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【范围】
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This method is used to define the immunity of electric and electronic apparatus and
equipment (products) to radiated electromagnetic (EM) energy.
This method is based on injecting the calibrated radio frequency currents (voltages) into
external conductors and/or internal circuits of the product under test, measuring the strength
of the EM field generated by this product and evaluating its immunity to the external EM field
on the basis of the data obtained.
The method can be utilized only when it is physically possible to connect the injector to the
conductors and/or circuits mentioned before.
The method allows:
Evaluating immunity of the product under test to external EM fields of the strength equal
to a normalized one;
Calculating the level of external EM field strength at which the given (including maximum
permissible) induced currents or voltages are generated in the equipment under test, or
solving the “opposite” task;
Finding potentially “weak” points of the product design (housing, shield, etc.), through
which EM energy can enter inside the product.
The method capabilities mentioned above define the sphere of its application:
Measurements of electronic product immunity to external EM fields at different
conditions (polygons, laboratories, in-situ) as an alternative to direct test methods;
Operating instruments for a designer working out the product of a given immunity to
external EM fields.
This method can’t be directly applied to evaluate the immunity of the equipment under test
to the pulse electromagnetic fields. But it can be used to get the initial data necessary to
solve this task.strRefField
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