00000NU317 IQbuds Test Report CE EMC Nuheara Limited

Nuheara Limited IQbuds

FCC ID Filing: 2AKMG00000NU317
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Report Number: 1708FR18
RF Test Report
Applicant
: Nuheara Limited
Product Type
: IQbuds
Trade Name
: NUHEARA
Model Number
: NU317
Test Specification
: FCC 47 CFR PART 15 SUBPART C
ANSI C63.10:2013
Receive Date
: Aug. 02, 2017
Test Period
: Aug. 11, 2017
Issue Date
: Aug. 21, 2017
Issue by
A Test Lab Techno Corp.
No. 140-1, Changan Street, Bade District,
Taoyuan City 33465, Taiwan (R.O.C)
Tel:+886-3-2710188 / Fax:+886-3-2710190
Taiwan Accreditation Foundation accreditation number: 1330
Test Firm MRA designation number: TW0010
Note: This report shall not be reproduced except in full, without the written approval of A Test Lab Techno
Corp. This document may be altered or revised by A Test Lab Techno Corp. personnel only, and shall be
noted in the revision section of the document. The client should not use it to claim product endorsement by
TAF, or any government agencies. The test results in the report only apply to the tested sample.
1 of 38
Report Number: 1708FR18
Revision History
Rev.
Issue Date
00
Aug. 21, 2017
Revisions
Initial Issue
Revised By
Nina Lin
2 of 38
Report Number: 1708FR18
Ve r if ica t ion of C omplia nc e
Issued Date: Aug. 21, 2017
Applicant
Nuheara Limited
Product Type
IQbuds
Trade Name
NUHEARA
Model Number
NU317
FCC ID
2AKMG00000NU317
EUT Rated Voltage
DC 4.2V, 100mA
Test Voltage
DC 3.7V
Applicable Standard
FCC 47 CFR PART 15 SUBPART C
ANSI C63.10:2013
Test Result
Complied
Performing Lab.
A Test Lab Techno Corp.
No. 140-1, Changan Street, Bade District,
Taoyuan City 33465, Taiwan (R.O.C)
Tel:+886-3-2710188 / Fax:+886-3-2710190
Taiwan Accreditation Foundation accreditation number: 1330
http://www.atl-lab.com.tw/e-index.htm
A Test Lab Techno Corp. tested the above equipment in accordance with the requirements set forth in the above
standards. All indications of Pass/Fail in this report are opinions expressed by A Test Lab Techno Corp. based on
interpretations and/or observations of test results. Measurement Uncertainties were not taken into account and are
published for informational purposes only. The test results show that the equipment tested is capable of
demonstrating compliance with the requirements as documented in this report.
Approved By
(Manager)
Reviewed By
:
(Fly Lu)
(Testing Engineer)
3 of 38
:
(Eric Ou Yang)
Report Number: 1708FR18
TABLE OF CONTENTS
General Information ....................................................................................................... 5
1.1. Summary of Test Result ........................................................................................... 5
1.2. Measurement Uncertainty ........................................................................................ 5
EUT Description ............................................................................................................. 6
Test Methodology .......................................................................................................... 7
3.1. Mode of Operation ................................................................................................... 7
3.2. EUT Exercise Software ............................................................................................ 7
3.3. Configuration of Test System Details ....................................................................... 8
3.4. Test Site Environment .............................................................................................. 8
Radiated Interference Measurement ............................................................................ 9
Antenna Measurement ................................................................................................ 38
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Report Number: 1708FR18
General Information
1.1.
Summary of Test Result
FCC Standard
Item
15.207
AC Power Conducted Emission
15.203
