CISPR 36:2020/AMD1:2023

CISPR 36
®

Edition 1.0 2023-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INT ERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
C OMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

AMENDMENT 1
AMENDEMENT 1

Electric and hybrid electric road vehicles – Radio disturbance characteristics –
Limits and methods of measurement for the protection of off-board receivers
below 30 MHz

Véhicules routiers électriques et hybrides électriques – Caractéristiques de
perturbations radioélectriques – Limites et méthodes de mesure pour la
protection des récepteurs extérieurs en dessous de 30 MHz

CISPR 36:2020-07/AMD1:2023-05(en-fr)

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CISPR 36

®


Edition 1.0 2023-05




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE




INT ERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

C OMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES



AMENDMENT 1

AMENDEMENT 1




Electric and hybrid electric road vehicles – Radio disturbance characteristics –

Limits and methods of measurement for the protection of off-board receivers

below 30 MHz



Véhicules routiers électriques et hybrides électriques – Caractéristiques de


perturbations radioélectriques – Limites et méthodes de mesure pour la

protection des récepteurs extérieurs en dessous de 30 MHz










INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.100.10; 33.100.20 ISBN 978-2-8322-7018-9



Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – CISPR 36:2020/AMD1:2023
© IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
____________

ELECTRIC AND HYBRID ELECTRIC ROAD VEHICLES –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT FOR
THE PROTECTION OF OFF-BOARD RECEIVERS BELOW 30 MHz


AMENDMENT 1

FOREWORD
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Amendment 1 to CISPR 36:2020 has been prepared by CISPR subcommittee D:
Electromagnetic disturbances related to electric/electronic equipment on vehicles and internal
combustion engine powered devices.

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CISPR 36:2020/AMD1:2023 – 3 –
© IEC 2023
The text of this Amendment is based on the following documents:
Draft Report on voting
CIS/D/483/CDV CIS/D/490A/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
___________
INTRODUCTION
Delete the existing second paragraph.
1 Scope
Replace the existing second and third paragraphs with the following:
This document applies to the emission of electromagnetic energy which might cause
interference to radio reception and which is emitted from electric and hybrid electric vehicles
(see 3.2 and 3.3) propelled by an electric motor supplied with electric energy by internal
rechargeable energy storage system (with voltages above 60 V) when operated on the road.
Replace the existing seventh paragraph with the following:
The radiated emission requirements in this document are not intended to be applicable to the
intentional transmissions from a radio transmitter as defined by the ITU-R, including their
spurious emissions.

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– 4 – CISPR 36:2020/AMD1:2023
© IEC 2023
3 Terms and definitions
3.2
electric vehicle
Replace the existing definition and the existing note to entry with the following new definition
and new note to entry:
vehicle propelled exclusively by electric motor(s) powered by on-board REESS
Note 1 to entry: Vehicles equipped with an additional power source (e.g. auxiliary combustion engine, fuel cell)
used to provide electric power to the electric motor/REESS only, without contributing to the mechanical propulsion
of the vehicle, are considered electric vehicles for the purposes of this document.

3.7
traction battery
Replace the existing term and the existing definition with the following new term, new definition
and new note to entry:
3.7
rechargeable energy storage system
REESS
storage system that provides electric energy for electric propulsion, which can be recharged
Note 1 to entry: Components of the REESS can be high voltage (HV) batteries.

Add, after the existing definition of 3.8, the following new term, definition and note to entry:
3.9
high voltage
HV
operating voltage above 60 V
Note 1 to entry: The term high voltage can be defined with a different voltage range in other standards.

4.1 Determination of conformance of vehicle with limits
Replace the existing first paragraph with the following new paragraph:
The vehicle shall comply with the quasi-peak detector magnetic field strength limits specified in
4.2, when operated as per 5.4.2.2.

Add, after the second paragraph, the following new paragraph and new Figure 6:
If an initial peak detector prescan is performed (i.e., before any quasi peak detector
measurements), then the compliance shall be determined based on the flowchart in Figure 6.

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CISPR 36:2020/AMD1:2023 – 5 –
© IEC 2023

a Because the measurement result with peak detector is always higher than or equal to the measurement result
with quasi-peak detector, this single detector measurement can lead to a simplified and quicker conformance
process.
b This flow-chart is applicable for each individual frequency, i.e. only the emissions that are above the limit when
measured with peak detector need to be remeasured with quasi-peak detector.
Figure 6 – Determination of conformance when using a peak detector prescan

Table 2 – Spectrum analyser parameters
Replace the existing table with the following new table:
Table 2 – Spectrum analyser parameters
Quasi-peak detector Peak detector
Frequency
range
Minimum Minimum
RBW at −6 dB RBW at −6 dB
MHz
scan time scan time
0,15 to 30 9 kHz 200 s/MHz 9 kHz 10 s/MHz

5.1.1.3 Scanning receiver parameters
Replace the existing first paragraph with the following:
The measurement time of the scanning receiver shall be adjusted for the CISPR frequency band
and detection mode used. The bandwidth (BW), minimum measurement time and maximum
step size are listed in Table 3.

