DRIVE AND PLAY 2 (serv.man3) - Harman Kardon Car Audio EMC - CB Certificate (repair manual). Page 13

 

 

Report No. 078214R-RFCEP02V01

 

 

 

 

Page : 13 of 48 

 

Version:1.0 

 

 

The EUT and simulators are connected to the main power through a line impedance stabilization 

network (L.I.S.N.). This provides a 50 ohm /50uH coupling impedance for the measuring equipment. 
The peripheral devices are also connected to the main power through a LISN that provides a 50ohm 
/50uH coupling impedance with 50ohm termination. (Please refers to the block diagram of the test 
setup and photographs.) 

Both sides of AC line are checked for maximum conducted interference. In order to find the maximum 
emission, the relative positions of equipment and all of the interface cables must be changed according 
to ETSI EN 301 489-1:V1.6.1 (2005-09) on conducted measurement. 
The bandwidth of the field strength meter (R & S Test Receiver ESCS 30) is set at 9kHz. 

The mains voltage shall be supplied to the EUT via the LISN when the measurement of 

telecommunication port is performed. The common mode disturbances at the telecommunication port 
shall be connected to the ISN, which is 150ohm impedance. Both alternative cables are tested related to 
the LCL requested. The measurement range is from 150kHz to 30MHz. The bandwidth of measurement 
is set to 9kHz. The 60dB LCL ISN is used for cat. 5 cable, 50dB LCL ISN is used for cat. 3 and 80dB 
LCL is wed for alternative one. 

According to ETSI EN 301 489-1:V1.6.1 (2005-09) 
           EN 55022:1998+A1: 2000+A2: 2003 

±

 2.26 dB 

The emission from the EUT was below the specified limits. The worst-case emissions are shown in 
section 12. The acceptance criterion was met and the EUT passed the test.