AVR 235 (serv.man2) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 108

       

DIGITAL EMC CO., LTD.      

Page 12 of 19 

Test Report   

 

 

 
5.4 Electrical fast transient / burst 

 
RESULT :                                                                                                              Pass 
 

 
The immunity against fast transients was tested in accordance to EN55020:1994 +A11:1996 
+ A12,A13,A14:1999. on all lines which length may exceed 3m according to the 
manufacturers specification.  Test set-up with capacitive clamp and fast transient noise 
generator was according to EN61000-4-4: 1995+A1:2001. 
The EUT has been placed on a wooden table 0.8m above the reference ground plane. 
The reference ground plane exceeded the projected geometry of the EUT and the capacitive 
clamp by more than 20cm. The clamp has placed directly on the reference ground plane.   
The un-used signal connector of the clamp has been terminated with a 50Ω resistor. 

The distance between the EUT and all other conductive structures. Except the ground plane 
beneath the EUT was more than 0.5m. The distance between clamp and EUT was about 30cm. 

 
 

Severity level 

:  2 (AC Power port) 

Test voltage 

:  0.5, 1 (kV) 

Polarity : 

Negative/ 

positive 

Repetition  frequency 

:  5㎑ 

Performance criterion 

:  B 

 

5.4.2 List of Test and Measurement Instruments 

 

Electrical fast transient / burst 

BEST EMC 

BEST EMCV2.7 200122-043SC 

SCHAFFNER 

2003.09 

PERSONAL 

COMPUTER 

Emachines/AC 

50035 045 00056 

COMPUTOWN 

N/A 

EFT Clamp 

CDN8014 

17332 

SCHAFFNER 

N/A 

 

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