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– 6 – CISPR 36:2020/AMD1:2023
© IEC 2023
Table 3 – Scanning receiver parameters
Replace the existing table with the following new table:
Table 3 – Scanning receiver parameters
Quasi-peak detector Peak detector
Frequency
range
BW at Maximum Minimum BW at Maximum Minimum
MHz
−6 dB step size measurement time −6 dB step size measurement time
0,15 to 30 9 kHz 5 kHz 1 s 9 kHz 5 kHz 50 ms
NOTE The minimum dwell time for FFT based measurements should be 1 s. For further guidance on FFT-based
measurement settings, see CISPR 16-2-3.

5.2.2.2 Ambient magnetic field requirements
Replace the existing text with the following new text:
The ambient noise level shall be at least 6 dB below the limits of disturbance given in Clause 4
or, otherwise, the combination of emissions from the vehicle (while operating as specified in
this document) and ambient noise shall comply with those limits. The ambient level shall be
verified periodically or when test results indicate the possibility of non-compliance.

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CISPR 36:2020/AMD1:2023 – 7 –
© IEC 2023
Annex A
(normative)

Measurement instrumentation uncertainty
Replace, in the title of this annex, “(normative)” with “(informative)”.

A.1 Overview
Add, at the end of the existing third paragraph, the following third bullet:
• loop antenna factor variations due to antenna imperfections are under study.

A.2 Radiated disturbance measurements at an OTS or in an ALSE in the
frequency range 150 kHz to 30 MHz
Replace the title of this clause with the following:
A.2 Radiated disturbance measurements in the frequency range 150 kHz to
30 MHz

Figure A.1 – Sources of measurement instrumentation uncertainty
Replace the existing title of the figure with the following:
Figure A.1 – Sources of measurement instrumentation uncertainty (e.g., for ALSE)

Table A.1 – Input quantities to be considered for radiated disturbance measurements
Replace, in the table row for L , the text in the last table column with the following:
CAB
The cable(s) loss(es) values with associated expanded uncertainty and coverage factor are normally available from
calibration reports.
The expanded uncertainty value and the corresponding probability distribution, as specified in the calibration
report, shall be included here. In case the cable loss value is not corrected for during the measurement, another
contributor shall be included, with a value between zero and the highest cable loss value within 150 kHz to
30 MHz, combined with a rectangular probability distribution.

Replace the existing footnote to table (2) with the following:
Single parameter for cable loss value (and bulkhead connector loss value), which includes all the different cables
(and bulkhead connector) in the measuring system. If cable losses (including from the bulkhead connector) are
measured separately, the table shall include one separate line for cable loss value per each cable (and for the
bulkhead connector).

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– 8 – CISPR 36:2020/AMD1:2023
© IEC 2023
Replace the existing footnote to table (3) with the following:
Single parameter for cable loss frequency interpolation, which includes all the different cables in the measuring
system. If cable losses (including from the bulkhead connector) are measured separately, the table shall include
one separate line for cable loss interpolation error contributor per each cable (and for the bulkhead connector).

Replace the existing footnote to table (4) with the following:
The worst configuration (in ALSE with one mismatch between receiver and chamber bulkhead connector and one
mismatch between chamber bulkhead connector and antenna) has been considered for the mismatch uncertainty
contributor. When the measurements are performed without feedthrough (e.g., in OTS or OATS), only one
mismatch (between receiver and antenna) needs to be considered.

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CISPR 36:2020/AMD1:2023 – 9 –
© IEC 2023
Annex B
(informative)

Uncertainty budgets for radiated disturbance
measurements of magnetic field strength
B.2 Typical CISPR 36 uncertainty budgets
Replace the existing first paragraph with the following:
Uncertainties related to site imperfections are not considered in these budgets.

Table B.1 – Typical uncertainty budget – 3 m distance – loop antenna
Replace the existing table with the following new table:

