AUTHENTICS L8 (serv.man2) - JBL Audio EMC - CB Certificate (repair manual). Page 26

Report No.: EM201300650-1                         Application No.: ZJ00032008                       Page 26 of 42 
 

 

Frequency range 

Limit when operating 

Limit when in standby 

30 MHz to 1 GHz  

-36 dBm  

-57 dBm  

above 1 GHz to 12.75 GHz  

-30 dBm  

-47 dBm  

1.8 GHz to 1.9 GHz  

5.15 GHz to 5.3 GHz  

-47 dBm  

-47 dBm  

EUT operation status: 

Keep EUT on transmitting mode by the software provided by 
manufacturer. 
Pretest the EUT at different transmission rate and report show 
the worst case data. 

     

Test channel: 

802.11b/g 
Lowest channel: (2412MHz), Highest channel: (2472MHz) 

Test condition: 

Normal test conditions. 

Test equipment used: 

Refer to section 3.4 

Test procedure: 

1.  The EUT shall be performed at the highest power level at 

which the transmitter is intended to operate.and Interface 
cables, loads, and devices should be connected to at least 
one of each type of the interface ports of the EUT and, 
where practical, each cable shall be terminated in a device 
typical for its actual use. EUT shall be placed at the 1.5m 
support on the turntable. 

2.  The test antenna at a horizontal distance of 3 m .It shall be 

raised and lowered from 1m to 4m until a maximum signal 
level is detected by the measuring receiver. Then the 
turntable should be rotated through 360° in the horizontal 
plane, until the maximum signal level is detected by the 
measuring receiver. In both the vertical and the horizontal 
polarization. Record the reading level, antenna position, 
polarization and turntable position. 

3.  Remove the transmitter and replace it with a substitution 

antenna (the antenna should be half-wavelength for each 
frequency involved). The center of the substitution antenna 
should be approximately at the same location as the center 
of the transmitter. For frequencies of 80 MHz and above, the 
dipoles should have their arm lengths set for resonance at