Harman Kardon DVD 22 (serv.man2) EMC - CB Certificate ▷ View online
Test report no. JSH0311046-001
Page 13 of 21
6.6 Test protocol
PASS
7. Immunity requirements for a.c. mains power connectors
7.1 Test result
Pass Fail Not Applicable
7.2 Operating environment
Temperature: 22
°C
Relative Humidity: 55%
7.3 Test set-up
The wanted test signal is supplied by generators G1,G2,G3 and G4, via the respective connections A or
V or S or T and the unwanted signal is supplied by generator G5. Network RCi matches the RF
disturbance source to the input impedance of the relevant audio terminal and a similar network Rco is
used to match the output terminals. Mains stop filter MSF is used to inject the unwanted signal at the
mains terminal and acts as a stop filter for unwanted signals from the mains network.
The equipment under test is placed 0.1m above the centre of a metal ground plane of dimensions 2m by
1m. The mains lead shall be bundled to a length less than 0.3m and connected in the shortest possible
way to the mains stop filter MSF. The connection between the metal ground plane and the shield of the
RF cable at the audio input and output terminals shall be as short as possible.
The connecting cables are of the 50
7.3 Test set-up
The wanted test signal is supplied by generators G1,G2,G3 and G4, via the respective connections A or
V or S or T and the unwanted signal is supplied by generator G5. Network RCi matches the RF
disturbance source to the input impedance of the relevant audio terminal and a similar network Rco is
used to match the output terminals. Mains stop filter MSF is used to inject the unwanted signal at the
mains terminal and acts as a stop filter for unwanted signals from the mains network.
The equipment under test is placed 0.1m above the centre of a metal ground plane of dimensions 2m by
1m. The mains lead shall be bundled to a length less than 0.3m and connected in the shortest possible
way to the mains stop filter MSF. The connection between the metal ground plane and the shield of the
RF cable at the audio input and output terminals shall be as short as possible.
The connecting cables are of the 50
Ω coaxial type.
The unwanted signal was amplitude modulated with 1kHz at 80% depth, supplied by generator G5.
7.4 Performance Criterion : A
7.4 Performance Criterion : A
Test report no. JSH0311046-001
Page 14 of 21
7.5 Figure for test set up
Test report no. JSH0311046-001
Page 15 of 21
7.6 Test protocol
Frequency (MHz)
0.15-30
30-100
100-150
Result
Recorded level
[dB(uV)] (e.m.f.)
[dB(uV)] (e.m.f.)
>130 >120 >120
Pass
8. Immunity requirements for the enclosure port
8.1 Test result
Pass Fail Not Applicable
8.2 Operating environment
Temperature: 22
°C
Relative Humidity: 55%
8.3 Test set-up
8.3 Test set-up
The stripline was placed on non-metallic supports 0.8m from the floor, and the top conductor
plate was no closer than 0.8m from the ceiling.
The equipment under test is placed on a non-metallic support 0.1m high, in the centre of the stripline in
the same position as for normal home usage.
Connecting leads to the equipment under test are inserted through holes in the base conductor plate of
the stripline, the length of the leads inside the stripline is as short as possible and completely surrounded
by ferrite rings to attenuate induced currents.
The mains lead is bundled to a length less than 30cm.
Terminals of the equipment under test not used during the measurement are terminated with shielded
resistors matching the nominal terminal impedance.
The equipment under test is placed on a non-metallic support 0.1m high, in the centre of the stripline in
the same position as for normal home usage.
Connecting leads to the equipment under test are inserted through holes in the base conductor plate of
the stripline, the length of the leads inside the stripline is as short as possible and completely surrounded
by ferrite rings to attenuate induced currents.
The mains lead is bundled to a length less than 30cm.
Terminals of the equipment under test not used during the measurement are terminated with shielded
resistors matching the nominal terminal impedance.
Test report no. JSH0311046-001
Page 16 of 21
8.4 Test protocol
Frequency (MHz)
Level dB(uV/m)
Result
0.15-150 Margin
>10dB
PASS
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