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Page 25 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

 

EUT： 

AM/FM radio & speaker dock 
for ipod/iphone 

Model Name.  ： 

Jbl on time™ micro 

Temperature： 

26  ℃ 

Relative Humidity： 54% 

Pressure： 

1010hPa 

Test Date : 

2011-10-17 

Test Mode： 

Ipod Playing 

Phase : 

N 

Test Voltage  ：  DC 12V From Adapter AC 230V/50Hz 

 

 

 
 
 
 

Page 26 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

 

3.2 RADIATED EMISSION MEASUREMENT 

 

3.2.1  LIMITS OF DISTURBANCE VOLTAGE AT MAINS TERMINALS 
 

dBuV/m 

FREQUENCY (MHz)   

At 10m 

At 3m 

30 – 230     

30 

40 

230 – 1000 

37 

47 

 
3.2.2  LIMITS OF DISTURBANCE VOLTAGE AT THE ANTENNA TERMINALS 

Equipment type 

Source 

Frequency 

MHz 

Limit values 

dBuV  75ohm 

Quasi-peak note2 

Television receivers, video and PC 

tuner cards working in channels 

between 30 MHz and 1 GHz 

Local oscillator

 

 

Other 

≤1000 

30 to 950 

950 to 2150 

30 to 2150 

Fundamental    46 

Harmonics      46 

Harmonics      54 

46 

Television receivers for broadcast 

Satellite transmissions and tuner 

units note1 

Local oscillator

 

Other 

950 to 2150 

950 to 2150 

30 to 2150 

Fundamental    54 

Harmonics      54 

46 

Frequency modulation sound 

receivers and PC tuner cards 

Local oscillator

 

 

Other 

≤1000 

30 to 300 

300 to 1000 

30 to 1000 

Fundamental    54 

Harmonics      50 

Harmonics      52 

46 

Frequency modulation car radios 

Local oscillator

 

 

Other 

≤1000 

30 to 300 

300 to 1000 

30 to 1000 

Fundamental    66 

Harmonics      59 

Harmonics      52 

46 

Associated equipment with an RF 

input, e.g. video tape player, laser 

disc player 

Other 

30 to 2150 

46 

Note1: At frequencies above 1 GHz the peak detector is used. 

Note2: For tuner units, "antenna terminal" means "first intermediate frequency input terminal".

Note2:The limit values for receivers with nominal impedance other than 75 Ω are calculated 

according to the following formula: LZ = L75 + 10 log (Z/75) dB(μV) 

Note2:For AM broadcast receivers for LW, MW and SW no limits apply. 

3.2.3  LIMITS OF DISTURBANCE VOLTAGE AT RF OUTPUT TERMINALS 
 

MHz 

dB(μV) 75 Ω 

Equipment with RF video 

modulator (e.g. video 

recorders, camcorders and 

decoders) 

Wanted 

signal 

Other 

 

30 to 950 

950 to 2150

30 to 2150 

Carrier frequencies and sidebands 76

Harmonics  46 

Harmonics  54 

46 

Note1:At frequencies above 1 GHz the peak detector is used. 

 
 
3.2.4  LIMITS OF DISTURBANCE POWER 

Page 27 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

 

dB(pW) 

 

MHz 

 

Associated equipment 
(video recorders 
excluded) 

30 to 300 

45 to 55 

note1

 

35 to 45 

note 1

 

Note1: Increasing linearly with the frequency. 

 
 

 Notes: 
 

(1) The limit for radiated test was performed according to as following: 

CISPR 13. 

 

(2) The tighter limit applies at the band edges. 

 

(3)   Emission level (dBuV/m)=20log Emission level (uV/m). 

 

 

3.2.5 TEST PROCEDURE 

a. The measuring distance of at 10 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 10 meter 

open area test site. 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, above 1G Average detector mode will be 
instead.  

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

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

f. For the actual test configuration, please refer to the related Item –EUT Test Photos. 

 

 

Page 28 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

 

3.2.6 TEST SETUP 
(A) Radiated Emission Test Set-Up Frequency Below 1 GHz 
 

 

 
 
B) Radiated Emission Test Set-Up Frequency Above 1GHz