Antenna Requirement
15.247(b)(1)
15.247(d)
Result
Remark
N/A
-----
PASS
-----
N/A
-----
PASS
-----
Max. Output Power
Transmitter Radiated Emissions
15.247(a)(1)
20dB RF Bandwidth
N/A
-----
15.247(a)(1)
Carrier Frequency Separation
N/A
-----
15.247(a)(1)(iii)
Number of Hopping
N/A
-----
15.247(a)(1)(iii)
Time of Occupancy (Dwell Time)
N/A
-----
15.247(d)
Out of Band Conducted Spurious
Emission
N/A
-----
The test results of this report relate only to the tested sample(s) identified in this report. Manufacturer or whom it
may concern should recognize the pass or fail of the test result.
Note: The devise adding new type antenna and Max. Gain to do Class II Permissive Change report so it only test
transmitter radiated emissions and band edge measurement.
1.2.
Measurement Uncertainty
Test Item
Conducted Emission
Radiated Emission
Frequency Range
Uncertainty (dB)
9kHz ~ 150KHz
2.7
150kHz ~ 30MHz
2.7
9kHz ~ 30MHz
1.7
30MHz ~ 1000MHz
5.7
1000MHz ~ 18000MHz
5.5
18000MHz ~ 26500MHz
4.8
26500MHz ~ 40000MHz
4.8
Conducted Output Power
+0.27 dB / -0.28 dB
RF Bandwidth
4.96%
Power Spectral Density
+0.71 dB / -0.77 dB
5 of 38
Report Number: 1708FR18
EUT Description
Applicant
Nuheara Limited
Unit 5, 28 John St Northbridge, 6003, Australia
Manufacturer
Flextronics, Zhuhai
Xin Qing Science & Technology Industrial Park, Jing An, Doumen, Zhuhai, P.R. China
Product
IQbuds
Trade Name
NUHEARA
Model Number
NU317
FCC ID
2AKMG00000NU317
Class II Permissive
Change
Adding new type antenna and Max. Gain
Frequency Range
2402 ~ 2480 MHz
Modulation Type
GFSK for 1Mbps
π/4-DQPSK for 2Mbps
8DPSK for 3Mbps
Operate Temp. Range
Antenna information
0 ~ +50 ℃
Type
Max. Gain (dBi)
Fluid conductive silver Antenna
-3.68
RF Output Power
GFSK for 1Mbps
0.00507
(Conducted)
π/4-DQPSK for 2Mbps
0.00337
8DPSK for 3Mbps
0.00361
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Report Number: 1708FR18
Test Methodology
3.1.
Mode of Operation
Decision of Test ATL has verified the construction and function in typical operation. All the test modes were carried
out with the EUT in normal operation, which was shown in this test report and defined as:
Pre-Test Mode
Mode 1: Transmit mode
Mode 2: GFSK Continuous TX mode
Mode 3: π/4-DQPSK Continuous TX mode
Mode 4: 8DPSK Continuous TX mode
After verification, all tests were carried out with the worst case test modes as shown below except radiated spurious
emission below 1GHz and power line conducted emissions below 30MHz, which worst case was in TX mode only.
By preliminary testing and verifying three axis (X, Y and Z) position of EUT transmitted status, it was found that “X
axis” position was the worst, then the final test was executed the worst condition and test data were recorded in this
report.
Final-Test Mode
Mode 1: Transmit mode
Mode 2: GFSK Continuous TX mode
Mode 4: 8DPSK Continuous TX mode
Description of Test Modes
Preliminary tests were performed in different modulation to find the worst case. The modulation has shown the
worst-case in section 4.5. Investigation has been done on all the possible configurations for searching the worst
cases.
Tested System Details
The types for all equipments, plus descriptions of all cables used in the tested system (including inserted cards) are:
Product
1.
3.2.
Bluetooth Tester
Manufacturer
Model Number
Serial Number
Power Cord
R&S
CBT
100350
NA
EUT Exercise Software
Setup the EUT and Bluetooth Tester (CBT) as shown on 3.3.
Turn on the power of all equipment.
Turn on Bluetooth function and link to Bluetooth tester
EUT run test program.
Measurement Software
EZ-EMC Ver. ATL-03A1-1
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Report Number: 1708FR18
3.3.
Configuration of Test System Details
Radiated Emissions
Remote Site
CBT
EUT
3.4.
Test Site Environment
Items
Temperature (C)
Humidity (%RH)
Barometric pressure (mbar)
Required (IEC 60068-1)
15-35
Actual
26
25-75
60
860-1060
950
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Report Number: 1708FR18
Radiated Interference Measurement

