FCC TEST REPORT

FCC ID: 2BE3C-75RGB

Product : Rainy75 Wireless Keyboard
Model Name : Rainy75RGB, QS4541113-3500mAh
Brand : WOB
Report No. : NCT24005386E-2

Prepared for

Dongguan Huami Intelligent Technology Co., Ltd

Weipai Technology Park, Yanwo Village, Shipai Town,
Dongguan City, Guangdong Province

Prepared by

Shenzhen NCT Testing Technology Co., Ltd.

A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District,
Shenzhen, People’s Republic of China

TEL: 400-8868-419
FAX: 86-755-27790922
 Report No.: NCT24005386E-2

1 TEST RESULT CERTIFICATION

Applicant’s name : Dongguan Huami Intelligent Technology Co., Ltd
Weipai Technology Park, Yanwo Village, Shipai Town,
Address : Dongguan City, Guangdong Province

Manufacture's name : Dongguan Huami Intelligent Technology Co., Ltd

Weipai Technology Park, Yanwo Village, Shipai Town,
Address :
Dongguan City, Guangdong Province
Product name : Rainy75 Wireless Keyboard

Model name : Rainy75RGB, QS4541113-3500mAh

Standards : FCC CFR47 Part 15 Section 15.247

Test procedure : ANSI C63.10:2013

Date of test : Feb. 01, 2024 to Feb. 21, 2024

Date of Issue : Feb. 22, 2024

This device described above has been tested by NCT, and the test results show that the
equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only
to the tested sample identified in the report.
This report shall not be reproduced except in full, without the written approval of NCT, this
document may be altered or revised by NCT, personal only, and shall be noted in the revision of
the document.

Test Engineer:

Keven Wu / Engineer

Technical Manager:

Henry Wang / Manager

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 Report No.: NCT24005386E-2

Contents
Page
1 TEST RESULT CERTIFICATION ............................................................................................................................... 2

2 TEST SUMMARY .......................................................................................................................................................... 5

2.1 TEST SITE ............................................................................................................................................................ 6

3 GENERAL INFORMATION ..........................................................................................................................................7

3.1 GENERAL DESCRIPTION OF E.U.T. .................................................................................................................... 7

3.2 CHANNEL LIST ..................................................................................................................................................... 8
3.3 TEST SETUP CONFIGURATION ............................................................................................................................ 9
3.4 TEST MODE ......................................................................................................................................................... 9

4 EQUIPMENT DURING TEST .................................................................................................................................... 10

4.1 EQUIPMENTS LIST ............................................................................................................................................. 10

4.2 MEASUREMENT UNCERTAINTY ......................................................................................................................... 12
4.3 DESCRIPTION OF SUPPORT UNITS ................................................................................................................... 12

5 CONDUCTED EMISSION .......................................................................................................................................... 13

5.1 E.U.T. OPERATION ............................................................................................................................................13

5.2 EUT SETUP ....................................................................................................................................................... 13
5.3 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................................. 14
5.4 MEASUREMENT PROCEDURE ............................................................................................................................14
5.5 CONDUCTED EMISSION LIMIT ........................................................................................................................... 14
5.6 MEASUREMENT DESCRIPTION .......................................................................................................................... 14
5.7 CONDUCTED EMISSION TEST RESULT ............................................................................................................. 14

6 RADIATED SPURIOUS EMISSIONS ...................................................................................................................... 17

6.1 EUT OPERATION ...............................................................................................................................................17

6.2 TEST SETUP ...................................................................................................................................................... 18
6.3 SPECTRUM ANALYZER SETUP .......................................................................................................................... 19
6.4 TEST PROCEDURE .............................................................................................................................................20
6.5 SUMMARY OF TEST RESULTS ...........................................................................................................................21

7 CONDUCT BAND EDGE AND SPURIOUS EMISSIONS MEASUREMENT ....................................................28

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 Report No.: NCT24005386E-2

7.1 TEST PROCEDURE .............................................................................................................................................28

7.2 TEST RESULT .................................................................................................................................................... 29

8 6DB BANDWIDTH MEASUREMENT ...................................................................................................................... 34

8.1 TEST PROCEDURE .............................................................................................................................................34

8.2 TEST RESULT .................................................................................................................................................... 34

9 MAXIMUM PEAK OUTPUT POWER .......................................................................................................................37

9.1 TEST PROCEDURE .............................................................................................................................................37

9.2 TEST RESULT .................................................................................................................................................... 37

10 POWER SPECTRAL DENSITY .............................................................................................................................. 40

