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Reference No.: 54121302D

Page 8/32

8. Immunity to ambient electromagnetic fields (S3)

8.1 Test criteria  and test procedure

Operating environment;
Temperature         

: 17 ℃

Relative Humidity  

: 42 %

The EUT was placed on a non-metallic support by 0.1m above the lower 
conductor in the center of the stripline.
The wanted signal was fed to all input terminals respectively .The unwanted 
signal is fed to a matching network of the stripline.
The ground connection of the mains filter(M) was directly connected to the
jacky.
All unused input/output connections on the EUT were terminated and 
shielded with the proper resistance.
The power supply to the mains of the EUT was attached to the mains filter(M).
Ferrite rings for this test was required on all test cables inside the shielded 
room.

The measurement are performed with TS9980 

8.2 Measurement uncertainty

Radiated fields  : ± 2dB

8.3 Test result immunity from radiated fields.

The equipment does comply with the requirements.

For the measurement data, see annex D.

◀

 Anam EMC Test Laboratory ▶

Reference No.: 54121302D

Page 9/32

9. Screening effectiveness(S4)

9.1 Test criteria and test procedure for VHF band II receiver.

Operating environment;
Temperature         

: 17 ℃

Relative Humidity  

: 42 %

The equipment under test was placed on a non-metallic table of height 0.8m.
At the side of the antenna input terminal of the equipment under test, a 
non-metallic table of length 4m was placed at the same height to provide
for movement of the measuring device, an absorbing clamp. 
An RF signal generator is placed on a third table.

The equipment under test is connected to the generator, but not connected to 
the mains supply.
The signal from the generator is at the test frequency and unmodulated.

9.2 Measurement uncertainty

Screen effective : ± 2dB

9.3 Test results screen effective

The equipment does comply with the requirements.

For the measurement data, see annex E.

◀

 Anam EMC Test Laboratory ▶

Reference No.: 54121302D

Page 10/32

10. Test instrumentation

 

POWER METER(NRVS)

Rohde & Schwarz

101214

MATCHING PAD(RAM)

Rohde & Schwarz

100618

MATCHING PAD(RAM)

Rohde & Schwarz

100619

SIGNAL GENERATOR(SML03)

Rohde & Schwarz

102316

SIGNAL GENERATOR(SML03)

Rohde & Schwarz

102317

AUDIO ANALYZER(UPL)

Rohde & Schwarz

101230

LEVEL METER(URV35)

Rohde & Schwarz

100256

POWER SENSOR(URV5-Z4)

Rohde & Schwarz

100116

RF PROBE(URV5-Z7)

Rohde & Schwarz

100422

RC Net Work(8,300ohm/RCo)

Erika Fiedler

Mains Filter(MSF)

Erika Fiedler

Coupling Unit(A,M,L,SR)

Erika Fiedler

Matching Net Work(MN)

Erika Fiedler

Mains Filter(M)

Erika Fiedler

Loudspeaker Filter(BS)

Erika Fiedler

RC Net Work(RCi,RCo)

Erika Fiedler

◀

 Anam EMC Test Laboratory ▶

Equipment and Type

Manufacturer

Serial NO.

 

                            Reference No. : 54121302D Page 11/32 

                                              Annex A 

 Test:   Input  Immunity  S1  <AMP> 
 
 Test  Mode:       Amplifier  -  Stereo                Monitor:        Speaker 
 Operating  Mode:  FM                                S/N:            48.5  dB 
 Frequency:       87.600000  MHz                     AF  Level:       50.7  mW 
   
 Interf. Signal: Below FM, 050213-00265-001, 2/5/2013, 3:02:26PM 
 

 

80/20

70/30

60/40

50/50

40/60

30/70

20/80

10/90

0/100

S/N [dB] // Level [dB킮]

87.1M

87.2M

87.3M

87.4M

87.5M

Frequency [Hz]