic compatibility terminology---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT29259-2012
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
T 04
Road vehicle-
Electromagnetic compatibility terminology
Issued on. DECEMBER 31, 2012
Implemented on. JUNE 1, 2013
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 4
Index... 16
Foreword
This Standard is proposed by Ministry of Industry and Information Technology of the
People’s Republic of China.
This Standard is under the jurisdiction of National Technical Committee on Automotive
of Standardization Administration of China (SAC/TC 114).
Drafting organizations of this Standard. China Automotive Technology Research
Center, Suzhou 3C Test Electronic Technology Co., Ltd., Shanghai Volkswagen
Automobile Co., Ltd., Shenzhen Hangsheng Electronics Co., Ltd.
Main drafters of this Standard. Xu Xiuxiang, Sun Chengming, Liu Xinliang, Ding Yifu,
Wang Xibin, Deng Xianghong.
Road vehicle –
Electromagnetic compatibility terminology
1 Scope
This Standard specifies terms and definitions related to electromagnetic compatibility
of road vehicles.
This Standard applies to M, N, O, L vehicles and electrical and electronic
systems/components, other motor vehicles may also refer to this Standard.
2 Normative references
The following documents are indispensable for the application of this document. For
dated references, only the dated edition applies to this document. For undated
references, the latest edition (including all modifications) applies to this document.
GB/T 4365-2003 Electrotechnical terminology - Electromagnetic compatibility
3 Terms and definitions
3.1
vehicle electromagnetic environment
The totality of electromagnetic phenomena presenting inside and outside the vehicle.
3.2
vehicle electromagnetic compatibility (EMC)
The ability of a vehicle and electrical and electronic system/component to function
satisfactorily in its electromagnetic environment without affecting other vehicles and
electrical and electronic systems/components in that environment.
3.3
electromagnetic disturbance
Any electromagnetic phenomenon which degrade the performance of a device,
equipment or system, or adversely affect living or non-living matter.
[GB/T 4365-2003, definition 161-01-05]
3.4
electromagnetic interference (EMI)
Degradation of the performance of an equipment, transmission channel or system
caused by an electromagnetic disturbance.
[GB/T 4365-2003, definition 161-01-06]
3.8
electromagnetic immunity
The electromagnetic phenomenon by which a vehicle and electrical and electronic
system/component resists electromagnetic disturbance, to avoid the degradation of
the performance.
3.9
immunity
The ability of a device, equipment or system to perform without degradation on the
presence of an electromagnetic disturbance.
[GB/T 4365-2003, definition 161-01-20]
3.12
human ESD model
A model using the capacitance and resistance to characterize the human body as the
electrostatic charge source in the vehicle environment.
3.13
ESD simulator
A test device for simulating a human ESD model.
3.14
conduction
The electromagnetic phenomenon which transfer energy through one or more than
one conductors.
3.15
coupling
The electromagnetic phenomenon by which electrical circuits interact with each other,
and the energy is transferred from one circuit to another.
3.17
de-coupling network
A circuit or device that reduces or eliminates the coupling to other circuits.
3.18
bandwidth
3.20
electromagnetic emission
The electromagnetic phenomenon by which electromagnetic energy emanates from a
source.
3.21
narrowband emission
An electromagnetic emission which has a bandwidth less than that of a particular
measuring apparatus or receiver. If the pulse repetition frequency of the signal is
greater than the measuring bandwidth of the instrument, it is also regarded as
narrowband emission.
3.22
broadband emission
An electromagnetic emission which has a bandwidth greater than that of a particular
measuring apparatus or receiver. If the pulse repetition frequency of the signal is less
than the measuring bandwidth of the instrument, it is also regarded as broadband
emission.
3.23
continuous conducted emissions
Noise voltage/current presents in the power line or other leads.
3.24
impulsive ignition noise
Electromagnetic emission which is produced within the ignition system of the vehicle,
unwanted and mainly of pulse nature.
3.25
ignition noise suppressor
A device used to limit impulsive ignition noise in a high voltage ignition line.
