W25 CB Radio Test Report EMC COMPLIANCE Shenzhen Kirisun Communications Co., Ltd.

Shenzhen Kirisun Communications Co., Ltd. CB Radio

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Report No.: AGC00607171204FE03
Page 26 of 47
8DPSK-HCH
8DPSK-HCH
8DPSK-HCH
Report No.: AGC00607171204FE03
Page 27 of 47
10. RADIATED EMISSION
10.1. MEASUREMENT PROCEDURE
1. The EUT was placed on the top of the turntable 0.8 or 1.5 meter above ground. The phase center of the
receiving antenna mounted on the top of a height-variable antenna tower was placed 3 meters far away
from the turntable.
2. Power on the EUT and all the supporting units. The turntable was rotated by 360 degrees to determine
the position of the highest radiation.
3. The height of the broadband receiving antenna was varied between one meter and four meters above
ground to find the maximum emissions field strength of both horizontal and vertical polarization.
4. For each suspected emissions, the antenna tower was scan (from 1 M to 4 M) and then the turntable was
rotated (from 0 degree to 360 degrees) to find the maximum reading.
5. Set the test-receiver system to Peak or CISPR quasi-peak Detect Function with specified bandwidth
under Maximum Hold Mode.
6. For emissions above 1GHz, use 1MHz VBW and RBW for peak reading. Then 1MHz RBW and 10Hz
VBW for average reading in spectrum analyzer. Place the measurement antenna away from each area of
the EUT determined to be a source of emissions at the specified measurement distance, while keeping
the measurement antenna aimed at the source of emissions at each frequency of significant emissions,
with polarization oriented for maximum response. The measurement antenna may have to be higher or
lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission
source for receiving the maximum signal. The final measurement antenna elevation shall be that which
maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted
to a range of heights of from 1 m to 4 m above the ground or reference ground plane.
7. When the radiated emissions limits are expressed in terms of the average value of the emissions, and
pulsed operation is employed, the measurement field strength shall be determined by averaging over one
complete pulse train, including blanking intervals, as long as the pulse train does not exceed 0.1 seconds.
As an alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases where the
pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the average
absolute voltage during a 0.1 second interval during which the field strength is at its maximum values.
8.If the emissions level of the EUT in peak mode was 3 dB lower than the average limit specified, then
testing will be stopped and peak values of EUT will be reported, otherwise, the emissions which do not
have 3 dB margin will be repeated one by one using the quasi-peak method for below 1GHz.
9. For testing above 1GHz, the emissions level of the EUT in peak mode was lower than average limit (that
means the emissions level in peak mode also complies with the limit in average mode), then testing will
be stopped and peak values of EUT will be reported, otherwise, the emissions will be measured in
average mode again and reported.
10. In case the emission is lower than 30MHz, loop antenna has to be used for measurement and the
recorded data should be QP measured by receiver. High - Low scan is not required in this case.
Report No.: AGC00607171204FE03
Page 28 of 47
10.2. TEST SETUP
RADIATED EMISSION TEST-SETUP FREQUENCY BELOW 30MHZ
RADIATED EMISSION TEST SETUP 30MHz-1000MHz
RADIATED EMISSION TEST SETUP ABOVE 1000MHz
Report No.: AGC00607171204FE03
Page 29 of 47
10.3. LIMITS AND MEASUREMENT RESULT
15.209(a) Limit in the below table has to be followed
Frequencies
(MHz)
Field Strength
(micorvolts/meter)
Measurement Distance
(meters)
0.009~0.490
2400/F(KHz)
300
0.490~1.705
24000/F(KHz)
30
1.705~30.0
30
30
30~88
100
88~216
150
216~960
200
Above 960
500
Report No.: AGC00607171204FE03
Page 30 of 47
10.4. TEST RESULT
RADIATED EMISSION BELOW 30MHZ
No emission found between lowest internal used/generated frequencies to 30MHz.
