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4.3 RADIATED DISTURBANCE MEASUREMENT 

4.3.1 LIMITS OF RADIATED DISTURBANCE MEASUREMENT (at 3 m distance) 
 

Frequency 

Limit values(dB(μV/m)) 

Equipment type 

Source 

MHz 

Quasi-peak 

Local oscillator

≤1000 

Fundamental 57

a

 

 

30 to 300 

Harmonics 

52 

 

300 to 1000 

Harmonics 

56 

Other 

30 to 230 

 

40 

Television receivers, 

video recorders and PC 

tuner cards 

 

230 to 1000 

 

47 

Other 

30 to 230 

 

40 

 

230 to 1000 

 

47 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Television and sound 

receivers for broadcast 

satellite transmissions 

(except outdoor units). 

 

Infrared remote control 

units and 

 

Infrared headphone 

systems 

 

 

 

 

Local oscillator

≤1000 

Fundamental 60 

 

30 to 300 

Harmonics 

52 

 

300 to 1000 

Harmonics 

56 

Other 

30 to 230 

 

40 

Frequency modulation 

sound receiver and PC 

tuner cards 

 

230 to 1000 

 

47 

a

 In Japan: 57 dB(μV/m) is relaxed to 66 dB(μV/m) for operating channels <300 

MHz and to 70 dB(μV/m) for operating channels >300 MHz. 

 

 Notes: 
 

(1) For car radio receivers and for LW, MW and SW AM broadcast receivers no radiation 

limits apply. 

 

 

LIMITS OF RADIATED POWER OF TUNER UNITS OF DIRECT TO HOME SATELLITE 
RECEINERS 

 

Equipment type 

Source 

Frequency 

MHz 

Limit values 

dB(pW) 

1 to 3 

Fundamental   57 

Television and sound 

receivers for broadcast 

satellite transmissions: 

tuner units 

Local oscillator 

1 to 3 

Harmonics     57 

 

 
 
 

 

 

 

 
 
 

 

LIMITS OF RADIATED POWER OF OUTDOOR UNITS OF DIRECT TO HOME STELLITE 
RECEIVERS 

 

Equipment type 

Source 

Frequency 

GHz 

Limit values 

dB(pW) 

Outdoor units of direct 
to home satellite 
receivers 

Local oscillator 
leakage radiated 
from the antenna 
within ±7° of the 
main beam axis 

a

 

0.9 to 18 

Fundamental   30

 

Equivalent radiated 

power from outdoor 

unit including the 

local oscillator 

leakage 

b

 

1 to 2.5 

2.5 to 18 

43
57

a

 The direct measurement is carried out according to 5.9. When the reflector of the 

parabolic antenna cannot be removed, the indirect measurement according to 5.8 is 
carried out. In that case, the antenna gain shall be taken into account. 
 

b

 Measurement of the equivalent radiated power shall be in accordance with 5.8. No 

requirements within ±7° off the main beam axis of the antenna. 

 

 
 

4.3.2 MEASUREMENT INSTRUMENTS LIST 

   

Item  Kind of Equipment 

Manufacturer 

Type No. 

Serial No. 

Calibrated until 

1 

Antenna 

Schwarzbeck 

VULB 9160

9160-3060 

Jun .30.2011 

2 Amplifier 

HP 

8447D 

1937A02847 

May.26.2011 

3 Test 

Receiver 

R&S 

ESCI 

100382  May.26.2011 

4 Test 

Cable 

N/A 

C-05_OS01

N/A 

Jul.08.2011 

5 Controller 

CT 

SC100  N/A 

N/A 

 

  Remark: ” N/A” denotes No Model Name / Serial No. and No Calibration specified. 

 

Attenuation Auto 

Start ~ Stop Frequency 

9kHz~150kHz / RB 200Hz for QP 

Start ~ Stop Frequency 

150kHz~30MHz / RB 9kHz for QP 

Start ~ Stop Frequency 

30MHz~1000MHz / RB 120kHz for QP 

 

 

 

 

 
 

4.3.3 TEST PROCEDURE 

a. The measuring distance of at 3 m shall be used for measurements at frequency up to 1GHz. 

For frequencies above 1GHz, any suitable measuring distance may be used. 

b. The EUT was placed on the top of a rotating table 0.8 meters above the ground at a 3 meter 

semi-anechoic chamber. The table was rotated 360 degrees to determine the position of the 
highest radiation. 

c. The height of the equipment or of the substitution antenna shall be 0.8 m; the height of the test 

antenna shall vary between 1 m to 4 m. Both horizontal and vertical polarizations of the 
antenna are set to make the measurement.   

d. The initial step in collecting conducted emission data is a spectrum analyzer peak detector 

mode pre-scanning the measurement frequency range. Significant peaks are then marked and 
then Quasi Peak detector mode re-measured.     

e. If the Peak Mode measured value compliance with and lower than Quasi Peak Mode Limit, the 

EUT shall be deemed to meet QP Limits and then no additional QP Mode measurement 
performed. 

f. For the actual test configuration, please refer to the related Item –Block Diagram of system 

tested (please refer to 3.3). 

Note: 

1. The resolution bandwidth and video bandwidth of test receiver/spectrum analyzer is 120kHz 

for Quasi-peak detection (QP) at frequency below 1GHz. 

 

4.3.4 DEVIATION FROM TEST STANDARD 
No deviation   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
4.3.5 TEST SETUP-SEMI-ANECHOIC CHAMBER 
 
 
 

 

 
 
4.3.6 BLOCK DIAGRAM OF TEST SETUP-OS 
N/A 

 

 

4.3.7 EUT OPERATING CONDITIONS 
The EUT tested system was configured as the statements of 4.1.7  Unless otherwise a special 
operating condition is specified in the follows during the testing.