EM TEST UCS 500Mx - ESD Generator Test Setup; Correct ESD Test Setup Guidelines

EM TEST UCS 500 Series
Operating Manual V 3.05 52 / 57
12.4. ESD Generator
12.4.1. Test set-up according IEC 61000-4-2
A correct test set-up is very important for a reproducible test procedure. Especially for ESD testing the correct
test set-up specified in the standard is mandatory.
Some of the most important points are the following:
- Test table
The test must be conducted on a wooden test table. On the table, a metallic plane of at least 1,6x 0,8m must be
used. The EUT shall be isolated by 0,5mm to this metallic plane, the so called horizontal coupling plane.
- Ground reference plane
The ground reference plane shall be located under the test table. It shall project beyond the EUT or coupling
plane by at least 0,5m on all sides and shall be connected to the protective grounding system.
The horizontal coupling plane on the test table has to be connected to the ground reference plane by 2x470 kΩ
resistors.
- Test generator
The test generator shall be located on the ground reference plane and must be well connected .
Important: The ESD simulator shall not be located on the test table (on the horizontal coupling plane).
The 2m long earth cable of the discharge unit shall be connected as well to the ground reference plane and not to
the horizontal coupling plane.
P18
EUT
UCS500
Attention
In case that the ESD generator is located also on the test table, it is part of the test set-
up and will be automatically tested together with every EUT. Such long duration ESD
tests will alter built in semiconductors and in dependence to the test time may destroy the
integrated circuits.
Therefore the operator has to take care to the correct test set-up.