SB 300 (serv.man6) - JBL Audio EMC - CB Certificate (repair manual). Page 10

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Neutron Engineering Inc. 
 
 
 
 
 
 
 
 
Report No.: NEI-EMC-1-1009C113                                                                                                          Page 10 of 97
 
 
3.2 DESCRIPTION OF TEST MODES   
 
To investigate the maximum EMI emission characteristics generated from EUT, the test 
system was pre-scanning tested base on the consideration of following EUT operation mode 
or test configuration mode which possible have effect on EMI emission level. Each of these 
EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated 
respectively. 
 
Pretest Mode 
Description 
MODE1 
AUX IN 
MODE2 
Optical IN 
  
 
The EUT system operated these modes were found to be the worst case during the 
pre-scanning test as Following: 
 
 
For Mains Terminal Disturbance Voltage Test 
Final Test Mode 
Description 
MODE1 
AUX IN 
MODE2 
Optical IN 
 
 
 
For Disturbance Power Test Test 
Final Test Mode 
Description 
MODE1 
AUX IN 
MODE2 
Optical IN 
 
 
 
For Harmonic and Flicker Test 
Final Test Mode 
Description 
MODE 1 
AUX IN 
 
 
 
For EMS Test 
Final Test Mode 
Description 
MODE1 
AUX IN 
MODE2 
Optical IN 
 
 
 
For immunity Against RFI Voltages (S2a) 
Interference Signal: Mains / Speaker Lch 1 / Speaker Rch 1 / Audio in / AUX IN 1 
MODE1 
AUX IN 
MODE2 
Optical IN 
 
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