JBL SPARK (serv.man5) EMC - CB Certificate ▷ View online
Report No.: EM201300221-5 Application No.: ZJ00028648 Page 57 of 68
FCC ID:
APISPARK
4.10 RADIATED SPURIOUS EMISSIONS
4.10.1 LIMITS
Frequency (MHz)
Quasi-peak(dBµV/m)
30 ~ 88
40
88~216 43.5
216 ~ 960
46
Above 960
54
NOTE: (1) The lower limit shall apply at the transition frequencies.
Frequency (GHz)
Quasi-peak(dBµV/m)
1 ~ 26.5
74
1~ 26.5
54
4.10.2 TEST PROCEDURES
Procedure of Preliminary Test
Radiated emission tests shall be made with the receive or transmit antenna located at a horizontal
distance of 3 m plus half of the maximum width of the EUT being tested, measured from the centre
of the EUT. The tests shall be performed with the equipment configured as closely as possible to its
typical, practical operation. Unless stated otherwise, cables and wiring shall be as specified by the
manufacturer and the equipment shall be in its housing (or cabinet) with all covers and access panels
in place. Any deviation from normal EUT operating conditions shall be included in the test report.
distance of 3 m plus half of the maximum width of the EUT being tested, measured from the centre
of the EUT. The tests shall be performed with the equipment configured as closely as possible to its
typical, practical operation. Unless stated otherwise, cables and wiring shall be as specified by the
manufacturer and the equipment shall be in its housing (or cabinet) with all covers and access panels
in place. Any deviation from normal EUT operating conditions shall be included in the test report.
The EUT (on a non-conductive support structure, where applicable) shall be placed on a remotely
operated turntable, to allow the EUT to be rotated. The height of the EUT above the ground plane
shall be according to the following requirements.
operated turntable, to allow the EUT to be rotated. The height of the EUT above the ground plane
shall be according to the following requirements.
• Table-top equipment is placed on a non-conductive set-up table with height 0,8 m ± 0,01 m, ANSI
C63.4 specifies the method to determine the impact of the non-conductive set-up table on test
results.
C63.4 specifies the method to determine the impact of the non-conductive set-up table on test
results.
• Floor-standing equipment is placed on a non-conductive support, as specified in the applicable
product standard. If there are no EUT height placement requirements in the product standard, the
EUT shall be placed on a non-conductive support at a height of 5 cm to 15 cm above the ground
plane.
product standard. If there are no EUT height placement requirements in the product standard, the
EUT shall be placed on a non-conductive support at a height of 5 cm to 15 cm above the ground
plane.
Interface cables, loads, and devices should be connected to at least one of each type of the interface
ports of the EUT and, where practical, each cable shall be terminated in a device typical for its actual
use. Where there are multiple interface ports of the same type, a typical number of these devices
shall be connected to devices or loads. It is sufficient to connect only one of the loads, provided that
it can be shown, for example by preliminary testing, that the connection of further ports would not
significantly increase the level of disturbance (that is, more than 2 dB) or significantly degrade the
immunity level.
ports of the EUT and, where practical, each cable shall be terminated in a device typical for its actual
use. Where there are multiple interface ports of the same type, a typical number of these devices
shall be connected to devices or loads. It is sufficient to connect only one of the loads, provided that
it can be shown, for example by preliminary testing, that the connection of further ports would not
significantly increase the level of disturbance (that is, more than 2 dB) or significantly degrade the
immunity level.
The test mode(s) described in Item 2.4 were scanned during the preliminary test. After the
preliminary scan, we found the test mode described in Item 2.4 producing the highest emission
level. The EUT and cable configuration, antenna position, polarization and turntable position of the
above highest emission level were recorded for the final test.
preliminary scan, we found the test mode described in Item 2.4 producing the highest emission
level. The EUT and cable configuration, antenna position, polarization and turntable position of the
above highest emission level were recorded for the final test.
Procedure of Final Test
EUT and support equipment were set up on the turntable as per the configuration with highest
Report No.: EM201300221-5 Application No.: ZJ00028648 Page 58 of 68
FCC ID:
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emission level in the preliminary test. The Analyzer / Receiver scanned from 30MHz to 1000MHz.
Emissions were scanned and measured rotating the EUT to 360 degrees, varying cable placement
and positioning the antenna 1 to 4 meters above the ground plane, in both the vertical and the
horizontal polarization, to maximize the emission reading level. Record at least six highest
emissions. Emission frequency, amplitude, antenna position, polarization and turntable position
were recorded into a computer in which correction factors were used to calculate the emission level
and compare reading to the applicable limit and only QP reading is presented. The test data of the
worst-case condition(s) was recorded.
Emissions were scanned and measured rotating the EUT to 360 degrees, varying cable placement
and positioning the antenna 1 to 4 meters above the ground plane, in both the vertical and the
horizontal polarization, to maximize the emission reading level. Record at least six highest
emissions. Emission frequency, amplitude, antenna position, polarization and turntable position
were recorded into a computer in which correction factors were used to calculate the emission level
and compare reading to the applicable limit and only QP reading is presented. The test data of the
worst-case condition(s) was recorded.
