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DATE
DOCUMENT NAME
DOCUMENT #
PAGE
Janurary 5,2006
Harman Multimedia OnStage UD CE Test Report
2006 011114 CE AUS/NZ
26 of 72
3.9. Electrostatic Discharge Immunity: IEC 61000-4-2 (2001)
EN 55024 specifies the IEC 61000-4-2 Standard as the basic procedure for ESD testing. The standard
configuration as outlined in IEC 61000-4-2 (2001) is used. Tabletop devices are placed on an insulated mat
on a horizontal coupling plane. Air discharges and contact charges are made to the EUT on connectors and
conducting surfaces (as illustrated in the Test Results section of this Test Report). The discharges shall be
applied in two ways:
a) Contact Discharges to the conductive surfaces and to coupling planes:
The EUT shall be exposed to at least 200 discharges, 100 each at negative and positive polarity, at a
minimum of four test pints (a minimum of 50 discharges at each point). One of the test points shall be
subjected to at least 50 indirect discharges (contact) to the center of the front edge of the horizontal-
coupling plane. The remaining three test points shall each receive at least 50 direct contact discharges. If
no direct contact test points are available, then at least 200 indirect discharges shall be applied in the
indirect mode.
b) Air Discharge at slots and apertures, and insulating surfaces:
On those parts of the EUT where it is not possible to perform contact discharge testing, the equipment
should be investigated to identify user accessible points where breakdown may occur. This investigation
should be restricted to those areas normally handled by the user. A minimum of 10 single air discharges
of each polarity and test level shall be applied to the selected test point for each area.
For further information, please refer to the technical sections in the IEC 61000-4-2 (2001) publication in
addition to the test results section and photographs of the test set-up provided in this report.
For ESD tests, EN 55024 requires that the EUT meet at least performance Criterion B for discharges of up to
±8 kV air discharge and ±4 kV contact discharge.
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