Limit
According to §15.209(a), except as provided elsewhere in this subpart, the emissions from an intentional radiator
shall not exceed the field strength levels specified in the following table:
Frequency
Field Strength
Measurement Distance
(MHz)
(μV/m at meter)
(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
** Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this
Section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz.
However, operation within these frequency bands is permitted under other sections of this Part, e.g., Sections
15.231 and 15.241.

Test Instruments
3 Meter Chamber
Equipment
Manufacturer
Model Number
Serial Number
Cal. Date
Cal. Period
RF Pre-selector
Agilent
N9039A
MY46520256
04/24/2017
1 year
Spectrum Analyzer
Agilent
E4446A
MY46180578
04/24/2017
1 year
Pre Amplifier
Agilent
8449B
3008A02237
10/11/2016
1 year
Pre Amplifier
Agilent
8447D
2944A11119
01/12/2017
1 year
Broadband Antenna
Schwarzbeck
VULB9168
416
10/13/2016
1 year
Horn Antenna
(1~18GHz)
SCHWARZBECK
MESS-ELEKTRONIK
BBHA9120D
9120D-550
06/22/2017
1 year
Horn Antenna
(18~40GHz)
ETS
3116
86467
09/05/2016
1 year
Loop Antenna
COM-POWER
CORPORATION
AL-130
121014
01/26/2017
1 year
Microwave Cable
EMCI
EMC102-KM-KM-14000
151001
02/20/2017
1 year
Microwave Cable
EMCI
EMC-104-SM-SM-14000
140202
02/20/2017
1 year
Microwave Cable
EMCI
EMC104-SM-SM-600
140301
02/20/2017
1 year
Test Site
ATL
TE01
888001
08/29/2016
1 year
Note: N.C.R. = No Calibration Request.
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Report Number: 1708FR18

Setup
9kHz ~ 30MHz
Below 1GHz
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Report Number: 1708FR18
Above 1GHz
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Report Number: 1708FR18

Test Procedure
Final radiation measurements were made on a three-meter, Semi Anechoic Chamber. The EUT system was placed
on a nonconductive turntable which is 0.8 or 1.5 meters height(below 1GHz use 0.8m turntable / above 1GHz use
1.5m turntable) top surface 1.0 x 1.5 meter. The spectrum was examined from 250 MHz to 2.5 GHz in order to cover
the whole spectrum below 10th harmonic which could generate from the EUT. During the test, EUT was set to
transmit continuously & Measurements spectrum range from 9 kHz to 26.5 GHz is investigated.
For measurements below 1 GHz the resolution bandwidth is set to 100 kHz for peak detection measurements or
120 kHz for quasi-peak detection measurements. Peak detection is used unless otherwise noted as quasi-peak.
For measurements above 1 GHz the resolution bandwidth is set to 1 MHz, and then the video bandwidth is set to 1
MHz for peak measurements and 10 Hz for average measurements.
A nonconductive material surrounded the EUT to supporting the EUT for standing on tree orthogonal planes. At
each condition, the EUT was rotated 360 degrees, and the antenna was raised and lowered from one to four meters
to find the maximum emission levels. Measurements were taken using both horizontal and vertical antenna
polarization.
SCHWARZBECK MESS-ELEKTRONIK Biconilog Antenna at 3 Meter and the SCHWARZBECK Double Ridged
Guide Antenna
was used in frequencies 1 – 26.5 GHz at a distance of 1 meter. All test results were extrapolated to
equivalent signal at 3 meters utilizing an inverse linear distance extrapolation Factor (20dB/decade).
For testing above 1GHz, the emission level of the EUT in peak mode was 20dB lower than average limit (that
means the emission 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.
Appropriate preamplifiers were used for improving sensitivity and precautions were taken to avoid overloading or
desensitizing the spectrum analyzer. No post – detector video filters were used in the test.
The spectrum analyzer’s 6 dB bandwidth was set to 1 MHz, and the analyzer was operated in the peak detection
mode, for frequencies both below and up 1 GHz. The average levels were obtained by subtracting the duty cycle
correction factor from the peak readings.
The following procedures were used to convert the emission levels measured in decibels referenced to 1 microvolt
(dBuV) into field intensity in micro volts pre meter (uV/m).
The actual field intensity in decibels referenced to 1 microvolt in to field intensity in micro colts per meter (dBuV/m).
The actual field is intensity in referenced to 1 microvolt per meter (dBuV/m) is determined by algebraically adding
the measured reading in dBuV, the antenna factor (dB), and cable loss (dB) and Subtracting the gain of preamplifier
(dB) is auto calculate in spectrum analyzer.
(1) Amplitude (dBuV/m) = FI (dBuV) +AF (dBuV) +CL (dBuV)-Gain (dB)
FI= Reading of the field intensity.
AF= Antenna factor.
CL= Cable loss.
P.S Amplitude is auto calculate in spectrum analyzer.
(2) Actual Amplitude (dBuV/m) = Amplitude (dBuV)-Dis(dB)
The FCC specified emission limits were calculated according the EUT operating frequency and by following
linear interpolation equations:
(a) For fundamental frequency : Transmitter Output < +30dBm
(b) For spurious frequency : Spurious emission limits = fundamental emission limit /10
Data of measurement within this frequency range without mark in the table above means the reading of emissions
are attenuated more than 20dB below the permissible limits or the field strength is too small to be measured.
12 of 38
Report Number: 1708FR18

