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IEC 60512-23-3
Edition 2.0 2018-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electromechanical components Connectors for electrical and electronic
equipment – Basic testing procedures and measuring methods –
Tests and measurements –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of
connectors and accessories – Line injection method
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IEC 60512-23-3
Edition 2.0 2018-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Electromechanical components Connectors for electrical and electronic
equipment – Basic testing procedures and measuring methods –
Tests and measurements –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of
connectors and accessories – Line injection method
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.220.01 ISBN 978-2-8322-6360-0
– 2 – IEC 60512-23-3:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope and object . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Test method . 9
4.1 Test requirements . 9
Test screen diameter .
4.2 Applicable frequency range . 9
5 Test equipment . 10
6 Preparation of the sample under test specimen . 11
6.1 General . 11
6.2 Circular connectors . 11
6.3 Rectangular connectors . 12
6.4 Connectors for printed boards . 12
6.5 Impedance matching of primary and secondary circuits . 13
6.5.1 General. 13
6.5.2 Preparation of the secondary circuit . 13
6.5.3 Adaptation of the primary circuit . 13
6.6 Calibration of test set-up . 13
7 Measurement of shielding effectiveness . 14
7.1 Measurement . 14
7.2 Method of calculating shielding effectiveness SE (attenuation) from surface
transfer impedance Z . 14
T
8 Requirements . 15
9 Details to be specified . 15
Bibliography . 16
Figure 1 – Principle of line injection method . 8
Figure 2 – Installation of test set-up . 11
Figure 3 – Example of test set-up for shielded circular connectors . 12
Figure 4 – Example of test set-up for shielded rectangular connectors . 12
Figure 5 – Example of test set-up for shielded printed board connectors . 13
Figure 6 – Calibration test set-up . 14
Figure 7 – Example of a shielding attenuation (shielding effectiveness) plot . 15
Table 1 – Requirements for transfer impedance .
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL COMPONENTS CONNECTORS
FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
BASIC TESTING PROCEDURES AND
MEASURING METHODS TESTS AND MEASUREMENTS –
Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness
of connectors and accessories – Line injection method
FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC 60512-23-3:2018 RLV © IEC 2018
International Standard IEC 60512-23-3 has been prepared by subcommittee 48B: Electrical
connectors, of IEC technical committee 48: Electrical connectors and mechanical structures
for electrical and electronic equipment.
This second edition cancels and replaces the first edition, published in 2000. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) an introduction has been added to provide some guidance to this document in view of
concurrent test method 23g in the same family;
b) the frequency range for which this test method is considered reliable moved from 1 GHz
to 3 GHz, to be consistent with Figure 7 (unchanged) and current industry practice and
need;
c) update to IEC 62153-4-6:2017 of former normative reference IEC 60096-4-1:1990,
withdrawn and incorrect (should have been IEC 61196-1:1995, also withdrawn);
d) update to current subclause numbers of IEC 62153-4-6:2017 what were the previous
subclause numbers referenced in IEC 61196-1:1995 (wrongly attributed to IEC 60096-4-
1:1990). For immediate understanding the title of these subclauses has been added;
e) alignment of title to the current scope of SC 48B (connectors) and inclusion of electrical
equipment as target application of said connectors (per current scope of TC 48) and
explicit reference to the method – line injection – for the measurement of transfer
impedance;
f) symbols SE for shielding effectiveness and Z for surface transfer impedance added
T
throughout the document;
g) list of connectors to which the test method is applicable – previously in 3.1 – moved in
scope;
h) former name of AECMA organization changed to the current ASD-STAN;
i) “specimen” used instead of “sample” throughout the document;
j) clarification in the title of what transfer impedance is described in Table 3 and editorial
improvement of the same;
k) “dielectric constant” changed into the updated term “relative permittivity”;
l) added a note to warn about the fact that this test method requires in 6.6 a TDR with more
stringent rise time of less than 100 ps than the value of less than 350 ps specified both in
IEC 62153-4-6 and in EN 50289-1-6 for the similar line injection method applied to
screened cables, whereas test 23g of IEC 60512-23-7 specifies for the same purpose a
TDR with a rise time of less than 200 ps;
m) adoption of term “connector housing” [IEV 581-27-10] instead of “shell” to address the
connector accessory providing the shielding;
...