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Ugreen Group Limited BT503 Bluetooth Audio Adapter 2AQI5-BT503 2AQI5BT503 bt503

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Report No.: BL-SZ2491211-601

TEST REPORT

Applicant: Address: Equipment Type: Model Name: Brand Name: FCC ID: Test Standard: Sample Arrival Date: Test Date: Date of Issue:

Ugreen Group Limited URGEEN Building, Longcheng Industrial Park, Longguanxi Road, Longhua, ShenZhen, China Bluetooth Audio Adapter BT503
2AQI5-BT503 47 CFR Part 15, Subpart C (refer to section 3.1) Sep. 29, 2024 Oct. 08, 2024 - Oct. 24, 2024 Nov. 12, 2024

ISSUED BY: Shenzhen BALUN Technology Co., Ltd.

Tested by: Julie Zhu

Checked by: Ye Hongji

Approved by: Sunny Zou (Technical Director)

_______________

_______________

_______________

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601

Version Rev. 01

Revision History

Issue Date Nov. 12, 2024

Revisions Initial Issue

TABLE OF CONTENTS

1 GENERAL INFORMATION........................................................................................................ 4

1.1

Test Laboratory ............................................................................................................ 4

1.2

Test Location ................................................................................................................ 4

2 PRODUCT INFORMATION ....................................................................................................... 5

2.1

Applicant Information .................................................................................................... 5

2.2

Manufacturer Information.............................................................................................. 5

2.3

Factory Information....................................................................................................... 5

2.4

General Description for Equipment under Test (EUT) ................................................... 5

2.5

Technical Information ................................................................................................... 6

3 SUMMARY OF TEST RESULTS ............................................................................................... 8

3.1

Test Standards ............................................................................................................. 8

3.2

Test Verdict .................................................................................................................. 8

4 GENERAL TEST CONFIGURATIONS ...................................................................................... 9

4.1

Test Environments........................................................................................................ 9

4.2

Test Equipment List ...................................................................................................... 9

4.3

Test Software List ......................................................................................................... 9

4.4

Measurement Uncertainty........................................................................................... 10

4.5

Description of Test Setup ........................................................................................... 10

4.6

Measurement Results Explanation Example............................................................... 13

5 TEST ITEMS ........................................................................................................................... 14

5.1

Antenna Requirements ............................................................................................... 14

5.2

Frequency Hopping Systems...................................................................................... 15

5.3

Number of Hopping Frequencies ................................................................................ 17

5.4

Peak Output Power .................................................................................................... 19

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Report No.: BL-SZ2491211-601

5.5

Occupied Bandwidth................................................................................................... 22

5.6

Carrier Frequency Separation..................................................................................... 27

5.7

Time of Occupancy (Dwell time) ................................................................................. 29

5.8

Conducted Spurious Emission & Authorized-band band-edge.................................... 33

5.9

Conducted Emission................................................................................................... 41

5.10

Radiated Spurious Emission ....................................................................................... 44

5.11

Band Edge (Restricted-band band-edge).................................................................... 60

ANNEX A TEST SETUP PHOTOS ............................................................................................. 65

1

Radiated Test Photo ................................................................................................... 65

2

Conducted Test Photo ................................................................................................ 67

3

Conducted Emission................................................................................................... 68

ANNEX B EUT EXTERNAL PHOTOS......................................................................................... 69

ANNEX C EUT INTERNAL PHOTOS.......................................................................................... 73

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Report No.: BL-SZ2491211-601

1 GENERAL INFORMATION

1.1 Test Laboratory

Name Address Phone Number

Shenzhen BALUN Technology Co., Ltd. Block B, 1/F, Baisha Science and Technology Park, Shahe Xi Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China +86 755 6685 0100

1.2 Test Location

Name Location Accreditation Certificate

Shenzhen BALUN Technology Co., Ltd. Block B, 1/F, Baisha Science and Technology Park, Shahe Xi
Road, Nanshan District, Shenzhen, Guangdong Province, P. R. China 1/F, Building B, Ganghongji High-tech Intelligent Industrial Park,
No. 1008, Songbai Road, Yangguang Community, Xili Sub-district, Nanshan District, Shenzhen, Guangdong Province, P. R. China The laboratory is a testing organization accredited by FCC as a accredited testing laboratory. The designation number is CN1196.

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601

2 PRODUCT INFORMATION

2.1 Applicant Information

Applicant Address

Ugreen Group Limited UGREEN Building, Longcheng Industrial Park Longguanxi Road, Longhua, ShenZhen, China

2.2 Manufacturer Information

Manufacturer Address

Ugreen Group Limited UGREEN Building, Longcheng Industrial Park Longguanxi Road, Longhua, ShenZhen, China

2.3 Factory Information

Factory Address

SKY WING COMMUNICATION ELECTRONICS CO., LTD. 2nd and 3rd floor, No. 62, 10th Road, Longyan Zone, Humen Town, Dongguan, Guangdong Province, China

2.4 General Description for Equipment under Test (EUT)

EUT Name

Bluetooth Audio Adapter

Model Name Under Test BT503

Series Model Name

N/A

Description of Model name differentiation

N/A

Hardware Version

V02

Software Version

V001

Dimensions (Approx.) N/A

Weight (Approx.)

N/A

Remark:

- Product Number (P/N) code in the below table, for marketing purpose, will be marked on the marking

plate.

