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Page 53 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

3.4 VOLTAGE FLUCTUATION AND FLICKERS 
 
3.4.1  LIMITS OF VOLTAGE FLUCTUATION AND FLICKERS 
 

 

 

3.4.1.1TEST PROCEDURE 
a. Harmonic Current Test: 
Test was performed according to the procedures specified in Clause 5.0 of IEC555-2 and/or 
Sub-clause 6.2 of IEC/EN 61000-3-2 depend on which standard adopted for compliance 
measurement. 
b. Fluctuation and Flickers Test: 
Tests was performed according to the Test Conditions/Assessment of Voltage Fluctuations 
specified in Clause 5.0/6.0 of IEC555-3 and/or Clause 6.0/4.0 of IEC/EN 61000-3-3 depend on 
which standard adopted for compliance measurement. 
c. All types of harmonic current and/or voltage fluctuation in this report are assessed by direct 
measurement using flicker-meter. 

  

 

3.4.1.2  EUT OPERATING CONDITIONS 
The EUT tested system was configured as the statements of 2.3 Unless otherwise a special 
operating condition is specified in the follows during the testing. 

  

 

3.4.1.3 TEST SETUP 

  

 

Page 54 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

3.4.2 TEST RESULTS 
 

EUT： 

AM/FM radio & speaker dock 
for ipod/iphone 

Model Name  ： 

Jbl on time™ micro 

Temperature： 

25 ℃ 

Relative Humidity： 45% 

Pressure： 

1010 hPa 

Test Date : 

2011-10-17 

Test Mode  ： 

Audio in 

Test Power ： 

DC 12V From Adapter AC 230V/50Hz 

 

M

M

a

a

x

x

i

i

m

m

u

u

m

m

 

 

F

F

l

l

i

i

c

c

k

k

e

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r

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Pst 0.028 

1.00 

PASS 

Plt 0.028 

0.65 

PASS 

dc [%] 

0.005 

3.30 

PASS 

dmax [%] 

0.251 

4.00 

PASS 

dt [s] 

0.000 

0.50 

PASS 

 

Page 55 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

 

4. EMC IMMUNITY TEST 

 

4.1  GENERAL PERFORMANCE CRITERIA 

  According to EN 55020 standard, the general performance criteria as following: 

 

 

The equipment shall continue to operate as intended without operator 
intervention. No degradation of performance or loss of function is allowed below 
a performance level specified by the manufacturer when the equipment is used 
as intended.   
The performance level may be replaced by a permissible loss of 
performance. If the minimum performance level or the permissible performance 
loss is not specified by the manufacturer, then either of these may be derived 
from the product description and documentation, and by what the user may 
reasonably expect from the equipment if used as intended. 

 

After the test, the equipment shall continue to operate as intended without 
operator intervention. No degradation of performance or loss of function is 
allowed, after the application of the phenomena below a performance level 
specified by the manufacturer, when the equipment is used as intended.   
The 
performance level may be replaced by a permissible loss of performance. 
During the test, degradation of performance is allowed. However, no change of 
operating state or stored data is allowed to persist after the test. 

 

Loss of function is allowed, provided the function is self-recoverable, or can be 
restored by the operation of the controls by the user in accordance with the 
manufacturer’s instructions. 
Functions, and/or information stored in non-volatile memory, or protected by a 
battery backup, shall not be lost. 

 

  

4.2  GENERAL PERFORMANCE CRITERIA TEST SETUP 

The EUT tested system was configured as the statements of 2.3 Unless otherwise a special 
operating condition is specified in the follows during the testing. 

  

Page 56 of 106                      Report No.: NTEK-2011NT1009314E 

 

 

 

4.3 ESD TESTING 

 

4.3.1 TEST SPECIFICATION 

 

 

Basic Standard: 

IEC/EN 61000-4-2 

Discharge Impedance: 

330 ohm / 150 pF 

Required Performance 

B 

Discharge Voltage: 

Air Discharge：2kV/4kV/8kV (Direct) 
Contact Discharge：2kV/4kV (Direct/Indirect) 

Polarity: 

Positive & Negative 

Number of Discharge: 

Air Discharge: min. 20 times at each test point 
Contact Discharge: min. 200 times in total 

Discharge Mode: 

Single Discharge 

Discharge Period: 

1 second minimum 

 
4.3.2 TEST PROCEDURE 
The test generator necessary to perform direct and indirect application of discharges to the EUT in 
the following manner: 

a. Contact discharge was applied to conductive surfaces and coupling planes of the EUT. 

During the test, it was performed with single discharges. For the single discharge time 
between successive single discharges was at least 1 second. The EUT shall be exposed to at 
least 200 discharges, 100 each at negative and positive polarity, at a minimum of four test 
points. One of the test points shall be subjected to at least 50 indirect discharges to the center 
of the front edge of the horizontal coupling plane. The remaining three test points shall each 
receive at least 50 direct contact discharges.   
If no direct contact test points are available, then at least 200 indirect discharges shall be 
applied in the indirect mode. Test shall be performed at a maximum repetition rate of one 
discharge per second. 
Vertical Coupling Plane (VCP): 
The coupling plane, of dimensions 0.5m x 0.5m, is placed parallel to, and positioned at a 
distance 0.1m from, the EUT, with the Discharge Electrode touching the coupling plane. 
The four faces of the EUT will be performed with electrostatic discharge. 
Horizontal Coupling Plane (HCP): 
The coupling plane is placed under to the EUT. The generator shall be positioned vertically at 
a distance of 0.1m from the EUT, with the Discharge Electrode touching the coupling plane. 
The four faces of the EUT will be performed with electrostatic discharge. 

b. Air discharges at insulation surfaces of the EUT. 

It was at least ten single discharges with positive and negative at the same selected point.