10.1 TEST PROCEDURE .......................................................................................................................................... 40

10.2 TEST RESULT .................................................................................................................................................. 40

11 ANTENNA APPLICATION ...................................................................................................................................... 43

11.1 ANTENNA REQUIREMENT .................................................................................................................................43

11.2 RESULT ............................................................................................................................................................ 43

12 TEST SETUP PHOTOS AND EUT PHOTOS .......................................................................................................44

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 Report No.: NCT24005386E-2

2 Test Summary
Test Items Test Requirement Result

Conduct Emission FCC part 15.207 PASS

Radiated Spurious Emissions FCC part 15.205/15.209 PASS

Conducted Spurious Emission FCC part 15. 247(d) PASS

Band edge FCC part 15.247(d) PASS

6dB&99% Bandwidth FCC part 15.247 (a)(2) PASS

Maximum Peak Output Power FCC part 15.247 (b)(3) PASS

Power Spectral Density FCC part 15.247 (e) PASS

Antenna Requirement FCC part 15.203/15.247 (c) PASS

Remark:

1. “N/A” denotes test is not applicable in this Test Report.

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 Report No.: NCT24005386E-2

2.1 Test Site

Site Description

EMC Lab. : Accredited by CNAS, 2022-09-27

The certificate is valid until 2028.01.07

The Laboratory has been assessed and proved to be in compliance with

CNAS-CL01:2006 (identical to ISO/IEC 17025:2017)

The Certificate Registration Number is L8251

Designation Number: CN1347

Test Firm Registration Number: 894804

Accredited by A2LA, June 14, 2023

The Certificate Registration Number is 6837.01

Accredited by Industry Canada, November 09, 2018

The Conformity Assessment Body Identifier is CN0150

Company Number: 30806

Name of Firm : Shenzhen NCT Testing Technology Co., Ltd.

Site Location : A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan
District, Shenzhen, People’s Republic of China

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 Report No.: NCT24005386E-2

3 General Information
3.1 General Description of E.U.T.

Product Name : Rainy75 Wireless Keyboard

Model Name : Rainy75RGB

Sample ID : 24005386-001#

Sample(s) Status: : Engineer sample

Series Model : QS4541113-3500mAh

Model Different.: : All the same except the model number.

Operating frequency : 2402-2480MHz

Number of Channels : 79 channels

Type of Modulation : GFSK

Antenna installation : PCB Antenna

Antenna Gain : 0.338dBi

Power supply : DC 3.7V by battery ; Charging input: DC 5V

Hardware Version : N/A

Software Version : N/A

Remark：the Antenna gain is provided by customer from Antenna spec. and the laboratory will
not be responsible for the accumulated calculation results which covers the information
provided by the applicant.

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 Report No.: NCT24005386E-2

3.2 Channel List

The EUT has been tested under its typical operating condition. Pre-defined engineering program for
regulatory testing used to control the EUT for staying in continuous transmitting. Only the worst case data
were reported.

The EUT has been associated with peripherals pursuant to ANSI C63.10-2013 and configuration operated in
a manner tended to maximize its emission characteristics in a typical application. Frequency range
investigated: radiation (9 KHz to the 10th harmonic of the highest fundamental frequency or to 40 GHz,
whichever is lower).

The details of test channels and bandwidth were for RF conductive measurement.

Channel List:

Frequency Frequency Frequency Frequency

Channel Channel Channel Channel
(MHz) (MHz) (MHz) (MHz)

0 2402 1 2403 2 2404 3 2405

4 2406 5 2407 6 2408 7 2409
8 2410 9 2411 10 2412 11 2413
12 2414 13 2415 14 2416 15 2417
16 2418 17 2419 18 2420 19 2421
20 2422 21 2423 22 2424 23 2425
24 2426 25 2427 26 2428 27 2429
28 2430 29 2431 30 2432 31 2433
32 2434 33 2435 34 2436 35 2437
36 2438 37 2439 38 2440 39 2441
40 2442 41 2443 42 2444 43 2445
44 2446 45 2447 46 2448 47 2449
48 2450 49 2451 50 2452 51 2453
52 2454 53 2455 54 2456 55 2457
56 2458 57 2459 58 2460 59 2461
60 2462 61 2463 62 2464 63 2465
64 2466 65 2467 66 2468 67 2469
68 2470 69 2471 70 2472 71 2473
72 2474 73 2475 74 2476 75 2477
76 2478 77 2479 78 2480 - -

Note:

1. Test of channel was included the lowest, middle and highest frequency in highest data rate and to
perform the test, then record on this report.

