HTT202504144F01 Test Report EDR 2BC8W-M108

Dongguan Ruige Electronics Co., LTD M108 TWS Wireless earphone 2BC8W-M108 2BC8WM108 m108

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Shenzhen HTT Technology Co., Ltd.

Report No.: HTT202504144F01
TEST Report

Applicant:

Dongguan Ruige Electronics Co., LTD

Address of Applicant: Manufacturer :

Room 201, Building 2, No. 60 Xinyang Middle Road, Lincun, Tangxia Town, Dongguan City, Guangdong Province
Dongguan Ruige Electronics Co., LTD

Address of Manufacturer :

Room 201, Building 2, No. 60 Xinyang Middle Road, Lincun, Tangxia Town, Dongguan City, Guangdong Province

Equipment Under Test (EUT)

Product Name:

TWS Wireless earphone

Model No.:

M108

Series model:

N/A

Trade Mark: FCC ID:

N/A 2BC8W-M108

Applicable standards: Date of sample receipt:

FCC CFR Title 47 Part 15 Subpart C Section 15.247 Apr. 01, 2025

Date of Test:

Apr. 01, 2025 ~ Apr. 08, 2025

Date of report issued: Test Result :

Apr. 08, 2025 PASS *

* In the configuration tested, the EUT complied with the standards specified above.

This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver.
Page 1 of 45

1. Version
Version No. 00

Date Apr. 08, 2025

Report No.: HTT202504144F01
Description Original

Tested/ Prepared By Check By: Approved By :

Project Engineer

Date:

Reviewer

Date:

Authorized Signature

Date:

Apr. 08, 2025 Apr. 08, 2025 Apr. 08, 2025

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 2 of 45

Report No.: HTT202504144F01

2. Contents

Page

1. VERSION........................................................................................................................................................2
2. CONTENTS ....................................................................................................................................................3
3. TEST SUMMARY ...........................................................................................................................................4
4. GENERAL INFORMATION............................................................................................................................5
4.1. GENERAL DESCRIPTION OF EUT ................................................................................................................5 4.2. TEST MODE ...............................................................................................................................................7 4.3. DESCRIPTION OF SUPPORT UNITS ..............................................................................................................7 4.4. DEVIATION FROM STANDARDS ....................................................................................................................7 4.5. ABNORMALITIES FROM STANDARD CONDITIONS...........................................................................................7 4.6. TEST FACILITY ...........................................................................................................................................7 4.7. TEST LOCATION .........................................................................................................................................7 4.8. ADDITIONAL INSTRUCTIONS ........................................................................................................................7
5. TEST INSTRUMENTS LIST...........................................................................................................................8
6. TEST RESULTS AND MEASUREMENT DATA ...........................................................................................9
6.1. CONDUCTED EMISSIONS ............................................................................................................................9 6.2. CONDUCTED PEAK OUTPUT POWER .........................................................................................................12 6.3. 20DB EMISSION BANDWIDTH ....................................................................................................................13 6.4. FREQUENCIES SEPARATION .....................................................................................................................17 6.5. HOPPING CHANNEL NUMBER....................................................................................................................19 6.6. DWELL TIME ............................................................................................................................................21 6.7. BAND EDGE.............................................................................................................................................26
6.7.1. Conducted Emission Method .........................................................................................................26 6.7.2. Radiated Emission Method ............................................................................................................30 6.8. SPURIOUS EMISSION................................................................................................................................32 6.8.1. Conducted Emission Method .........................................................................................................32 6.8.2. Radiated Emission Method ............................................................................................................37 6.9. ANTENNA REQUIREMENT..........................................................................................................................44
7. TEST SETUP PHOTO..................................................................................................................................45
8. EUT CONSTRUCTIONAL DETAILS ...........................................................................................................45

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 3 of 45

Report No.: HTT202504144F01

3. Test Summary
Test Item Antenna Requirement AC Power Line Conducted Emission Conducted Peak Output Power 20dB Occupied Bandwidth Carrier Frequencies Separation Hopping Channel Number
Dwell Time Radiated Emission
Band Edge

Section in CFR 47 15.203/15.247 (c)
15.207 15.247 (b)(1) 15.247 (a)(1) 15.247 (a)(1) 15.247 (a)(1)(iii) 15.247 (a)(1)(iii) 15.205/15.209
15.247(d)

Remarks: 1. Pass: The EUT complies with the essential requirements in the standard. 2. Test according to ANSI C63.10:2013

Result Pass Pass Pass Pass Pass Pass Pass Pass Pass

Measurement Uncertainty

Test Item

Frequency Range

Measurement Uncertainty Notes

Radiated Emission

9KHz~30MHz

3.12 dB

(1)

Radiated Emission

30~1000MHz

4.37 dB

(1)

Radiated Emission

1~18GHz

5.40 dB

(1)

Radiated Emission

18-40GHz

5.45 dB

(1)

Conducted Disturbance

0.15~30MHz

2.68 dB

(1)

Note (1): The measurement uncertainty is for coverage factor of k=2 and a level of confidence of 95%.

