Harman Kardon DVD 23 (serv.man12) EMC - CB Certificate ▷ View online
Report No. JSH05110331-001
Page 16 of 64
3.4 Test Protocol
Temperature
:
20
°C
Relative Humidity
:
40 %
At mains terminal : Pass
Frequency
(MHz)
Quasi-peak
Disturbance level Permitted limit
dB(uV) dB(uV)
Average
Disturbance level Permitted limit
dB(uV) dB(uV)
0.16 * 65.46 * 55.46
0.24 * 62.10 * 52.10
0.55 * 56.00 * 46.00
1.00 * 56.00 * 46.00
1.40 * 56.00 * 46.00
2.00 * 56.00 * 46.00
3.50 * 56.00 * 46.00
6.00 * 60.00 * 50.00
10.00
* 60.00 * 50.00
22.00
* 60.00 * 50.00
30.00
* 60.00 * 50.00
Note: * : the emission level 10dB lower than the relevant limit.
** : According to the standard EN55013, if the limits for the average detector are met
when using Quasi-peak detector, then the limits for the measurements with the
average detector are considered to be met.
average detector are considered to be met.
At antenna terminal : NA
Frequency (MHz)
Disturbance level
dB(
µV)
Permitted limit
dB(
µV)
263.15/Fundamental(<=1000)
46
Harmonics(30-950)
46
1020.5/Harmonics(950-2150)
54
Other(30-2150)
46
Note: * means the emission level 6dB lower than the relevant limit.
At RF output : NA
At RF output : NA
Frequency (MHz)
Disturbance level
dB(
µV)
Permitted limit
dB(
µV)
Harmonics
Harmonics
Other
Other
Report No. JSH05110331-001
Page 17 of 64
3.5 Test curve
3.6 Measurement Uncertainty
The measurement uncertainty describes the overall uncertainty of the given measured value
during the operation of the EUT.
Measurement uncertainty is calculated in accordance with CISPR 16-4: 2002.
Measurement uncertainty of mains terminal disturbance voltage :
± 3.6dB
The measurement uncertainty is given with a confidence of 95%, k=2.
3.7 Additions, Deviations and Exclusions from Standards
None.
Report No. JSH05110331-001
Page 18 of 64
4. Continuous Disturbance Power
Test result:
Pass
4.1 Disturbance Power Limits for the frequency range 30MHz to 300MHz
Frequency (MHz)
Quasi-peak
dB(pW)
Average
dB (pW)
30 to 300
45 to 55*
35 to 45*
Note: 1. * means the limit increasing linearly with the frequency.
2. If the limit for the measurement with the average detector is met when using a receiver
with a quasi-peak detector, the equipment under test shall be deemed to meet both limits
and the measurement with the receiver with average detector need not be carried out.
Report No. JSH05110331-001
Page 19 of 64
4.2 Block Diagram of Test Setup
Note:
: power line
:
signal
lime
4.3 Test Setup and Test Procedure
The disturbance power was measured with the EUT in a shielded room.
The EUT was placed on a non-metallic table at least 0.4m from other metallic surface and the
mains lead of EUT was extended to about 6m long. The absorbing clamp was moved along the lead to
obtain maximum disturbance.
obtain maximum disturbance.
The EUT was set to achieve the maximum emission level, and for each point which appears a
relevant high emission level, the absorbing clamp was moved around the lead to get the maximum
disturbance value.
disturbance value.
The bandwidth of test receiver was set at 120kHz.
The frequency range from 30MHz to 300MHz was checked.
Amplitude measurements were performed with a quasi-peak detector and, if necessary, with an
average detector.
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
Mains
Absorber
(ferrite rings)
(ferrite rings)
Current
transformer
transformer
Absorber
(ferrite rings)
(ferrite rings)
E U T
Transform
The transformer to provide
a stable voltage to the EUT
during the test.
a stable voltage to the EUT
during the test.
Radio
noise meter
noise meter
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