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 Report No.: NCT24005386E-2

3.3 Test Setup Configuration

Conducted Emission
AC Line DC Line
Adapter EUT

Radiated Emission(30MHz-1GHz)
USB Line or
PC EUT EUT

Radiated Emission(above 1GHz)

EUT

Conducted Spurious

EUT

3.4 Test Mode

Transmitting mode Keep the EUT in continuously transmitting mode.

Test Software bt_tool_v1.1.2

Power level setup < 1 dBm

Channel Frequency(MHz)

Low Channel 00 2402

Mid Channel 39 2441

High Channel 78 2480

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 Report No.: NCT24005386E-2

4 Equipment During Test

4.1 Equipments List
Conducted emission Test Equipment

Name Model No. Serial No. Manufacturer Date of Cal. Due Date
944 Shielded
944 Room / EMToni 2022/5/31 2025/5/30
Room
EMI Test Receiver ESPI 101604 Rohde & Schwarz 2023/6/21 2024/6/20
LISN ENV 216 102796 Rohde & Schwarz 2023/6/21 2024/6/20
LISN VN1-13S 004023 CRANAGE 2023/6/21 2024/6/20
RG223-
Cable NA RG 2023/6/21 2024/6/20
1500MM

Radiated emission & Radio Frequency Test Equipment

Name Model No. Serial No. Manufacturer Date of Cal. Due Date
966 Shielded Room 966 Room / EMToni 2022/5/31 2025/5/30
EMI Test Receiver ESCI 101178 Rohde & Schwarz 2023/6/21 2024/6/20

Amplifi
BBV 9743 B 00374 SCHNWARZBECK 2023/6/21 2024/6/20
（30MHz-1GHz）

Bilog Antenna
VULB9162 00473 SCHNWARZBECK 2023/3/19 2025/3/18
（30MHz-1GHz）

Horn antenna
BBHA 9120 D 02622 SCHNWARZBECK 2023/3/19 2025/3/18
（1GHz-18GHz）

Pream plifier
BBV 9718D 0024 SCHNWARZBECK 2023/6/21 2024/6/20
（1GHz-18GHz）

Spectrum Analyze
FSV 40 100952 Rohde & Schwarz 2023/6/21 2024/6/20
（10Hz-40GHz）

Pream plifier
BBV 9721 0056 SCHNWARZBECK 2023/6/21 2024/6/20
（18GHz-40GHz）
Double Ridge Guide
Horn Antenna SAS-574 588 A.H.System 2023/3/19 2025/3/18
（18GHz-40GHz）
Loop Antenna
FMZB1519B 014 SCHNWARZBECK 2023/6/21 2024/6/20
(9KHz-30MHz)
Amplifier
CVP 9222 C 00109 CHNWARZBECK 2023/6/21 2024/6/20
(9KHz-30MHz)

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 Report No.: NCT24005386E-2

MXG Signal
N9020A MY50510202 Agilent 2023/6/21 2024/6/20
Analyzer
MXG Vector Signal
N5182A MY50140020 Agilent 2023/6/21 2024/6/20
Generator
MXG Analog Signal
N5181A MY47420919 Agilent 2023/6/21 2024/6/20
Generator
Power Sensor TR1029-2 512364 Techoy 2023/6/21 2024/6/20
RF Swith TR1029-1 512364 Techoy 2023/6/21 2024/6/20
DA800-
Cable NA DA 2023/6/21 2024/6/20
4000MM
DA800-
Cable NA DA 2023/6/21 2024/6/20
11000MM

Other

Item Name Manufacturer Model Software version

1 EMC Conduction Test System AUDIX e3 6.120718
2 EMC radiation test system AUDIX e3 6.120718
3 RF test system TACHOY RFTest V1.0.0
4 RF communication test system TACHOY RFTest V1.0.0

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 Report No.: NCT24005386E-2

4.2 Measurement Uncertainty

Parameter Uncertainty
RF output power, conducted ±1.0dB
Power Spectral Density, conducted ±2.2dB
Radio Frequency ± 1 x 10-6
Bandwidth ± 1.5 x 10-6

Time ±2%
Duty Cycle ±2%
Temperature ±1°C
Humidity ±5%
DC and low frequency voltages ±3%
Conducted Emissions (150kHz~30MHz) 3.64dB
Radiated Emission(9kHz~30MHz) 4.51dB
Radiated Emission(30MHz~1GHz) 5.03dB
Radiated Emission(1GHz~25GHz) 4.74dB
Remark: The coverage Factor (k=2), and measurement Uncertainty for a level of Confidence of 95%

4.3 Description of Support Units

The EUT has been tested as an independent unit together with other necessary accessories or support
units. The following support units or accessories were used to form a representative test configuration
during the tests.