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 4 of 45

Report No.: HTT202504144F01

4. General Information
4.1. General Description of EUT

Product Name:

TWS Wireless earphone

Model No.:

M108

Series model: Test sample(s) ID:
Operation Frequency: Channel numbers:

N/A HTT202504144-1(Engineer sample) HTT202504144-2(Normal sample) 2402MHz~2480MHz 79

Channel separation:

1MHz

Modulation type:

GFSK, /4-DQPSK, 8-DPSK

Antenna Type: Antenna gain: Power Supply:
Adapter Information (Auxiliary test provided by the lab):

Chip Antenna
2.70dBi Headphone battery capacity:3.7V/30mAh (polymer battery) Charging bin battery capacity:3.7V/300mAh (polymer battery) Charging interface :USB Type-C Mode: GS-0500200 Input: AC100-240V, 50/60Hz, 0.3A max Output: DC 5V, 2A

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 5 of 45

Report No.: HTT202504144F01

Operation Frequency each of channel Channel Frequency Channel Frequency

Channel

Frequency

Channel

Frequency

1

2402MHz

21

2422MHz

41

2442MHz

61

2462MHz

2

2403MHz

22

2423MHz

42

2443MHz

62

2463MHz

3

2404MHz

23

2424MHz

43

2444MHz

63

2464MHz

4

2405MHz

24

2425MHz

44

2445MHz

64

2465MHz

5

2406MHz

25

2426MHz

45

2446MHz

65

2466MHz

6

2407MHz

26

2427MHz

46

2447MHz

66

2467MHz

7

2408MHz

27

2428MHz

47

2448MHz

67

2468MHz

8

2409MHz

28

2429MHz

48

2449MHz

68

2469MHz

9

2410MHz

29

2430MHz

49

2450MHz

69

2470MHz

10

2411MHz

30

2431MHz

50

2451MHz

70

2471MHz

11

2412MHz

31

2432MHz

51

2452MHz

71

2472MHz

12

2413MHz

32

2433MHz

52

2453MHz

72

2473MHz

13

2414MHz

33

2434MHz

53

2454MHz

73

2474MHz

14

2415MHz

34

2435MHz

54

2455MHz

74

2475MHz

15

2416MHz

35

2436MHz

55

2456MHz

75

2476MHz

16

2417MHz

36

2437MHz

56

2457MHz

76

2477MHz

17

2418MHz

37

2438MHz

57

2458MHz

77

2478MHz

18

2419MHz

38

2439MHz

58

2459MHz

78

2479MHz

19

2420MHz

39

2440MHz

59

2460MHz

79

2480MHz

20

2421MHz

40

2441MHz

60

2461MHz

Note:
In section 15.31(m), regards to the operating frequency range over 10 MHz, the Lowest frequency, the middle frequency, and the highest frequency of channel were selected to perform the test, and the selected channel see below:

Channel The lowest channel The middle channel The Highest channel

Frequency 2402MHz 2441MHz 2480MHz

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 6 of 45

Report No.: HTT202504144F01

4.2. Test mode
Transmitting mode

Keep the EUT in continuously transmitting mode.

Remark: During the test, the test voltage was tuned from 85% to 115% of the nominal rated supply voltage, and found that the worst case was under the nominal rated supply condition. So the report just shows that condition's data.
4.3. Description of Support Units
None.

4.4. Deviation from Standards

None. 4.5. Abnormalities from Standard Conditions

None. 4.6. Test Facility
The test facility is recognized, certified, or accredited by the following organizations:

FCC-Registration No.: 779513 Designation Number: CN1319 Shenzhen HTT Technology Co.,Ltd. has been accredited on the US Federal Communications Commission list of test facilities recognized to perform electromagnetic emissions measurements.

A2LA-Lab Cert. No.: 6435.01 Shenzhen HTT Technology Co.,Ltd. has been listed by American Association for Laboratory Accreditation to perform electromagnetic emission measurement.

The 3m-Semi anechoic test site fulfils CISPR 16-1-4 according to ANSI C63.10 and CISPR 16-1-4:2010.
4.7. Test Location
All tests were performed at:

Shenzhen HTT Technology Co.,Ltd. 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23595200 Fax: 0755-23595201

4.8. Additional Instructions

Test Software

Special AT test command provided by manufacturer to Keep the EUT in continuously transmitting mode and hopping mode

Power level setup

Default

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 7 of 45

Report No.: HTT202504144F01

5. Test Instruments list

Item

Test Equipment

3m Semi- Anechoic 1
Chamber

2

Control Room

3

EMI Test Receiver

4 Spectrum Analyzer

5

Coaxial Cable

6

Coaxial Cable

7

Coaxial Cable

8

Coaxial Cable

Composite logarithmic 9
antenna

10

Horn Antenna

11

Loop Antenna

Manufacturer
Shenzhen C.R.T technology co., LTD
Shenzhen C.R.T technology co., LTD
Rohde&Schwar Rohde&Schwar
ZDecl ZDecl ZDecl ZDecl

Model No. 9*6*6

Inventory Cal.Date

No.

