Iec cispr 25 2016

®

INTERNATIONAL
STANDARD
NORME
INTERNATIONALE

CISPR 25
Edition 4.0 201 6-1 0

INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

Vehicles, boats and internal combustion engines – Radio disturbance
characteristics – Limits and methods of measurement for the protection of
on-board receivers

CISPR 25:201 6-1 0(en-fr)

Véhicules, bateaux et moteurs à combustion interne – Caractéristiques des
perturbations radioélectriques – Limites et méthodes de mesure pour la
protection des récepteurs embarqués

colour
i n si de


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®

CISPR 25
Edition 4.0 201 6-1 0

INTERNATIONAL
STANDARD
NORME
INTERNATIONALE

colour
i n si de

INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

Vehicles, boats and internal combustion engines – Radio disturbance
characteristics – Limits and methods of measurement for the protection of
on-board receivers
Véhicules, bateaux et moteurs à combustion interne – Caractéristiques des
perturbations radioélectriques – Limites et méthodes de mesure pour la
protection des récepteurs embarqués

INTERNATIONAL
ELECTROTECHNICAL

COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.1 00.1 0, 33.1 00.20

ISBN 978-2-8322-3726-7

Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale


–2–

CI SPR 25:201 6 © I EC 201 6

CONTENTS
FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
I NTRODUCTI ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0
1
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1
2
N orm ati ve references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2
3
Term s and defi n i ti ons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3
4
Requ irem en ts com m on to vehicl e and com pon ent/m odu l e em issions
m easurem ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7

4. 1
General test requi rem en ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7
4. 1 . 1
Categ ories of disturbance sources (as appl ied in the test plan) . . . . . . . . . . . . . . . . . . . . . . 1 7
4. 1 . 2
Test pl an . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7
4. 1 . 3
Determ ination of conform ance of equ ipm ent u n der test (EU T) with lim its . . . . . . . 1 7
4. 1 . 4
Operatin g con ditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8
4. 1 . 5
Test report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9
4. 2
Shi el ded enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9
4. 3
Absorber-l in ed sh iel ded enclosu re (ALSE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9
4. 3. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9
4. 3. 2
Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9
4. 3. 3
Obj ects i n ALSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9
4. 3. 4
ALSE perform ance val idati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4. 4
Measu rin g instrum ent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4. 4. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4. 4. 2
Spectru m an al yser param eters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4. 4. 3
Scan n i ng recei ver param eters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4. 5
Power su ppl y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5
Measu rem ent of em issions recei ved by an antenn a on th e sam e veh icl e . . . . . . . . . . . . . . . . . . . . . . . 26
5. 1
Anten n a m easuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5. 1 . 1
Type of an ten na . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5. 1 . 2
Measurin g system requ irem ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5. 2
Method of m easurem ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5. 3
Test setup for veh icle in charg i ng m ode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5. 3. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5. 3. 2
AC power charg ing wi th out com m unicati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5. 3. 3
AC or DC power charg i n g with com m un ication l i n e(s) or with sig n al
lin e(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5. 4
Exam ples of lim i ts for veh icl e radi ated disturbances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6
Measu rem ent of com pon en ts and m odu les . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6. 2

Test equ ipm ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6. 2. 1
Reference grou nd plan e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6. 2. 2
Power su ppl y an d AN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6. 2. 3
Load sim u lator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6. 3
Con ducted em issions from com ponen ts/m odu les – Voltag e m eth od . . . . . . . . . . . . . . . . . . . . . . 41
6. 3. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6. 3. 2
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6. 3. 3
Test procedu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42


CI SPR 25:201 6 © I EC 201 6
6. 3. 4

–3–

Lim its for con ducted disturbances from com pon en ts/m odu les – Vol tag e
m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6. 4
Con ducted em issions from com ponen ts/m odu les – Current probe m ethod . . . . . . . . . . . . 49
6. 4. 1
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6. 4. 2
Test procedu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6. 4. 3
Lim its for con ducted disturbances from com pon en ts/m odu les – Current
probe m eth od . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6. 5
Radiated em issi ons from com pon ents/m odul es – ALSE m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6. 5. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6. 5. 2
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6. 5. 3
Test procedu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6. 5. 4
Lim its for radi ated disturbances from com pon ents/m odu les – ALSE
m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
6. 6
Radiated em issi ons from com pon ents/m odul es – TEM cel l m ethod . . . . . . . . . . . . . . . . . . . . . . . 65
6. 7
Radiated em issi ons from com pon ents/m odul es – Striplin e m eth od . . . . . . . . . . . . . . . . . . . . . . . . 65
Ann ex A (inform ati ve) Fl ow ch art for checki ng th e appl icabil i ty of CI SPR 25 . . . . . . . . . . . . . . . . . . . . . . . . 66
Ann ex B (norm ative) Anten n a m atch in g u n it – Veh icl e test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
B. 1
Anten n a m atch in g u n it param eters (1 50 kH z to 6, 2 MH z) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
B. 2
Anten n a m atch in g u n it – Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
B. 2. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
B. 2. 2
Gain m easurem ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
B. 2. 3
Test procedu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

B. 3
I m pedance m easurem ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Ann ex C (inform ative) Sheath-current su ppressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
C. 1
General i nform ati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
C. 2
Suppressor constructi on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Ann ex D (inform ative) G u idance for the determ i n ati on of the noise floor of acti ve
veh icl e anten n as in th e AM and FM rang e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Ann ex E (norm ati ve) Artifici al n etworks (AN) , artifi ci al m ai ns n etworks (AM N ) an d
asym m etric artifici al networks (AAN ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
E. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
E. 2
Artificial n etworks (AN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
E. 2. 1
Com pon en t powered by LV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
E. 2. 2
Com pon en t powered by HV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
E. 2. 3
Com pon en t i n vol ved in charg ing m ode con n ected to DC power m ains . . . . . . . . . . . 77
E. 2. 4
Veh icl e i n ch arg i n g m ode con nected to DC power m ains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
E. 3
Artificial m ains networks (AMN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
E. 3. 1
Com pon en t AM N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
E. 3. 2
Veh icl e i n ch arg i n g m ode con nected to AC power m ains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
E. 4

Asym m etric artificial n etwork (AAN ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
E. 4. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
E. 4. 2
Sym m etric com m unicati on l ines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
E. 4. 3
PLC on power l i n es. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
E. 4. 4
PLC (techn olog y) on control pil ot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Ann ex F (i nform ati ve) Radi ated em issi ons from com pon ents/m odul es – TEM cel l
m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
F. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
F. 2
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
F. 2. 1
Setu p wi th m ajor fiel d em ission from th e wi rin g h arness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83


–4–

CI SPR 25:201 6 © I EC 201 6

F. 2. 2
Setu p wi th m ajor fiel d em issions from th e EUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
F. 2. 3
Power su ppl y an d AN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
F. 2. 4
Sig n al/control lin e fi lters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
F. 3

Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
F. 4
Lim its for radi ated disturbances from com pon ents/m odu l es – TEM cel l
m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
F. 5
TEM cell desig n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Ann ex G (inform ative) Radi ated em issions from com pon ents/m odul es – Stri pl i n e
m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
G. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
G. 2
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
G. 2. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
G. 2. 2
Stri pl in e im pedance m atch in g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
G. 2. 3
Location of th e EUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
G. 2. 4
Location and len gth of th e test h arn ess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
G. 2. 5
Location of th e l oad sim u l ator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
G. 3
Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
G. 4
Lim its for radi ated em issi ons from com pon en ts/m odu l es – Stri pl i n e m ethod . . . . . . . . . . 93
G. 5
Striplin e desig n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Ann ex H (inform ative) I n terference to m obile radio com m un ication in the presence of
im pu lsi ve noise – M eth ods of j udg ing degradati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

H. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
H. 2
Survey of m eth ods of ju dg in g deg radati on to radio ch ann el . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
H . 2. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
H . 2. 2
Subj ecti ve tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
H . 2. 3
Obj ecti ve tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 00
H . 2. 4
Conclusi ons relatin g to j u dg em en t of degradati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 01
Ann ex I (n orm ati ve) Test m eth ods for sh i elded power su ppl y system s for h i gh vol tag es
in electric and h ybri d veh icles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 02
I.1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 02
I.2
Con ducted em ission from com pon en ts/m odu l es on H V power l i n es – Voltag e
m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 02
I . 2. 1
Groun d pl an e arrang em ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 02
I . 2. 2
Test set-u p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 03
I . 2. 3
Lim its for con du cted em issi on – Voltag e m eth od. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 08
I.3
Con ducted em ission from com pon en ts/m odu l es on H V power l i n es – cu rren t
probe m eth od . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 0
I . 3. 1
Reference g rou nd plan e arran g em ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 0

I . 3. 2
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 0
I . 3. 3
Lim its for con ducted em issi on – curren t probe m eth od. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 5
I.4
Radiated em issi ons from com pon ents/m odul es – ALSE m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 5
I . 4. 1
Reference g rou nd plan e arran g em ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 5
I . 4. 2
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 5
I . 4. 3
Lim its for radi ated em issi ons – ALSE m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 20
I.5
Cou pli n g between H V an d LV system s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 20
I . 5. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 20
I . 5. 2
Measurem ent based on test setu ps defi n ed in Cl ause 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 20
I . 5. 3
Measurem ent of th e H V-LV cou pl i ng attenu ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 26
Ann ex J (inform ative) ALSE perform ance validati on 1 50 kH z to 1 GH z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 29
J.1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 29


CI SPR 25:201 6 © I EC 201 6

–5–

J.2

Reference m easu rem ent m ethod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 31
J . 2. 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 31
J . 2. 2
Equ i pm ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 31
J . 2. 3
Procedu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 33
J . 2. 4
Requirem en ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 37
J.3
Modelled l ong wire anten na m eth od . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 37
J . 3. 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 37
J . 3. 2
Equ i pm ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 38
J . 3. 3
Procedu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 40
J . 3. 4
Requirem en ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 49
Ann ex K (inform ati ve) I tem s un der consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 51
K. 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 51
K. 2
Measu rem ent techn i qu es an d l im its . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 51
K. 3
Measu rem ent u ncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 51
K. 4
Reconsiderati on of the Scope of th e stan dard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 51
K. 5
Dig ital Service ban ds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 51

K. 6
Reorgan izin g the docum en t i nto separate parts si m ilar to CI SPR-1 6
docum en t series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 51
Bibl i ograph y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 52
Fig u re 1 – Method of determ in ati on of conform ance for al l frequ ency ban ds . . . . . . . . . . . . . . . . . . . . . . . . . 1 8
Fig u re 2 – Exam pl e of g ai n cu rve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Fig u re 3 – Veh icle-radiated em issi ons – Exam pl e for test layou t (en d vi ew with
m onopol e anten n a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Fig u re 4 – Exam pl e of test setu p for veh icle wi th plu g l ocated on veh icl e si de (AC
powered with ou t com m u nication) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Fig u re 5 – Exam pl e of test setu p for veh icle wi th plu g l ocated front / rear of veh icl e (AC
powered with ou t com m u nication) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Fig u re 6 – Exam pl e of test setu p for veh icle wi th plu g l ocated on veh icl e si de (AC or
DC powered with com m un ication) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fig u re 7 – Exam pl e of test setu p for veh icle wi th plu g l ocated front /rear of veh icle (AC
or DC powered wi th com m unicati on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Fig u re 8 – Averag e l im it for radiated distu rbance from veh icl es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Fig u re 9 – Con ducted em issions – Exam ple of test setu p for EUT with power return
lin e rem otel y grou n ded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Fig u re 1 0 – Conducted em issions – Exam ple of test setu p for EU T wi th power return
lin e l ocall y g rou nded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Fig u re 1 1 – Conducted em issions – Exam ple of test setu p for altern ators and
gen erators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Fig u re 1 2 – Conducted em issions – Exam ple of test setu p for ig n ition system
com pon ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Fig u re 1 3 – Conducted em issions – Exam ple of test setu p for curren t probe
m easurem ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fig u re 1 4 – Test h arness bendi ng requ irem ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Fig u re 1 5 – Exam ple of test setup – Rod anten n a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Fig u re 1 6 – Exam ple of test setup – Bicon ical an ten n a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Fig u re 1 7 – Exam ple of test setup – Log-periodi c an ten n a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Fig u re 1 8 – Exam ple of test setup – Above 1 G H z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Fig u re 1 9 – Exam ple of averag e lim it for radiated disturbances from com ponen ts . . . . . . . . . . . . . . . . . 64


–6–

CI SPR 25:201 6 © I EC 201 6

Fi gu re A. 1 – Flow ch art for ch eckin g th e applicabil ity of th is stan dard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Fig u re B. 1 – Verification setu p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Fig u re C. 1 – Ch aracteristic S 21 of th e ferrite core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Fig u re D. 1 – Veh icle test setu p for equ ipm en t n oise m easu rem ent in th e AM/FM ran g e . . . . . . . . 71
Fig u re D. 2 – Veh icle test setu p for an ten na noise m easurem ent in th e AM/FM ran g e . . . . . . . . . . . . 72

Fig u re E. 1 – Exam pl e of 5 µ H AN sch em atic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Fig u re E. 2 – Characteristics of th e AN im pedance ZPB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Fig u re E. 3 – Exam ple of 5 µ H H V AN sch em atic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Fig u re E. 4 – Exam pl e of 5 µ H H V AN com bi n ati on in a sin g le shi el ded box . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Fig u re E. 5 – I m pedance m atchi n g n etwork attach ed between H V AN s an d EU T . . . . . . . . . . . . . . . . . . . 77
Fig u re E. 6 – Exam pl e of an AAN for sym m etric com m unication l i n es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Fig u re E. 7 – Exam pl e of AAN circu it of PLC on AC or DC powerl i nes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Fig u re E. 8 – Exam pl e of an AAN circu i t for PLC on pi lot l ine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Fig u re F. 1 – TEM cel l (exam pl e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Fig u re F. 2 – Exam ple of arran g em ent of l eads in the TEM cel l an d to th e con n ector
pan el . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Fig u re F. 3 – Exam ple of the arran gem ent of th e conn ectors, th e l ead fram e an d the
dielectric su pport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Fig u re F. 4 – Exam ple for the requ ired m in im u m atten uation of th e si g nal / con trol l in e

fil ters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Fig u re F. 5 – Setup for m easurem ent of the fi l ter atten u ati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Fig u re F. 6 – Exam ple of the TEM cell m ethod test setu p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Fig u re F. 7 – TEM cel l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Fig u re G. 1 – Exam ple of a basic stri pl in e test setu p i n a sh i el ded encl osure . . . . . . . . . . . . . . . . . . . . . . . . . 93
Fig u re G. 2 – Exam ple for a 50 Ω stripl in e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Fig u re G. 3 – Exam ple for a 90 Ω stripl in e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Fig u re I . 1 – Con ducted em ission – Exam ple of test setu p for EU Ts with shi elded power
suppl y system s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 05
Fig u re I . 2 – Con ducted em ission – Exam ple of test setu p for EU Ts with shi elded
power su ppl y system s with el ectric m otor attach ed to th e bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 06
Fig u re I . 3 – Con ducted em ission – Exam ple of test setu p for EU Ts with shi elded power
suppl y system s an d i n verter/ch arg er device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 07
Fig u re I . 4 – Con ducted em ission – Exam ple of test setu p curren t probe m easurem en t
on H V li n es for EU Ts with sh ielded power suppl y system s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 2
Fig u re I . 5 – Con ducted em ission – Exam pl e of test setu p cu rren t probe m easurem en t
on H V li n es for EUTs with sh iel ded power suppl y system s with el ectric m otor attach ed
to th e bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 3
Fig u re I . 6 – Con ducted em ission – Exam pl e of test setu p cu rren t probe m easurem en t
on H V li n es for EUTs with sh iel ded power suppl y system s and in verter/charger device . . . . . . . 1 1 4
Fig u re I . 7 – Radiated em i ssion – Exam ple of test setu p m easurem ent wi th bicon ical
an ten n a for EU Ts with sh i el ded power suppl y system s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 7
Fig u re I . 8 – Radiated em i ssion – Exam ple of test setu p m easurem ent wi th bicon ical
an ten n a for EU Ts wi th sh ielded power suppl y system s with el ectric m otor attach ed to
th e bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 8
Fig u re I . 9 – Radiated em i ssion – Exam ple of test setu p m easurem ent wi th bicon ical
an ten n a for EU Ts wi th sh i el ded power suppl y system s an d in verter/ch arg er device . . . . . . . . . . . . 1 1 9
Fig u re I . 1 0 – Test setu p for cal ibrati on of th e test si gn al . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 21

