JBL ON TOUR XT (serv.man3) EMC - CB Certificate ▷ View online
EMC Report for Harman Model JBL On Tour XT
File: 3109671LAX-009 Revision 1
File: 3109671LAX-009 Revision 1
Page 9 of 27
4.1.3
Field Strength Calculations
The field strength is calculated by adding the Quasi -peak reading on the EMI Receiver to the factors
associated with preamplifiers (if any), antennas and cables. A sample calculation is included below.
FS = RA + AF + CF
Where
FS = Field Strength in dB
μV/m
RA = Receiver Amplitude (including preamplifier) in dB
μV
CF = Cable Attenuation Factor in dB
AF = Antenna Factor in dB/m
AF = Antenna Factor in dB/m
Assume a receiver reading of 27 dB
μV is obtained. The antenna factor of 13.5 dB and cable factor of 0.5 dB
is added. The net field strength for comparison to the appropriate emission limit is 41 dB
μV/m.
EMC Report for Harman Model JBL On Tour XT
File: 3109671LAX-009 Revision 1
File: 3109671LAX-009 Revision 1
Page 10 of 27
4.1.4
Test Limits
Limits for Radiated Disturbances for CISPR 13
NOTE: Limits for radiated emissions are not defined for associated equipment.
4.1.5
Radiated Emission Data
Standard: CISPR 13:1996
Measurement Uncertainty: 4.24 dB
Company: Harman Multimedia Consumer Group
Name: Portable Loudspeaker
Model: JBL On Tour XT
Distance: 3 m
Name: Portable Loudspeaker
Model: JBL On Tour XT
Distance: 3 m
TEST RESULT:
This test is not applicable. Limits for emissions are not defined for associated
equipment.
equipment.
4.1.6
Radiated Emission Test Configuration Photograph
Not applicable.
EMC Report for Harman Model JBL On Tour XT
File: 3109671LAX-009 Revision 1
File: 3109671LAX-009 Revision 1
Page 11 of 27
4.2 Conducted Emissions Measurements
4.2.1
4.2.1
Site and Test Description
The test facility is a specially designed and constructed by using a metallic wall as the vertical coupling
plane. One test site is used for CISPR and FCC testing.
All conducted voltage measurements are made on each current-carrying conductor at the plug end of the
EUT power cord or calibrated extension by the use of mating plugs and receptacles on the EUT and
LISN/AMN if used. Equipment is tested with power cords that are normally used or that have electrical
and shielding characteristics that are the same as those cords normally used. For those measurements
using a LISN/AMN, the 50
Ω measuring port is terminated by a 50 Ω receiver or a 50 Ω resistive load.
Hence all 50
Ω measuring ports of the LISN/AMN are terminated by 50 Ω.
If a screened room or chamber is used, the EUT is placed 40 cm from a conductive wall, with the wall at
the lead of the EUT. IF the test is being performed on an OATS or sheltered site, the vertical ground
plane is placed 40 cm away from the rear of the EUT.
The mains lead shell be arranged to follow shortest possible part between the EUT and Artificial Mains
Network on the ground. The excess length of the lead between the EUT and the LISN/AMN receptacle
(or mains outlet where a LISN/AMN cannot be used) is folded back and forth at the center of the lead to
form a bundle not exceeding 40 cm in length. If the EUT does not have a flexible power lead, then it is
placed at a distance of 80 cm from the LISN/AMN (or mains outlet where a LISN/AMN cannot be used)
and connected to it by a lead or appropriate connection no longer than 1 m. Measurements are made at
the LISN/AMN end of this lead or connection.
EMC Report for Harman Model JBL On Tour XT
File: 3109671LAX-009 Revision 1
File: 3109671LAX-009 Revision 1
Page 12 of 27
4.2.2
Test Limits for CISPR 13
Limits of Main Terminal Disturbance Voltage
FREQUENCY
RANGE (MHz)
QP Limits (dBµV)
AVG Limits (dBµV)
0.15 to 0.50
66 to 56
56 to 46
0.50 to 5
56
46
5 to 30
60
50
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