(mm-dd-yy)

HTT-E028 Aug. 10 2024

4.8*3.5*3.0

HTT-E030 Aug. 10 2024

ESCI7

HTT-E022

FSP

HTT-E037

ZT26-NJ-NJ-0.6M HTT-E018

ZT26-NJ-SMAJ-2M HTT-E019

ZT26-NJ-SMAJ-0.6M HTT-E020

ZT26-NJ-SMAJ-8.5M HTT-E021

Apr. 26 2024 Apr. 26 2024 Apr. 26 2024 Apr. 26 2024 Apr. 26 2024 Apr. 26 2024

Schwarzbeck

VULB 9168

HTT-E017 May. 21 2024

Schwarzbeck Zhinan

BBHA9120D ZN30900C

HTT-E016 May. 20 2024 HTT-E039 Apr. 26 2024

12

Horn Antenna

Beijing Hangwei Dayang OBH100400

HTT-E040 Apr. 26 2024

low frequency 13
Amplifier

high-frequency 14
Amplifier

Variable frequency power 15
supply

16 EMI Test Receiver

17

Artificial Mains

18

Artificial Mains

Sonoma Instrument
HP
Shenzhen Anbiao Instrument Co., Ltd Rohde & Schwarz Rohde & Schwarz Rohde & Schwarz

310
8449B
ANB-10VA ESCS30 ESH3-Z5 ENV-216

HTT-E015 Apr. 26 2024

HTT-E014 Apr. 26 2024

HTT-082 Apr. 26 2024

HTT-E004 HTT-E006 HTT-E038

Apr. 26 2024 May. 23 2024 May. 23 2024

19

Cable Line

Robinson

Z302S-NJ-BNCJ-1.5M HTT-E001 Apr. 26 2024

20

Attenuator

Robinson

Variable frequency power Shenzhen Yanghong

21

supply

Electric Co., Ltd

Shenzhen C.R.T

22

Control Room

technology co., LTD

23

DC power supply

Agilent

24 EMI Test Receiver

Agilent

25 Analog signal generator

Agilent

26 Vector signal generator

Agilent

27

Power sensor

Keysight

Temperature and 28
humidity meter

Shenzhen Anbiao Instrument Co., Ltd

Radiated Emission Test 29
Software

Farad

Conducted Emission 30
Test Software

Farad

31

RF Test Software

panshanrf

6810.17A YF-6505KVA

HTT-E007 HTT-E032

Apr. 26 2024 Apr. 26 2024

8*4*3.5
E3632A N9020A N5181A N5182A U2021XA
TH10R

HTT-E029 Aug. 10 2024

HTT-E023 HTT-E024 HTT-E025 HTT-E026 HTT-E027

Apr. 26 2024 Apr. 26 2024 Apr. 26 2024 Apr. 26 2024 Apr. 26 2024

HTT-074 Apr. 28 2024

EZ-EMC

N/A

N/A

EZ-EMC

N/A

N/A

TST

N/A

N/A

Cal.Due date (mm-dd-yy) Aug. 09 2027
Aug. 09 2027 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025 May. 20 2025 May. 19 2025 Apr. 25 2025 Apr. 25 2025
Apr. 25 2025
Apr. 25 2025
Apr. 25 2025 Apr. 25 2025 May. 22 2025 May. 22 2025 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025
Aug. 09 2027 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025 Apr. 25 2025 Apr. 27 2025
N/A
N/A N/A

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 8 of 45

Report No.: HTT202504144F01

6. Test results and Measurement Data

6.1. Conducted Emissions

Test Requirement:

FCC Part15 C Section 15.207

Test Method:

ANSI C63.10:2013

Test Frequency Range:

150KHz to 30MHz

Class / Severity:

Class B

Class B

Receiver setup:

RBW=9KHz, VBW=30KHz, Sweep time=auto

Limit:

Frequency range (MHz)

Limit (dBuV)

Quasi-peak

Average

0.15-0.5

66 to 56*

56 to 46*

0.5-5

56

46

5-30

60

50

* Decreases with the logarithm of the frequency.

