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Unilab(Shanghai) Co.,Ltd.
Report No. : UL45520150619CE001
Page 14 of 23
b2. Vertical Coupling Plane (VCP): More than 50 single discharges were applied to the
center of one vertical edge of the coupling plane. The coupling plane, of dimensions 0.5 m x
0.5 m, was placed parallel to, and positioned at a distance of 0. m from the EUT. Discharges
were applied to the coupling plane, with this plane in sufficient different positions that all
sides of the EUT were completely illuminated.
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. Such points are tested using the air discharge method. The round discharge tip of the
discharge electrode was approached as fast as possible to touch the EUT. After each
discharge, the ESD simulator (discharge electrode) was removed from the EUT. The
simulator was then re-trigged for a new single discharge and applies more than 10 times on
each reselected point. This procedure was repeated until the air discharge completed.
4.4 RESULTS & PERFORMANCE
Discharge point：
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