CI SPR 25:201 6 © I EC 201 6

–7–

Fi gu re I . 1 1 – Exam ple of test setu p for con ducted em issions – Voltag e m ethod –
Measu rem ent on LV ports with i nj ecti on on H V su ppl y ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 22
Fig u re I . 1 2 – Exam ple of test setu p for con ducted em issi ons – Current probe m ethod –
Measurem ent on LV ports with inj ection on H V su ppl y ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 23
Fig u re I . 1 3 – Exam ple of test setu p for radiated em issions – ALSE m eth od –
Measu rem ent wi th biconi cal an ten n a wi th i nj ection on H V su ppl y ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 25
Fig u re I . 1 4 – Test setu p for EUT S21 m easurem en ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 27
Fig u re I . 1 5 – Exam ples of requ irem ents for cou pli ng atten uation, a c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 28
Fig u re J . 1 – Exam pl es of typical ALSE i nfl u ence param eters over the 1 0 M H z to 1 00
MH z frequ ency rang e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 30
Fig u re J . 2 – Visu al represen tation of ALSE perform ance val idation process . . . . . . . . . . . . . . . . . . . . . . . . 1 31
Fig u re J . 3 – Exam pl e of constructi on of a transm ittin g m on opol e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 32
Fig u re J . 4 – Side vi ew of th e antenn a confi gu ration for reference m easurem ent bel ow
30 MH z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 34
Fig u re J . 5 – Top view of an ten n a config urati on for reference m easurem ent 30 MH z an d
above (wi th th e biconical an ten n a shown as exam ple) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 35
Fig u re J . 6 – Side vi ew of an ten n a config u ration for reference m easu rem ent 30 MH z
an d above (with th e bicon ical antenn a sh own as exam pl e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 35
Fig u re J . 7 – Top view of an ten n a config urati on for the ALSE m easurem ent below
30 MH z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 36
Fig u re J . 8 – M etal lic sh eet an g les used as su pport for th e rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 39
Fig u re J . 9 – Radi ator side vi ew 50 Ω term in ati ons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 39
Fig u re J . 1 0 – Ph oto of th e radiator m ou nted on th e grou n d reference pl ane . . . . . . . . . . . . . . . . . . . . . . . . 1 39
Fig u re J . 1 1 – Exam ple VSWR m easured from fou r radiation sources (wi th out 1 0 dB
atten uator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 40
Fig u re J . 1 2 – Exam pl e setu p for ALSE equ i valent fi el d stren g th m easurem en t (rod

an ten n a shown for th e frequ ency ran g e bel ow 30 MH z) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 42
Fig u re J . 1 3 – M oM-m odel l for th e frequ ency ran g e 30 M H z to 200 M H z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 44

Tabl e
Tabl e
Tabl e
Tabl e
Tabl e
Tabl e
Tabl e
Tabl e

1 –
2–
3–
4–
5–
6–
7–
E. 1

Spectru m an al yser param eters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Scan n in g recei ver param eters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Anten n a types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Exam pl e for li m its of disturbance – Com plete veh icle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Exam pl es of lim its for condu cted disturbances – Voltag e m eth od . . . . . . . . . . . . . . . . . . . . . . . . . 48
Exam pl es of lim its for condu cted disturbances – Curren t probe m ethod . . . . . . . . . . . . . . . . 53
Exam pl es of lim its for radiated disturbances – ALSE m ethod. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
– M ag n i tu de of the AN im pedance ZPB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Tabl e F. 1 – Exam ples of lim its for radiated disturbances – TEM cell m ethod . . . . . . . . . . . . . . . . . . . . . . . . . 88
Tabl e F. 2 – Dim ensi ons for TEM cel ls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Tabl e G. 1 – Exam pl es of l im its for radi ated distu rbances – Stripl i ne m eth od . . . . . . . . . . . . . . . . . . . . . . . . 95
Tabl e I . 1 – Exam pl e for H V l im its for con ducted voltag e m easurem en ts at sh iel ded
power su ppl y devices (H V-LV decou pl i n g cl ass A5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 09
Tabl e I . 2 – Exam pl e of config urati ons for equ ipm en t wi th ou t n eg ati ve LV li ne . . . . . . . . . . . . . . . . . . . . . 1 27
Tabl e I . 3 – Exam pl e of config urati ons for equ ipm en t wi th n eg ati ve LV li n e . . . . . . . . . . . . . . . . . . . . . . . . . . 1 27
Tabl e I . 4 – Exam pl es of requ irem ents for m in im um cou pl i n g atten u ation , a c . . . . . . . . . . . . . . . . . . . . . . . 1 28
Tabl e J . 1 – Reference data to be u sed for ch am ber val i dation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 45


–8–

CI SPR 25:201 6 © I EC 201 6

I NTERNATI ON AL ELECTROTECH NI CAL COMMI SSI ON
I N TERN ATI ONAL SPECI AL COMM I TTEE ON RADI O I N TERFEREN CE
____________

VEHICLES, BOATS AND INTERNAL COMBUSTION ENGINES –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT FOR
THE PROTECTION OF ON-BOARD RECEIVERS
FOREWORD
1 ) Th e I n ternati on al El ectrotechn i cal Com m i ssi on (I EC) i s a worl d wi d e org ani zati on for stan dardi zati on com pri si n g
al l n ati on al el ectrotech ni cal com m i ttees (I EC N ati onal Com m i ttees) . The obj ect of I EC i s to prom ote
i n ternati on al co-operati on on al l q uesti on s concern i n g stand ardi zati on i n th e el ectri cal an d el ectroni c fi el ds. To
thi s en d and i n addi ti on to other acti vi ti es, I EC pu bl i sh es I n ternati on al Stan dards, Tech n i cal Speci fi cati on s,
Tech ni cal Reports, Pu bl i cl y Avai l abl e Speci fi cati ons (PAS) an d Gu i des (h ereafter referred to as “I EC
Publ i cati on (s) ”) . Th ei r preparati on i s entru sted to tech n i cal com m i ttees; any I EC N ati on al Com m i ttee i nterested