Test setup:

Test procedure:
Test Instruments: Test mode: Test environment: Test voltage: Test results:

1. The E.U.T and simulators are connected to the main power through a line impedance stabilization network (L.I.S.N.). This provides a 50ohm/50uH coupling impedance for the measuring equipment.
2. The peripheral devices are also connected to the main power through a LISN that provides a 50ohm/50uH coupling impedance with 50ohm termination. (Please refer to the block diagram of the test setup and photographs).
3. Both sides of A.C. line are checked for maximum conducted interference. In order to find the maximum emission, the relative positions of equipment and all of the interface cables must be changed according to ANSI C63.10:2013 on conducted measurement.

Refer to section 6.0 for details

Refer to section 5.2 for details

Temp.:

25 C

Humid.: 52%

Press.:

1012mbar

AC 120V, 60Hz

Pass

Remark: Based on all tested data, the EUT complied with the FCC Part 15.207 standard limit for a wireless device, and with the worst case as below:

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 9 of 45

Measurement data: Line:

Report No.: HTT202504144F01

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 10 of 45

Neutral:

Report No.: HTT202504144F01

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. Final Level =Receiver Read level + LISN Factor + Cable Los

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 11 of 45

Report No.: HTT202504144F01

6.2. Conducted Peak Output Power

Test Requirement:

FCC Part15 C Section 15.247 (b)(3)

Test Method:

ANSI C63.10:2013

Limit:

30dBm(for GFSK),20.97dBm(for EDR)

Test setup:

Test Instruments: Test mode: Test results: Test environment:

Refer to section 6.0 for details

Refer to section 5.2 for details Pass

Temp.:

25 C

Humid.:

52%

Press.:

1012mbar

Measurement Data

Mode

TX Type

GFSK

SISO

Pi/4DQPSK SISO

8DPSK

SISO

Frequency (MHz) 2402 2441 2480 2402 2441 2480 2402 2441 2480

Packet Type DH5 DH5 DH5 2DH5 2DH5 2DH5 3DH5 3DH5 3DH5

Maximum Peak Conducted Output Power (dBm)

ANT1

Limit

2.29

<=30

2.35

<=30

2.04

<=30

2.95

<=20.97

3.08

<=20.97

2.79

<=20.97

3.33

<=20.97

3.41

<=20.97

3.19

<=20.97

Verdict
Pass Pass Pass Pass Pass Pass Pass Pass Pass

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 12 of 45

Report No.: HTT202504144F01

6.3. 20dB Emission Bandwidth

Test Requirement:

FCC Part15 C Section 15.247 (a)(2)

Test Method:

ANSI C63.10:2013

Limit:

N/A

Test setup:

Test Instruments: Test mode: Test results: Test environment:

Refer to section 6.0 for details

Refer to section 5.2 for details

Pass

Temp.:

25 C

Humid.:

52%

Press.:

1012mbar

Measurement Data

Mode

TX Type

GFSK

SISO

Pi/4DQPSK

SISO

8DPSK

SISO

Frequency (MHz) 2402 2441 2480 2402 2441 2480 2402 2441 2480

Packet Type DH5 DH5 DH5 2DH5 2DH5 2DH5 3DH5 3DH5 3DH5

ANT
1 1 1 1 1 1 1 1 1

20dB Bandwidth (MHz)

Result

Limit

0.948

/

0.958

/

0.949

/

1.271

/

1.273

/

1.273

/

1.290

/

1.289

/

1.289

/

Verdict
Pass Pass Pass Pass Pass Pass Pass Pass Pass

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 13 of 45

Test plot as follows: Test mode:

GFSK mode

Report No.: HTT202504144F01

Lowest channel

Middle channel

Highest channel

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 14 of 45

Test mode:

Report No.: HTT202504144F01 /4-DQPSK mode

Lowest channel

Middle channel

Highest channel

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 15 of 45

Test mode:

8-DPSK mode

Report No.: HTT202504144F01

Lowest channel

Middle channel

Highest channel

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 16 of 45

Report No.: HTT202504144F01

6.4. Frequencies Separation

Test Requirement: Test Method: Receiver setup: Limit:
Test setup:

FCC Part15 C Section 15.247 (a)(1)
ANSI C63.10:2013 RBW=100KHz, VBW=300KHz, detector=Peak
GFSK: 20dB bandwidth /4-DQPSK : 0.025MHz or 2/3 of the 20dB bandwidth (whichever is greater)

Test Instruments: Test mode: Test results: Test environment:

Refer to section 6.0 for details
Refer to section 5.2 for details Pass

Temp.:

25 C

Humid.:

52%

Press.:

1012mbar

Measurement Data

Mode
GFSK Pi/4DQPSK
8DPSK

TX Type SISO SISO SISO

Frequency (MHz) HOPP HOPP HOPP

Packet Type DH5 2DH5 3DH5

Ant1 Channel Separation
(MHz) 1.000 0.984 1.001

20dB Bandwidth (MHz) 0.958 1.273 1.290

Limit (MHz) >=0.958 >=0.849 >=0.86

Verdict
Pass Pass Pass

Remark: We have tested all mode at high, middle and low channel, and recorded worst case at middle

