1. The coupling/decoupling network shall be connected
as short as possible to the ground reference plane.
Therefore the ground connector at the rear panel of
the CDN shall be used.
2. The EFT generator has also to be connected as short
as possible to the coupling matrix. Therefore use the
ground terminal at the rear panel of the coupler and
the short coaxial EFT cable at the front.
3. According to IEC 61000-4-5 the coupling network and
the generator is specified in that way, that an
increased earth fault current may exist.
This means:
1. Earth current protectors shall be excluded
from the test set-up.
2. Both, the CDN as well as the generators must
be grounded well. The ground reference
plane shall be connected to protective earth.
Additional to the ground connection between the generator and CNI 503, it is necessary to make a solid
connection to the reference ground (illustrated in yellow color in figures 6.6 & 6.7).