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10.5.EUT Configuration 

The configuration of EUT are listed in Section 3.5. 

10.6.Operating Condition of EUT 

Same as Conducted Emission test which is listed in Section 3.6. except the test set up 
replaced by Section 10.2. 

10.7.Test Procedure 

The EUT and its simulators were placed on a the ground reference plane and were 
insulated from it by an wood support 0.1m + 0.01m thick. The ground reference 
plane was 1m*1m metallic sheet with 0.65mm minimum thickness. This reference 
ground plane was project beyond the EUT by at least 0.1m on all sides and the 
minimum distance between EUT and all other conductive structure, except the 
ground plane was more than 0.5m. All cables to the EUT was placed on the wood 
support, cables not subject to EFT/B was routed as far as possible from the cable 
under test to minimize the coupling between the cables. 

10.7.1.For input and AC power ports: 

The EUT was connected to the power mains by using a coupling device which 
couples the EFT interference signal to AC power lines. Both positive 
transients and negative transients of test voltage was applied during 
compliance test and the duration of the test can’t less than 2mins. 

10.7.2.For signal lines and control lines ports: 

It’s unnecessary to test. 

10.7.3.For DC input and DC output power ports: 

It’s unnecessary to test. 

10.8.Test Results 

 

The EUT was tested and all the test results are listed in next page. 

Applicant 

: 

Harman Multimedia DBA 
Harman Motive Inc. 

Test Date 

: 

EUT 

: 

Computer Speaker System 

: 

℃

M/N 

: 

jbl on stage lll 

Humidity 

: 

％

Test Voltage 

: 

Test Mode 

: 

Test Engineer 

Shelle Criterion 

100.6KPa 

 

 

11.1. Test  Equipments 

Item  Equipment  Manufacturer Model No. 

Serial No.  Last Cal. 

Cal. Interval

1.    Surge Tester  HAEFELY 

PSURGE4.1  083519-12 May 11, 07  1 Year 

11.2. Block Diagram of Test Setup 

11.2.1.Block Diagram of the EUT 

 
 
 
 
 
 
 
 
 
 
 
 
 

11.2.2.Surge Test Setup 

 

 
 
 
 
 
 
 
 

11.3.Test Standard 

EN 55024: 1998+A1: 2001+A2: 2003 (IEC 61000-4-5: 2001) 
(Severity Level : Line to Line was Level 2 at 1kV) 

0.8 m 

AC Mains 

EUT and 

Support system

 

AC Mains

Test 

Generator 

PC  

AC Mains

 

Keyboard 

Mouse 

EUT 

AC Mains 

Monitor

a: Audio Cable 
b: USB Cable 
 : Core 

a

Adaptor

b

 

11.4.Severity Levels and Performance Criterion 

11.4.1.Severity level 

Severity Level 

Open-Circuit Test Voltage 

kV 

1 
2 
3 
4 
* 

0.5 
1.0 
2.0 
4.0 

Special 

11.4.2.Performance criterion : B 

11.5.EUT Configuration 

The configuration of EUT are listed in Section 3.5. 

11.6.Operating Condition of EUT 

Same as Conducted Emission test which is listed in Section 3.6. except the test set up 
replaced by Section 11.2. 

11.7.Test Procedure 

1)  Set up the EUT and test generator as shown on Section 11.2.2. 
2)  For line to line coupling mode, provide a 1kV 1.2/50us voltage surge (at       

open-circuit condition) and 8/20us current surge to EUT selected points, and for 
active line / neutral line to ground are same except test level is 2kV. 

3)  At least 5 positive and 5 negative (polarity) tests with a maximum 1/min     

repetition rate are applied during test. 

4)  Different phase angles are done individually. 
5)  Record the EUT operating situation during compliance test and decide the EUT   

immunity criterion for above each test. 

11.8.Test Results 

PASS. 
 
The EUT was tested and all the test results are listed in next page.