Item Equipment Mfr/Brand Model/Type No. Series No. Note

Rainy75 Wireless
E-1 WOB Rainy75RGB N/A EUT
Keyboard

E-2 Adapter N/A A18A-050100U-US2 N/A Auxiliary

E-3 PC N/A 300-15SK N/A Auxiliary

Note: (1)The support equipment was authorized by Declaration of Confirmation.

(2) For detachable type I/O cable should be specified the length in cm in『Length』column.

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 Report No.: NCT24005386E-2

5 Conducted Emission
Test Requirement : FCC CFR 47 Part 15 Section 15.207

Test Method : ANSI C63.10: 2013

Test Result : PASS

Frequency Range : 150kHz to 30MHz

Class/Severity : Class B

5.1 E.U.T. Operation

Operating Environment :

Temperature : 25.5 C

Humidity : 51 % RH

Atmospheric Pressure : 101.2kPa

5.2 EUT Setup

The conducted emission tests were performed using the setup accordance with the ANSI
C63.10:2013.

0.4m

EUT Receiver PC

0.8m
0.8m

LISN

:50 Terminator

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 Report No.: NCT24005386E-2

5.3 Test SET-UP (Block Diagram of Configuration)

Test Receiver

AC Mains

L.I.S.N EUT

5.4 Measurement Procedure

1. The EUT was placed on a table, which is 0.8m above ground plane.

2. Maximum procedure was performed on the six highest emissions to ensure EUT compliance.

3. Repeat above procedures until all frequency measured was complete.

5.5 Conducted Emission Limit

Conducted Emission
Frequency(MHz) Quasi-peak Average
0.15-0.5 66-56 56-46
0.5-5.0 56 46
5.0-30.0 60 50
Note:
1. The lower limit shall apply at the transition frequencies
2.The limit decreases in line with the logarithm of the frequency in the range of 0.15 to 0.50MHz.

5.6 Measurement Description

The maximised peak emissions from the EUT was scanned and measured for both the Live and Neutral
Lines. Quasi-peak & average measurements were performed if peak emissions were within 6dB of the
average limit line.

5.7 Conducted Emission Test Result

Pass

Conducted emission at both 120V & 240V is assessed, and emission at 120V represents the worst
case. All the modulation modes were tested the data of the worst mode (GFSK) are recorded in the
following pages and the others modulation methods do not exceed the limits.

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 Report No.: NCT24005386E-2

Channel: Middle Phase : L

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 Report No.: NCT24005386E-2

Channel: Middle Phase : N

Notes:
1.An initial pre-scan was performed on the line and neutral lines with peak detector.
2.Quasi-Peak and Average measurement were performed at the frequencies with maximized peak
emission.
3.Mesurement Level = Reading level + Correct Factor

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 Report No.: NCT24005386E-2

6 Radiated Spurious Emissions

Test Requirement : FCC CFR47 Part 15 Section 15.209 & 15.247,
Test Method : ANSI C63.10:2013
Test Result : PASS
Measurement Distance : 3m
Limit : See the follow table

Field Strength Field Strength Limit at 3m Measurement Dist

Frequency (MHz) Distance
uV/m uV/m dBuV/m
(m)
0.009 ~ 0.490 2400/F(kHz) 300 10000 * 2400/F(kHz) 20log(2400/F(kHz)) + 80
0.490 ~ 1.705 24000/F(kHz) 30 100 * 24000/F(kHz) 20log(24000/F(kHz)) + 40
1.705 ~ 30 30 30 100 * 30 20log(30) + 40
30 ~ 88 100 3 100 20log(100)
88 ~ 216 150 3 150 20log(150)
216 ~ 960 200 3 200 20log(200)
Above 960 500 3 500 20log(500)

6.1 EUT Operation

Operating Environment :
Temperature : 23.5 C
Humidity : 51.1 % RH
Atmospheric Pressure : 101.2kPa

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 Report No.: NCT24005386E-2

6.2 Test Setup

The radiated emission tests were performed in the 3m Semi- Anechoic Chamber test site

The test setup for emission measurement below 30MHz

The test setup for emission measurement from 30 MHz to 1 GHz.

