JBL ON TOUR XT (serv.man5) EMC - CB Certificate ▷ View online
12/05/2006
Report Number: 3109671ATL-005
Issued:
Intertek
Measurement of immunity to induced voltages (EN 55020 - Sec. 5.7)
6.0
Signal to Noise Ratio
150.0K
15.1M
30.1M
45.1M
60.1M
75.1M
90.1M
105.0M
120.0M
135.0M
150.0M
Frequency
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0
10.0
No
is
e
rel
a
ti
v
e t
o
w
a
n
ted
s
ig
n
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B
Job Number: 3109671
Company: Harmon
Mode: Audio
Test Port: Audio In
Monitor Port: Speaker
Test Port: Audio In
Monitor Port: Speaker
EUT: - Portable Speaker System
M/N: - JBL On-Tour II
S/N: - Prototype
M/N: - JBL On-Tour II
S/N: - Prototype
SNR Limit (EN55020)
Noise from EUT
Noise from EUT
Scan plot audio in
Plot:
Page 13 of 27
EMC Report for Harman Consumer Group on the JBL On Tour II
12/05/2006
Report Number: 3109671ATL-005
Issued:
Intertek
Measurement of immunity to induced voltages (EN 55020 - Sec. 5.7)
6.0
Mode of
Operation
Lead
Tested
Test
Level
(of EN55020)
SNR prior
to test
dB
Lowest SNR
during test
dB
Judgement
Comments
AC Mains
Table 12
-62
-44.5
Pass
Audio In
Table 13
-62
-61.5
Pass
Audio
Data:
Page 14 of 27
EMC Report for Harman Consumer Group on the JBL On Tour II
12/05/2006
Report Number: 3109671ATL-005
Issued:
Intertek
Measurement of immunity from radiated fields (EN 55020 - Sec. 5.8)
7.0
Method:
The input voltage of the stripline is set to produce the correct voltage at the measuring plate, corresponding with the required field strength; at a frequency of
15 MHz.
15 MHz.
The correction factor K1, established by the calibration, is taken into account during the further measurement procedure.
The use of TEM devices of other dimensions or types is acceptable if it is shown that in the relevant frequency range the results do not differ by more than 2
dB from the values measured in the recommended stripline.
dB from the values measured in the recommended stripline.
Measurement set-up
The stripline shall be placed on non-metallic supports at least 0.8 m from the floor, and the top conductor plate shall be no closer than 0.8 m from the ceiling.
The stripline shall be placed on non-metallic supports at least 0.8 m from the floor, and the top conductor plate shall be no closer than 0.8 m from the ceiling.
When used in a room, the stripline shall be spaced at least 0,8 m from its open longitudinal sides to walls or other objects. When used inside a screened
room, RF absorbing plates shall be placed in the space between the sides of the stripline and the walls of the screened room.
room, RF absorbing plates shall be placed in the space between the sides of the stripline and the walls of the screened room.
The equipment under test is placed on a non-metallic support, 0.1 m high, in the centre of the stripline in the same position as for normal home usage (e.g.
in the case of portable equipment).
in the case of portable equipment).
Connecting leads to the equipment under test are inserted through holes in the base conductor plate of the stripline, the lengths of the leads inside the
stripline shall be as short as possible and completely surrounded by ferrite rings to attenuate induced currents. The transfer impedance of coaxial cables
used shall be no higher than 50 m /m at 30 MHz.
stripline shall be as short as possible and completely surrounded by ferrite rings to attenuate induced currents. The transfer impedance of coaxial cables
used shall be no higher than 50 m /m at 30 MHz.
The mains lead shall be bundled to a length less than 0.3 m.
Any balanced-to-unbalanced transformer used shall be connected to the equipment under test with leads as short as possible.
Terminals of the equipment under test not used during the measurement shall be terminated with shielded resistors matching the nominal terminal
impedance.
impedance.
If an equipment under test requires another apparatus in order to function properly, that additional apparatus shall be considered as part of the measuring
equipment and precautions shall be taken to ensure that the additional apparatus is not subject to the unwanted signal. This requires generally the placing of
the other apparatus outside the stripline.
equipment and precautions shall be taken to ensure that the additional apparatus is not subject to the unwanted signal. This requires generally the placing of
the other apparatus outside the stripline.
For the connections to the antenna terminal or to the video input terminal of the equipment under test, a high-grade coaxial cable with a high-grade connector
at the antenna or video input terminal side shall be used. These precautions may include additional earthing of coaxial shields, shielding, and insertion of an
RF filter on or application of ferrite rings to the connecting cables.
at the antenna or video input terminal side shall be used. These precautions may include additional earthing of coaxial shields, shielding, and insertion of an
RF filter on or application of ferrite rings to the connecting cables.
Measurement procedure
Figure 10 for EN 55020 shows the circuit used. For adjusting the wanted signals the audio or video controls of the equipment under test are set as
described in 5.2.2 and 5.2.3. During the adjustment procedure the unwanted signal (generator G2) is switched off. The wanted signals are specified in table
23 of EN 55020.