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 17 of 45

Test plot as follows: Modulation mode:

GFSK

Report No.: HTT202504144F01

Test mode:

/4-DQPSK

Modulation mode:

8-DPSK

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 18 of 45

Report No.: HTT202504144F01

6.5. Hopping Channel Number

Test Requirement:

FCC Part15 C Section 15.247 (a)(1)(iii)

Test Method: Receiver setup:
Limit:

ANSI C63.10:2013
RBW=100kHz, VBW=300kHz, Frequency range=2400MHz-2483.5MHz, Detector=Peak 15 channels

Test setup:

Test Instruments: Test mode: Test results: Test environment:
Measurement Data: Mode GFSK
/4-DQPSK 8-DPSK

Refer to section 6.0 for details

Refer to section 5.2 for details Pass

Temp.:

25 C

Humid.:

52%

Press.:

1012mbar

Hopping channel numbers 79 79 79

Limit 15

Result Pass Pass Pass

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 19 of 45

Test plot as follows: Test mode:

GFSK

Report No.: HTT202504144F01

Test mode:

/4-DQPSK

Test mode:

8-DPSK

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 20 of 45

6.6. Dwell Time
Test Requirement: Test Method: Receiver setup: Limit: Test setup:

Report No.: HTT202504144F01
FCC Part15 C Section 15.247 (a)(1)(iii) ANSI C63.10:2013 RBW=1MHz, VBW=1MHz, Span=0Hz, Detector=Peak 0.4 Second

Test Instruments: Test mode: Test results: Test environment:

Refer to section 6.0 for details

Refer to section 5.2 for details Pass

Temp.:

25 C

Humid.:

52%

Press.:

1012mbar

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

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Page 21 of 45

Measurement Data

Report No.: HTT202504144F01

Modulation GFSK
/4DQPSK 8DPSK

Packet
DH1 DH3 DH5 2-DH1 2-DH3 2-DH5 3-DH1 3-DH3 3-DH5

Burst time (ms) 0.412 1.668 2.918 0.424 1.672 2.924 0.422 1.676 2.926

Dwell time (ms)
131.84 266.88 311.25 135.68 267.52 311.89 135.04 268.16 312.11

Limit (ms) 400 400 400

Result Pass Pass Pass

Note:We have tested all mode at high,middle and low channel,and recoreded worst case at middle channel. Dwell time=Pulse time (ms) × (1600 ÷2 ÷79) ×31.6 Second for DH1, 2-DH1, 3-DH1 Dwell time=Pulse time (ms) × (1600 ÷4 ÷79) ×31.6 Second for DH3, 2-DH3, 3-DH3 Dwell time=Pulse time (ms) × (1600 ÷6 ÷79) ×31.6 Second for DH5, 2-DH5, 3-DH5

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Shenzhen, Guangdong, China

Page 22 of 45

Test plot as follows: GFSK mode

Report No.: HTT202504144F01

DH1

DH3

DH5

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Page 23 of 45

/4-DQPSK mode

Report No.: HTT202504144F01

2DH1

2DH3

2DH5

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Page 24 of 45

8-DPSK mode

Report No.: HTT202504144F01

3DH1

3DH3

3DH5

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Page 25 of 45

Report No.: HTT202504144F01

6.7. Band Edge

6.7.1.

Conducted Emission Method

Test Requirement:

FCC Part15 C Section 15.247 (d)

Test Method:

ANSI C63.10:2013

Receiver setup:

RBW=100kHz, VBW=300kHz, Detector=Peak

Limit:

In any 100 kHz bandwidth outside the frequency band in which the spread spectrum 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.

Test setup:

Test Instruments: Test mode: Test results: Test environment:

Refer to section 6.0 for details

Refer to section 5.2 for details Pass

Temp.:

25 C

Humid.:

52%

Press.:

1012mbar

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Page 26 of 45

Test plot as follows: GFSK Mode:
Test channel

Report No.: HTT202504144F01 Lowest channel

No-hopping mode Test channel:

Hopping mode Highest channel

No-hopping mode

Hopping mode

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Page 27 of 45

/4-DQPSK Mode: Test channel

Report No.: HTT202504144F01 Lowest channel

No-hopping mode Test channel:

Hopping mode Highest channel

No-hopping mode

Hopping mode

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Page 28 of 45

8-DPSK Mode: Test channel:

Report No.: HTT202504144F01 Lowest channel

No-hopping mode Test channel:

Hopping mode Highest channel

No-hopping mode

Hopping mode

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Page 29 of 45

Report No.: HTT202504144F01

6.7.2.

