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| PDF |: IEC CISPR 11:2010 Industrial, scientific and medical equipment – Radio-

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| PDF |:  - 120 页数         IEC CISPR 11
        Active         2010.05.01         Industrial, scientific and medical equipment – Radio-frequency disturbance characteristics – Limits and methods of measurement - Edition 5.1; Consolidated Reprint
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CONTENTS
FOREWORD..........................................................................................................................5
INTRODUCTION....................................................................................................................8
1 Scope..............................................................................................................................9
2 Normative references........................................................................................................9
3 Terms and definitions .....................................................................................................10
4 Frequencies designated for ISM use ...............................................................................11
5 Classification of ISM equipment ......................................................................................12
5.1 Information for the user .........................................................................................12
5.2 Separation into groups...........................................................................................12
5.3 Division into classes ..............................................................................................12
6 Limits of electromagnetic disturbances............................................................................13
6.1 General .................................................................................................................13
6.2 Group 1 equipment measured on a test site ...........................................................13
6.2.1 Limits of terminal disturbance voltage ........................................................13
6.2.2 Limits of electromagnetic radiation disturbance ..........................................14
6.3 Group 2 equipment measured on a test site ...........................................................17
6.3.1 Limits of terminal disturbance voltage ........................................................17
6.3.2 Limits of electromagnetic radiation disturbance ..........................................19
6.4 Group 1 and group 2 class A equipment measured in situ ......................................27
6.4.1 Limits of terminal disturbance voltage ........................................................27
6.4.2 Limits of electromagnetic radiation disturbance ..........................................27
7 Measurement requirements.............................................................................................29
7.1 General .................................................................................................................29
7.2 Ambient noise........................................................................................................29
7.3 Measuring equipment ............................................................................................29
7.3.1 Measuring instruments...............................................................................29
7.3.2 Artificial mains network ..............................................................................30
7.3.3 Voltage probe ............................................................................................30
7.3.4 Antennas ...................................................................................................30
7.3.5 Artificial hand.............................................................................................31
7.4 Frequency measurement .......................................................................................31
7.5 Configuration of equipment under test....................................................................31
7.5.1 General .....................................................................................................31
7.5.2 Interconnecting cables ...............................................................................31
7.5.3 Connection to the electricity supply network on a test site...........................32
7.6 Load conditions of equipment under test ................................................................33
7.6.1 General .....................................................................................................33
7.6.2 Medical equipment.....................................................................................33
7.6.3 Industrial equipment ..................................................................................34
7.6.4 Scientific, laboratory and measuring equipment..........................................35
7.6.5 Microwave cooking appliances ...................................................................35
7.6.6 Other equipment in the frequency range 1 GHz to 18 GHz..........................35
7.6.7 Single and multiple-zone induction cooking appliances ...............................36
7.6.8 Electric welding equipment.........................................................................36
7.7 Recording of test-site measurement results ...........................................................37
7.7.1 General .....................................................................................................37

CISPR 11 © IEC:2009+A1:2010 – 3 –
7.7.2 Conducted emissions.................................................................................37
7.7.3 Radiated emissions....................................................................................37
8 Special provisions for test site measurements (9 kHz to 1 GHz) ......................................37
8.1 Ground planes .......................................................................................................37
8.2 Measurement of mains terminal disturbance voltage ..............................................37
8.2.1 General .....................................................................................................37
8.2.2 Handheld equipment which are normally operated without an earth
connection .................................................................................................38
8.3 Radiation test site for 9 kHz to 1 GHz.....................................................................38
8.3.1 General .....................................................................................................38
8.3.2 Validation of the radiation test site (9 kHz to 1 GHz) ...................................39
8.3.3 Disposition of equipment under test (9 kHz to 1 GHz) .................................39
8.3.4 Radiation measurements (9 kHz to 1 GHz) .................................................39
8.4 Alternative radiation test sites for the frequency range 30 MHz to 1 GHz ................39
9 Radiation measurements: 1 GHz to 18 GHz ....................................................................40
9.1 Test arrangement ..................................................................................................40
9.2 Receiving antenna .................................................................................................40
9.3 Validation and calibration of test site ......................................................................40
9.4 Measuring procedure .............................................................................................40
10 Measurement in situ .......................................................................................................40
11 Safety precautions ..........................................................................................................41
12 Assessment of conformity of equipment ..........................................................................41
12.1 General .................................................................................................................41
12.2 Statistical assessment of compliance of series produced equipment.......................41
12.3 Equipment in small-scale production ......................................................................42
12.4 Equipment produced on an individual basis ............................................................42
12.5 Measurement uncertainty.......................................................................................42
13 Figures and flowcharts ....................................................................................................42
Annex A (informative) Examples of equipment classification .................................................46
Annex B (informative) Precautions to be taken in the use of a spectrum analyzer
(see 7.3.1) ............................................................................................................................48
Annex C (normative) Measurement of electromagnetic radiation disturbance in the
presence of signals from radio transmitters ...........................................................................49
Annex D (informative) Propagation of interference from industrial radio-frequency
equipment at frequencies between 30 MHz and 300 MHz.......................................................50
Annex E (informative) Recommendations of CISPR for protection of certain radio
services in particular areas....................................................................................................51
Annex F (informative) Frequency bands allocated for safety-related radio services ...............52
Annex G (informative) Frequency bands allocated for sensitive radio services ...................... 53
Bibliography ..........................................................................................................................54
Figure 1 – Test site ...............................................................................................................42
Figure 2 – Minimum size of metal ground plane .....................................................................43
Figure 3 – Disposition of medical (capacitive type) and dummy load (see 7.6.2.1) ..................43
Figure 4 – Circuit for disturbance voltage measurements on mains supply (see 7.3.3)............44