3.26
frequency sub-band
A certain part of frequency band specified for the measurement of frequency range, to
count and evaluate the data of frequency sweep measurement test.
3.30
transient
Pertaining to or designating a phenomenon or a quantity which varies between two
consecutive steady states during a time interval short compared with the time-scale of
interest. Used to describe a single pulse or burst.
3.31
peak amplitude
The maximum value of the transient amplitude.
3.32
pulse
A relatively stable transient with specific shape and time characteristics.
3.33
pulse duration
The duration between which the pulse value rises to 10 % peak value and falls to 10 %
peak value.
3.34
pulse rise time
Time required for the pulse value rises from 10 % peak value to 90 % peak value.
3.35
pulse fall time
Time required for the pulse value falls from 90 % peak value to 10 % peak value.
3.36
burst
A transient consists of a complex sequence of voltage changes.
3.37
burst duration
Time required for a series of complex transient voltages to change in a single burst.
3.38
time between bursts
The time from the end of a burst to the beginning of the next burst.
3.39
burst cycle time
The interval between the first pulse start points of two adjacent bursts.
3.44
forward power
The power provided by RF amplifier or signal generator output.
3.45
net power
The difference between the forward power and the reflected power.
3.46
standing wave ratio (SWR)
The ratio of the maximum amplitude to the adjacent minimum amplitude of the specific
field component of the standing wave on the transmission line.
3.47
test pulse
A representative pulse applied to the device under test.
3.48
test pulse severity
The severity of the test pulse level parameter.
3.49
screened room
A mesh or sheet metallic housing designed expressly for the purpose of separating
electromagnetically the internal and the external environment.
3.50
absorber lined shielded enclosure
The screened room with the internal top surface and the wall being installed with radio
frequency absorbing material. The screened room usually uses metal flooring, but the
frequency absorbing material can also be installed on the floor.
3.51
ground (reference) plane
A metal plane or conductive plane used as the common reference potential of the
tested equipment and test equipment.
3.52
artificial network (AN)
A device inserted in the supply mains lead of apparatus to be tested which provides,
in a given frequency range, a specified load impedance for the measurement of
disturbance voltages and which may isolate the apparatus form the supply mains in
that frequency range.
3.53
broadband artificial network
An artificial network inserted in the supply mains lead, signal line, control line and
support system of apparatus to be tested, which provides a controllable impedance in
all frequency ranges of a particular transmission.
3.57
tracking generator
A test signal (continuous wave) generator of which the frequency is locked at the
receiving frequency of the measuring instrument.
3.58
dual directional coupler
A four-terminal device consisting of two transmission lines coupled together. A single
traveling wave in any of the transmission lines induces a single traveling wave in
another transmission line, and the propagation direction of the later traveling wave
depends on the former.
3.59
current injection probe
A device for applying a current into the conductor without interrupting the conductor
and without significantly changing the circuit impedance.
3.60
current measuring probe
A device for measuring the current in a conductor without interrupting the conductor
and without significantly changing the circuit impedance.
3.61
coupling clamp
A device, having a certain size and electromagnetic characteristic, couples the
transient disturbance common mode to the circuit under test in the case of no electrical
connection.
3.62
transverse electromagnetic mode
The electromagnetic wave propagation mode of which the longitudinal component of
electric field and magnetic field strength is zero.
3.63
TEM cell
An enclosed system (often a rectangular coaxial line), in which a wave is propagated
in the transverse electromagnetic mode to produce a specified field for testing
purposes.
3.66
antenna matching unit
A device that forms/implements impedance matching in the antenna measurement
frequency range with a measuring meter with an impedance of 50 Ω.
3.67
polarization
The directional characteristic of a sinusoidal electromagnetic wave or field vector
determined by an electric field vector or any other specified field vector at a fixed point.
3.68
compression point
The signal level when the system output value is about to deviate from the theoretical
value of the ideal linear system, and the measurement system begins to become the
nonlinear system.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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