i n th e su bj ect deal t wi th m ay parti ci pate i n th i s preparatory work. I nternati on al , g overn m ental an d n on g overn m en tal org an i zati ons l i ai si ng wi th th e I EC al so parti ci pate i n th i s preparati on . I EC col l aborates cl osel y
wi th the I ntern ati on al Org ani zati on for Stand ardi zati on (I SO) i n accordance wi th con di ti ons determ i ned by
ag reem en t between th e two org an i zati on s.
2) Th e form al deci si ons or ag reem en ts of I EC on tech n i cal m atters express, as n earl y as possi bl e, an i n ternati on al
consen su s of opi ni on on th e rel evant su bj ects si n ce each tech ni cal com m i ttee h as represen tati on from al l
i n terested I EC N ati on al Com m ittees.
3) I EC Publ i cati on s have th e form of recom m endati on s for i n tern ati onal use an d are accepted by I EC Nati on al
Com m i ttees i n that sen se. Whi l e al l reasonabl e efforts are m ade to ensure th at th e tech n i cal conten t of I EC
Publ i cati on s i s accu rate, I EC can n ot be h el d respon si bl e for th e way i n wh i ch th ey are u sed or for an y
m i si nterpretati on by an y en d u ser.
4) I n order to prom ote i n tern ati on al u ni form i ty, I EC N ati onal Com m i ttees un d ertake to appl y I EC Pu bl i cati ons
transparentl y to the m axi m u m extent possi bl e i n thei r n ati onal an d reg i on al publ i cati on s. An y d i verg ence
between an y I EC Pu bl i cati on an d the correspondi n g nati on al or reg i on al publ i cati on sh al l be cl earl y i n di cated i n
the l atter.
5) I EC i tsel f d oes n ot provi de an y attestati on of con form i ty. I n depen d en t certi fi cati on bodi es provi de conform i ty
assessm ent servi ces an d, i n som e areas, access to I EC m arks of conform i ty. I EC i s not respon si bl e for an y
servi ces carri ed ou t by i n d epen den t certi fi cati on bodi es.
6) Al l u sers sh ou l d en su re th at th ey h ave the l atest edi ti on of th i s publ i cati on .
7) N o l i abi l i ty shal l attach to I EC or i ts di rectors, em pl oyees, servants or ag en ts i n cl u di n g i n di vi du al experts an d
m em bers of i ts tech n i cal com m i ttees and I EC N ati on al Com m i ttees for any person al i nj u ry, property d am ag e or
other dam ag e of any n atu re whatsoever, wheth er di rect or i n di rect, or for costs (i n cl ud i ng l eg al fees) an d
expenses ari si ng out of th e pu bl i cati on, use of, or rel i an ce upon, th i s I EC P ubl i cati on or an y oth er I EC
Pu bl i cati ons.
8) Attenti on i s drawn to th e N orm ati ve references ci ted i n th i s publ i cati on . U se of the referen ced pu bl i cati ons i s
i ndi spensabl e for th e correct appl i cati on of th i s publ i cati on.
9) Attenti on i s drawn to the possi bi l i ty th at som e of the el em ents of thi s I EC Pu bl i cati on m ay be th e su bj ect of
paten t ri g h ts. I EC sh al l not be h el d responsi bl e for i denti fyi n g any or al l such patent ri g h ts.

I n tern ati on al Stan dard CI SPR 25 h as been prepared by CI SPR su bcom m ittee D:
Electrom ag netic disturbances rel ated to electric/electronic equ ipm en t on veh icles and in tern al

com busti on en g i ne powered devices.
This fourth edition cancels an d replaces th e th ird edi tion published i n 2008. Th is editi on
constitutes a techn ical revision .
This edition inclu des the fol l owing sig n ifican t techn ical chan ges with respect to the previ ous
edi tion:
a) i nclu si on of ch argi n g m ode for el ectric veh icles (EV) an d plu g -i n electric veh icl es (PH EV) ,
b) th e m eth ods for ch am ber val idation h ave been incl uded,


CI SPR 25:201 6 © I EC 201 6

–9–

c) test m ethods for sh iel ded power su ppl y system s for h ig h vol tag es for el ectric an d h ybrid
electric veh icles h ave been inclu ded,
d) overal l im provem en t.
The text of th is stan dard is based on the fol lowin g docum en ts:
FDI S

Report on voti n g

CI SPR/D/432/FDI S

CI SPR/D/435/RVD

Fu l l inform ati on on th e voti ng for th e approval of th is stan dard can be fou nd in th e report on
voting in dicated in th e above table.
This publicati on has been drafted i n accordance wi th th e I SO/I EC Directi ves, Part 2.
The com m ittee h as deci ded that the con ten ts of th is pu bl icati on will rem ai n u nch an g ed u n ti l
th e stabil i ty date indicated on th e I EC web site un der "h ttp://webs tore. i ec. ch " in th e data

related to th e specific pu blicati on. At th is date, th e pu bl ication wi ll be
•

reconfi rm ed,

•

wi thdrawn ,

•

repl aced by a revised edi ti on, or

•

am ended.

I M P O R T AN T
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to

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co rr e ct
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a


– 10 –

CI SPR 25:201 6 © I EC 201 6

I NTRODUCTI ON
This I ntern ati on al Standard is desig n ed to protect on-board recei vers from disturbances
produced by con ducted and radiated em issions ari sing in a veh icl e.
Test procedures and l i m its g i ven are intended to provide provisional control of veh icl e
radi ated em issions, as well as com pon en t/m odu le conducted/radiated em issions of lon g an d
short durati on .
To accom pl ish th is en d, th is stan dard:
•

establ ish es a test m ethod for m easurin g th e electrom ag netic em issions from the el ectrical
system of a vehicl e;

•

sets lim its for th e electrom agnetic em issi ons from the electrical system of a vehicl e;

•

establ ish es test m eth ods for testin g on-board com ponen ts and m odu l es indepen den t from
th e veh icl e;

•

sets lim its for el ectrom ag n etic em issions from com pon ents to preven t objectionable
disturbance to on-board recei vers;

•

cl assifies au tom otive com ponen ts by disturbance durati on to establ ish a ran g e of l im its.

NOTE Com pon en t tests are not i ntended to repl ace veh i cl e tests. Exact correl ati on between com ponent and
veh i cl e test perform an ce i s depen den t on com ponen t m ou n ti n g l ocati on, h arn ess l en g th , rou ti n g an d g roun di n g , as
wel l as anten n a l ocati on. Com pon en ts can be eval u ated wi th com pon ent testi ng pri or to actu al veh i cl e avai l abi l i ty.


CI SPR 25:201 6 © I EC 201 6

– 11 –

VEHICLES, BOATS AND INTERNAL COMBUSTION ENGINES –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT FOR
THE PROTECTION OF ON-BOARD RECEIVERS

1

Scope

This I ntern ati on al Standard contains l im its and procedures for the m easu rem ent of radio
distu rbances in the frequency ran g e of 1 50 kH z to 2 500 M H z. Th e stan dard applies to an y
electron ic/el ectrical com pon en t in ten ded for use in veh icl es, trai lers an d devices. Refer to
I n tern ati on al Tel ecom m un icati ons U n ion (I TU ) publicati ons for detai ls of frequ ency
all ocations. Th e lim its are in ten ded to provide protecti on for recei vers i n stall ed i n a veh icle
from disturbances produ ced by com pon en ts/m odu les i n th e sam e veh icl e. Th e m ethod and
lim its for a com pl ete vehicl e (wh eth er conn ected to th e power m ains for ch arg in g pu rposes or
not) are i n Cl ause 5 an d th e m eth ods and l im its for com ponen ts/m odu les are i n Cl ause 6.
On l y a com plete veh icle test can be used to determ in e the com pon ent com patibi lity wi th
respect to a veh icl e’s l im it.
The recei ver types to be protected are, for exam ple, broadcast recei vers (soun d an d

