DPR 1005 (serv.man12) - Harman Kardon Audio EMC - CB Certificate (repair manual). Page 8

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2000 Nemko Korea EMC Lab.            
WOORI Technology Inc.
 
FCC ID: RO3DPR1005 
Page 8 of 53 
Test Report No.: NK2EE319.FCC 
FCC Certification
 
 
 
Radiated Emissions 
 
Preliminary measurement were made indoor at 1 meter using broad band antennas, broadband 
amplifier, and spectrum analyzer to determine the frequency producing the maximum EME. 
Appropriate precaution was taken to ensure that all EME from the EUT were maximized and 
investigated. The system configuration, clock speed, mode of operation or video resolution, 
turntable azimuth with respect to the antenna was note for each frequency found. 
The spectrum was scanned from 30 to 1000MHz using Biconical log Antenna (ARA, LPB-2520/A). 
Above 1GHz, Doppels Teg Horn antenna (EMCO, DAA-37121:upto 1~18GHz) was used. 
Final Measurements were made outdoors at 3 or 10m test range using Logbicon Super 
Antenna (Schwarzbeck, VULB9166) or Doppels Teg Horn antenna.(EMCO, DAA-37121) 
The test equipment was placed on a wooden table. 
Sufficient time for the EUT, support equipment, and test equipment was allowed in order for them 
to warm up to their normal operating condition. 
Each frequency found during pre-scan measurements was reexamined and investigated using 
EMI test receiver.(ESCS30) 
The detector function was set to CISPR quasi-peak mode and the bandwidth of the receiver was 
set to 120KHz or 1MHz depending on the frequency or type of signal. 
The half wave dipole antenna was tuned to the frequency found during preliminary radiated 
measurements. 
The EUT support equipment and interconnecting cables were re configured to the setup 
producing the maximum emission for the frequency and were placed on top of a 0.8m high non- 
metallic 1.0X 1.5-meter table. 
The EUT, support equipment and interconnecting cables were re-arranged and manipulated to 
maximize each EME emission. 
The turn table containing the system was rotated; the antenna height was varied 1 to 4meter and 
stopped at the azimuth or height producing the maximum emission Each emission was 
maximized by: switching power lines; varying the mode of operation or resolution; clock or data 
exchange speed; scrolling H pattern to the EUT and of support equipment, and powering the 
monitor from the floor mounted outlet-box and computer aux AC outlet, if applicable; which ever 
determined the worst case emission. 
Each EME reported was calibrated using the R/S signal generator. 
 
 
                                         
      10.0m                                                    3.0m 
 
         
1.8 m                                                                                                                                                  1.5m
 
 
                                                                                                         
 1.0m
 
 
                                                                             
20 m
 
                    Fig. 3. Dimensions of Outdoor Test Site 
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