Radiated Emission Method

Test Requirement: Test Method: Test Frequency Range:
Test site: Receiver setup:
Limit:

FCC Part15 C Section 15.209 and 15.205

ANSI C63.10:2013

All of the restrict bands were tested, only the worst band's (2310MHz to 2500MHz) data was showed.

Measurement Distance: 3m

Frequency

Detector

RBW

VBW

Remark

Above 1GHz

Peak Peak

1MHz 1MHz

3MHz 10Hz

Peak Value Average Value

Frequency

Limit (dBuV/m @3m)

Remark

Above 1GHz

54.00 74.00

Average Value Peak Value

Test setup:

Test Procedure:
Test Instruments: Test mode: Test results: Test environment:

1. The EUT was placed on the top of a rotating table 1.5 meters above the ground at a 3 meter camber. The table was rotated 360 degrees to determine the position of the highest radiation.

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

3. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement.

4. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters and the rota table was turned from 0 degrees to 360 degrees to find the maximum reading.

5. The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum Hold Mode.

6. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method as specified and then reported in a data sheet.

Refer to section 6.0 for details

Refer to section 5.2 for details

Pass

Temp.:

25 C

Humid.: 52%

Press.:

1012mbar

Shenzhen HTT Technology Co.,Ltd.

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Shenzhen, Guangdong, China

Page 30 of 45

Report No.: HTT202504144F01

Measurement Data
Remark: GFSK, Pi/4 DQPSK,8-DPSK all have been tested, only worse case GFSK is reported.
Operation Mode: GFSK

Frequency(MHz):

Frequency (MHz)
2390.00

Emission Level
(dBuV/m) 59.90 PK

2390.00

46.20 AV

Frequency(MHz):

Frequency (MHz)
2390.00 2390.00

Emission Level
(dBuV/m) 58.35 PK 46.48 AV

Frequency(MHz):

Frequency (MHz)
2483.50 2483.50

Emission Level
(dBuV/m) 56.54 PK 46.06 AV

Frequency(MHz):

Frequency (MHz)
2483.50 2483.50

Emission Level
(dBuV/m) 54.27 PK 43.41 AV

2402

Limit (dBuV/m)

Margin (dB)

74

14.10

54

7.80

2402

Limit (dBuV/m)

Margin (dB)

74

15.65

54

7.52

2480

Limit (dBuV/m)

Margin (dB)

74

17.46

54

7.94

2480

Limit (dBuV/m)

Margin (dB)

74

19.73

54

10.59

Polarity:

Raw Value (dBuV) 61.29

Antenna Factor (dB/m) 27.2

47.59

27.2

Polarity:

Raw Value (dBuV) 59.74 47.87

Antenna Factor (dB/m) 27.2 27.2

P olarity:

Raw Value (dBuV) 57.47 46.99

Antenna Factor (dB/m) 27.4 27.4

Polarity:

Raw Value (dBuV) 55.20

Antenna Factor (dB/m) 27.4

44.34

27.4

HORIZONTAL

Cable

Pre- Correction

Factor amplifier Factor

(dB)

(dB)

(dB/m)

4.31

32.9

-1.39

4.31

(d3B2.)9e-

-1.39

Cable

VaEmRpTlIiCfieArL FParceto- r Correction

Factor amplifier Factor

(dB)

(dB)

(dB/m)

4.31

32.9

-1.39

4.31

(d3B2.)9e-

-1.39

HOaRmIZpOlifNieTr AL

Cable

FParceto- r Correction

Factor amplifier Factor

(dB)

(dB)

(dB/m)

4.47

32.8

-0.93

4.47

(d3B2.)8e-

-0.93

VaEmRpTlIiCfieArL

Cable

FParceto- r Correction

Factor amplifier Factor

(dB)

(dB)

(dB/m)

4.47

32.8

-0.93

4.47

(d3B2.)8e-

-0.93

amplifier

Factor

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Page 31 of 45

Report No.: HTT202504144F01

6.8. Spurious Emission

6.8.1.

Conducted Emission Method

Test Requirement:

FCC Part15 C Section 15.247 (d)

Test Method:

ANSI C63.10:2013

Limit:

In any 100 kHz bandwidth outside the frequency band in which the spread spectrum 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.

Test setup:

Test Instruments: Test mode: Test results: Test environment:

Refer to section 6.0 for details

Refer to section 5.2 for details Pass

Temp.:

25 C

Humid.:

52%

Press.:

1012mbar

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

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Shenzhen, Guangdong, China

Page 32 of 45

Reference

Report No.: HTT202504144F01

GFSK

/4DQPSK

8-DPSK

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Shenzhen, Guangdong, China

Page 33 of 45

GFSK

Report No.: HTT202504144F01

CH00

CH39

CH78

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Page 34 of 45

/4DQPSK

Report No.: HTT202504144F01

CH00

CH39

CH78

Shenzhen HTT Technology Co.,Ltd.