tel evision) , l and m obi le radi o, radio telephon e, am ateur, citi zen s' radi o, Satelli te N avig ati on
(G PS etc. ) , Wi-Fi an d Bl uetooth . For th e purpose of th is stan dard, a veh icl e is a m achi n e,
wh ich is self-propel led by an internal com bustion en g in e, el ectric m eans, or both. Vehicles
incl u de (bu t are not l im ited to) passen g er cars, tru cks, ag ricul tu ral tractors and snowm obi les.
Ann ex A provides gu i dance in determ i ni n g wh ether this stan dard is applicabl e to particu l ar
equ ipm ent.
This I n tern ational Stan dard does not i nclu de protecti on of electron ic control system s from
radi o frequ ency (RF) em issions or from transi ent or pu lse-type voltag e fluctu ati ons. These
su bj ects are inclu ded i n I SO pu blicati ons.
The l im its i n th is standard are recom m ended and subj ect to m odification as agreed between
th e veh icle m an ufacturer an d th e com pon ent su ppli er. This stan dard is also i ntended to be
applied by m anufacturers an d su ppl iers of com ponen ts an d equ i pm en t wh i ch are to be added
an d con nected to th e veh icl e h arness or to an on -board power conn ector after del ivery of th e
veh icl e.
Since th e m oun tin g location, veh icl e bod y constructi on and harn ess desi gn can affect the
cou pl in g of radi o disturbances to th e on-board radio, Cl ause 6 of th is standard defi nes
m ultipl e l im it l evels. Th e l evel class to be u sed (as a fu nction of frequ en cy ban d) is agreed
upon between th e veh icl e m an ufacturer an d th e com pon ent su ppl ier.
This stan dard defi n es test m eth ods for use by Veh icl e M anufacturers an d Suppliers, to assist
in th e desi gn of veh icles and com pon en ts an d ensure con troll ed levels of on- board radio
frequency em issions.
Veh icl e test lim its are provided for gu i dance an d are based on a typi cal radi o recei ver u sin g
th e an ten n a provi ded as part of the veh icl e, or a test antenn a if a u n ique antenn a is not
specified. Th e frequ ency bands th at are defi n ed are not appl icable to al l reg i ons or cou ntri es
of th e world. For econ om ic reasons, th e veh icl e m anufactu rer is free to i den tify wh at
frequency ban ds are appl icabl e in th e coun tries i n wh ich a veh icle wil l be m arketed an d wh ich
radi o services are l ikel y to be used in that veh icl e.
As an exam ple, m an y veh icl e m odels wil l probabl y n ot h ave a tel evision receiver i nstal led; yet
th e television ban ds occupy a sig n ificant portion of th e radio spectrum . Testi n g an d m iti g ati ng
noise sources i n such veh icl es is not econ om ical l y j ustified.

– 12 –

CI SPR 25:201 6 © I EC 201 6

The veh icl e m an ufacturer sh oul d defin e th e coun tri es i n wh ich th e veh icl e is to be m arketed,
th en ch oose the appl icabl e frequ ency bands an d lim its. Com ponent test param eters can th en
be sel ected from th is standard to support th e chosen m arketi n g plan .
The World Adm in istrati ve Radi o com m unicati ons Conference (WARC) lower frequ ency l im it in
reg i on 1 was reduced to 1 48, 5 kH z in 1 979. For veh icu l ar purposes, tests at 1 50 kH z are
consi dered adequ ate. For the purposes of th is stan dard, test frequ ency ran g es h ave been
gen erali zed to cover radio services in various parts of th e world. Protecti on of radi o recepti on
at adj acent frequencies can be expected in m ost cases.
Ann ex E defin es artifici al networks used for th e m easurem ent of con ducted disturbances an d
for tests on veh icles i n charg ing m ode.
Ann ex H defi nes a qu al itati ve m ethod of j udg i ng th e degradation of radi o com m unication in
th e presence of im pu lsive n oise.
Ann ex I defi n es test m ethods for sh i elded power suppl y system s for hig h voltag e n etworks in
electric an d h ybrid vehicl es.
Ann ex J defi n es m ethods for the vali dation of th e ALSE an d th e reference g rou nd pl ane used
for com pon ent testi ng .
Ann ex K l ists work bein g considered for fu ture revisi ons.

2 Normative references
The foll owi n g docum ents are referred to i n th e text in su ch a way that som e or all of their
con ten t constitutes requ irem ents of th is docum ent. For dated references, on l y th e edition
cited appl i es. For u ndated references, th e latest edition of the referenced docum en t (incl udin g
an y am endm en ts) appl i es.

Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus

CI SPR 1 6-1 -1 : 201 5,

Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Coupling
devices for conducted disturbance measurements

CI SPR 1 6-1 -2:201 4,

CI SPR 1 6-1 -4:201 0, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-4: Radio disturbance and immunity measuring apparatus –Antennas
and test sites for radiated disturbances measurements
CI SPR 1 6-1 -4: 201 0/AM D1 :201 2

CI SPR 1 6-2-1 : 201 4, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 2-1: Methods of measurement of disturbances and immunity – Conducted
disturbance measurements

Road vehicles – Electrical disturbances from conduction and coupling –
Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other
than supply lines

ISO 7637-3: 201 6,

Road vehicles – Component test methods for electrical disturbances from
narrowband radiated electromagnetic energy – Part 4: Harness excitation methods

ISO 1 1 452-4:201 1 ,

SAE ARP 958. 1 Rev D: 2003-02,

Standard Calibration Method

Electromagnetic Interference Measurement Antennas;


CI SPR 25:201 6 © I EC 201 6

3

– 13 –

Terms and definitions

For the purposes of th is docum en t, the foll owi ng term s an d defi n itions appl y.
I SO an d I EC m ain tai n term in olog ical databases for use in stan dardi zati on at th e foll owi ng
addresses:

•
•

I EC Electropedi a: avai labl e at h ttp://www. el ectropedia. org /
I SO On l in e browsi n g platform : avai l abl e at http://www. iso. org/obp

3.1
absorber lined shielded enclosu re
ALSE

sh ielded enclosu re wi th radi o frequ ency-absorbi ng m ateri al on its in tern al ceil i n g an d wal ls
Note 1 to entry:

Th i s note appl i es to the French l an g u ag e onl y.

3.2
antenna factor

factor wh ich is appli ed to th e vol tag e m easured at the i npu t conn ector of th e m easuri n g
instrum ent to g i ve th e fi eld stren gth at th e antenn a

3.3
antenna matching unit

un it for m atch i n g th e im pedance of an anten n a to th at of the 50
th e antenn a m easuri n g frequ ency ran g e

Ω m easu ri ng

instrum ent over

3.4
artificial mains network
AM N

network th at provides a defi ned im pedance to the EU T at radi o frequ encies, cou ples the
disturbance voltag e to th e m easuri ng recei ver an d decou ples th e test circu it from the su ppl y
m ains
Note 1 to entry: Th ere are two basi c types of AMN, th e V-network (V-AMN ) wh i ch cou pl es the un sym m etri cal

vol tag es, an d the del ta-network wh i ch coupl es th e sym m etri c and th e asym m etri c vol tag es separatel y. Th e term s
l i ne i m ped ance stabi l i zati on n etwork (LI SN) an d V-AM N are u sed.
Note 2 to en try: Network i nserted i n th e power m ai ns of the veh i cl e i n ch arg i n g m ode or of a com ponen t (e. g .
ch arg er) whi ch provi d es, i n a g i ven frequ ency rang e, a speci fi ed l oad i m ped an ce an d whi ch i sol ates th e veh i cl e /
com ponent from the power m ai ns i n that frequ ency rang e.
Note 3 to en try:

Thi s note appl i es to th e French l ang u ag e onl y.

3.5
artificial network
AN

network i nserted in the suppl y lead or sig n al/l oad lead of an apparatus to be tested wh ich
provides, i n a g i ven frequ ency rang e, a specifi ed load im pedance for the m easu rem en t of
disturbance voltag es and wh ich m ay isol ate th e apparatus from th e suppl y or si gn al
sources/l oads i n th at frequency ran ge
Note 1 to en try: N etwork i nserted i n th e d. c power l i n es of th e veh i cl e i n ch arg i n g m ode whi ch provi des, i n a g i ven
freq u en cy ran g e, a speci fi ed l oad i m pedan ce an d whi ch i sol ates the vehi cl e from the d. c power su ppl y i n th at
freq u en cy ran g e.
Note 2 to entry:

Th i s note appl i es to the French l an g u ag e onl y.


– 14 –

CI SPR 25:201 6 © I EC 201 6

3.6

asymmetric artificial network
AAN

network used to m easu re (or inj ect) asym m etric (com m on m ode) voltages on unsh ielded
sym m etric sign al (e. g . telecom m un ication) l i n es wh ile rej ecti n g th e sym m etric (differential
m ode) si g nal
Note 1 to en try: Thi s n etwork i s i n serted i n th e com m un i cati on/si g n al l i n es of the veh i cl e i n charg i n g m ode or of a
com ponent (e. g . ch arg er) to provi d e a speci fi c l oad i m pedance and/or a d ecou pl i ng (e. g . between
tel ecom m u ni cati on si g n al an d power m ai ns) .
Note 2 to entry:

Th i s note appl i es to the French l an g u ag e onl y.

