SPARK (serv.man5) - JBL Audio EMC - CB Certificate (repair manual). Page 58

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Report No.: EM201300221-5                     Application No.:  ZJ00028648                         Page 58 of 68 
 
FCC ID: 
APISPARK  
emission level in the preliminary test. The Analyzer / Receiver scanned from 30MHz to 1000MHz. 
Emissions were scanned and measured rotating the EUT to 360 degrees, varying cable placement 
and positioning the antenna 1 to 4 meters above the ground plane, in both the vertical and the 
horizontal polarization, to maximize the emission reading level. Record at least six highest 
emissions. Emission frequency, amplitude, antenna position, polarization and turntable position 
were recorded into a computer in which correction factors were used to calculate the emission level 
and compare reading to the applicable limit and only QP reading is presented. The test data of the 
worst-case condition(s) was recorded. 
Procedure of Final Test  
EUT and support equipment were set up on the test bench as per the configuration with highest 
emission level in the preliminary test. A scan was taken on both power lines, recording at least the 
six highest emissions. Emission frequency and amplitude were recorded into a computer in which 
correction factors were used to calculate the emission level and compare reading to the applicable 
limit. The test data of the worst-case condition(s) was recorded. 
Below 1GHz Set the spectrum analyzer: RBW =100KHz VBW >= RBW , Span = enough to captch the trace. 
Sweep = auto; Detector Function = Peak. Trace = Max,hold. 
Above 1GHz Set the spectrum analyzer: RBW =1MHz VBW >= RBW , Span = enough to captch the trace. Sweep 
= auto; Detector Function = Peak. Trace = Max,hold. 
Pre-test for normal mode and EDR mode, to find the EDR is the worst case. 
The worst case emissions were reported. 
 
4.10.3 TEST SETUP 
 
 Figure 1. 9KHz to 30MHz radiated emissions test configuration
 
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