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 Report No.: NCT24005386E-2

The test setup for emission measurement above 1 GHz

6.3 Spectrum Analyzer Setup

Frequency Detector RBW VBW Remark

Below 30MHz -- 10kHz 10kHz --

Quasi-peak
Receiver Setup 30MHz ~ 1GHz Quasi-peak 120kHz 300kHz
Value

Peak 1MHz 3MHz Peak Value

Above 1GHz
RMS 1MHz 3MHz Average Value

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 Report No.: NCT24005386E-2

6.4 Test Procedure

1. The testing follows the guidelines in Spurious Radiated Emissions of ANSI C63.10-2013.

2. Below 1000MHz, The EUT was placed on a turn table which is 0.8m above ground plane. And above
1000MHz, The EUT was placed on a styrofoam table which is 1.5m above ground plane.

3. The EUT was set 3 meters from the interference receiving antenna, which was mounted on the top of a
variable height antenna tower.

4. For each suspected emission, the EUT was arranged to its worst case and then tune the Antenna tower
(From 1m to 4m) and turntable (from 0 degree to 360 degree) to find the maximum reading. A pre-amp
and a high pass filter are used for the test in order to get better signal level to comply with the guidelines.

5. Set to the maximum power setting and enable the EUT transmit continuously.

6. Final measurement (Above 1GHz): The frequency range will be divided into different sub ranges
depending of the frequency range of the used horn antenna. The EMI Receiver set to peak and average
mode and a resolution bandwidth of 1MHz. The measurement will be performed in horizontal and vertical
polarization of the measuring antenna and while rotating the EUT in its vertical axis in the range of 0
degree to 360 degree in order to have the antenna inside the cone of radiation.

7. Test Procedure of measurement (For Above 1GHz):

1) Monitor the frequency range at horizontal polarization and move the antenna over all sides of the EUT(if
necessary move the EUT to another orthogonal axis).

2) Change the antenna polarization and repeat 1) with vertical polarization.

3) Make a hardcopy of the spectrum.

4) Measure the frequency of the detected emissions with a lower span and resolution bandwidth to increase
the accuracy and note the frequency value.

5) Change the analyser mode to Clear/ Write and found the cone of emission.

6) Rotate and move the EUT, so that the measuring distance can be enlarged to 3m and the antenna will be
still inside the cone of emission.

7) Measure the level of the detected frequency with the correct resolution bandwidth, with the antenna
polarization and azimuth and the peak and average detector, which causes the maximum emission.

8) Repeat steps 1) to 7) for the next antenna spot if the EUT is larger than the antenna beamwidth.

8. The radiation measurements are tested under 3-axes(X,Y,Z) position(X denotes lying on the table, Y
denotes side stand and Z denotes vertical stand), After pre-test, It was found that the worse radiation
emission was get at the X position. So the data shown was the X position only.

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 Report No.: NCT24005386E-2

6.5 Summary of Test Results

Test Frequency: 9KHz-30MHz

Freq. Ant.Pol. Emission Level Limit 3m Over

(MHz) H/V (dBuV/m) (dBuV/m) (dB)

-- -- -- -- >20

Note:

The amplitude of spurious emission that is attenuated by more than 20dB below the permissible limit
has no need to be reported.

Distance extrapolation factor =40log(Specific distance/ test distance)( dB);

Limit line=Specific limits(dBuV) + distance extrapolation factor.

Test Frequency: 30MHz ~ 1GHz

Pass.

Please refer to the following test plots for the worst test mode (GFSK (CH00: 2402MHz)).

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 Report No.: NCT24005386E-2

Temperature: 26℃ Relative Humidity: 54%

Pressure: 101 kPa Polarization: Horizontal

Test Voltage: DC 5V

Remark:Emission Level=Reading+Cable Loss+ANT Factor-AMP Factor

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 Report No.: NCT24005386E-2

Temperature: 26℃ Relative Humidity: 54%

Pressure: 101 kPa Polarization: Vertical

Test Voltage: DC 5V

Remark:Emission Level=Reading+Cable Loss+ANT Factor-AMP Factor

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 Report No.: NCT24005386E-2

Test Frequency 1GHz-25GHz:

Meter Pre- Cable Antenna Emission
Polar Frequency Limits Margin
Reading amplifier Loss Factor Level Detector
(H/V) Type
(MHz) (dBuV) (dB) (dB) (dB) (dBuV/m) (dBuV/m) (dB)