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– 10 – CISPR 36:2020/AMD1:2023
© IEC 2023
Table B.1 – Typical uncertainty budget – 3 m distance – loop antenna (e.g. for ALSE)
3 m distance measurement – loop antenna
Uncertainty of x
i
Quantity x c u(x )
Symbol Probability Comment
i i i
dB distribution
function
(1)
V
Receiver reading ± 0,1 k = 1 0,1
R
Receiver corrections –
(1)
δV
k = 2 0,5
± 1
sw
Sine wave voltage
Receiver correction –
(1)
δV
Pulse amplitude ± 1,5 Rectangular 0,87
pa
response
Receiver correction –
(1)
δV
Pulse repetition rate ± 1,5 Rectangular 0,87
pr
response
+0,5
Receiver correction –
(1)
δV
Rectangular 0,69
See
nf
−1,9
Noise floor proximity
+0
Receiver correction –
(2)
δF
Rectangular 0,55
See and B.3
stp
−1,9
Frequency step
(3)
L
Cable(s) loss(es) ± 0,5 k = 2 0,25 See
CAB
Cable(s) loss(es)
(3)
δL
frequency ± 0,25 Rectangular 0,14
See
FI
interpolation
+0,34
Bulkhead connector /
(4) (6)
M
U-shaped 0,25 See
FR
−0,36
receiver mismatch
+1,54
Antenna / bulkhead
(5) (6)
M
U-shaped 1,21 See
AF
−1,87
connector mismatch
From the calibration
F
Antenna factor ± 1 k = 2 0,5
a
certificate
AF frequency
δF
± 1 Rectangular 0,58
a,f
interpolation
Expanded uncertainty (in dB):
 4,35
U(H) = 2u (H)
c
(1)
Based on CISPR 16-4-2.
(2) This error is negligible when performing final measurements at individual frequencies determined in
automatic or manual fine tuning, or when using a spectrum analyser because the spectrum analyser

continuously sweeps through all frequencies.
(3)
It is assumed that all cables in the measurement chain, between the antenna and the receiver, as well as
the bulkhead connector, were calibrated together as one 2-port passive device. In case this is not true and
the cables and bulkhead connector were calibrated individually, each shall have its own separate contributor
(table row) in the measurement uncertainty budget.
(4)
Based on:
– bulkhead connector maximum reflection coefficient of 0,2;
– receiver input maximum reflection coefficient of 0,2;
– cable is assumed to have no loss (|S |=|S | = 1) and be perfectly matched (|S | = |S | = 0).
21 12 11 22
(5)
Based on:
– bulkhead connector maximum reflection coefficient of 0,2;
– antenna maximum reflection coefficient of 0,97;
– cable is assumed to have no loss (|S |=|S | = 1) and be perfectly matched (|S | = |S | = 0).
21 12 11 22
(6)
The worst configuration (in ALSE with one mismatch between receiver and chamber bulkhead connector
and one mismatch between chamber bulkhead connector and antenna) has been considered for
mismatches. When the measurements are performed without feedthrough (e.g. in OTS or OATS), only one
mismatch (between receiver and antenna) needs to be considered.

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CISPR 36:2020/AMD1:2023 – 11 –
© IEC 2023
B.3 Receiver’s frequency step
Replace the entire content of this clause, including Figure B.1, with the following new text and
figure:
The uncertainty contribution due to the receiver’s frequency step shall be evaluated as
described in this subclause.
A signal generator shall be connected to the receiver’s input and it shall be configured to
generate a continuous wave signal at some frequency f within 150 kHz to 30 MHz, for example
0
at f = 10 MHz. The level of the signal generator shall be at least 10 dB above the receiver’s
0
noise floor, but within the level range where the receiver operates linearly (its input mixer is not
saturated).
Tune the receiver on the signal generator’s frequency and record the measured level, V .
0
Re-tune the receiver in turn at f ± (Δf)/2 and record the measured levels, V and V , without
0 - +
changing anything on the signal generator; where Δf is the greatest value of the frequency step
size used during measurements on vehicles, for example Δf = 5 kHz, which is the maximum
step size allowed (see Table 3).
Calculate V ‒ V and V ‒ V , in dB, with all measured levels expressed in logarithmic units
- 0 + 0
(e.g. dB(μV)); the result with the greatest absolute value is taken as the negative value of the
receiver’s frequency step uncertainty contributor, while the positive value of this contributor is
0 dB. A rectangular probability distribution is assumed.
The measurement of the error due to the receiver’s frequency step is illustrated in Figure B.1.
The value reflected in Table B.1 assumes that the difference with the greatest absolute value,
between V – V and V – V , as obtained from the measurements, was of ‒1,87 dB.
- 0 + 0

Figure B.1 – Example of measurement for frequency step uncertainty evaluation

___________

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– 12 – CISPR 36:2020/AMD1:2023
© IEC 2023
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
____________

VÉHICULES ROUTIERS ÉLECTRIQUES ET HYBRIDES ÉLECTRIQUES –
CARACTÉRISTIQUES DE PERTURBATIONS RADIOÉLECTRIQUES –
LIMITES ET MÉTHODES DE MESURE POUR LA PROTECTION DES
RÉCEPTEURS EXTÉRIEURS EN DESSOUS DE 30 MHz


AMENDEMENT 1

AVANT-PROPOS
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L’Amendement 1 à la CISPR 36:2020 a été établi par le sous-comité D du CISPR: Perturbations
électromagnétiques relatives aux appareils électriques
...