GB 4824-2001 Test methods and limits for electromagnetic disturbance characteristics of industrial, scientific and medical (ism) radio frequency equipment
Some standard content:
GB 4824--2001
All technical contents of this standard are mandatory. Preface
Preface
This standard is equivalent to the international standard CISPR11: 1997 "Measurement methods and limits of electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment" and its first amendment Amendment1: 1999. The main differences between this standard and GB4824-1996 are as follows: 1. Expanded scope of application: The frequency range is expanded from 9kHz to 18GHz to 9kHz400GHz. 2. Added two tips, Appendix E and Appendix F. 3． The definition of "click" is added to the definition, and limits are also specified for the click of relevant equipment. 4. Added Figure 5.
5． Limits in the range of 9kHz to 150kHz have been established for induction cookware. 6. Added limits for "household and commercial" equipment in the frequency range of 9kHz to 30MHz. 7. Specified limits for equipment operating in the frequency range of (1 to 18) GHz. 8. Added 9kHz to equipment. Requirements for 30MHz magnetic field induced current. 9. Delete Appendix D and Appendix F in the original standard. 10. Added the conformity assessment for "small-scale production equipment". Appendix C of this standard is the standard appendix, and Appendix A, Appendix B, Appendix D, Appendix E and Appendix F are reminder appendices. The applicable frequency range of this standard is 9kHz ~ 400GHz. This standard will replace GB4824--1996 "Measurement methods and limits of electromagnetic interference characteristics of industrial, scientific and medical (ISM) radio frequency equipment" from the date of implementation.
This standard is proposed by the National Radio Interference Standardization Technical Committee. This standard is under the jurisdiction of the National Radio Interference Standardization Technical Committee. The organization responsible for drafting this standard: Shanghai Electrical Apparatus Research Institute. Units participating in the drafting of this standard: Standardization Planning Institute of the State Administration of Radio, Film and Television, National Medical Device Quality Supervision and Inspection Center, Guangzhou Electrical Equipment Research Institute, Telecommunications Transmission Research Institute of the Ministry of Information Industry, Shenyang Dongda Alpine Digital Medical System Co., Ltd., Shanghai Siemens Medical Devices Co., Ltd.
The main drafters of this standard: Liu Jinglin, Yang Ziyou, Zou Dongyi, Ge Xiaosen, Yang Chunrong, Wang Zuli, Tian Yanfang, Mei Weiming. 295
GB 4824--2001
IEC Preface
1) In view that (the various national committees and other member organizations of ISPR have some special interests in some technical issues, therefore , the formal resolutions or agreements drawn up by the branch on these technical issues express the international consensus as much as possible. 2) These resolutions or agreements are in the form of recommended standards for international use, and in this sense are CISPR. Accepted by various national committees and other member organizations.
3) In order to promote international unification, CISPR hopes that all national committees shall adopt the standards recommended by CISPR as their national standards with the permission of their country. Any divergence between CISPR recommended standards and corresponding national standards should, as far as possible, be clearly stated in the latter.
This standard was formulated by the CISPRB Branch (Concerning the Interference of Industrial and Medical Radio Frequency Equipment). Amendment 1 (1999) was formulated by the CISPRB Subcommittee (Regarding Interference from Industrial, Scientific and Medical Radio Frequency Equipment). This standard is the third edition, which will replace the second edition published in 1990 and its amendments 1 (1996) and 2 (1996). According to IEC Guide 107, this standard has the status of a product standard. The contents of this standard are based on the following documents: FDIS
CISPR/B(CO)23
CISPR /B(CO)28
CISPR/B(CO)31||tt| |CISPR /B(CO)35
CISPR/B/147/FDIS
CISPR/B/148/FDIS
CISPR/B/189/FDIS
CISPR /B/222/FDIS
Reports on voting
CISPR/B(CO)25
CISPR/B(CO)25A
CISPR/B(CO)30
CISPR/B(CO)32A
CISPR/B/132/RVD
CISPR/B/158/RVD
CISPR/B/159/RVD|| tt||CISPR/B/200/RVD
CISPR/B/228/RVD
All information on the voting to adopt this standard can be obtained from the voting report listed in the table above. Appendix C is an integral part of this standard.
