Preface: This is the second edition of CSA C61000-4-1, Electromagnetic compatibility (EMC) — Part 4-1: Testing and measurement techniques — Overview of the IEC 61000-4 series, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Technical Report 61000-4-1 (first edition, 2016-04). It supersedes the previous edition, published in 2009 as CAN/CSA-C61000-4-1 (adopted IEC 61000-4-1:2006). At the time of publication, IEC TR 61000-4-1:2016 is available from IEC in English only. CSA Group will publish the French version when it becomes available from IEC. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope and object: This part of IEC 61000 gives information and guidance on the EMC basic standards and other basic EMC documents published in the IEC 61000-4 series. Those basic standards describe mainly immunity tests to be considered and applied for electric and electronic equipment, including systems. The object of this part of IEC 61000 is to give assistance to the technical committees of IEC or other bodies, users and manufacturers in considering the immunity test methods applicable to their products; determining the immunity test methods relevant for the electromagnetic environment in which their products are intended to be used; specifying the ports of their products being subjected to the relevant immunity test methods.