DOWNLOAD JBL ON STAGE III IIIP (serv.man6) Service Manual ↓ Size: 1.89 MB | Pages: 66 in PDF or view online for FREE

 

Applicant 

: 

Harman Multimedia DBA Harman 
Motive Inc. 

Test Date 

: 

EUT 

: 

Computer Speaker System 

Temperature 

: 

℃

M/N 

: 

jbl on stage lll 

Humidity 

: 

％

Test Engineer 

Shelle Criterion 

100.6KPa 

± 

± 

± 

± 

 

 

 

 

 

 

 

 

 

 

 
 
 
 
 

 

12.1.Test Equipments 

Item Equipment 

Manufacturer Model No. 

Serial No.  Last Cal. 

Cal. 
Interval 

1.  

Signal 

Generator 

HP 

8648A 

3625U00573 

May 11, 07 1 Year 

2.  

Amplifier 

AR 

25A250A 

17028 

NCR 

NCR 

3.  

Amplifier 

AR 

500A100 

17034 

NCR 

NCR 

4.  

CDN 

FCC 

FCC-801-M2-25

47 

May 11, 07 1 Year 

5.  

CDN 

FCC 

FCC-801-M3-25

107 

May 11, 07 1 Year 

6.  

PC 

N/A 

486DX2 

N/A 

N/A 

N/A 

7.   RF Cable 

MIYAZAKI 5D-2W 

No.1/2 

Mar.05, 07 1/2 Year 

8.  

EM Injection Clamp 

FCC 

F-203I-23mm  403 

May 11, 07 1 Year 

9.  

CDN 

FCC 

F-203I-DCN-2
3mm 

152 

May 11, 07 1 Year 

12.2.Block Diagram of Test Setup 

12.2.1.Block Diagram of the EUT 

 
 
 
 
 
 
 
 
 
 
 
 
 
    (EUT: Computer Speaker System) 

12.2.2.Block Diagram of Test Setup 

 
 
 
 
 
 
 
 
 
 
 

 

Ground Reference Support 

EUT and 

Support System

 

CDN 

AC Mains 

Signal 

Generator 

Power 

Amplifier 

Personal Computer Control System 

0.1 m

PC  

AC Mains

 

Keyboard 

Mouse 

EUT 

AC Mains 

Monitor

a: Audio Cable 
b: USB Cable 
 : Core 

a

Adaptor

b

12.3.Test Standard 

EN55024: 1998+A1:2001+A2: 2003 (IEC61000-4-6:2006) 
(Severity Level 2 at 3V (r.m.s.) and frequency is from 0.15MHz to 80MHz) 

12.4.Severity Levels and Performance Criterion 

12.4.1.Severity level 

Level 

Voltage Level (e.m.f.) V

10. 1 

11. 3 

12. 10 

X Special 

12.4.2.Performance criterion: A 

12.5.EUT Configuration 

The configuration of EUT are listed in Section 3.5. 

12.6.Operating Condition of EUT 

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

replaced by Section 12.2. 

12.7.Test Procedure 

1)  Set up the EUT, CDN and test generators as shown on Section 12.2.2. 
2)  Let the EUT work in test mode and test it. 
3)  The EUT are placed on an insulating support 0.1m high above a ground 

reference plane. CDN (coupling and decoupling device) is placed on the ground 
plane about 0.3m from EUT. Cables between CDN and EUT are as short as 
possible, and their height above the ground reference plane shall be between 30 
and 50 mm (where possible). 

4)  The disturbance signal described below is injected to EUT through CDN. 
5)  The EUT operates within its operational mode(s) under intended climatic 

conditions after power on. 

6)  The frequency range is swept from 0.150MHz to 80MHz using 3V signal level, 

and with the disturbance signal 80% amplitude modulated with a 1kHz sine 
wave. 

7)  The rate of sweep shall not exceed 1.5*10

-3

decades/s. Where the frequency is 

swept incrementally, the step size shall not exceed 1% of the start and thereafter 
1% of the preceding frequency value. 

8)  Recording the EUT operating situation during compliance testing and decide the 

EUT immunity criterion. 

12.8.Test Results 

PASS. 
 
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 

Temperature 

: 

℃

M/N 

: 

jbl on stage lll 

Humidity 

: 

％

Power Supply 

: 

Test Mode 

: 

Test Engineer 

Jolly Criterion 

100.6KPa