Appendix A, Appendix B, Appendix D, Appendix E and Appendix F are for reference only. The main content of this standard is based on the following CISPR Recommended Publication No. 39/2: CISPR Recommended Publication No. 39/2 Measurement methods and limits for electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment CISPR considerations To:
a) Radio frequency equipment is an important source of disturbance; b) The measurement method of this disturbance has been specified in the CISPR publication; c) It is allocated by the International Telecommunication Union (ITU) for use in engineering Radiation of certain frequencies from medical equipment is not restricted. Recommendation:
The latest version of CTSPR11 should be applied to the limits and measurement methods of industrial, scientific and medical equipment. 296
1 General Provisions
National Standards of the People's Republic of China
Measurement methods and limits for electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment -frequency eguipment
Electromagnetic disturbance characteristics. -Limits and methods of measurement1.1 Scope of application
GB 4824—2001
idt CISPR 11: 1997
replaces GB482-1 ·1996
This standard specifies the limits and measurement methods for the electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) equipment (hereinafter referred to as ISM equipment) and spark corrosion equipment defined in Chapter 2. Note: The values ??recommended in this standard are formulated based on the probability that the test patient may have a dry challenge. If interference occurs, additional measures must be taken. This standard specifies the limits of the frequency range from 9kHz to 400GHz and the measurement method of electromagnetic interference. This standard also applies to industrial, scientific and medical (ISM) lighting equipment operating in the industrial and medical frequency bands 2.45GHz and 5.8GHz. For requirements for other types of lighting equipment, see the regulations of GB17743. 1.2 Quotation Standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB1002-1996 Single-phase plug and socket type, basic parameters and dimensions for household and similar purposes (idt60083: 1975) GB/T4365-1995 Electromagnetic compatibility terminology (idt1EC60050-161: 1990) GB/T6113.1-1995 Radio disturbance and immunity Specification for measuring equipment (eqVCISPR16-1:1993) GB/T6113.2--1998 Radio disturbance and immunity measurement methods (eqvCISPR16-2:1996) GB/T9383-1999 Immunity of sound and television broadcast receivers and related equipment Limits and measurement methods (eqVCISPR20:1998)
GB/T16607--1996 Measurement methods for radiated interference from microwave ovens above 1 GHz (enVCISPR19:1983) GB17743--1999 Limits for radio disturbance characteristics of electrical lighting and similar equipment Values ??and measurement methods (idtCSPR15: 1996) IEC60705: 1999 Performance measurement method for household microwave ovens IEC61689: 1996 Performance requirements and measurement methods for ultrasonic-physiotherapy systems with a frequency range of 0.5MHz 5MHz 2 Definition
This standard adopts GB/T4365 except In addition to the prescribed definitions, the following definitions apply: 2.1 ISM equipment and ISM appliance are equipment or appliances that generate and/or use radio frequency energy for industrial, scientific, medical, household or similar purposes, but do not include equipment used in telecommunications, information technology and other national standards. 2.2 Electromagnetic radiation [GB/T 4365 1.10] The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China approved on 2001-11-05 for implementation on 2002-11-05
29
GB 4824--2001| |tt||a) The phenomenon of energy being emitted from a source into space in the form of electromagnetic waves, b) Energy propagating in space in the form of electromagnetic waves. Note: The meaning of the word "electromagnetic radiation" can sometimes also include induction phenomena. 2.3 The boundary of the equipment under test refers to the imaginary straight line boundary containing the simple geometric shape of the equipment under test. All interconnecting cables should be included within this boundary. 2.4 The amplitude of click
exceeds the continuous harassment limit, the duration does not exceed 200ms, and the next harassment is at least 200ms away. Both time intervals are related to the level of the continuous disturbance limit. A click may consist of a series of pulses, in which case the relevant time is from the start of the first pulse to the end of the last pulse. 3 Frequencies used by industrial and medical equipment
The frequencies assigned to industrial and medical equipment in my country as fundamental frequencies are shown in Table 1. Note: In individual countries, industrial and medical equipment may be assigned to use different or additional frequencies. Table 1 Fundamental frequency used by industrial, scientific and medical equipment 1), 13 center frequency
MHz
6.780
13.560
27.120
40.680||tt| |2450
5800
24 125
61250
122500
245000
Note
Frequency range||tt| |MEI2
6.7656.795
13. 553~13. 567
26.957-27.283
40.66-40.70
2 400-2 500|| tt||5 725 ~5875
24 00024250
61 000~61500
122 000 --123 000
244 000 ~~ 246 000
1) Table 1 adopts ITU Radio Regulation Resolution No. 63. Maximum shooting limit? 》
under consideration
unrestricted
unrestricted
unrestricted
unrestricted
unrestricted|| tt||Unrestricted
under consideration
under examination
under consideration
footnote to the assignment of the ITU Radio Regulations
frequency list Terminal number
5242)
534
546
548
752
806
881
9112)
9162
9222
2) The use of these frequency bands must be coordinated with the radio communication business departments that may be affected and approved by the national radio administrative department.
