GB/T 33014.3-2016Road vehicles -- Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy -- Part 3: Transverse electromagnetic (TEM) cell (English PDF)

Foreword

GB/T 33014 "Road vehicles - Component test methods for electrical/electronic

disturbances from narrowband radiated electromagnetic energy" consists of the

following parts.

- Part 1.General;

- Part 2.Absorber-lined shielded enclosure;

- Part 3.Transverse electromagnetic (TEM) cell;

- Part 4.Bulk current injection (BCI);

- Part 5.Stripeline;

- Part 7.Direct radio frequency (RF) power injection;

- Part 8.Magnetic field immunity;

- Part 9.Portable transmitter simulation;

- Part 10.Conduction immunity method for extended audio range;

- Part 11.Reverberation chamber.

This Part is Part 3 of GB/T33014.

This Part is drafted in accordance with the rules given in GB/T 1.1-2009.

This Part uses the re-drafting method to modify and adopt ISO 11452-3.2001 "Road

vehicles - Component test methods for electrical disturbances from narrowband

radiated electromagnetic energy - Part 2.Transverse electromagnetic (TEM) cell".

The technical differences between this Part and ISO 11452-3.2001 are as follows.

- PREPARE Clause 1 according to the provisions of GB/T 1.1-2009;

- REPLACE the reference standard ISO 11452-1 WITH GB/T 33014.1 modifying

and adopting ISO 11452-1;

- The artificial network in Annex C of the original international standard references

CISPR25, which is modified to the equivalent GB/T 33014.2.At the same time add

GB/T 33014.2 in the normative references;

- For consistency in understanding and presentation with Part 1, I, II, III, IV, V of

Table C.1 are changed to L1, L2, etc., and I, II, III, etc. are understood as state I,

II, III, etc.;

- Equation (B.1) in the original international standard is wrong, which is amended in

this Part.

The following editorial changes have been made in this Part.

- DELETE the foreword, introduction and bibliography of the original international

standard.

This Part is proposed by Ministry of Industry and Information Technology of the

People's Republic of China.

This Part is under the jurisdiction of National Technical Committee of Auto

Standardization (SAC/TC 114).

Drafting organizations of this Part. China Automotive Technology & Research Center,

Passenger Car Company of Shanghai SAIC Motor Corporation Limited, Suzhou Test

Electronic Technology Co., China Electronics Standardization Institute, Shenzhen

Hsac Electronics Co., Ltd., Commercial Vehicle Technology Center of Shanghai SAIC

Motor Corporation Limited, Shanghai Volkswagen Automobile Co., Ltd., Changchun

Automobile Testing Center, Centre Testing International Group Co., Ltd., Bosh

Automotive Products (Suzhou) Co., Ltd., Toyota Automotive Technology Center (China)

Co., Ltd.

Main drafters of this Part. Xu Xiuxiang, Ding Yifu, Ma Fangchi, Sun Chengming, Cui

Qiang, Wang Xibin, Chen Yanlei, Liu Xinliang, Lin Yanping, Liu Xin, Deng Xianghong,

Li Yunhong, Miu Weijia, Lu Bin.

Road vehicles - Component test methods for

electrical/electronic disturbances from narrowband

radiated electromagnetic energy - Part 3.Transverse

electromagnetic (TEM) cell

1 Scope

This Part of GB/T 33014 specifies the immunity test for electrical/electronic

components to continuous electrical disturbances from narrowband radiated

electromagnetic energy - transverse electromagnetic (TEM) cell.

2 Normative references

The following referenced documents are indispensable for the application of this

document. For dated references, only the dated edition cited applies. For undated

references, the latest edition of the referenced document (including all amendments)

applies.

GB/T 33014.1 Road vehicles - Component test methods for electrical/electronic

disturbances from narrowband radiated electromagnetic energy - Part 1.General

(GB/T 33014.1-2016, ISO 11452-1.2005, MOD)

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 33014.1

apply.

4 Test conditions

For transverse electromagnetic (TEM) cell, the useful frequency range is 0.01 MHz to

200 MHz. The upper frequency range limit of the TEM cell is a direct function of the

TEM cell dimensions. See annex A for suggested cell dimensions.

5 Test apparatus and instrumentation

The TEM cell used for this test is a rectangular coaxial line with a 50 ohm characteristic

impedance (see Figure 1). The device under test (DUT) is exposed to a uniform TEM

field.

The shield shall be in electrical contact with the cell floor, but shall not be in contact

with the case of the DUT.

6 Test

Prior to performing the test, a test plan shall be generated which shall cover the

following.

Make a net, or output, power (see Figure 2) measurement and calculate the electric

field using equation 1.

As required by the test plan, a test report shall be submitted detailing information on

the test equipment used, systems tested, frequencies, power levels, system

interactions and other relevant information regarding the test.

Annex A

(informative)

TEM cell dimensions

The dimensions of a typical TEM cell are shown in Figure A.1 and given in Table A.1.

Dimensions in millimetres

Annex B

(informative)

Calculations and measurements of TEM-cell frequency range

The useful frequency range for each TEM cell and its test set-up can be determined

by one of two methods using instrumentation (e.g. a network analyzer).

Annex C

(informative)

Installation of external components and low pass filter design

The wiring in the connector panel between connector and the coaxial connectors

shown in Figure 3 shall be done with 50 ohm coaxial cable to transfer the 50 ohm RF-

impedance from the low pass filters attached to the coaxial connectors in the connector

panel to the connector in the TEM cell wall.

Annex D

(informative)

Function performance status classification (FPSC)

Suggested test severity levels and the frequency bands of this Part are given in Table

D.1 and Table D.2, respectively.

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