DOWNLOAD JBL CINEMA SOUND 3 (serv.man2) Service Manual ↓ Size: 1.98 MB | Pages: 95 in PDF or view online for FREE

Model
CINEMA SOUND 3 (serv.man2)
Pages
95
Size
1.98 MB
Type
PDF
Document
EMC - CB Certificate
Brand
Device
Audio
File
cinema-sound-3-sm2.pdf
Date

JBL CINEMA SOUND 3 (serv.man2) EMC - CB Certificate ▷ View online

 
 
Report No. JSH006110139-001 
Page 64 of 94  
16. Electromagnetic field susceptibility  
 
Test result 
Pass 
 
16.1 Severity Level and Performance Criterion 
16.1.1 Test level 
 
Level 
Test field strength V/m 
 
 
 
 
10 
 
Special 
 
Note: 1. X is an open test level, this level may be given in the product specification. 
          2. The gray row is the selected test level. 
 
16.1.2 Performance Criterion   
 
   Performance 
criterion 
 
 
 
Report No. JSH006110139-001 
Page 65 of 94  
16.2 Block diagram of test setup 
 
 
 
16.3 Test Setup and Test Procedure 
 
 
16.3.1 Test setup 
 
 
The test was conducted in an anechoic chamber which is 7m in length, 5m in width and 3m in 
height   to  maintain a uniform field of sufficient dimensions with respect to the EUT, and also in 
order to  comply with various national and international laws prohibiting interference to radio 
communications. 
  
 
 
For the table top EUT, the equipment is placed in the test facility on a non-conducting table 
0.8m high. 
 
For the floor standing EUT, the equipment is placed in the test facility on a non-conducting 
support 0.1m high. 
 
The EUT was placed on the uniform calibrated plane which is 3V/m EM field. 
 
 
Unshielded parallel wire was used during the test. 
 
 
 
Wire is left exposed to the electromagnetic field for a distance of 1m form the EUT. 
Power 
Antenn
a mask
   
       Table 
amplifier 
Signal 
EUT 
Field probe 
Field 
Optical 
Filte
 
 
Report No. JSH006110139-001 
Page 66 of 94  
16.3.2 Test procedure 
 
 
The EUT was arranged and connected according to its functional requirements 
 
Before testing, the intensity of the established field strength have been checked by placing the 
field sensor at a calibration grid point, and with the field generating antenna and cables in the same 
positions as used for the calibration, the forward power needed to give the calibrated field strength was 
measured. 
 
Spot checks was made at a number of calibration grid points over the frequency range 80MHz 
to 1000MHz, both polarizations was checked. 
 
After calibration, the EUT is initially placed with one face coincident with the calibration 
plane. 
 
The frequency range is swept from 80MHz to 1000MHz, with the signal 80% amplitude 
modulated  
with a 1 kHz sinewave, pausing to adjust the r.f. signal level.  
 
 
The dwell time at each frequency was 3s so as that the EUT to be exercised and be able to 
respond. 
 
The step size was 1% of the fundamental with linear interpolation between calibrated points. 
 
Test was performed with the generating antenna facing each of the four sides of the EUT. 
 
Both horizontal and vertical polarization was conducted. 
16.3.3 Photo for test set-up 
           none 
 
16.4 Test Protocol 
 
 Temperature 
 
 :23
°C  
 Relative 
Humidity :34% 
 
Test no.: 
 
 
Frequency 
(MHz) 
Polarization Test 
level 
V/m 
Exposed 
location 
Result Comment 

 
80-1000 
H & V 
Front side 
Pass 
 

 
80-1000 
H & V 
Back side 
Pass 
 
3 900 
H&V 
3 Front/Back 
Pass 
 
 
 
 
  
16.5 Additions, deviations and exclusions from standards 
 
 None
 
 
 
 
Report No. JSH006110139-001 
Page 67 of 94  
17. Surge Immunity Test 
 
Test result 
Pass 
 
17.1 Severity Level and Performance Criterion 
 
17.1.1 Test level 
Level 
Open-sircuit test voltage +/-10% 
kV 
1 0.5 
1.0 
2.0 
4 4.0 
  X* 
Special 
 
Notes: 1.”X” is an open class. This level can be specified in the product  Specification 
            2. The gray rows are the selected level. Class 2 is applied to Phase to Phase (L-N) 
               Class 3 is applied to Phase to PE (L-PE),(N-PE)
 
 
17.1.2 Performance Criterion
 
 
 
Performance criterion B.
 
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