JBL CINEMA SOUND 5 (serv.man2) EMC - CB Certificate ▷ View online
Report No. JSH006110138-001
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
1
1
2
3
3
10
X
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
A
Report No. JSH006110138-001
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.
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
a mask
Table
amplifier
Signal
EUT
Field probe
Field
Optical
Filte
Report No. JSH006110138-001
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.
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
location
Result Comment
1
80-1000
H & V
3
Front side
Pass
2
80-1000
H & V
3
Back side
Pass
3 900
H&V
3 Front/Back
Pass
16.5 Additions, deviations and exclusions from standards
None
Report No. JSH006110138-001
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
2
1.0
3
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)
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.
Click on the first or last page to see other CINEMA SOUND 5 (serv.man2) service manuals if exist.