Low Channel:2402MHz

V 4804.00 53.69 30.55 5.77 24.66 53.57 74.00 -20.43 Pk

V 4804.00 43.78 30.55 5.77 24.66 43.66 54.00 -10.34 AV

V 7206.00 53.25 30.33 6.32 24.55 53.79 74.00 -20.21 Pk

V 7206.00 43.39 30.33 6.32 24.55 43.93 54.00 -10.07 AV

V 9608.00 53.16 30.85 7.45 24.69 54.45 74.00 -19.55 Pk

V 9608.00 42.15 30.85 7.45 24.69 43.44 54.00 -10.56 AV

V 12010.00 53.27 31.02 8.99 25.57 56.81 74.00 -17.19 Pk

V 12010.00 42.35 31.02 8.99 25.57 45.89 54.00 -8.11 AV

H 4804.00 53.11 30.55 5.77 24.66 52.99 74.00 -21.01 Pk

H 4804.00 43.09 30.55 5.77 24.66 42.97 54.00 -11.03 AV

H 7206.00 53.25 30.33 6.32 24.55 53.79 74.00 -20.21 Pk

H 7206.00 42.29 30.33 6.32 24.55 42.83 54.00 -11.17 AV

H 9608.00 53.58 30.85 7.45 24.69 54.87 74.00 -19.13 Pk

H 9608.00 43.36 30.85 7.45 24.69 44.65 54.00 -9.35 AV

H 12010.00 51.57 31.02 8.99 25.57 55.11 74.00 -18.89 Pk

H 12010.00 42.19 31.02 8.99 25.57 45.73 54.00 -8.27 AV

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 Report No.: NCT24005386E-2

Meter Pre- Cable Antenna Emission

Polar Frequency Limits Margin
Reading amplifier Loss Factor Level Detector
(H/V) Type
(MHz) (dBuV) (dB) (dB) (dB) (dBuV/m) (dBuV/m) (dB)

Middle Channel:2439MHz

V 4878.00 53.25 30.55 5.77 24.66 53.13 74.00 -20.87 Pk

V 4878.00 42.36 30.55 5.77 24.66 42.24 54.00 -11.76 AV

V 7317.00 53.68 30.33 6.32 24.55 54.22 74.00 -19.78 Pk

V 7317.00 43.11 30.33 6.32 24.55 43.65 54.00 -10.35 AV

V 9756.00 53.88 30.85 7.45 24.69 55.17 74.00 -18.83 Pk

V 9756.00 43.89 30.85 7.45 24.69 45.18 54.00 -8.82 AV

V 12195.00 52.27 31.02 8.99 25.57 55.81 74.00 -18.19 Pk

V 12195.00 42.18 31.02 8.99 25.57 45.72 54.00 -8.28 AV

H 4878.00 52.27 30.55 5.77 24.66 52.15 74.00 -21.85 Pk

H 4878.00 41.69 30.55 5.77 24.66 41.57 54.00 -12.43 AV

H 7317.00 52.78 30.33 6.32 24.55 53.32 74.00 -20.68 Pk

H 7317.00 41.63 30.33 6.32 24.55 42.17 54.00 -11.83 AV

H 9756.00 52.19 30.85 7.45 24.69 53.48 74.00 -20.52 Pk

H 9756.00 41.78 30.85 7.45 24.69 43.07 54.00 -10.93 AV

H 12195.00 53.93 31.02 8.99 25.57 57.47 74.00 -16.53 Pk

H 12195.00 41.39 31.02 8.99 25.57 44.93 54.00 -9.07 AV

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 Report No.: NCT24005386E-2

Meter Pre- Cable Antenna Emission

Polar Frequency Limits Margin
Reading amplifier Loss Factor Level Detector
(H/V) Type
(MHz) (dBuV) (dB) (dB) (dB) (dBuV/m) (dBuV/m) (dB)

