Abstract
IEC 61726:2022 describes the measurement of screening attenuation by the reverberation chamber measurement method, also called mode stirred chamber method.
This document is applicable to screening attenuation measurements of cable assemblies, cables, connectors, and passive microwave components, such as waveguides, phase shifters, diplexers/multiplexers, power dividers/combiners, etc.
This fourth edition cancels and replaces the third edition published in 2015. This edition includes the following significant technical changes with respect to the previous edition:
a. reworded Clause 1 "Scope";
b. replaced IEC TS 62153-4-1 by IEC 62153 (all parts) in Clause 2;
c. added the definition of screening attenuation in 3.1;
d. added Clause 4 "Principle of screening attenuation measurement";
e. added the descriptions of some test set-ups, such as frequency synthesizer, spectrum analyser, stepper motor, linking devices and the sampling system, etc. in Clause 5;
f. added Clause 6 "DUT";
g. reworded Clause 7 "Measurement procedure";
h. added Clause 8 "Caution notes";
i. added Clause 9 "Acceptance criterion";
j. added Clause 10 "Information to be given in the relevant specification".
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