Test Result
Below 1GHz
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Test Mode:
Mode 1
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Date:
08/11/2017
Frequency
Reading
Correct Factor
Result
Limit
Margin
Remark
Ant.Polar.
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
232.7300
34.71
-5.47
29.24
46.00
-16.76
QP
322.9400
30.47
-2.33
28.14
46.00
-17.86
QP
428.6700
26.88
-0.22
26.66
46.00
-19.34
QP
516.9400
30.26
1.55
31.81
46.00
-14.19
QP
701.2400
26.42
5.05
31.47
46.00
-14.53
QP
896.2100
26.51
8.95
35.46
46.00
-10.54
QP
232.7300
34.51
-5.47
29.04
46.00
-16.96
QP
322.9400
31.11
-2.33
28.78
46.00
-17.22
QP
451.9500
30.01
0.23
30.24
46.00
-15.76
QP
580.9600
28.24
2.93
31.17
46.00
-14.83
QP
698.3300
26.84
5.00
31.84
46.00
-14.16
QP
868.0800
27.41
8.34
35.75
46.00
-10.25
QP
H/V
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3.No emission found between lowest internal used/generated frequencies to 30MHz (9 kHz~30MHz).
13 of 38
Report Number: 1708FR18
Above 1GHz
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4804.000
49.55
-6.40
43.15
74.00
-30.85
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
14 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4804.000
49.71
-6.40
43.31
74.00
-30.69
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
15 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2441MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4882.000
50.02
-6.12
43.90
74.00
-30.10
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
16 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2441MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4882.000
50.27
-6.12
44.15
74.00
-29.85
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
17 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4960.000
50.32
-5.86
44.46
74.00
-29.54
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
18 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4960.000
48.83
-5.86
42.97
74.00
-31.03
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
19 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4804.000
50.09
-6.40
43.69
74.00
-30.31
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
20 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4804.000
49.64
-6.40
43.24
74.00
-30.76
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
21 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2441MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4882.000
50.32
-6.12
44.20
74.00
-29.80
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
22 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2441MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4882.000
49.20
-6.12
43.08
74.00
-30.92
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
23 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4960.000
48.70
-5.86
42.84
74.00
-31.16
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
24 of 38
Remark
peak
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Harmonic
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
4960.000
49.48
-5.86
43.62
74.00
-30.38
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
25 of 38
Remark
peak
Report Number: 1708FR18
Band Edge
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2364.340
41.56
0.05
41.61
74.00
-32.39
peak
2390.000
37.48
0.15
37.63
74.00
-36.37
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
26 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2389.530
40.42
0.15
40.57
74.00
-33.43
peak
2390.000
37.88
0.15
38.03
74.00
-35.97
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
27 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2483.500
40.91
0.55
41.46
74.00
-32.54
peak
2484.800
42.89
0.56
43.45
74.00
-30.55
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
28 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 2
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2483.500
38.75
0.55
39.30
74.00
-34.70
peak
2491.000
45.09
0.58
45.67
74.00
-28.33
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
29 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band Edge
Power:
DC 3.7V
Test Mode:
Mode 2
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Frequency:
Hopping
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct
Result
Limit
Margin
Remark
Factor
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2388.090
42.14
0.15
42.29
74.00
-31.71
peak
2390.000
38.86
0.15
39.01
74.00
-34.99
peak
2483.500
37.83
0.55
38.38
74.00
-35.62
peak
2490.690
42.95
0.58
43.53
74.00
-30.47
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
30 of 38
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band Edge
Power:
DC 3.7V
Test Mode:
Mode 2
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Frequency:
Hopping
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct
Result
Limit
Margin
Remark
Factor
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2363.770
42.52
0.05
42.57
74.00
-31.43
peak
2390.000
39.01
0.15
39.16
74.00
-34.84
peak
2483.500
44.55
0.55
45.10
74.00
-28.90
peak
2484.420
45.12
0.56
45.68
74.00
-28.32
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
31 of 38
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2380.730
40.63
0.12
40.75
74.00
-33.25
peak
2390.000
36.78
0.15
36.93
74.00
-37.07
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
32 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2402MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2386.230
42.54
0.14
42.68
74.00
-31.32
peak
2390.000
36.76
0.15
36.91
74.00
-37.09
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
33 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2483.500
38.05
0.55
38.60
74.00
-35.40
peak
2494.740
43.18
0.60
43.78
74.00
-30.22
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
34 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band edge
Power:
DC 3.7V
Frequency:
2480MHz
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Mode:
Mode 4
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct Factor
Result
Limit
Margin
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2483.500
39.74
0.55
40.29
74.00
-33.71
peak
2496.300
44.82
0.60
45.42
74.00
-28.58
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
3. When the peak results are less than average limit, so not need to evaluate the average.
35 of 38
Remark
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band Edge
Power:
DC 3.7V
Test Mode:
Mode 4
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Frequency:
Hopping
Date:
08/11/2017
Ant.Polar.:
Horizontal
No.
Frequency
Reading
Correct
Result
Limit
Margin
Remark
Factor
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2387.140
42.12
0.14
42.26
74.00
-31.74
peak
2390.000
39.60
0.15
39.75
74.00
-34.25
peak
2483.500
43.83
0.55
44.38
74.00
-29.62
peak
2494.680
43.88
0.60
44.48
74.00
-29.52
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
36 of 38
Report Number: 1708FR18
Standard:
FCC Part 15.247
Test Distance:
3m
Test item:
Band Edge
Power:
DC 3.7V
Test Mode:
Mode 4
Temp.(℃)/Hum.(%RH):
26(℃)/60%RH
Frequency:
Hopping
Date:
08/11/2017
Ant.Polar.:
Vertical
No.
Frequency
Reading
Correct
Result
Limit
Margin
Remark
Factor
(MHz)
(dBuV)
(dB/m)
(dBuV/m)
(dBuV/m)
(dB)
2387.520
42.16
0.15
42.31
74.00
-31.69
peak
2390.000
39.40
0.15
39.55
74.00
-34.45
peak
2483.500
44.75
0.55
45.30
74.00
-28.70
peak
2483.850
45.72
0.55
46.27
74.00
-27.73
peak
Note:1.Result (dBuV/m) = Correct Factor (dB/m) + Reading(dBuV).
2.Correction factor (dB/m) = Antenna Factor (dB/m) + Cable loss (dB) – Pre-Amplifier gain (dB).
37 of 38
Report Number: 1708FR18
Antenna Measurement