3) "Unrestricted" is applicable to the fundamental wave and all other frequency divisions in the assigned lazy section, but meets the immunity requirements (such as GB/T9383) and is placed close to the industrial, scientific and medical When using the device, special measures may need to be taken to achieve compatibility. Grouping and Classification of Industrial and Scientific Medical Equipment
Manufacturers should mark the industrial and scientific medical equipment they produce to indicate the group and category of the equipment. Note: For examples of grouping and classification of industrial and medical equipment, please refer to Appendix A. 4. Group 1
Group 1 industrial and scientific medical equipment (hereinafter referred to as Group 1 equipment) is all industrial and scientific medical equipment that intentionally generates and/or uses coupled radio frequency energy for the purpose of performing its own functions. Adoption instructions:
13 433.920MHz and 915.000MIHIz in the original CISPR11:1997 Table 1 are not used in our country, so they are used in Table 1. 298
Prepare.
Group 2 industrial, scientific and medical equipment (hereinafter referred to as Group 2 equipment) GB 4824-2001
Intentional generation and/or use of electromagnetic radiation and radio frequency energy for the needs of material processing, spark corrosion and other functions All components and assemblies of engineering and medical equipment that do not constitute independent engineering and medical functions are not within the test requirements and limits of this standard. 4.2 Classification
Class A equipment
Equipment used in non-domestic and facilities not directly connected to the residential low-voltage power supply network. Class A equipment shall meet Class A limits.
Note
1 Class A equipment that does not meet the Class A limits but does not cause unacceptable degradation to radio services must be applied for on a case-by-case basis and approved by the national radio regulatory agency before use.
2Although Class A limits are intended for industry and commerce, the relevant authorities may permit the installation and use of Class A equipment in domestic installations or installations directly connected to the domestic power supply network, provided that additional suppression measures are necessary. . Class B equipment
Equipment for domestic use and installations directly connected to the residential low-voltage power supply network. Class B equipment shall meet Class B limits.
5 Electromagnetic disturbance limit value
Class A industrial and scientific medical equipment can be measured at the test site or on-site by the manufacturer. Note: Due to factors such as the size, structural complexity and operating conditions of the equipment under test, some industrial and medical equipment can only be measured on site to determine whether it meets the radiation disturbance limits specified in this standard.
Class B industrial, scientific and medical equipment should be measured at the testing site. The disturbance limits for the following equipment are under consideration: radio frequency arc welding equipment;
11
radiation equipment;
—surgical radiofrequency diathermy equipment.