Procedure of Final Test
EUT and support equipment were set up on the test bench as per the configuration with highest
emission level in the preliminary test. A scan was taken on both power lines, recording at least the
six highest emissions. Emission frequency and amplitude were recorded into a computer in which
correction factors were used to calculate the emission level and compare reading to the applicable
limit. The test data of the worst-case condition(s) was recorded.
emission level in the preliminary test. A scan was taken on both power lines, recording at least the
six highest emissions. Emission frequency and amplitude were recorded into a computer in which
correction factors were used to calculate the emission level and compare reading to the applicable
limit. The test data of the worst-case condition(s) was recorded.
Below 1GHz Set the spectrum analyzer: RBW =100KHz VBW >= RBW , Span = enough to captch the trace.
Sweep = auto; Detector Function = Peak. Trace = Max,hold.
Sweep = auto; Detector Function = Peak. Trace = Max,hold.
Above 1GHz Set the spectrum analyzer: RBW =1MHz VBW >= RBW , Span = enough to captch the trace. Sweep
= auto; Detector Function = Peak. Trace = Max,hold.
= auto; Detector Function = Peak. Trace = Max,hold.
Pre-test for normal mode and EDR mode, to find the EDR is the worst case.
The worst case emissions were reported.
4.10.3 TEST SETUP
Figure 1. 9KHz to 30MHz radiated emissions test configuration
Report No.: EM201300221-5 Application No.: ZJ00028648 Page 59 of 68
FCC ID:
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Figure 2. 30MHz to 1GHz radiated emissions test configuration
Figure 3. Above 1GHz radiated emissions test configuration
Report No.: EM201300221-5 Application No.: ZJ00028648 Page 60 of 68
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4.10.4 TEST RESULTS
1. Low Frequency 2402MHz
30MHz~1GHz Spurious Emissions .Quasi-Peak Measurement
No.
Frequency
(MHz)
Reading
(dBuV/m)
Correct
Factor(dB/m)
Result
(dBuV/m)
Limit
(dBuV/m)
Over Limit
(dB)
Antenna
polarization
1 30.0000 9.47
19.43
28.90 40.00 -11.10 Vertical
2 33.3803 10.23
17.37
27.60 40.00 -12.40 Vertical
3 43.9619 21.67
11.93
33.60 40.00 -6.40 Vertical
4 82.9571 16.52
8.88
25.40 40.00 -14.60 Vertical
5 92.3046 18.40
9.70
28.10 43.50 -15.40 Vertical
6 263.9970 9.18
14.02
23.20 46.00 -22.80 Vertical
7 41.5596 3.03
12.77
15.80 40.00 -24.20 Horizontal
8 82.0300 16.02
8.78
24.80 40.00 -15.20 Horizontal
9 103.8662 10.00
9.80
19.80 43.50 -23.70 Horizontal
10 191.6416 11.15
11.45
22.60 43.50 -20.90 Horizontal
11 231.9889 10.11
12.99
23.10 46.00 -22.90 Horizontal
12 367.7808 2.62
17.58
20.20 46.00 -25.80 Horizontal
1~25 GHz Harmonics & Spurious Emissions. Peak & Average Measurement
Peak Measurement:
No.
Frequency
(MHz)
Reading
(dBuV/m)
Correct
Factor(dB/m)
Result
(dBuV/m)
Limit
(dBuV/m)
Over Limit
(dB)
Antenna
polarization
1 15235.368 30.26
31.52
61.78 74.00 -12.22 Vertical
2 16869.777 30.43
35.22
65.65 74.00
-8.35
Vertical
3 13695.720 28.22
29.38
57.60 74.00 -16.40 Horizontal
4 15737.456 28.19
32.52
60.71 74.00 -13.29 Horizontal
5 16869.777 29.77
35.22
64.99 74.00
-9.01 Horizontal
AV Measurement:
No.
Frequency
(MHz)
Reading
(dBuV/m)
Correct
Factor(dB/m)
Result
(dBuV/m)
Limit
(dBuV/m)
Over Limit
(dB)
Antenna
polarization
1 8756.039 14.56
24.22
46.08
54.00
-7.92
Vertical
2 9357.371 15.27
24.67
50.49
54.00
-3.51
Vertical
3 22514.450 15.81
25.67
45.19
54.00
-8.81
Vertical
4 9254.355 15.36
24.54
47.88
54.00
-6.12
Horizontal
5 9853.482 15.69
25.45
50.91
54.00
-3.09
Horizontal
The field strength is calculated by adding the Antenna Factor. Correct Factor.
The basic equation with a sample calculation is as follows:
Final Test Level =Receiver Reading + Correct Factor
Final Test Level =Receiver Reading + Correct Factor
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