– 4 – CISPR 11 © IEC:2009+A1:2010
Figure 5 – Decision tree for the measurement of emissions from 1 GHz to 18 GHz of
class B, group 2 ISM equipment operating at frequencies above 400 MHz .............................44
Figure 6 – Artificial hand, RC element (see 7.3.5) ..................................................................45
Table 1 – Frequencies in the radio-frequency (RF) range designated by ITU for use as
fundamental ISM frequencies ................................................................................................12
Table 2 – Mains terminal disturbance voltage limits for class A group 1 equipment
measured on a test site .........................................................................................................14
Table 3 – Mains terminal disturbance voltage limits for class B group 1 equipment
measured on a test site .........................................................................................................14
Table 4 – Electromagnetic radiation disturbance limits for class A group 1 equipment
measured on a test site .........................................................................................................15
Table 5 – Electromagnetic radiation disturbance limits for class B group 1 equipment
measured on a test site .........................................................................................................16
Table 6 – Mains terminal disturbance voltage limits for class A group 2 equipment
measured on a test site .........................................................................................................18
Table 7 – Mains terminal disturbance voltage limits for class B group 2 equipment
measured on a test site .........................................................................................................18
Table 8 – Mains terminal disturbance voltage limits for induction cooking appliances .............19
Table 9 – Electromagnetic radiation disturbance limits for class A group 2 equipment
measured on a test site .........................................................................................................21
Table 10 – Electromagnetic radiation disturbance limits for class A EDM and arc
welding equipment measured on a test site ...........................................................................22
Table 11 – Electromagnetic radiation disturbance limits for class B group 2 equipment
measured on a test site .........................................................................................................23
Table 12 – Limits of the magnetic field strength for induction cooking appliances
intended for commercial use .................................................................................................24
Table 13 – Limits of the magnetic field induced current in a 2 m loop antenna for
induction cooking appliances for domestic use ......................................................................25
Table 14 – Electromagnetic radiation disturbance peak limits for group 2 equipment
producing CW type disturbances and operating at frequencies above 400 MHz.....................26
Table 15 – Electromagnetic radiation disturbance peak limits for class B group 2
equipment producing fluctuating disturbances other than CW and operating at
frequencies above 400 MHz ..................................................................................................26
Table 16 – Electromagnetic radiation disturbance weighted limits for class B group 2
equipment producing fluctuating disturbances other than CW and operating at
frequencies above 400 MHz ..................................................................................................27
Table 17 – Electromagnetic radiation disturbance limits for class A group 1 equipment
measured in situ ...................................................................................................................27
Table 18 – Electromagnetic radiation disturbance limits for class A group 2 equipment
measured in situ ...................................................................................................................28
Table 19 – The non-central t-distribution factor k as a function of the sample size n...............41
Table E.1 – Limits for electromagnetic radiation disturbances for in situ measurements
to protect specific safety-related radio services in particular areas .........................................51
Post time 2011-4-14 10:32:02 | Show all posts
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Post time 2011-4-28 08:58:38 | Show all posts
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Post time 2011-4-28 10:04:52 | Show all posts
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Post time 2011-4-28 21:31:12 | Show all posts
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Post time 2011-6-3 12:07:27 | Show all posts
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 Author| Post time 2011-6-4 13:16:17 | Show all posts



    | PDF |: IEC CISPR 11:2010 Industrial, scientific and medical equipment – Radio-frequency disturbance characteristics – Limits and methods of measurement - Edition 5.1; Consolidated Reprint
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Post time 2012-9-13 05:43:37 | Show all posts
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Post time 2013-6-21 10:39:49 | Show all posts
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