The limits in Tables 2 to 6 apply to various electromagnetic disturbances at all frequencies not included in Table 1. Smaller limits should be used at transition frequencies. Industrial and medical lighting equipment operating in the industrial and medical frequency bands of 2.45GHz and 5.8GHz adopts the limits of Group 2 Class B industrial and medical equipment. 5.1 Terminal interference voltage limit
The equipment under test shall:
1) Meet both the specified average limit when measured with an average value detector receiver and when measured with a quasi-peak detector receiver The specified quasi-peak limit (see 6.2); or
2) meets the average limit (see 6.2) when measured with a quasi-peak detection receiver. Disturbance voltage limits for signal lines are under consideration. 5.1.19 kHz ~ 150 kHz frequency band
In the 9kHz ~ 150kHz frequency band, in addition to induction cookers, the disturbance voltage limit of the equipment power terminal is still under consideration. There are no specified limits for Group 2 Class A industrial, scientific and medical equipment measured in the field, unless otherwise specified in this standard. 5.1.2150kHz～30 MHz frequency band
5.T.2.1 Continuous harassment
When the equipment is measured at the test site, use the 50Q/50μH artificial power network or voltage probe specified in GB/T6113.1 (see 6.2 .3 and Figure 4). The power terminal disturbance voltage limits in the 150kHz~~30MHz frequency band are specified in Table 2a and Table 2b, but the power terminal disturbance voltage limits in the frequency band assigned to industrial, scientific and medical equipment in Table 1 are still under consideration. 299
GB 4824—2001
There are no specified limits for Group 2 Class A industrial and scientific medical equipment measured on site, unless otherwise specified in this standard. Table 2a When measured at the test site, Class A equipment power supply Terminal disturbance voltage limit Class A equipment limit value
dBμy
Yan Duan
MHa
0. 15 ~ 0, 5
0.505||tt ||5~30
quasi-peak
79
73
73
1 group
flat goose value
66
60
60
The power supply current is 100A/phase. Use a voltage probe to measure. Note: Care should be taken to meet the requirements of Han current. Table 2b
Frequency band
MHz
0.15~0.50
0.50s
5~30
Note: Pay attention to meet the leakage current requirements Require. 5.1.2.2 intermittent harassment
quasi-peak
100
86
90~70
2 groups
average value
90
76
80~60
Linear decrease with the logarithm of frequency
Linear decrease with the logarithm of stem rate
Male Peak
130
125
115
When measured at the test site, the interference voltage limit at the power supply terminal of Class B equipment is limited
dBuv
Group 1 and Group 2
Quasi-bee value
66~56
Linearly decreases with the logarithm of frequency
56
60
2 groups
binary value
56~--46
average value
120
115
105
Decreases linearly with the logarithm of frequency
46
50
For diagnostic X-ray generating devices, they work in an intermittent manner , the click limit value is the continuous interference peak limit value in Table 2a or Table 26 plus 20dB.
5.1.3 Household or commercial induction cookware
Opponent household or commercial induction cookware (Group 2 B US equipment), its limit value is table 2c table 2c
Induction cooker power supply Terminal interference voltage limit
rated section
MHz
0.009-0.050
0.050-~0.1485
0.1485-0.50
0.50~ s
5~30
quasi-peak
110
90~80
sensor limit, dBuy
average| |tt||Decreases linearly with the logarithm of frequency
66-56
Decreases linearly with the logarithm of frequency
56
60
Note: For systems with rated voltages of 100V/110V, interference voltage limits for power terminals are under consideration. 5.1. There is no limit for terminal disturbance voltage in frequency bands above 430MHz
above 30MHz. 300
56-46
Decreases linearly with the logarithm of frequency
46
50
5.2 Electromagnetic radiation disturbance limit
GB 4824 --2001
Measuring equipment and measurement methods are in accordance with Chapters 6, 7 and 8. When using measuring instruments with quasi-peak detectors, the equipment under test shall comply with this limit.
The limit value below 30MHz refers to the magnetic field component of electromagnetic radiation disturbance. The limit value in the 30MHz-1GHz frequency band refers to the electric field component of electromagnetic radiation disturbance. The limit value above 1GHz refers to the power of electromagnetic radiation interference. 5.2.19kH2-150k1z frequency band
The radiation interference limits in the 9k11z~150kHz frequency band are under consideration, except for induction cookers. 5.2.2150kH21GHz frequency band
Except for the assigned frequency range listed in Table 1 In addition, the electromagnetic radiation disturbance limits in the 150kHz~1GHz frequency band are specified as follows. Group 1 Class A and Class 3 equipment are specified in Table 3, Group 2 Class 1 equipment is specified in Table 4. Group 2 Class A equipment is specified in Table 5. For induction cookers belonging to Group 2 Category B, the limits are specified in Table 3a and Table 3b. The special provisions and limits for protecting special safety services are specified in 5.3 and Table 6 respectively. Under certain circumstances (see 7.1.3), Group 2 Class A equipment may be measured at a distance between 10m and 30m at the test site, and Group 1 or Group 2 Class B3 equipment may be measured at a distance between 3m and 10m. Measurement. In case of dispute, Group 2 Class A equipment shall be measured at a distance of 30m and Group 1 or Group 2 Class B equipment (as well as Group 1 Class A equipment) shall be measured at a distance of 10m. Table 31 Group Equipment Electromagnetic Radiation Disturbance Limits
Frequency Band
MHz
0. 15 ~~ 30
30-230
230-1000|| tt||Group A Class Equipment
Measuring distance 10m
dB(pV/m)
under consideration
10
47||tt ||At the test site
Group H equipment
Measurement distance 10m
dB(μV/m)
Under consideration
30|| tt | tt||Under examination
30
37
Note: Prepare a group of Class A and Class B equipment permanently installed in an X-ray shielding place for measurement at the test site. The electromagnetic radiation interference limit is allowed to be increased by 12dB.
