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Test standards, such as IEC / EN 61000-4-2 (2001) for example, give detailed
information about the assembly of the test rig, the associated organization, the
EUT itself and the documentation.
7.1 Standard-compliant procedures
The ESD simulator system type NSG 437 is constructed in accordance with the
requirements called for in the standard and is calibrated in a standard-conform
manner.
The test engineer is duty-bound to study the relevant test requirements and
adapt the facilities to suit the EUT in question.
The necessary documents can be obtained directly from the offi ces of CENELEC
(www.cenelec.org), the IEC (www.iec.ch), the ANSI (www.ansi.org), the IEEE
(www.ieee.org) etc., or they are available from national standards bureau.
7.2 Other situations
It is not always possible to arrange a test rig in exact conformity with the rel-
evant standards. However, by abiding by some basic rules, it is still possible
to obtain meaningful assessments of a EUT’s sensitivity to interference and to
obtain valuable pointers to improving its immunity.
An electrostatic discharge is always associated with high frequency properties,
which extend well above the 1 GHz range. Screening, earthing and fi ltering
measures must therefore also be effective up into this range of frequencies.
The possible paths the pulse energy might take need to be thought about. It is
absolutely essential the pulse return path is fed back through the generator’s
earth cable.
7 TEST PROCEDURES