IEC 61000-4-22:2010

IEC 61000-4-22 ®
Edition 1.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-22: Testing and measurement techniques – Radiated emissions and
immunity measurements in fully anechoic rooms (FARs)

Compatibilité électromagnétique (CEM) –
Partie 4-22: Techniques d'essai et de mesure – Mesures de l'immunité et des
émissions rayonnées dans des enceintes complètement anéchoïques (FAR)

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IEC 61000-4-22 ®
Edition 1.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Electromagnetic compatibility (EMC) –
Part 4-22: Testing and measurement techniques – Radiated emissions and
immunity measurements in fully anechoic rooms (FARs)

Compatibilité électromagnétique (CEM) –
Partie 4-22: Techniques d'essai et de mesure – Mesures de l'immunité et des
émissions rayonnées dans des enceintes complètement anéchoïques (FAR)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XA
CODE PRIX
ICS 33.100.10; 33.100.20 ISBN 978-2-88912-229-5
– 2 – 61000-4-22 © IEC:2010
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.8
2 Normative references .8
3 Terms and definitions .9
4 FAR applications .10
4.1 Measurand for radiated immunity testing .10
4.2 Measurand for radiated emission measurements .11
5 FAR validation/calibration procedure .11
5.1 General .11
5.2 Validation set-ups.11
5.3 Test facility description.15
5.3.1 General .15
5.3.2 Test volume.15
5.3.3 Broadband antenna .15
5.3.4 Antenna cables.15
5.3.5 Set-up table.15
5.3.6 Turntable.16
5.3.7 Automated antenna polarization changer .16
5.3.8 Absorber configuration .16
5.4 Definition of quantities to be determined by the FAR validation procedure.16
5.5 Required sampling positions for FAR validation.17
5.6 FAR validation procedure .18
5.6.1 General .18
5.6.2 Type 1 validation set-up .18
5.6.3 Type 2 validation set-up .19
5.6.4 Type 3 validation set-up .19
5.6.5 Type 4 validation set-up .20
5.6.6 Calculation of C and s for all set-up types .20
dB
dB
,C
5.7 Validation requirement .20
6 Test set-up .21
Annex A (normative) Radiated immunity tests .26
Annex B (normative) Radiated emission measurements.31
Annex C (informative) Background on the system transducer factor and simultaneous
emissions/immunity validation method .34
Annex D (informative) Measurement uncertainties .37
Bibliography.50

Figure 1 – Type 1 validation block diagramme .12
Figure 2 – Type 2 validation block diagramme .12
Figure 3 – Type 3 validation block diagramme .13
Figure 4 – Type 4 validation block diagramme .13
Figure 5 – Locations of the sampling points for FAR validation .18
Figure 6 – Example test set-up for table-top equipment .23

61000-4-22 © IEC:2010 – 3 –
Figure 7 – Example test set-up for table-top equipment, top view.24
Figure 8 – Example test set-up for floor-standing equipment.24
Figure 9 – Example test set-up for floor-standing equipment, top view .25
Figure A.1 – Definition of d for immunity tests .28
measurement
Figure B.1 – Definition of d for emission measurements.32
measurement
Figure D.1 – Example of influence factors for emission measurements .37
Figure D.2 – Example of influences upon the immunity test method .44

Table 1 – Components required for the different validation set-up types .15
Table 2 – Validation criteria .21
Table D.1 – Measurement instrumentation uncertainty in a FAR for radiated emission
measurements in the frequency range 30 MHz to 1 000 MHz.38
Table D.2 – Measurement instrumentation uncertainty in a FAR for radiated emission
measurements in the frequency range 1 GHz to 18 GHz .39
Table D.3 – Measurement instrumentation uncertainty in a FAR for level setting for
immunity testing in the frequency range 30 MHz to 1 000 MHz .45
Table D.4 – Measurement instrumentation uncertainty in a FAR for level setting for
immunity testing in the frequency range 1 GHz to 18 GHz .46

– 4 – 61000-4-22 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION

INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
____________
ELECTROMAGNETIC COMPATIBILITY (EMC) –

Part 4-22: Testing and measurement techniques –
Radiated emissions and immunity measurements
in fully anechoic rooms (FARs)

FOREWORD
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