Figure 10 for EN 55020 shows the circuit used. For adjusting the wanted signals the audio or video controls of the equipment under test are set as
described in 5.2.2 and 5.2.3. During the adjustment procedure the unwanted signal (generator G2) is switched off. The wanted signals are specified in table
23 of EN 55020.
The required field strength is adjusted with the equipment under test inside the set-up. The equipment however is switched off during the adjustment.
For the measurement, the unwanted signal is supplied by generators G1 and G2 which is connected through wide-band amplifier Am, and low-pass filter F
to matching network MN of the stripline. The wide-band amplifier Am may be required to provide the necessary field strength. The stripline is loaded with a
terminating impedance TI.
For the measurement, the unwanted signal is supplied by generators G1 and G2 which is connected through wide-band amplifier Am, and low-pass filter F
to matching network MN of the stripline. The wide-band amplifier Am may be required to provide the necessary field strength. The stripline is loaded with a
terminating impedance TI.
Care shall be taken with respect to the harmonic level of the RF output of the generator G2 and in particular the output of the wide-band amplifier Am.
Harmonics may influence the measurement if they coincide with the tuned channel or the IF channel of the equipment under test. In some cases provisions
shall be made to reduce the harmonic level adequately by inserting a suitable low-pass filter F.
Harmonics may influence the measurement if they coincide with the tuned channel or the IF channel of the equipment under test. In some cases provisions
shall be made to reduce the harmonic level adequately by inserting a suitable low-pass filter F.
The audio output power levels shall be measured according to 5.2.2 of EN 55020
.
The unwanted signal shall be amplitude modulated with 1 kHz at 80 % depth, supplied by generator G2 and amplifier Am.
.
The unwanted signal shall be amplitude modulated with 1 kHz at 80 % depth, supplied by generator G2 and amplifier Am.
Measurements shall be performed while taking into account 4.1 and 5.1 of EN 55020.
Field immunity for large equipment not fitting in the open strip line
Equipment not fitting inside the open strip line shall be measured according to IEC 61000-4-3 in the frequency range 80 MHz to 150 MHz with limits as in
table 17 of EN 55020. The recommended step size of 1 % shall be replaced by a scanning, which allows for an adequate observation time of
the possible interference.
Equipment not fitting inside the open strip line shall be measured according to IEC 61000-4-3 in the frequency range 80 MHz to 150 MHz with limits as in
table 17 of EN 55020. The recommended step size of 1 % shall be replaced by a scanning, which allows for an adequate observation time of
the possible interference.
The equipment shall be placed on a non-conducting table with a height of 80 cm. Testing shall be done with a vertical polarised field with the equipment in
one position. Picture quality can be inspected by means of a video camera or by direct observation. The arrangements concerning cables and filters are the
same as for measurements in the open strip line.
one position. Picture quality can be inspected by means of a video camera or by direct observation. The arrangements concerning cables and filters are the
same as for measurements in the open strip line.
The front side of the EUT shall be positioned parallel to the antenna line of sight. The position shall be described in the measurement report.
Description:
Manufacturer:
Model:
Asset Number:
Cal Date:
Cal Due:
Test Equipment Used:
Page 15 of 27
EMC Report for Harman Consumer Group on the JBL On Tour II
12/05/2006
Report Number: 3109671ATL-005
Issued:
Intertek
Measurement of immunity from radiated fields (EN 55020 - Sec. 5.8)
7.0
Description:
Manufacturer:
Model:
Asset Number:
Cal Date:
Cal Due:
Test Equipment Used:
AC Millivoltmeter / Measuring Amplifier
B&K
2610
213203
10/26/2006
10/26/2007
Amplifier
IFI
CMX5001
213177
09/08/2003
VBU
Cable E10 (Formerly HS4000N-N2)
Huber-Suhner
Sucoflex 104PE
E10
05/12/2006
05/12/2007
Cable E14 (Formerly PE1500N-N)
Pasternack
RG217/U
E14
05/12/2006
05/12/2007
Cable E16 (Formerly PE2000N-N)
Pasternack
RG214/U
E16
05/12/2006
05/12/2007
Cable E17 (Formerly PE7000N-N)
Pasternack
RG214/U
E17
05/12/2006
05/12/2007
Ditizing Oscilloscope
Tektronix
TDS-540
213179
03/02/2006
03/02/2007
Field Monitor
Amplifier Research
FM2000
213011
VBU
VBU
Field Probe (10kHz to 1GHz)
Amplifier Research
FP2000
213074
07/17/2006
07/17/2007
Open Stripline (parallel plate) for homogeneous
fields
fields
Intertek
Stripline
213105a
VBU
VBU
Signal Generator
Rohde & Schwarz
SMT 03
015681
07/14/2006
07/14/2007
Signal Generator / Sweeper (20 GHz)
Hewlett Packard
83620B
213166
04/12/2006
04/12/2007
Transmission Impairment Measuring Set (1 of
2)
2)
Hewlett Packard
4934A
211379
01/26/2006
01/26/2007
Results: The sample tested was found to Comply.
Page 16 of 27
EMC Report for Harman Consumer Group on the JBL On Tour II
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