AVR 151 (serv.man3) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 11

Reference No. : 54121302C                                                                                                                  Page 11/45

 

◀  Anam EMC Test Laboratory  ▶

 

 
7. ANTENNA TERMINAL DISTURBANCE VOLTAGE IN THE   
  FREQUENCY RANGE 30MHz TO 1,000MHz

 

 
  7.1. Operating environment 

Temperature 

: 17℃ 

Relative humidity  : 41% 

 
    7.2. Test set-up and procedure 

Measurements were performed in the frequency range 30 ㎒ to 1,000 ㎒. 

 

The level of the test signal, which was connected to the receiver through a 
combining network, was set to give 70 ㏈㎶  at the input of the EUT. 
The signal was an unmodulated carrier. 
Disturbance voltage due to the local oscillator, it’s fundamental and harmonic 
frequencies was measured with the receiver tuned to a selected number of FM 
sound broadcast channels. Disturbance voltage due to all other sources was 
measured with the receiver tuned to the channel 98.3 ㎒ respectively. 

 
   7.3. Measurement uncertainty 
 

Antenna terminal disturbance voltage, Quasi-peak detection:  ±2.0 ㏈ 

 

The measurement uncertainty describes the overall uncertainty of the given 

 

measured value during the operation of the EUT in the above-mentioned way. 

 

7.4. Test instrumentation 

Equipment 

Manufacturer 

Type No. 

Serial No. 

Measurement 
                      Receiver 

R & S 

ESCI 

100348 

 

 

 

Signal Generator 

Anritsu 

MG3632A 

MT79870 

Combining network 

Municom 

MCL ZFSC-2-11 
N 

942604 

Matching pad 
(50~75Ω) 

R & S 

RAM 358 

837254/004 

* R & S: Rohde & Schwarz