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Shenzhen, Guangdong, China

Page 35 of 45

8-DPSK

Report No.: HTT202504144F01

CH00

CH39

CH78

Shenzhen HTT Technology Co.,Ltd.

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Shenzhen, Guangdong, China

Page 36 of 45

Report No.: HTT202504144F01

6.8.2.

Radiated Emission Method

Test Requirement:

FCC Part15 C Section 15.209

Test Method:

ANSI C63.10:2013

Test Frequency Range:

9kHz to 25GHz

Test site:

Measurement Distance: 3m

Receiver setup:

Frequency

Detector

RBW

VBW

Value

9KHz-150KHz Quasi-peak 200Hz 600Hz Quasi-peak

150KHz-30MHz Quasi-peak 9KHz 30KHz Quasi-peak

30MHz-1GHz Quasi-peak 120KHz 300KHz Quasi-peak

Above 1GHz

Peak Peak

1MHz 1MHz

3MHz 10Hz

Peak Average

Limit:

Frequency

Limit (uV/m)

Value

Measurement Distance

0.009MHz-0.490MHz 2400/F(KHz)

QP

300m

0.490MHz-1.705MHz 24000/F(KHz)

QP

30m

1.705MHz-30MHz

30

QP

30m

30MHz-88MHz

100

QP

88MHz-216MHz

150

QP

216MHz-960MHz

200

QP

3m

960MHz-1GHz

500

QP

Above 1GHz

500 5000

Average Peak

Test setup:

For radiated emissions from 9kHz to 30MHz

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Page 37 of 45

Report No.: HTT202504144F01
For radiated emissions from 30MHz to1GHz
For radiated emissions above 1GHz

Test Procedure:

1. The EUT was placed on the top of a rotating table (0.8m for below 1G and 1.5m for above 1G) above the ground at a 3 meter camber. The table was rotated 360 degrees to determine the position of the highest radiation.
2. The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on the top of a variable-height antenna tower.
3. The antenna height is varied from one meter to four meters above the ground to determine the maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set to make the measurement.
4. For each suspected emission, the EUT was arranged to its worst case and then the antenna was tuned to heights from 1 meter to 4 meters and the rota table was turned from 0 degrees to 360 degrees to find the maximum reading.

Shenzhen HTT Technology Co.,Ltd.

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Page 38 of 45

Test Instruments: Test mode: Test environment: Test voltage: Test results:

Report No.: HTT202504144F01

5. The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum Hold Mode.
6. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method as specified and then reported in a data sheet.

Refer to section 6.0 for details

Refer to section 5.2 for details

Temp.:

25 C

Humid.: 52%

Press.:

1012mbar

AC 120V, 60Hz

Pass

Measurement data:
Remarks: 1. During the test, pre-scan the GFSK, /4-DQPSK, 8-DPSK modulation, and found the GFSK modulation
which it is worse case. 2. Pre-scan all kind of the place mode (X-axis, Y-axis, Z-axis), and found the Y-axis which it is worse case. 3. Radiated emission test from 9 KHz to 10th harmonic of fundamental was verified, and no emission found
except system noise floor in 9 KHz to 30MHz and not recorded in this report. 4. Tested all modes and saved the worst data in DH5 2402MHz as below:

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Page 39 of 45

For 30MHz-1GHz

Horizontal

Report No.: HTT202504144F01

Final Level =Receiver Read level + Correct Factor

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Page 40 of 45

Vertical

Report No.: HTT202504144F01

Final Level =Receiver Read level + Correct Factor

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Page 41 of 45

Report No.: HTT202504144F01
For 1GHz to 25GHz Remark: For test above 1GHz GFSK,Pi/4 DQPSK and 8-DPSK were test at Low, Middle, and High channel; only the worst result of GFSK was reported as below:

Frequency(MHz):

Frequency (MHz)

Emission Level
(dBuV/m)

4804.00

60.01 PK

4804.00 7206.00 7206.00

43.18 AV 53.01 PK 44.49 AV

2402

Limit (dBuV/m)

Margin (dB)

74

13.99

54

10.82

74

20.99

54

9.51

Polarity:

Raw Value (dBuV)

Antenna Factor (dB/m)

54.31

31

37.48

31

40.36

36

31.84

36

HORIZONTAL

Cable Factor (dB)

Pre- Correction

amplifier Factor

(dB)

(dB/m)

6.5

31.8

5.7

6.5

(d3B1.)8e-

5.7

8.15 am3p1l.i5fier 12.65

8.15

F3a1c.t5or

12.65

Frequency(MHz):

Frequency (MHz)

Emission Level
(dBuV/m)

4804.00

58.50 PK

4804.00

42.66 AV

7206.00

52.73 PK

7206.00

43.89 AV

2402

Limit (dBuV/m)

Margin (dB)

