AVR 760 (serv.man2) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 114

 

8. Immunity to ambient electromagnetic fields (S3) 
 

 
      Operating environment; 
 Temperature 

22  ℃ 

 

Relative Humidity 

40 % 

 
      The EUT was placed on a non-metallic support,0.1 m above the lower conductor in the center 
    of the strip line. 
 
      The wanted signal was fed to all input terminals respectively.       
      The unwanted signal is fed to a matching network of the strip line. 
 
      The criterion concerning acceptable sound interference is a wanted to unwanted audio signal   
        ratio of  ≥40 dB at a wanted signal level of 50 mW. 
 
      The audio output power was measured with a 0.5 - 3 kHz band-pass filter. 
      The ground connection of the mains filter (M) was directly connected to the Jacky. 
 
      The audio analyzer was applied without a weighting filter. 
 
   The measurements were performed with test software TS9980 Ver.2.1 
 

 
     Radiated fields  : +/- 2 dB 
 

 
        The equipment does comply with the requirements. 
 
    For the measurement data, see Annex D