RADIATED EMISSION BELOW 1GHZ
RADIATED EMISSION TEST- (30MHZ-1GHZ) -HORIZONTAL
RESULT: PASS
Report No.: AGC00607171204FE03
Page 31 of 47
RADIATED EMISSION TEST- (30MHZ-1GHZ) -VERTICAL
RESULT: PASS
Note: 1. Factor=Antenna Factor + Cable loss, Margin=Measurement-Limit.
2. The “Factor” value can be calculated automatically by software of measurement system.
3. All test modes for different EUT are pre-tested. The low channel for GFSK mode is the worst case
and recorded in the report.
Report No.: AGC00607171204FE03
Page 32 of 47
RADIATED EMISSION TEST- (ABOVE 1GHZ)
Frequency
Emission Level
Limits
Margin
Detector
(MHz)
(dBm)
(dBm)
(dB)
Type
Comment
Low Channel (2402 MHz)
4804
56.29
74
-17.71
Pk
Vertical
4804
41.84
54
-12.16
AV
Vertical
7206
55.46
74
-18.54
Pk
Vertical
7206
40.22
54
-13.78
AV
Vertical
4804
58.18
74
-15.82
Pk
Horizontal
4804
40.69
54
-13.31
AV
Horizontal
7206
57.65
74
-16.35
Pk
Horizontal
7206
39.41
54
-14.59
AV
Horizontal
Mid Channel (2441 MHz)
4882
58.52
74
-15.48
Pk
Vertical
4882
40.73
54
-13.27
AV
Vertical
7323
57.79
74
-16.21
Pk
Vertical
7323
39.45
54
-14.55
AV
Vertical
4882
59.97
74
-15.03
Pk
Horizontal
4882
39.41
54
-14.59
AV
Horizontal
7323
58.49
74
-15.51
Pk
Horizontal
7323
38.45
54
-15.55
AV
Horizontal
High Channel (2480 MHz)
4960
57.16
74
-16.84
pk
Vertical
4960
41.82
54
-12.18
AV
Vertical
7440
56.02
74
-17.98
pk
Vertical
7440
40.33
54
-13.67
AV
Vertical
4960
58.01
74
-15.99
pk
Horizontal
4960
39.15
54
-14.85
AV
Horizontal
7440
57.06
74
-16.94
pk
Horizontal
7440
38.46
54
-15.54
AV
Horizontal
Report No.: AGC00607171204FE03
Page 33 of 47
RESULT: PASS
Note:
1. 1GHz~25GHz:(Scan with GFSK, π/4-DQPSK,8DPSK, the worst case is GFSK Mode, No
recording in the test report at least have 20dB margin)
2. Margin = Emission Leve - Limit
Report No.: AGC00607171204FE03
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11. BAND EDGE EMISSION
11.1. MEASUREMENT PROCEDURE
1. The transmitter output is connected to a spectrum analyzer. The resolution bandwidth is set to
100kHz.The video bandwidth is set to 300kHz.
