ON STAGE 200ID (serv.man3) - JBL Audio EMC - CB Certificate (repair manual). Page 30

 

98323__EMC_TRF 

page 30 of 46 

Basic standard 

EN 61000-4-2:1995/A1：1998/A2：2001 

Date of testing 

Performance criteria: 

 

.  

  ESD tester  

September 26, 2007 

ESD 30C 

SB4076 

EMTEST  

See annex B 

The EUT shall be exposed to at least 200 discharges , 100 each at negative and positive polarity ,at a 
min of four test points (a min of 50 discharges at each point),One of the test points shall be subjected 
to at least 50 indirect discharges(contact) to the centre of the front edge of the hori coupling plane,The 
remaining three 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.Test shall 
be performed at a max repetition of one discharge per second. 

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; A min of 10 
single air discharges shall be applied to the selected test point for each such area. 

 
Direct application of discharges to the EUT: 
Contact discharge was applied only to conductive surfaces of the EUT. 
Air discharges were applied only to non-conductive surfaces of the EUT. 
During the test, it was performed with single discharges. For the single discharge time between 
successive single discharges will be keep longer 1 second. It was at least ten single discharges with 
positive and negative at the same selected point. 
 
Indirect application of discharges to the EUT: 
Vertical Coupling Plane (VCP): 
The coupling plane, of dimensions 0.5m x 0.5m, is placed parallel to, and positioned at a distance 0.1m 
from, the EUT, with the Discharge Electrode touching the coupling plane. 
The four faces of the EUT will be performed with electrostatic discharge. It was at least ten single 
discharges with positive and negative at the same selected point. 
Horizontal Coupling Plane (HCP): 
The coupling plane is placed under to the EUT. The generator shall be positioned vertically at a 
distance of 0.1m from the EUT, with the Discharge Electrode touching the coupling plane. 
The four faces of the EUT will be performed with electrostatic discharge. It was at least ten single 
discharges with positive and negative at the same selected point.