Harman Kardon DVD 22 (serv.man2) EMC - CB Certificate ▷ View online
Test report no. JSH0311046-001
Page 8 of 19
6. DISTURBANCE VOLTAGE AT ANTENNA TERMINAL
6.1 Test result
Pass Fail Not applicable
6.2 Operating environment
Temperature: °C
Relative Humidity: %
6.3 Test set-up and test procedure
1. EUT
2. Matching network
3. Balun
4. Combining network
5. Measuring receiver
6. Auxiliary signal generator
The measurement was proceeded in a shielded room.
The antenna terminals of the equipment under test and the auxiliary signal generator were connected to
the measuring receiver by means of coaxial cables and a resistive combining network having a
minimum attenuation of 6 dB .
The impedance as seen from the equipment under test was equal to the nominal antenna input
impedance for which the equipment under test has been designed (75
Ω).
The output level of the auxiliary signal generator was set to give 70dB(uV) at the input of the
equipment under test and the signal was an unmodulated carrier.
6.4 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%
equipment under test and the signal was an unmodulated carrier.
6.4 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%
1
2
4
2
2
5
6
Test report no. JSH0311046-001
Page 9 of 19
6.5 Test instrumentation
Equipment Manu. Type Serial no.
Equipment Manu. Type Serial no.
Test
site
shielded
room
Measurement receiver R&S ESCS 30
TV Signal generator
PM 5518-TX
R&S= Rohde & Schwarz
6.6 Test protocol
FM Mode
Equipment type
6.6 Test protocol
FM Mode
Equipment type
Source
Frequency (MHz) Limit value
dB(uV/m)
Measured Data
dB(uV/m)
dB(uV/m)
Fundamental 54
30-300 50
Local oscillator
300-1000 52
Frequency
modulation sound
receiver
modulation sound
receiver
Other 300-1000
46
Note: “*” means the disturbance voltage at antenna terminal 6dB less than the limit.
Test report no. JSH0311046-001
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
Test report no. JSH0311046-001
Page 11 of 19
7.5 Test instrumentation
Equipment Manu. Type Serial no.
Test
site
shielded
room
Measurement receiver R&S ESCS 30
Absorbing clamp R&S MDS 21
R&S= Rohde & Schwarz
7.6 Test protocol
7.6 Test protocol
Frequency
/MHz
Quasi-peak
Disturbance Permitted
level limit
/dB(pW) /dB(pW)
level limit
/dB(pW) /dB(pW)
Average
Disturbance Permitted
level limit
/dB(pW) /dB(pW)
level limit
/dB(pW) /dB(pW)
30,00
*
45.00
*
35.00
45,00
*
45.56
*
35.56
65,00
*
46.30
*
36.30
90,00
*
47.22
*
37.22
150,00
*
49.44
*
39.44
180,00
*
50.56
*
40.56
220,00
*
52.04
*
42.04
300,00
*
55.00
*
45.00
Notes: * means the disturbance power level 10dB lower than limit.
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