3.7
average detector

detector th e output vol tag e of wh ich is th e averag e valu e of th e en vel ope of an applied si g nal
Note 1 to entry:

Th e averag e val u e sh al l be taken over a speci fi ed ti m e i nterval .

[ SOU RCE: I EC 60050-1 61 :1 990,

1 61 -04-26 ] [5] 1

3.8
3.8.1
bandwidth

<equ i pm ent> wi dth of a frequ en cy ban d over wh ich a g i ven characteristic of an equ ipm en t or

transm issi on chan nel does not differ from its reference valu e by m ore than a specifi ed am oun t
or rati o
Note 1 to entry: Th e g i ven characteri sti c m ay be, for exam pl e, the am pl i tude/freq uen cy ch aracteri sti c, th e
ph ase/freq uen cy characteri sti c or th e del ay/freq uen cy characteri sti c.

[ SOU RCE: I EC 60050-1 61 :1 990,

1 61 -06-09 ] [5]

3.8.2
bandwidth

<em ission or sig n al> wi dth of the frequ ency band ou tside wh ich th e l evel of an y spectral
com pon ent does n ot exceed a specifi ed percentage of a reference l evel

[ SOU RCE: I EC 60050-1 61 :1 990,

1 61 -06-1 0 ] [5]

3.9
bonded

<g rou nd con n ecti on and DC resistance> grou n din g con nection with a DC resistance n ot
exceedin g 2, 5 m Ω an d th at provides th e l owest possi bl e im pedance (resistance an d
i ndu ctance) con n ection between two m etall ic parts (see 5. 3 of CI SPR 1 6-2-1 :201 4)
Note 1 to entry:

A l ow cu rrent ( ≤ 1 00 m A) 4-wi re m i l l i ohm m eter i s recom m en ded for th ese m easurem ents.

3.1 0

broadband emission

emission wh ich h as a bandwidth greater th an that of a particu lar m easurin g apparatus or
receiver
Note 1 to en try: An em i ssi on whi ch h as a pu l se repeti ti on rate (i n H z) l ess th an the ban d wi dth of a parti cu l ar
m easu ri n g i n stru m ent can al so be con si d ered as a broad band em i ssi on.

_______________
1

Nu m bers i n sq u are brackets refer to th e Bi bl i og raph y.


CI SPR 25:201 6 © I EC 201 6

– 15 –

3.1 1
class

perform ance level ag reed upon by th e purch aser an d th e su ppl i er an d docum ented in the test
plan

3.1 2
compression point

i npu t si gn al l evel at which the gai n of the m easuri ng system becom es non- l in ear such th at th e
i ndicated ou tpu t devi ates from an ideal l in ear recei vi n g system 's output by a specifi ed
i ncrem en t in dB

3.1 3
device

m achine dri ven by an internal com busti on en g i ne wh ich is n ot prim ari ly i n ten ded to carry
persons or g oods
Note 1 to entry: Devi ces i n cl u de, but are n ot l i m i ted to, ch ai n saws, i rri g ati on pum ps, sn ow bl owers, ai r
com pressors, and l an dscapi n g equ i pm ent.

3.1 4
disturbance voltage

interference vol tag e (deprecated in th is sense)
voltag e produ ced between two poin ts on two separate conductors by an electromagnetic
disturbance, m easured u nder specified con diti ons
[

SOU RCE: I EC 60050-1 61 :1 990, 1 61 -04-01 ] [5]

3.1 5
high voltag e
HV

operati n g voltag e between 60 V to 1 000 V
Note 1 to entry:

Th e term hi g h vol tag e m ay be d efi n ed wi th a di fferen t vol tag e rang e i n oth er stan dards.

3.1 6
high voltage artificial network
HV-AN

network i nserted in th e h ig h voltage DC lead of apparatus to be tested wh ich provi des, i n a
g iven frequ ency ran g e, a specifi ed l oad im pedance for th e m easurem ent of distu rbance
voltag es an d wh ich m ay i solate th e apparatus from the su ppl y in th at frequ ency ran g e

Note 1 to entry:

Th i s note appl i es to the French l an g u ag e onl y.

3.1 7
low voltage
LV

operati n g DC vol tag e bel ow 60 V, e. g . n om in al vol tag es of 1 2 V, 24 V or 48 V

Note 1 to entry:

Th e term l ow vol tag e m ay be defi n ed wi th a di fferent vol tag e ran g e i n other standards.

3.1 8
measurement time

effective, coherent tim e for a m easurem en t resul t at a sin g l e frequency
–
–
–

for th e peak detector, the effecti ve tim e to detect the m axim um of the sig n al en vel ope,
for th e qu asi-peak detector, the effecti ve tim e to m easu re th e m axim um of th e wei g hted
en vel ope

for th e averag e detector, th e effecti ve tim e to averag e the sig n al en vel ope


– 16 –

CI SPR 25:201 6 © I EC 201 6

3.1 9
narrowband emission

emission wh ich h as a bandwidth l ess th an th at of a particu lar m easuri n g apparatus or recei ver
Note 1 to en try: An em i ssi on whi ch h as a pul se repeti ti on rate (i n H z) g reater th an th e ban d wi dth of a parti cu l ar
m easu ri n g i n stru m ent can al so be consi d ered as a narrowban d em i ssi on .

3.20
peak detector

detector, th e ou tpu t voltage of wh ich is th e peak valu e of an appl ied si g nal
[

SOU RCE: I EC 60050-1 61 :1 990, 1 61 -04-24 ] [5]

3.21
quasi-peak detector

detector h avi ng specified electrical time constants which , when reg u larl y repeated iden tical
pulses are appl ied to it, del i vers an ou tpu t voltag e wh ich is a fracti on of the peak valu e of th e
pu lses, th e fraction increasin g towards un i ty as th e pulse repeti ti on rate is increased
[

SOU RCE: I EC 60050-1 61 :1 990, 1 61 -04-21 ] [5]

3.22
reference ground plane

flat con ducti ve surface whose potenti al is used as a com m on reference

Note 1 to entry: For the pu rposes of thi s stan dard, th e referen ce g roun d pl ane i s defi ned as the top m etal l i c
surface of th e test ben ch /tabl e.

[SOU RCE: I EC 60050-1 61 :1 990, 1 61 -04-36, m odifi ed – Modification of th e defin i tion. ] [5]

3.23
RF boundary

elem en t of an EM C test setu p th at determ i nes wh ich part of the harn ess and/or peri pherals
are incl u ded i n the RF en vironm en t and wh ich part is excl u ded
Note 1 to en try:
shi el di ng .

I t m ay con si st of, for exam pl e, AN s, fi l ter feed-th rou g h pi ns, RF absorber coated wi re, an d/or RF

Note 2 to entry:

Th i s note appl i es to the French l an g u ag e onl y.

3.24
shielded enclosure

m esh or sh eet m etall ic housi ng desi gn ed expressl y for the purpose of electrom ag n etical l y

separati n g th e i nternal and th e external en vironm en t
[ SOU RCE: I EC 60050-1 61 : 1 990, 1 61 -04-37, m odified – The secon d preferred term "screen ed
room " h as been om itted. ] [5]

3.25
validation reference ground plane

elevated reference grou nd pl ane wi th the dim en si ons of 2, 5 m
stan dard for th e reference m easurem ents/m odell i ng per An n ex J

×

1 m wh ich is u sed as the

Note 1 to entry: The val i d ati on referen ce g rou nd pl ane si ze an d g roun di n g used duri n g th e referen ce
m easu rem ents and/or m odel l i n g m ay be di fferent than wh at a l aboratory woul d use du ri n g E UT m easu rem ents.


CI SPR 25:201 6 © I EC 201 6

4

– 17 –

Requirements common to vehicle and component/module emissions
measurements

4.1

General test requirements

4.1 .1

Categories of distu rbance sources (as applied in the test plan)

Electrom ag netic disturbance sources can be di vided in to two m ain types:
•

narrowband sources (exam ples of n arrowban d disturbance sources are veh icle electron ic
com pon ents wh ich incl u de clocks, oscill ators, dig ital log ic from m icroprocessors an d
displ ays) ;

•

broadban d sou rces (exam ples of broadban d distu rbance sources are el ectrical m otors an d
i gn ition system s) .