High Channel:2478MHz

V 4956.00 53.99 30.55 5.77 24.66 53.87 74.00 -20.13 Pk

V 4956.00 43.15 30.55 5.77 24.66 43.03 54.00 -10.97 AV

V 7434.00 52.27 30.33 6.32 24.55 52.81 74.00 -21.19 Pk

V 7434.00 42.62 30.33 6.32 24.55 43.16 54.00 -10.84 AV

V 9912.00 54.58 30.85 7.45 24.69 55.87 74.00 -18.13 Pk

V 9912.00 42.33 30.85 7.45 24.69 43.62 54.00 -10.38 AV

V 12390.00 54.85 31.02 8.99 25.57 58.39 74.00 -15.61 Pk

V 12390.00 42.78 31.02 8.99 25.57 46.32 54.00 -7.68 AV

H 4956.00 53.23 30.55 5.77 24.66 53.11 74.00 -20.89 Pk

H 4956.00 43.58 30.55 5.77 24.66 43.46 54.00 -10.54 AV

H 7434.00 54.33 30.33 6.32 24.55 54.87 74.00 -19.13 Pk

H 7434.00 43.45 30.33 6.32 24.55 43.99 54.00 -10.01 AV

H 9912.00 52.78 30.85 7.45 24.69 54.07 74.00 -19.93 Pk

H 9912.00 42.12 30.85 7.45 24.69 43.41 54.00 -10.59 AV

H 12390.00 52.97 31.02 8.99 25.57 56.51 74.00 -17.49 Pk

H 12390.00 42.55 31.02 8.99 25.57 46.09 54.00 -7.91 AV

Note: 1. Emission Level = Meter Reading + Antenna Factor + Cable Loss – Pre-amplifier,

Margin= Emission Level - Limit

2. If peak below the average limit, the average emission was no test.

3. The amplitude of spurious emissions which are attenuated by more than 20dB below the permissible
value has no need to be reported.

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 Report No.: NCT24005386E-2

Spurious Emission in Restricted Band 2310-2390MHz and 2483.5-2500MHz

Meter Pre- Cable Antenna Emission

Polar Frequency Limit Detec
Reading Loss Factor level (dBuV tor
amplifier Result
(H/V) (MHz) /m) Type
(dBuV) (dB) (dB/m) (dBuV/m)
(dB)

Low Channel: 2402MHz

H 2390.00 58.66 30.22 4.85 23.98 57.27 74.00 PK PASS

H 2390.00 48.23 30.22 4.85 23.98 46.84 54.00 AV PASS

H 2400.00 59.22 30.22 4.85 23.98 57.83 74.00 PK PASS

H 2400.00 48.58 30.22 4.85 23.98 47.19 54.00 AV PASS

V 2390.00 60.23 30.22 4.85 23.98 58.84 74.00 PK PASS

V 2390.00 47.86 30.22 4.85 23.98 46.47 54.00 AV PASS

V 2400.00 60.12 30.22 4.85 23.98 58.73 74.00 PK PASS

V 2400.00 47.86 30.22 4.85 23.98 46.47 54.00 AV PASS

GFSK
High Channel: 2478MHz

H 2483.50 58.78 30.22 4.85 23.98 57.39 74.00 PK PASS

H 2483.50 48.12 30.22 4.85 23.98 46.73 54.00 AV PASS

H 2500.00 60.06 30.22 4.85 23.98 58.67 74.00 PK PASS

H 2500.00 48.68 30.22 4.85 23.98 47.29 54.00 AV PASS

V 2483.50 61.06 30.22 4.85 23.98 59.67 74.00 PK PASS

V 2483.50 48.56 30.22 4.85 23.98 47.17 54.00 AV PASS

V 2500.00 61.08 30.22 4.85 23.98 59.69 74.00 PK PASS

V 2500.00 48.66 30.22 4.85 23.98 47.27 54.00 AV PASS

Remark:

1. Emission Level = Meter Reading + Antenna Factor + Cable Loss – Pre-amplifier, Margin= Emission Level - Limit

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 Report No.: NCT24005386E-2

7 Conduct Band Edge And Spurious Emissions Measurement

Test Requirement : Section 15.247(d) In addition, radiated emissions which fall in the
restricted bands. as defined in Section 15.205(a), must also
comply with the radiated emission limits specified in Section
15.209(a) (see Section 15.205(c)).
Test Method : ANSI C63.10:2013
Test Limit : Regulation 15.247 (d),In any 100 kHz bandwidth outside the
frequency band in which the spread spectrum or digitally
modulated intentional radiator is operating, the radio frequency
power that is produced by the intentional radiator shall be at least
20 dB below that in the 100 kHz bandwidth within the band that
contains the highest level of the desired power, based on either an
RF conducted or a radiated measurement, provided the
transmitter demonstrates compliance with the peak conducted
power limits. If the transmitter complies with the conducted power
limits based on the use of RMS averaging over a time interval, as
permitted under paragraph (b)(3) of this section, the attenuation
required under this paragraph shall be 30 dB instead of 20 dB.
Attenuation below the general limits specified in §15.209(a) is not
required. In addition, radiated emissions which fall in the restricted
bands, as defined in §15.205(a), must also comply with the
radiated emission limits specified in §15.209(a) (see §15.205(c)).