Equipment that does not meet the limits in Table 3 should be marked with \Class A+12\ or "Class B+12\", and the installation instructions should have the following warning: "Warning: This equipment can only be installed in Provide at least 12dB of X-ray protection indoors against radio disturbances in the frequency range of 30MHz~1GHz. "Table 3a Limits of field induced current in a 2m loop antenna surrounding the device under test
MHz|| tt||0. 009- 0. 070
0.070--0.1485
0.1485~30
horizontal component
88
88-58|| tt||Decreases linearly with the logarithm of frequency
5822
Quasi-peak limit, dBμA
Vertical component
106
106~76|| tt||Linear decrease with the logarithm of frequency
76~40
Linear decrease with the logarithm of frequency
Linear decrease with the logarithm of frequency
Note, table The limit value of 3 is applicable to household induction tools with a diagonal size less than 1.6m. The measurement method is specified in 2.6.5 of GB/T6113.2. 3b magnetic field intensity limit value
section||tt| |MHz
0. 009 ~~ 0., 070
0. 070--0. 1-185
Quasi bee limit, tidal distance 3m||tt| |dB(μA/m)
69
69~39
decreases linearly with the logarithm of frequency
301
frequency band
MHz
0.1485~~4.0
4.0~~30
GB 4824—2001
Table 3b (End)
Push peak limit, measurement distance 3m
dB(μA/m)
39~3
Decreases linearly with the logarithm of frequency
3
Note: Limits in Table 3b Applicable to commercial induction cookers and household induction cookers with a diagonal size greater than 1.6m, measured at a distance of 3m according to the 0.6m loop antenna specified in GB/T6113.1 14.2.1. The antenna should be installed vertically, with the bottom of the loop antenna 1m above the ground. Table 4 When tested at the test site, the electromagnetic radiation disturbance limit frequency band of Group 2 Class B equipment
MHz
0.15~30
30~80.872
80. 872- -81. 848
81. 848~134. 786
134. 786-136. 414
136.414-230
2301000
frequency band|| tt||MHz
0.15~0.49
0.49~1.705
1.705~2.194
2. 194- 3. 95
3.95~20|| tt||20～30
30~47
47~~53.91
53.91～ 54. 56
54.56~68
6880.872||tt ||80.872~81.848
81.848~87
87134.786
134. 786~136. 414
136.411~156
302
Table 5
Electric field strength, measuring distance 10m
Push peak value dB (μV/m)
30||tt| |50
30
50
30
37
Limits of electromagnetic radiation disturbance for Group 2 Class A equipment
Magnetic field strength, measurement Distance 3m
Push peak value dB (μA/m)
39~~3
Decreases linearly with the logarithm of frequency
limit value, the measuring distance height is D| |tt||D refers to the distance from the exterior wall of the building
dB(μV/m)
75
65
70
50| |tt||40
48
30
30(40)\)
30
43
58||tt| |43
40
50
40
At the test site. Distance from the equipment under test D=10 mdB(μV/m)
95
85
90
85
70
60
68
50
50(60 )
50
63
78
63
60
70
60
band| |tt||MHz
156174
174 -188.7
188. 7-100. 979
190.979~~230
230-400|| tt||400470
470-1000
GB 4824--2001
Table 5 ()
limited body, measuring distance is D
D finger Distance from the exterior wall of the building
dB(μV/m)
54
30
40
30
40| |tt||43
10
At the test site, the distance from the equipment under test is D=10mdB (μV/m)bzxZ.net
74
50||tt ||60
50
63
60
1) According to the situation in our country, the limits in the 53.91~54.56MHz frequency band are respectively 30dB and 50dB. For the equipment under test, as long as the measurement distance D is within the perimeter of the jurisdiction, the measurement distance is calculated from the outer wall of the building where the equipment under test is installed, D = (30+α/α) m or D100m, whichever is smaller. When the calculated distance D exceeds the perimeter of the jurisdiction, then Dr or 30m, whichever is greater.