NOTE 1 Whi l e m ost vehi cl e or el ectri cal /el ectron i c com ponen ts are a source of both narrowban d an d broadban d
di sturban ces, som e can be a source of onl y on e type of di stu rbance.
NOTE 2 Broadban d sou rces can be cl assi fi ed i n short-d u rati on broad ban d (exam pl es are wash er pu m p, door
m i rror, el ectri cal wi n dows) an d l on g -du rati on broadban d (exam pl es are fron t wi per m otor, h eater bl ower, en g i ne
cool i n g )

For the purposes of th is stan dard, categori zati on of th e disturbance type is used onl y i n
sim pl ifyin g th e testi n g dem ands by potenti al l y reducin g the nu m ber of detectors that sh al l be
used (i . e. el im i natin g th e averag e detector if th e device is known to be broadban d-type of
source, such as a DC brush com m utated m otor) . Oth erwise, this stan dard requ ires th at
sources com pl y wi th l im its based u pon both types of m easu rem en t detectors and n ot th e type
of disturbance.

4.1 .2

Test plan

A test pl an shal l be establ ish ed for each i tem to be tested. Th e test plan shall specify the
•

frequency ran ge to be tested,

•

em issions l im its,

•

an ten n a types and locati ons,

•

test report requ irem en ts,

•

suppl y voltage an d oth er relevant param eters.

The test pl an sh al l defin e for each frequ ency ban d wh eth er th e conform an ce can be obtain ed
wi th averag e an d peak l im its or wi th average an d qu asi -peak l im its.

4.1 .3

Determination of conformance of equipment under test (EUT) with limits

I n al l cases the EUT shal l conform to th e averag e lim it.
The EUT sh al l also conform to either peak or qu asi-peaks l im its as follows.
•

For frequ enci es wh ere both peak and qu asi -peak l im its are defi n ed, th e EU T shal l conform
to ei th er the peak or th e qu asi-peak l im its (as defined in the test plan) .

•

For frequ encies wh ere on l y peak l im its are defi n ed, th e EU T shal l conform to th e peak
l im it.

The gen eral procedu re applicabl e for al l frequency ban ds is descri bed in Fig ure 1 .
The l im its g i ven in th is stan dard take u ncertain ti es in to accoun t.


– 18 –

CI SPR 25:201 6 © I EC 201 6

IEC
a

The conform ance can n orm al l y be obtai n ed by com pl i an ce to both averag e an d peak l i m i ts or both averag e an d
qu asi -peak l i m i ts, u nl ess th e test pl an d efi n es that con form ance can be obtai n ed by com pl i ance to th e si n g l e
appropri ate l i m i t (depending on the case, peak, or average, or quasi-peak).

b

Because m easu rem ents wi th a peak detector are al ways hi g h er th an or equal to m easu rem en ts wi th an averag e
detector an d the appl i cabl e peak l i m i t i s al ways h i g her th an or eq u al to th e appl i cabl e averag e l i m i t, th i s si ng l e
detector m easu rem ent can l ead to a si m pl i fi ed an d q ui cker con form an ce process.

c

Thi s fl ow-ch art i s appl i cabl e for each i n di vi du al frequ en cy, e. g . onl y frequ enci es th at are above th e appl i cabl e
l i m i t need to be rem easu red wi th averag e or qu asi -peak detector.

Figure 1 – Method of determination of conformance for all frequency bands
4.1 .4

Operating conditions

Different operatin g condi ti ons of th e EUT can influence em issi on m easu rem ent resu lts. When
perform in g com pon en t/m odu l e tests, th e EU T shall be m ade to operate u n der typical l oadi ng
an d oth er con ditions as in th e veh icl e such that th e m axim um em ission state occurs . The
operati n g con ditions shal l be specified i n the test plan.
To ensure correct operation of com ponents/m odu les du rin g test, a peripheral i nterface u n it
shall be used wh ich sim u lates th e veh icl e in stall ati on . Depen di ng on the i ntended operati n g
m odes, all sig n ificant sen sor and actuator l eads of the EUT shal l be con nected to a periph eral


CI SPR 25:201 6 © I EC 201 6

– 19 –

interface u n i t. Th e peri ph eral interface un i t sh all be capabl e of controlli n g th e EUT i n
accordance wi th th e test plan.

The periph eral in terface u n i t m ay be l ocated i nternal l y or external l y to the sh iel ded enclosure.
If located i n th e sh i el ded enclosure, the distu rbance levels g en erated by th e peri ph eral
interface un it sh all be at l east 6 dB below the test l im its specifi ed in th e test pl an .

4.1 .5

Test report

The report sh all con tain the inform ati on agreed u pon by th e cu stom er and the su ppl ier, e. g .
•

sam ple i den tification ,

•

date an d tim e of test,

•

ban dwi dth,

•

step size,

•

requ ired test lim it,

•

am bi en t data and test data.

4.2

Shielded enclosure

The am bien t electrom ag netic noise levels shal l be at least 6 dB below th e l im its specifi ed in
th e test pl an for each test to be perform ed. The shi el din g effecti ven ess of the sh i elded
encl osure sh all be su fficien t to assu re th at the requ ired am bien t el ectrom ag n etic noise l evel
requ irem ent is m et.
NOTE Al th ou g h th ere wi l l be refl ected energ y from th e i n teri or su rfaces of th e shi el ded en cl osure, th i s i s of
m i nim al con cern for th e m easu rem ent of con du cted di stu rbances because of th e di rect coupl i n g of th e m easuri n g
i nstrum ent to th e l eads of the EUT. Th e shi el d ed encl osu re can be as si m pl e as a su i tabl y g rou n d ed ben ch -top
screen ed cag e.

4.3
4.3.1

Absorber-lined shielded enclosu re (ALSE)
General

For radiated em issi on m easurem ents, h owever, the refl ected en erg y can cause errors of as
m uch as 20 dB. Therefore, it is necessary to appl y RF absorber m ateri al to th e walls an d
ceil in g of a sh i elded en closure th at is to be u sed for radi ated em ission m easurem en ts. No
absorber sh all be placed on th e fl oor for veh icl e tests. For com pon ent testi n g, no absorber
shall be pl aced on the fl oor, however, flat ferrite ti l es with a m axim um th ickness of 25 m m
m ay be u tilised on th e floor for com pon en t l evel testin g if th e ch am ber perform ance in th is
config urati on m eets th e requ irem ents of An nex J .
The fol lowin g ALSE requ irem en ts sh all also be m et for perform in g radi ated RF em issions

m easurem ents.

4.3.2

Size

For radiated em issions tests, th e sh iel ded encl osure sh al l be of sufficien t si ze to ensu re that
nei th er th e vehicl e/EUT n or th e test antenn a shal l be closer th an 1 m from the wal ls or cei li n g,
or to th e n earest su rface of th e absorber m aterial used thereon.

4.3.3

Objects in ALSE

For radiated em issions m easurem ents in particu lar, the ALSE sh al l be cl eared of al l i tem s not
pertin ent to th e tests. Th is is requ ired i n order to reduce an y effect th ey m ay have on th e
m easurem ent. I nclu ded are u n necessary equ ipm en t, cable racks, storag e cabinets, desks,
chairs, etc. Person n el n ot acti vel y i n vol ved in th e test sh all be exclu ded from the ALSE.


– 20 –

4.3.4

CI SPR 25:201 6 © I EC 201 6

ALSE performance validation

4.3.4.1

Vehicle ALSE

Perform ance of th e absorption m aterial sh al l be greater th an or equal to 6 dB i n th e 70 MH z to
2 500 M H z frequ ency ran ge.
NOTE A test m eth od i s descri bed i n I EEE STD 1 1 28-1 998 [4] .