7.1 Test Procedure

1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the
spectrum;
2. Set the spectrum analyzer: RBW = 100kHz, VBW = 300kHz, Sweep = auto
Detector function = peak, Trace = max hold

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 Report No.: NCT24005386E-2

7.2 Test Result

GFSK: Band Edge, Left Side

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 Report No.: NCT24005386E-2

GFSK: Band Edge, Right Side

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 Report No.: NCT24005386E-2

Lowest channel

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 Report No.: NCT24005386E-2

Mid channel

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 Report No.: NCT24005386E-2

Highest channel

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 Report No.: NCT24005386E-2

8 6dB Bandwidth Measurement

Test Requirement : FCC CFR47 Part 15 Section 15.247
Test Method : ANSI C63.10:2013

Systems using digital modulation techniques may operate in the 902-928

Test Limit MHz, 2400-2483.5 MHz, and 5725-5850 MHz bands. The minimum 6 dB
bandwidth shall be at least 500 kHz.

8.1 Test Procedure

1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the
spectrum;
2. Set the spectrum analyzer: RBW = 100kHz, VBW = 300kHz
8.2 Test Result

Channel Channel -6dB Occupy Limit 99% Occupy Limit

number frequency Bandwidth (KHz)
(MHz) (KHz) Bandwidth (MHz) (KHz)

00 2402 506.4 >500 / /

39 2441 518.3 >500 / /

78 2480 527.9 >500 / /

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 Report No.: NCT24005386E-2

-6dB Occupy Bandwidth

CH00

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 Report No.: NCT24005386E-2

CH39

CH78

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 Report No.: NCT24005386E-2

9 Maximum Peak Output Power

Test Requirement : FCC CFR47 Part 15 Section 15.247
Test Method : ANSI C63.10:2013
Test Limit :
Regulation 15.247 (b)(3), For systems using digital modulation in the 902-
928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz bands: 1 Watt. As an
alternative to a peak power measurement, compliance with the one Watt
limit can be based on a measurement of the maximum conducted output
power.

9.1 Test Procedure

1. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The
path loss was compensated to the results for each measurement.

2. Set to the maximum power setting and enable the EUT transmit continuously.

3. Measure the conducted output power and record the results in the test report.

9.2 Test Result

Channel
Channel Peak Power Peak Power
Frequency Verdict
number Output(dBm) Limit(dBm)
(MHz)

00 2402 -3.471 30 PASS

39 2441 -3.415 30 PASS

78 2480 -3.495 30 PASS

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 Report No.: NCT24005386E-2

CH00

CH39

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 Report No.: NCT24005386E-2

CH78

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 Report No.: NCT24005386E-2

10 Power Spectral density

Test Requirement : FCC CFR47 Part 15 Section 15.247
Test Method : ANSI C63.10:2013
Test Limit : Regulation 15.247(f) The power spectral density conducted from the
intentional radiator to the antenna due to the digital modulation
operation of the hybrid system, with the frequency hopping operation
turned off, shall not be greater than 8 dBm in any 3 kHz band during
any time interval of continuous transmission.

10.1 Test Procedure

1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the
spectrum.

2. Set the spectrum analyzer: RBW = 3kHz. VBW = 10kHz , Span = 1.5 times the DTS channel bandwidth(6
dB bandwidth). Sweep = auto; Detector Function = Peak. Trace = Max hold.

3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks
of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot.

10.2 Test Result

Channel Channel Measurement level Required Pass/Fail

number frequency (MHz) (dBm) Limit
(dBm/3kHz)
PSD/3kHz
00 2402 -23.325 8 PASS
39 2441 -23.553 8 PASS
78 2480 -23.928 8 PASS

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 Report No.: NCT24005386E-2

CH00

CH39

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 Report No.: NCT24005386E-2

CH78

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 Report No.: NCT24005386E-2

11 Antenna Application
11.1 Antenna Requirement
15.203 requirement:
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. The use of a
permanently attached antenna or of an antenna that uses a unique coupling to the
intentional radiator, the manufacturer may design the unit so that a broken antenna
can be replaced by the user, but the use of a standard antenna jack or electrical
connector is prohibited.
15.247(c) (1)(i) requirement:
Systems operating in the 2400-2483.5 MHz band that is used exclusively for fixed.
Point-to-point operations may employ transmitting antennas with directional gain
greater than 6dBi provided the maximum conducted output power of the intentional
radiator is reduced by 1 dB for every 3 dB that the directional gain of the antenna
exceeds 6dBi.

11.2 Result
The antenna is PCB antenna, the best case gain of the antennas is 0.338 dBi,
reference to the attachment for details.

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 Report No.: NCT24005386E-2

12 Test Setup Photos and EUT Photos

Please see the attachment for details.

******THE END REPORT******

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