74

15.50

54

11.34

74

21.27

54

10.11

Polarity:

Raw Value

Antenna Factor

(dBuV) (dB/m)

52.80

31

36.96

31

40.08

36

31.24

36

VERTICAL

Cable

Pre- Correction

Factor amplifier Factor

(dB)

(dB)

(dB/m)

6.5

31.8

5.7

6.5

(d3B1.)8e-

5.7

8.15 am3p1l.i5fier 12.65

8.15

F3a1c.t5or

12.65

Frequency(MHz):

Frequency (MHz)
4882.00

Emission Level
(dBuV/m) 59.94 PK

4882.00 7323.00 7323.00

44.55 AV 53.47 PK 43.12 AV

2441

Limit (dBuV/m)

Margin (dB)

74

14.06

54

9.45

74

20.53

54

10.88

Polarity:

Raw Value (dBuV)

Antenna Factor (dB/m)

53.78

31.2

38.39

31.2

40.52

36.2

30.17

36.2

HORIZONTAL

Cable Factor (dB)

Pre- Correction

amplifier Factor

(dB)

(dB/m)

6.61

31.65

6.16

6.61

(3d1B.6)e5-

6.16

8.23 am31p.l4if8ier 12.95

8.23

F3a1c.4to8r 12.95

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Page 42 of 45

Report No.: HTT202504144F01

Frequency(MHz):

Frequency (MHz)
4882.00

Emission Level
(dBuV/m) 61.65 PK

4882.00 7323.00

43.73 AV 53.28 PK

7323.00

44.25 AV

2441

Limit (dBuV/m)

Margin (dB)

74

12.35

54

10.27

74

20.72

54

9.75

Polarity:

Raw Value (dBuV)

Antenna Factor (dB/m)

55.49

31.2

37.57

31.2

40.33

36.2

31.30

36.2

VERTICAL

Cable

Pre- Correction

Factor amplifier Factor

(dB)

(dB)

(dB/m)

6.61

31.65

6.16

6.61

(3d1B.6)e5-

6.16

8.23

am31p.l4if8ier 12.95

Factor

8.23

31.48

12.95

Frequency(MHz):

Frequency (MHz)

Emission Level
(dBuV/m)

4960.00 4960.00

62.62 PK 42.67 AV

7440.00 7440.00

53.21 PK 45.73 AV

2480

Limit (dBuV/m)

Margin (dB)

74

11.38

54

11.33

74

20.79

54

8.27

Polarity:

Raw Antenna

Value (dBuV)

Factor (dB/m)

55.96

31.4

36.01

31.4

39.91

36.4

32.43

36.4

HORIZONTAL

Cable Factor (dB)

Pre- Correction

amplifier Factor

(dB)

(dB/m)

6.76

31.5

6.66

6.76

(d3B1.)5e-

6.66

8.35 am31p.l4if5ier 13.3

8.35

F3a1c.4to5r

13.3

Frequency(MHz):

Frequency (MHz)

Emission Level
(dBuV/m)

4960.00

63.40 PK

4960.00

42.75 AV

7440.00

55.23 PK

7440.00

45.70 AV

2480

Limit (dBuV/m)

Margin (dB)

74

10.60

54

11.25

74

18.77

54

8.30

Polarity:

Raw Antenna

Value Factor

(dBuV) (dB/m)

56.74

31.4

36.09

31.4

41.93

36.4

32.40

36.4

VERTICAL

Cable

Pre- Correction

Factor amplifier Factor

(dB)

(dB)

(dB/m)

6.76

31.5

6.66

6.76

(d3B1.)5e-

6.66

8.35 am31p.l4if5ier 13.3

8.35

F3a1c.4to5r

13.3

Remark (1) Data of measurement within this frequency range shown "--- " 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. (2) When the test results of Peak Detected below the limits of Average Detected, the Average Detected is not need completed.

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Page 43 of 45

6.9. Antenna Requirement

Report No.: HTT202504144F01

Standard Applicable

For intentional device, according to FCC 47 CFR Section 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. 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
FCC CFR Title 47 Part 15 Subpart C Section 15.247(c) (1) (I):
(i) 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.
Antenna Connected Construction

The maximum gain of antenna was 2.70 dBi.
Remark:The antenna gain is provided by the customer , if the data provided by the customer is not accurate, Shenzhen HTT Technology Co.,Ltd. does not assume any responsibility.

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

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Shenzhen, Guangdong, China

Page 44 of 45

7. Test Setup Photo
Reference to the appendix I for details.
8. EUT Constructional Details
Reference to the appendix II for details.
------End------

Report No.: HTT202504144F01

Shenzhen HTT Technology Co.,Ltd.

Tel: 0755-23595200 Fax: 0755-23595201

1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District,

Shenzhen, Guangdong, China

Page 45 of 45



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