JBL DUET II (serv.man5) EMC - CB Certificate ▷ View online
Ident. Nr.:
114383
Date:
2008-11-09
114383 EMC TRF.doc
page 13 of 38
5
Measurement of radiated emission
5.1 Standards
Product or product family standard
EN 55022:2006
Limit class
Class B
Basic standard
CISPR 16
Date of testing
2008-10-28
5.2 Measurement equipment
Equipment
Last Calibration
Type
Serial No
.
Manufacturer
EMI Test Receiver
January 25, 2008 ESI26
SB3436
Rohde & Schwarz
Bilog Antenna
January 25, 2008 CBL6112B SB3440
Chase
Semi-anechoic
chamber
chamber
January 25, 2008 9X6X6
SB3450/01 Albatross
Projects
5.3 Test set-up
The EUT has been tested according to the above-mentioned standard, as following:
The EUT was placed on the top of an insulating table 0.8 meters above the ground at a semi-
anechoic chamber. The table was rotated 360 degrees to determine the position of the highest
radiation. The EUT was set 3 meters away from the interference-receiving antenna, which was
mounted on the top of a variable-height antenna tower. The antenna is a broadband antenna, and its
height is varied from 1 to 4 meter above the ground to determine the maximum value of the field
strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement.
For each suspected emission, the EUT was arranged to its worst case and then the antenna was
tuned to the heights from 1 to 4 meters and the ratable table was turned from 0 degrees to 360
degrees to find the maximum reading. The test-receiver system was set to Peak Detector Function
and Specified Bandwidth with Maximum Hold Mode.
The EUT was placed on the top of an insulating table 0.8 meters above the ground at a semi-
anechoic chamber. The table was rotated 360 degrees to determine the position of the highest
radiation. The EUT was set 3 meters away from the interference-receiving antenna, which was
mounted on the top of a variable-height antenna tower. The antenna is a broadband antenna, and its
height is varied from 1 to 4 meter above the ground to determine the maximum value of the field
strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement.
For each suspected emission, the EUT was arranged to its worst case and then the antenna was
tuned to the heights from 1 to 4 meters and the ratable table was turned from 0 degrees to 360
degrees to find the maximum reading. The test-receiver system was set to Peak Detector Function
and Specified Bandwidth with Maximum Hold Mode.
If more details are necessary, e.g. because of wiring or auxiliary equipment, annex B with a photo or
a rough figure of the test set-up is attached.
a rough figure of the test set-up is attached.
The test has been performed as following:
1) Preview test; Peak; IF BW=120kHz, VBW=300kHz, Antenna: from 1 to 4m Turntable 0-360deg
2) Find frequencies with maximum emission:
Acceptance-analysis: Limit minus 10 dB
Peak-reduction: 10Peaks frequency range 30 MHz - 1000 MHz
3) Final test; Quasi-Peak; measuring time 1 s; at frequencies from step 2); Search maximum: vary
turntable and antenna position to find the maximum readings
4) If there are more than 10 peaks within the 10 dB margin a manual test with all settings is
necessary to find the maximum readings.
The EUT ‘s internal freq is lower than 108MHz,so RE test above 1GHz is not necessary .
5.4 Test result
Mode
Diagram
Remarks
Result
TM1
Diagram
004
H and V
Pass
Remark The emissions don’t show in table when too low against the limits, the test curves are
shown as below.
Ident. Nr.:
114383
Date:
2008-11-09
114383 EMC TRF.doc
page 14 of 38
5.5 Diagrams and tables
5.5.1 Diagram 004
EUT: Duet II
Manufacturer :
Operating Condition: Connect to PC (Play MP3)
Test Specification: Horizontal & Vertical
Comment: AC 230/50Hz
EUT: Duet II
Manufacturer :
Operating Condition: Connect to PC (Play MP3)
Test Specification: Horizontal & Vertical
Comment: AC 230/50Hz
Ident. Nr.:
114383
Date:
2008-11-09
114383 EMC TRF.doc
page 15 of 38
6 Harmonic
current
6.1 Standard
Basic standard
EN 61000-3-2:2006
Date of testing
2008-10-29
6.2 Measurement equipment
Equipment
Last Calibration
Type
Serial No
.
Manufacturer
Power
February 20, 2008 5001ix-CTS-400
SB2588
CI
Three Phase Harmonic
flicker test system
flicker test system
February 20, 2008 PACS-3
SB2588/01 CI
Power
February 20, 2008 5001ix-CTS-400-NO SB2588/02 CI
Power
February 20, 2008 5001ix-CTS-400-NO SB2588/03 CI
6.3 Test set-up
See annexe B
See annexe B
6.4 Classification of EUT
Devices with an active input power
of P <75 W
of P <75 W
Balanced three-phase equipment and all other
equipment, expect that stated in one of the
following classes
equipment, expect that stated in one of the
following classes
Class A
Portable tools
Class B
Lightning equipment, including dimming devices
Class C
Equipment having an input current with a "special
wave shape" as defined in figure 1 in the
standard and an active input power, P
wave shape" as defined in figure 1 in the
standard and an active input power, P
600 W
and motor driven with phase angle control
Class D
The power cord of the EUT is connected to the output of the test systems , Turn on the power of the
EUT and use the test system to test the harmonic current level.Observation time: 150s
EUT and use the test system to test the harmonic current level.Observation time: 150s
If Harmonic current less than 0.6% of the input current measured under the test condition ,or less
than 5mA, then whichever is greater,are disregarded.
than 5mA, then whichever is greater,are disregarded.
Ident. Nr.:
114383
Date:
2008-11-09
114383 EMC TRF.doc
page 16 of 38
6.5 Test results
Mode
Table
Remarks
Power
Result
TM1 005
230VAC
50Hz
8.5W
No limit *
*)
For devices with a rated power of 75 W or less, not being lighting equipment, no limit values are effective.
(EN61000-3-2)
(EN61000-3-2)
**)
For professionally used devices with a total rated power exceeding 1 kW no limit values are effective.
(EN61000-3-2)
(EN61000-3-2)
6.6 Table
6.6.1 Table 005
Harmonics – Class-A per Ed. 3.0 (2006)(Run time)
EUT: Duet II
Tested by: Test Operator
Start time: 3:51:49 PM
End time: 3:54:40 PM
Test duration (min): 2.5
Data file name: H-000849.cts_data
Comment: Connect to PC(Play MP3)
Customer: Customer
Test Result: Pass Source qualification: Normal
Current & voltage waveforms
Customer: Customer
Test Result: Pass Source qualification: Normal
Current & voltage waveforms
-0.9
-0.6
-0.3
0.0
0.3
0.6
0.9
-300
-200
-100
0
100
200
300
Current (Amps)
Voltage (Volts)
Limits
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