Commonly Asked Questions About Pre-Compliance Emissions Testing - Hameg Instruments HZ530 Manual Del Usuario

Commonly asked questions about
pre-compliance emissions testing
How can pre-compliance instruments be defined?
Why is there such a cost difference between
compliance and pre-compliance test instruments?
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The EMC Directive has prompted a large selection in the choice of
EMC test instruments. In particular, a new class of low-cost pre-
compliance instruments has opened an debate on the merits of this
new class of instruments compared with established high-cost EMC
compliance test equipment. In this situation it's not surprising that a
high degree of confusion prevails. In order to get a clear view of the
situation, the first step is to define compliance and pre-compliance
EMC test equipment and then establish how they differ.
HAMEG Instruments has considerable experience with both types
of equipment. We use high-cost equipment for compliance testing
and also specify and design low-cost pre-compliance equipment.
As a result, we are well positioned to express a balanced view in
this debate.
The following questionnaire is a summary of commonly asked
questions concerning the practical use of HAMEG measuring
equipment for EMC pre-compliance testing and how useful EMC
pre-compliance instruments are in general.
EMC standards for both radiated and conducted emissions require
that compliance measuring equipment conforms to CISPR 16-1.
This requirement implies that for full compliance tests you need
expensive, high-quality receivers. On the other hand, you can use
pre-compliance equipment as tools to build EMC conformance into
your products during design and development. Often the debate
over compliance or pre-compliance instruments reduces to a choice
between a test receiver or a spectrum analyzer. However, these
definitions and choices are not the whole story because the way
you make EMC measurements can have more influence on the
validity of a test than the type of equipment you use.
Instruments for making compliance measurements must conform to
CISPR 16. This standard details stringent requirements, and some are
Änderungen vorbehalten / Subject to change without notice