Read Harman Kardon DVD 31 (serv.man12) EMC - CB Certificate online
Test report no. JSH0311243-001
Page 10 of 19
7.CONTINUOUS DISTURBANCE POWER
7.1 Test result
Pass Fail Not applicable
7.2 Operating environment
Temperature: 22
°C
Relative Humidify: 41 %
7.3 Test set-up and test procedure
The disturbance power has been measured with the EUT placed on a non-metallic table at least 0,4m
from other metallic objects and the main lead was extended to about 6 m long. The absorbing clamp
was placed around the lead and moved along the lead to obtain maximum disturbance.
Amplitude measurements were performed with a quasi-peak detector and, if required, with an average
detector.
7.4 Measurement uncertainty
Disturbance power, quasi-peak detection: + 2,0 dB
Disturbance power, average detection: + 2,0 dB
The measurement uncertainty described the overall uncertainty of the given measured value during
operation of the EUT in the above mentioned way.
Measurement uncertainty is calculated in accordance with WECC 19-1990.
The measurement uncertainty is given with a confidence of 95%
7.3 Test set-up and test procedure
The disturbance power has been measured with the EUT placed on a non-metallic table at least 0,4m
from other metallic objects and the main lead was extended to about 6 m long. The absorbing clamp
was placed around the lead and moved along the lead to obtain maximum disturbance.
Amplitude measurements were performed with a quasi-peak detector and, if required, with an average
detector.
7.4 Measurement uncertainty
Disturbance power, quasi-peak detection: + 2,0 dB
Disturbance power, average detection: + 2,0 dB
The measurement uncertainty described the overall uncertainty of the given measured value during
operation of the EUT in the above mentioned way.
Measurement uncertainty is calculated in accordance with WECC 19-1990.
The measurement uncertainty is given with a confidence of 95%
Absorbing clamp
moved over power
cord to obtain max.
reading o receiver
moved over power
cord to obtain max.
reading o receiver
Absorbing
clamp
clamp
Radio-noise meter
Mains
Absorber
(ferrite rings)
(ferrite rings)
Current
transformer
transformer
Absorber
(ferrite rings)
(ferrite rings)
Additional absorber used to avoid
interference from mains (a second
absorbing clamp may be used here)
interference from mains (a second
absorbing clamp may be used here)
EUT
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