2. Transmitter set to the normal hopping mode at 2.4 and 2.4835 GHz.
11.2. TEST SET-UP
Radiated same as 10.2
Conducted set up
EUT
Spectrum analyzer
cable
Report No.: AGC00607171204FE03
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11.3. RADIATED TEST RESULT
Frequency
Emission Level
Limits
Margin
Detector
(MHz)
(dBm)
(dBm)
(dB)
Type
Comment
GFSK
2399.9
48.96
74
-25.04
peak
Vertical
2399.9
41.13
54
-12.87
AVG
Vertical
2399.9
49.15
74
-24.85
peak
Horizontal
2399.9
41.06
54
-12.14
AVG
Horizontal
2483.6
49.08
74
-24.92
peak
Vertical
2483.6
41.94
54
-12.06
AVG
Vertical
2483.6
48.77
74
-25.23
peak
Horizontal
2483.6
40.84
54
-13.16
AVG
Horizontal
π/4-DQPSK
2399.9
48.39
74
-25.61
peak
Vertical
2399.9
42.11
54
-11.89
AVG
Vertical
2399.9
48.04
74
-25.96
peak
Horizontal
2399.9
40.94
54
-13.04
AVG
Horizontal
2483.6
49.53
74
-24.47
peak
Vertical
2483.6
41.49
54
-12.51
AVG
Vertical
2483.6
48.33
74
-25.67
peak
Horizontal
2483.6
41.16
54
-12.84
AVG
Horizontal
8DPSK
2399.9
48.17
74
-25.83
peak
Vertical
2399.9
42.74
54
-11.26
AVG
Vertical
2399.9
49.02
74
-24.18
peak
Horizontal
2399.9
41.98
54
-12.02
AVG
Horizontal
2483.6
47.95
74
-26.05
peak
Vertical
2483.6
42.02
54
-11.98
AVG
Vertical
2483.6
48.22
74
-25.78
peak
Horizontal
2483.6
42.07
54
-11.93
AVG
Horizontal
RESULT: PASS
Note: The other modes radiation emission have enough 20dB margin.
Margin = Emission Leve – Limit
Report No.: AGC00607171204FE03
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11.4 CONDUCTED TEST RESULT
Test Graph
GFSK/LCH/No Hop
GFSK/HCH/ No Hop
GFSK/LCH/ Hop
GFSK/HCH/ Hop
π /4-DQPSK/LCH/No Hop
π /4-DQPSK/HCH/No Hop
Report No.: AGC00607171204FE03
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8DPSK/LCH/No Hop
Note: All modes were tested, only the worst case record in the report.
8DPSK/HCH/No Hop
Report No.: AGC00607171204FE03
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12. NUMBER OF HOPPING FREQUENCY
12.1. MEASUREMENT PROCEDURE
1. Place the EUT on the table and set it in transmitting mode.
2. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the
spectrum analyzer.
3. Set the spectrum analyzer Start = 2.4GHz Stop = 2.4835GHz
4. Set the Spectrum Analyzer as RBW>=1%span, VBW>=RBW.
12.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION)
Same as described in section 8.2
12.3. MEASUREMENT EQUIPMENT USED
The same as described in section 6
12.4. LIMITS AND MEASUREMENT RESULT
Mode
Channel.
Number of Hopping Channel
Verdict
GFSK
Hop
79
PASS
Note: All modes were tested, only the worst case record in the report.
Test Graph
Graphs
GFSK/Hop
Report No.: AGC00607171204FE03
Page 39 of 47
13. TIME OF OCCUPANCY (DWELL TIME)
13.1. MEASUREMENT PROCEDURE
The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings:
1. Span: Zero span, centered on a hopping channel.
2. RBW shall be≤channel spacing and where possible RBW should be set >> 1 / T, where T is the expected
dwell time per channel.
3. Sweep: As necessary to capture the entire dwell time per hopping channel; where possible use a video
trigger and trigger delay so that the transmitted signal starts a little to the right of the start of the plot. The
trigger level might need slight adjustment to prevent triggering when the system hops on an adjacent channel.
4. Detector function: Peak. Trace: Max hold.
5. Use the marker-delta function to determine the transmit time per hop.
6. Using the following equation:
13.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION)
Same as described in section 8.2
13.3. MEASUREMENT EQUIPMENT USED
The same as described in section 6
Report No.: AGC00607171204FE03
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13.4. LIMITS AND MEASUREMENT RESULT
Channel.
Burst Width [ms/hop/ch]
Dwell Time[ms]
Verdict
Limit
(ms)
LCH
2.890
308.267
PASS
400
MCH
2.895
308.800
PASS
400
HCH
2.900
309.333
PASS
400
Note: The DH5 for GFSK modulation is the worst case and recorded in the report.