In calculating the above values:
r is the nearest distance in each direction of measurement between the wall of the building where the equipment under test is installed and the perimeter of the user area; 8-2.5 (frequency below 1 MHz) | 5.2.31GHz~18GHz frequency band
1 group of industrial, scientific and medical (ISM) equipment
The limit is under examination.
Note: Above 1 GHz, the radiated disturbance limits for Group 1 Industrial, Scientific and Medical (ISM) equipment are intended to be the same as those for the Information Technology Equipment (ITE) under consideration. Group 2 Industrial Scientific Medical (TSM) Equipment
Class A Equipment
The limits are under consideration.
Class B equipment
a) The limit value of industrial, scientific and medical (ISM) equipment operating below 400MHz is subject to examination.
Note: These limits are subject to the test conditions specified below. If within the 400MHz~1GHz frequency band, all emission values ??are limited. The highest frequency of the 5th harmonic generated inside the E source is lower than 1GHz (that is, the highest operating frequency of the source is <200MHz), so no test is required above 1GHz.
b) The electromagnetic radiation disturbance limits for industrial, scientific and medical (1SM) equipment working above 400MHz in the 1GHz to 18GHz frequency band are specified in Table 6-Table 8; industrial, scientific and medical equipment should meet Table 6 or Table 7 and Table 8 The limit value (see Figure 5)
Special provisions for protecting special security services are specified in 5.3 and Table 9. 303
31GHz~18GHz frequency band
1 group of industrial, scientific and medical (ISM) equipment
The limit value is under examination invitation.
Note: Above 1 GHz, the radiated disturbance limits for Group 1 Industrial, Scientific and Medical (ISM) equipment are intended to be the same as those for the Information Technology Equipment (ITE) under consideration. Group 2 Industrial Scientific Medical (TSM) Equipment
Class A Equipment
The limits are under consideration.
Class B equipment
a) The limit value of industrial, scientific and medical (ISM) equipment operating below 400MHz is subject to examination.
Note: These limits are subject to the test conditions specified below. If within the 400MHz~1GHz frequency band, all emission values ??are limited. The highest frequency of the 5th harmonic generated inside the E source is lower than 1GHz (that is, the highest operating frequency of the source is <200MHz), so no test is required above 1GHz.
b) The electromagnetic radiation disturbance limits for industrial, scientific and medical (1SM) equipment working above 400MHz in the 1GHz to 18GHz frequency band are specified in Table 6-Table 8; industrial, scientific and medical equipment should meet Table 6 or Table 7 and Table 8 The limit value (see Figure 5)
Special provisions for protecting special security services are specified in 5.3 and Table 9. 303
31GHz~18GHz frequency band
1 group of industrial, scientific and medical (ISM) equipment
The limit value is under examination invitation.
Note: Above 1 GHz, the radiated disturbance limits for Group 1 Industrial, Scientific and Medical (ISM) equipment are intended to be the same as those for the Information Technology Equipment (ITE) under consideration. Group 2 Industrial Scientific Medical (TSM) Equipment
Class A Equipment
The limits are under consideration.
Class B equipment
a) The limit value of industrial, scientific and medical (ISM) equipment operating below 400MHz is subject to examination.
Note: These limits are subject to the test conditions specified below. If within the 400MHz~1GHz frequency band, all emission values ??are limited. The highest frequency of the 5th harmonic generated inside the E source is lower than 1GHz (that is, the highest operating frequency of the source is <200MHz), so no test is required above 1GHz.
b) The electromagnetic radiation disturbance limits for industrial, scientific and medical (1SM) equipment working above 400MHz in the 1GHz to 18GHz frequency band are specified in Table 6-Table 8; industrial, scientific and medical equipment should meet Table 6 or Table 7 and Table 8 The limit value (see Figure 5)
Special provisions for protecting special security services are specified in 5.3 and Table 9. 303
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