ON BEAT RUMBLE (serv.man3) - JBL Audio EMC - CB Certificate (repair manual). Page 29

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Report No.:
 
EM201200813-7 
                       
Application No.:
 
ZJ00024740  
                  
Page 29 of 47
 
 
 
5.3 ELECTROSTATIC DISCHARGE (ESD) 
5.3.1 TEST SPECIFICATION 
Basic Standard 
EN 61000-4-2:
 
2009 
Discharge Impedance 
330 ohm / 150 pF 
Discharge Voltage 
Air Discharge       : 8 kV; 
Contact Discharge: 4 kV  
Polarity 
Positive & Negative 
Number of Discharge 
Minimum 10 times at each test point 
Discharge Mode 
Single Discharge 
1 second minimum 
5.3.2 TEST PROCEDURE  
a) The EUT was located 0.1 m minimum from all side of the HCP (dimensions 1.6m * 0.8m). 
b) The support units were located another table 30 cm away from the EUT, but direct support unit 
was/were located at same location as EUT on the HCP and keep at a distance of 10 cm with EUT. 
c) The time interval between two successive single discharges was at least 1 second. 
d) Contact discharges were applied to the non-insulating coating, with the pointed tip of the generator 
penetrating the coating and contacting the conducting substrate. 
e) Air discharges were applied with the round discharge tip of the discharge electrode approaching the 
EUT as fast as possible (without causing mechanical damage) to touch the EUT. After each 
discharge, the ESD generator was removed from the EUT and re-triggered for a new single 
discharge. The test was repeated until all discharges were complete. 
f) At least ten single discharges (in the most sensitive polarity) were applied at the front edge of each 
HCP opposite the center point of each unit of the EUT and 0.1 meters from the front of the  
EUT. The long axis of the discharge electrode was in the plane of the HCP and perpendicular to its 
front edge during the discharge. 
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