Test Graph
GFSK-LCH
GFSK-HCH
GFSK-MCH
Page 41 of 47
14. FREQUENCY SEPARATION
14.1. MEASUREMENT PROCEDURE
1. Place the EUT on the table and set it in transmitting mode
2. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the
spectrum analyzer
3. Set Span = wide enough to capture the peaks of two adjacent channels Resolution (or IF) Bandwidth
(RBW)  1% of the span Video (or Average) Bandwidth (VBW)  RBW; Sweep = auto; Detector function =
peak; Trace = max hold
14.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION)
Same as described in section 6.2
14.3. MEASUREMENT EQUIPMENT USED
The same as described in section 6.3
14.4. LIMITS AND MEASUREMENT RESULT
Mode
Channel.
Carrier Frequency Separation [MHz]
Verdict
GFSK
Hop
0.999
PASS
Note: All modes were tested, only the worst case record in the report.
Test Graph
Graphs
GFSK/Hop
Report No.: AGC00607171204FE03
Page 42 of 47
15. FCC LINE CONDUCTED EMISSION TEST
15.1. LIMITS OF LINE CONDUCTED EMISSION TEST
Frequency
Maximum RF Line Voltage
Q.P.( dBuV)
Average( dBuV)
150kHz~500kHz
66-56
56-46
500kHz~5MHz
56
46
5MHz~30MHz
60
50
Note:
1. The lower limit shall apply at the transition frequency.
2. The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz.
15.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST
EUT & Support
Units
Report No.: AGC00607171204FE03
Page 43 of 47
15.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST
1. The equipment was set up as per the test configuration to simulate typical actual usage per the user’s
manual. When the EUT is a tabletop system, a wooden table with a height of 0.8 meters is used and is
placed on the ground plane as per ANSI C63.10 (see Test Facility for the dimensions of the ground plane
used). When the EUT is a floor-standing equipment, it is placed on the ground plane which has a 3-12
mm non-conductive covering to insulate the EUT from the ground plane.
2. Support equipment, if needed, was placed as per ANSI C63.10.
3. All I/O cables were positioned to simulate typical actual usage as per ANSI C63.10.
4. All support equipments received AC120V/60Hz power from a LISN, if any.
5. The EUT received DC charging voltage by adapter which received 120V/60Hzpower by a LISN..
6. The test program was started. Emissions were measured on each current carrying line of the EUT using a
spectrum Analyzer / Receiver connected to the LISN powering the EUT. The LISN has two monitoring
points: Line 1 (Hot Side) and Line 2 (Neutral Side). Two scans were taken: one with Line 1 connected to
Analyzer / Receiver and Line 2 connected to a 50 ohm load; the second scan had Line 1 connected to a
50 ohm load and Line 2 connected to the Analyzer / Receiver.
7. Analyzer / Receiver scanned from 150 kHz to 30MHz for emissions in each of the test modes.
8. During the above scans, the emissions were maximized by cable manipulation.
9. The test mode(s) were scanned during the preliminary test.
Then, the EUT configuration and cable configuration of the above highest emission level were recorded for
reference of final testing.
15.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST
1. EUT and support equipment was set up on the test bench as per step 2 of the preliminary test.
2. A scan was taken on both power lines, Line 1 and Line 2, 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. If EUT emission level was
less –2dB to the A.V. limit in Peak mode, then the emission signal was re-checked using Q.P and Average
detector.
3. The test data of the worst case condition(s) was reported on the Summary Data page.
Report No.: AGC00607171204FE03
Page 44 of 47
15.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST
LINE CONDUCTED EMISSION TEST LINE 1-L
Report No.: AGC00607171204FE03
Page 45 of 47
LINE CONDUCTED EMISSION TEST LINE 2-N
Report No.: AGC00607171204FE03
Page 46 of 47
APPENDIX A: PHOTOGRAPHS OF TEST SETUP
LINE CONDUCTED EMISSION TEST SETUP
RADIATED EMISSION TEST SETUP
Report No.: AGC00607171204FE03
Page 47 of 47
----END OF REPORT----
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Date Submitted2018-07-13 00:00:00
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