CISPR 16-2:2003
(Main)Specification for radio disturbance and immunity measuring apparatus and methods - Part 2: Methods of measurement of disturbances and immunity
Specification for radio disturbance and immunity measuring apparatus and methods - Part 2: Methods of measurement of disturbances and immunity
The second part of CISPR 16 specifies the methods of measurement ofEMC phenomena in the frequency range 9kHz to 18 GHz. It deals with disturbance measurements and immunity measurements.
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INTERNATIONAL
CISPR
ELECTROTECHNICAL
16-2
COMMISSION
Second edition
2003-07
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Specification for radio disturbance and
immunity measuring apparatus and methods –
Part 2:
Methods of measurement of
disturbances and immunity
Spécification pour les appareils et méthodes de mesure
des perturbations radioélectriques et de l'immunité –
Partie 2:
Méthodes de mesure des perturbations
et de l'immunité
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INTERNATIONAL
CISPR
ELECTROTECHNICAL
16-2
COMMISSION
Second edition
2003-07
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Specification for radio disturbance and
immunity measuring apparatus and methods –
Part 2:
Methods of measurement of
disturbances and immunity
Spécification pour les appareils et méthodes de mesure
des perturbations radioélectriques et de l'immunité –
Partie 2:
Méthodes de mesure des perturbations
et de l'immunité
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For price, see current catalogue
– 2 – CISPR 16-2 IEC:2003(E)
CONTENTS
FOREWORD . 6
SECTION 1: GENERAL
1.1 Scope . 8
1.2 Normative references . 8
1.3 Definitions. 8
SECTION 2: DISTURBANCE MEASUREMENTS
2.1 Types of disturbance to be measured .12
2.1.1 Types of disturbance .12
2.1.2 Detector functions.13
2.2 Connection of measuring equipment.13
2.2.1 Connection of associated equipment.13
2.2.2 Connections to RF reference ground.13
2.2.3 Connection between the EUT and the artificial mains network .13
2.3 General measurement requirements and conditions.14
2.3.1 Disturbance not produced by the equipment under test .14
2.3.2 Measurement of continuous disturbance .14
2.3.3 Operating conditions of the EUT .15
2.3.4 Interpretation of measuring results.15
2.3.5 Measurement times and scan rates for continuous disturbance .16
2.4 Measurement of disturbances conducted along leads, 9 kHz to 30 MHz .22
2.4.1 Introduction .22
2.4.2 Measuring equipment (receivers, etc.) .22
2.4.3 Associated measuring equipment.23
2.4.4 Equipment test configuration.25
2.4.5 System test configuration for conducted emissions measurements.41
2.4.6 In situ measurements .44
2.5 Measurements using the absorbing clamp, 30 MHz to 1 000 MHz .46
2.5.1 General .46
2.5.2 Measurements.46
2.6 Measurement of radiated disturbances .47
2.6.1 Introduction .47
2.6.2 Field-strength measurements in the frequency range 9 kHz to 1 GHz .48
2.6.3 Field-strength measurements in the frequency range 1 GHz to 18 GHz .56
2.6.4 Substitution method of measurement in the frequency range of 30 MHz
to 18 GHz .58
2.6.5 Measurements of in situ equipment.60
2.6.6 Measurement in a loop antenna system .67
SECTION 3: IMMUNITY MEASUREMENTS
3.1 Immunity test criteria and general measurement procedures.69
3.1.1 General measurement method.69
3.1.2 Immunity degradation criteria.71
3.1.3 Product specification details .71
CISPR 16-2 IEC:2003(E) – 3 –
3.2 Method of measurement of immunity for conducted signals.72
3.2.1 Coupling units.74
3.2.2 Measurement set-up .74
3.2.3 Method of measurement of input immunity .74
3.3 Method of measurement of immunity to radiated electric field interference .76
3.3.1 Measurements using the TEM mode .76
3.3.2 Measurement using absorber-lined shielded rooms .79
3.3.3 Measurements using an open area test site (OATS).82
SECTION 4: AUTOMATED MEASUREMENTS
4.1 Automated measurements Automated measurement of emissions .84
4.1.1 Introduction: Precautions for automating measurements .84
4.1.2 Generic measurement procedure .84
4.1.3 Prescan measurements .85
4.1.4 Data reduction .87
4.1.5 Emission maximization and final measurement .87
4.1.6 Post processing and reporting.88
SECTION 5: FACTORS INFLUENCING MEASUREMENT ACCURACY
5.1 Factors influencing measurement accuracy .88
5.1.1 Accuracy of measurements.89
5.1.2 Avoidance of extraneous signals and effects .89
Annex A (informative) Guidelines to connection of electrical equipment to the artificial
mains network (see 2.2) .90
Annex B (informative) Use of spectrum analyzers and scanning receivers (see 2.3) .98
Annex C (informative) Historical background to the method of measurement of the
interference power produced by electrical household and similar appliances in
the VHF rang (see 3.1) .101
Annex D (informative) Decision tree for use of detectors for conducted measurements
(see 2.4.2.1).103
Annex E (informative) Measurement of disturbances in the presence of ambient
emissions.105
Annex F (informative) Example of the uncertainty budget .118
Figure 1 – Measurement of a combination of a CW signal (“NB”) and an impulsive
signal (“BB”) using multiple sweeps with maximum hold. 19
Figure 2 – Example of a timing analysis . 20
Figure 3 – A broadband spectrum measured with a stepped receiver . 21
Figure 4 – Intermittent narrowband disturbances measured using fast short repetitive
sweeps with maximum hold function to obtain an overview of the emission spectrum . 21
Figure 5 – Test configuration: table-top equipment for conducted disturbance
measurements on power mains (see 2.4.4.1 and 2.4.4.2). 26
Figure 6 – Optional test configuration for an EUT with only a power cord attached
(see 2.4.4.1). 28
Figure 7 – Test configuration: floor-standing equipment (see 2.4.4.1 and 2.4.5.2.2). 29
Figure 8 – Test configuration: floor-standing and table-top equipment (see 2.4.4.1 and
2.4.5.2.2) . 30
– 4 – CISPR 16-2 IEC:2003(E)
Figure 9 – Schematic of conducted disturbance voltage test configuration (see 2.4.4.1
and 2.4.5.2.2). 31
Figure 10 – Equivalent circuit for measurement of common mode disturbance voltage
for Class I (grounded) EUT (see 2.4.4.2.1). 32
Figure 11 – Equivalent circuit for measurement of common mode disturbance voltage
for Class II (grounded) EUT (see 2.4.4.2.2). 34
Figure 12 – RC element for artificial hand (see 2.4.4.2.3). 35
Figure 13 – Portable electric drill with artificial hand (see 2.4.4.2.3). 35
Figure 14 – Portable electric saw with artificial hand (see 2.4.4.2.3) . 35
Figure 15 – Schematic diagram for simulation of telecommunication lines (T-1 network or
telecom impedance simulation network) (see 2.4.4.3.2) . 38
Figure 16 – Measuring example for voltage probes (see 2.4.4.4.1) . 39
Figure 16a – Measurement arrangement for two-terminal regulating controls . 39
Figure 17 – Test configuration for absorbing clamp (see 2.5.2) . 47
Figure 18 – Concept of electric field strength measurements made on an open area test site
with the direct and reflective rays arriving at the receiving antenna (see 2.6.2.2) . 48
Figure 19 – Typical test set-up in FAR, where a, b, c and e depend on the room
performance. 52
Figure 20 – Typical test set-up for table-top equipment within the test volume of a FAR . 54
Figure 21 – Typical test set-up for floor standing equipment within the test volume
of a FAR.
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