Limit
For intentional device, according to 15.203, an intentional radiator shall be designed to ensure that no antenna
other than that furnished by the responsible party shall be used with the device.
And According to 15.247 (b)(4), if transmitting antennas of directional gain greater than 6 dBi are used, the power
shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6dBi.

Antenna Connector Construction
See section 2 – antenna information.
38 of 38
Download: 00000NU317 IQbuds Test Report CE EMC Nuheara Limited
Mirror Download [FCC.gov]00000NU317 IQbuds Test Report CE EMC Nuheara Limited
Document ID3556290
Application IDmCBbFfR0cqwUTYmL4B6CqQ==
Document DescriptionRF Test Report
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeTest Report
Display FormatAdobe Acrobat PDF - pdf
Filesize122.81kB (1535144 bits)
Date Submitted2017-09-12 00:00:00
Date Available2017-09-12 00:00:00
Creation Date2017-08-18 18:59:43
Producing SoftwareMicrosoft® Word 2010
Document Lastmod2017-08-28 14:47:08
Document TitleCE EMC TEST REPORT
Document CreatorMicrosoft® Word 2010
Document Author: julia.wei

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XMP Toolkit                     : Adobe XMP Core 4.0-c316 44.253921, Sun Oct 01 2006 17:14:39
Create Date                     : 2017:08:18 18:59:43+08:00
Creator Tool                    : Microsoft® Word 2010
Modify Date                     : 2017:08:28 14:47:08+08:00
Metadata Date                   : 2017:08:28 14:47:08+08:00
Format                          : application/pdf
Creator                         : julia.wei
Title                           : CE EMC TEST REPORT
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Page Count                      : 38
Language                        : zh-TW
Author                          : julia.wei
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