CISPR 16-4-2:2011+A1:2014 is a basic EMC publication. It specifies the method of applying Measurement Instrumentation Uncertainty (MIU) when determining compliance with CISPR disturbance limits. The
material is also relevant to any EMC test when interpretation of the
results and conclusions reached will be impacted by the uncertainty
of the measurement instrumentation used during testing. This second
edition includes significant technical additions about methods of
conducted disturbance measurements on mains and communication ports
and about methods of radiated disturbance measurements using a FAR
in the ranges of 30 MHz to 1 000 MHz and of 1 GHz to 18 GHz. The
annexes contain the background material used in providing the amount
of MIU found in generating the CISPR values shown in the main
document and hence provide valuable background material for those
needing both initial and further information on MIU and how to take
individual uncertainties in the measurement chain into account. The
annexes, however, are not intended to be a tutorial or user manual
or to be copied when making uncertainty calculations. For that
purpose, the references shown in the bibliography, or other widely
recognized documents, may be used. Measurement instrumentation
specifications are given in the CISPR 16-1 series, while the methods
of measurement are covered in the CISPR 16-2 series. Further
information and background on CISPR and radio disturbances is given
in CISPR 16-3. The other parts of the CISPR 16-4 series contain
further information on uncertainties in general, statistics and
limit modelling.

This consolidated version consists of the second edition (2011)
and its amendment 1 (2014). Therefore, no need to order amendment in
addition to this publication.