4.3.4.2

Component ALSE

Perform ance of th e absorpti on m aterial sh all be greater th an or equal to 6 dB in th e 70 MH z to
2 500 M H z frequ ency ran ge.
NOTE 1

A test m ethod i s descri bed i n I EEE STD 1 1 28-1 998 [4] . ”

NOTE 2 Addi ti onal l y, th e ALSE perform an ce val i d ati on procedu re descri bed i n Ann ex J m ay be used to eval uate
th e perform an ce of th e sh i el ded en cl osu re as con fi g u red for 6. 5 com ponen t radi ated em i ssi on s testi n g . Th i s
perform an ce veri fi cati on procedu re wi l l eval uate th e i n fl uences of th e ch am ber, absorber, g rou n d pl an e, g rou n d
pl an e g rou ndi n g , an d an y oth er possi bl e cau se for m easu rem en t vari ati on .

4.4
4.4.1

Measuring instrument
General

The m easurin g instrum ent shal l com pl y wi th the requ irem ents of CI SPR 1 6-1 -1 . Ei ther m an u al
or autom atic frequ ency scan n i ng m ay be u sed.
For th e lim its g i ven i n th is stan dard, th e appropri ate averag e detector is the l in ear detector

wi th m eter tim e constants defi n ed in CI SPR 1 6-1 -1 .
NOTE 1 Spectrum anal ysers and scan ni ng recei vers are parti cul arl y usefu l for di stu rban ce m easurem en ts. The
peak detecti on m ode of spectrum anal ysers and scan n i ng recei vers provi des a di spl ay i n di cati on whi ch i s never
less th an the qu asi -peak i n di cati on for th e sam e ban d wi dth . I t can be con veni en t to m easu re em i ssi ons usi ng peak
detecti on becau se of th e faster scan possi bl e th an wi th q u asi -peak d etecti on.
NOTE 2 A pream pl i fi er can be used between th e antenn a and m easuri n g i n strum ent i n order to ach i eve th e 6 dB
am bi en t n oi se requi rem ents (see 4. 2) . I f a pream pl i fi er i s u sed to ach i eve th e 6 dB am bi en t noi se requ i rem en t, th e
laboratory establ i shes a procedu re to avoi d overl oad of th e pream pl i fi er, such as u si n g a step attenu ator.

4.4.2

Spectrum analyser parameters

The scan rate of th e spectrum an al yser shall be adj usted for th e CI SPR frequ en cy ban d an d
detecti on m ode used.
Spectrum anal ysers m ay be used for perform in g com pl i ance m easurem en ts to this stan dard
providi ng the precau tions cited in CI SPR 1 6-1 -1 on th e use of spectrum an al ysers are
adh ered to an d th at th e broadban d em issi ons from the product bei ng tested h ave a repeti tion
frequency greater than 20 H z.
The m in im um scan tim e i n Tabl e 1 is applicable on l y for th e m easurem en t of em issions where
th e pu lse repetition interval of th e sig n al is sh orter th an th e m in im u m observation tim e at each
frequ ency based on a step size equal to h alf of the resol uti on ban dwi dth B res . For the
m easu rem ent of si gn als wi th a pu lse repeti tion in terval lon ger th an th e m in im um observation
tim e, an d for the m easurem ent of in term ittent si gn als th e m in im u m scan tim e has to be
increased.
I f the pu lse repetiti on i nterval of the si gn al is known th e scan sh al l be perform ed with a scan
tim e th at al lows an observation tim e at each frequ ency that is lon ger than the reci procal of th e
pu lse repetiti on frequency of th e si g nal .
As al tern ative, m ulti ple faster scans wi th th e use of a m axim um hol d fu nction m ay be used if
th e total scan n ing tim e is equ al to, or greater than , the tim e th at wou ld have been spent usin g

CI SPR 25:201 6 © I EC 201 6

– 21 –

th e m i nim um scan tim e defin ed i n Table 1 . Th e foll owi n g equ ati on can be used to calcu late
th e m i nim u m scan tim e for m u lti pl e scans.

Ts, min = 2 ×

Δf

Bres

(1 )

wh ere

Ts, m i n
∆f
B res

is the m in im um scan tim e for m u lti pl e scans,
is the frequ ency span ,
is the resol ution ban dwi dth (RBW) .

For fu rth er g u i dance on the m easu rem ent of th e duration of disturbance an d the determ in ation
of th e m in im um scan tim e, see CI SPR 1 6-2-1 an d CI SPR 1 6-2-3 [7] .

– 22 –

CI SPR 25:201 6 © I EC 201 6

Table 1 – Spectrum analyser parameters
Service /
Band

Frequen cy
MH z

Peak detection

Quasi-peak detection

Average d etection

RBW
at − 3 dB

Min.
scan time

RBW
at − 6 d B

Min.
scan time

RBW
at − 3 dB

Min.
scan time

9 kH z or
1 0 kH z

1 0 s / MH z

9 kH z

200 s /
MH z

9 kH z or
1 0 kH z

1 0 s / MH z

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

1 20 kH z

20 s /

MH z

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

Does n ot
appl y

Does n ot
appl y

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

9 kH z or
1 0 kH z

1 0 s / MH z

9 kH z

200 s /
MH z

9 kH z or
1 0 kH z

1 0 s / MH z

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

1 20 kH z

20 s /
MH z

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

Does n ot
appl y

Does n ot
appl y

Does n ot
appl y

Does n ot
appl y

9 kH z or
1 0 kH z

1 s / MH z

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

Does n ot
appl y

Does n ot
appl y

1 00 kH z or
1 20 kH z

1 00 m s /
MH z

BROADCAST
LW

0, 1 5 to 0, 30

MW

0, 53 to 1 , 8

SW

5, 9 to 6, 2

FM

76 to 1 08

TV Band I

41 to 88

TV Band I I I

1 74 to 230

DAB I I I

1 71 to 245

TV Band I V/V

468 to 944

DTTV

470 to 770

DAB L ban d

1 447 to 1 494

SDARS

2 320 to 2 345

MOBI LE
SERVI CES
CB

26 to 28

VH F

30 to 54

VH F

68 to 87

VH F

1 42 to1 75

Anal og ue
UHF

380 to 51 2

RKE

300 to 330

RKE

420 to 450

Anal og ue
UHF

820 to 960

G SM 800

860 to 895

EGSM/GSM
900

925 to 960

G PS L1 ci vi l

1 567 to 1 583

G LON ASS L1

1 591 to 1 61 3

G SM 1 800
(PCN )

1 803 to 1 882

G SM 1 900

1 850 to 1 990

3G / I MT 2000

1 900 to 1 992

3G / I MT 2000

2 01 0 to 2 025

3G / I MT 2000

2 1 08 to 2 1 72

Bl uetooth/
802. 1 1

2 400 to 2 500

When a spectrum an al yser is used for m easurem en ts, th e video ban dwi dth shal l be at least
three tim es the resol uti on bandwi dth (RBW) .


CI SPR 25:201 6 © I EC 201 6

4.4.3

– 23 –

Scanning receiver parameters

The dwel l tim e of th e scan n ing receiver sh all be adj usted for th e CI SPR frequ en cy ban d an d
detection m ode used. The m in im u m m easurem ent tim e, m axim um step si ze an d
recom m ended ban dwi dth (BW) are l isted i n Table 2.
The m inim um m easurem ent tim e i n Tabl e 2 i s appl icabl e on l y for the m easurem ent of
em issi ons wh ere the pu lse repeti tion in terval of th e sig n al is shorter than th e m inim um
m easurem ent tim e i n Table 2. For the m easurem en t of si g nals with a pu lse repetition i nterval
lon g er than the m in im um m easurem ent tim e i n Table 2 and for th e m easurem ent if interm itten t
si gn als th e m in im um m easurem ent tim e h as to be i ncreased.
If the pu lse repeti tion i nterval of the sig n al is known th e scan shall be perform ed with a
m easu rem ent tim e th at i s lon g er th an th e reciprocal of th e pu lse repetition frequ ency of th e
si gn al.

For fu rth er g u i dance on the m easurem ent of th e duration of disturbance an d the determ in ati on
of th e m in im um m easurem ent tim e see CI SPR 1 6-2-1 an d CI SPR 1 6-2-3 [7] .