45492 45492A 45492B 45492C 45492U 45492P 45492X 45492JP 45492EU 45492UK 45492US

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Report No.: BL-SZ2491211-601

2.5 Technical Information

Network and Wireless connectivity

Bluetooth (BR+EDR)

The requirement for the following technical information of the EUT was tested in this report:

Modulation Technology FHSS

Modulation Type

GFSK, /4-DQPSK, 8-DPSK

Mobile

Product Type

Portable

Fix Location

DH5: 1 Mbps

Transfer Rate

2DH5: 2 Mbps

3DH5: 3 Mbps

Frequency Range

The frequency range used is 2400 MHz to 2483.5 MHz.

Number of Channel

79 (at intervals of 1 MHz)

Tested Channel

0 (2402 MHz), 39 (2441 MHz), 78 (2480 MHz)

Antenna Type

FPC Antenna

Antenna Gain

-1.45 dBi

Antenna Impedance

50

Antenna System (MIMO Smart Antenna)

N/A

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E-mail: [email protected]

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Report No.: BL-SZ2491211-601

All channel was listed on the following table:

Channel Freq. Channel Freq.

number (MHz) number (MHz)

0

2402

21

2423

1

2403

22

2424

2

2404

23

2425

3

2405

24

2426

4

2406

25

2427

5

2407

26

2428

6

2408

27

2429

7

2409

28

2430

8

2410

29

2431

9

2411

30

2432

10

2412

31

2433

11

2413

32

2434

12

2414

33

2435

13

2415

34

2436

14

2416

35

2437

15

2417

36

2438

16

2418

37

2439

17

2419

38

2440

18

2420

39

2441

19

2421

40

2442

20

2422

41

2443

Channel number
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62

Freq. (MHz) 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464

Channel number
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 -

Freq. (MHz) 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480
-

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Report No.: BL-SZ2491211-601

3 SUMMARY OF TEST RESULTS

3.1 Test Standards

No.

Identity

Document Title

1 47 CFR Part 15, Subpart C Intentional radiators of radio frequency equipment

2

ANSI C63.10-2013

American National Standard for Testing Unlicensed Wireless Devices

3

KDB 558074 D01 15.247

Guidance for compliance measurements on digital transmission system, frequency hopping spread spectrum system, and hybrid

Meas Guidance v05r02 system devices operating under section 15.247 of the FCC rules

3.2 Test Verdict

No.

Description

FCC Part No.

Channel

Test Result

Verdict

Remark

1

Antenna Requirement

15.203

N/A

--

Pass Note 1

Number of Hopping 2
Frequencies

15.247(a)

Hopping Mode 5.3.4 Pass Note 2

3

Peak Output Power

15.247(b)

Low/Middle/High 5.4.4 Pass

--

4

Occupied Bandwidth

15.247(a)

Low/Middle/High 5.5.4 Pass

--

Carrier Frequency

5

Separation

15.247(a)

Hopping Mode 5.6.4 Pass Note 2

Time of Occupancy (Dwell

6

time)

15.247(a)

Hopping Mode 5.7.4 Pass Note 2

Conducted Spurious 7 Emission & Authorized-band
band-edge

15.247(d)

Hopping Mode; Low/Middle/High

5.8.4

Pass

Note 2

8

Conducted Emission

15.207

Low/Middle/High 5.9.4 Pass Note 2

9 Radiated Spurious Emission

15.209 15.247(d)

Low/Middle/High 5.10.4 Pass Note 2

10 Band Edge(Restricted-band band-edge)

15.209 15.247(d)

Low/High

5.11.4 Pass Note 2

Note 1: The EUT has a permanently and irreplaceable attached antenna, which complies with the

requirement FCC 15.203.

Note 2: /4-DQPSK is the EDR 2M rate mode, 8-DPSK is the EDR 3M rate mode. The consistency of test

results in /4-DQPSK and 8-DPSK is very high. So we chose 8-DPSK as a typical representative to

appear on the report. Another we will show all the modes on the RF output power test item.

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Report No.: BL-SZ2491211-601

4 GENERAL TEST CONFIGURATIONS

4.1 Test Environments

During the measurement, the normal environmental conditions were within the listed ranges:

Relative Humidity Atmospheric Pressure Temperature Working Voltage of the EUT

45% to 61% 100 kPa to 102 kPa NT (Normal Temperature) NV (Normal Voltage)

+23.8 to +24.7 5 V

4.2 Test Equipment List

Description Spectrum Analyzer Spectrum Analyzer Test Antenna-Horn Test Antenna-Horn Anechoic Chamber
Amplifier
Amplifier
EMI Receiver Test Antenna-Bi-Log Test Antenna-Loop
Amplifier
Anechoic Chamber
EMI Receiver LISN
Shielded Enclosure

Manufacturer KEYSIGHT KEYSIGHT SCHWARZBECK
A-INFO RAINFORD
COM-MV
COM-MV
ROHDE&SCHWARZ SCHWARZBECK SCHWARZBECK COM-MV
EMC Electronic Co., Ltd
KEYSIGHT SCHWARZBECK YiHeng Electronic
Co., Ltd

Model N9020A N9020A BBHA 9120D LB-180400KF 9m*6m*6m LSCX_LNA112G-01 XKu_LNA718G-01 ESRP VULB 9168 FMZB 1519 ZT30-1000M 20.10*11.60*7
.35m N9010B NSLK 8127 3.5m*3.1m*2.
8m

Serial No. MY46471071 MY50531259
02460 J211060273
140
7210214
7210209
101036 9168-01162
1519-037 B2018054558
130
MY57110309 8127-687
112

Cal. Date 2024.07.04 2024.08.01 2024.05.16 2024.06.15 2024.07.28
2024.08.01
2024.08.01
2024.08.01 2023.08.04 2024.01.23 2023.12.05
2024.07.13
2024.08.01 2024.05.09
2022.02.19

Cal. Due 2025.07.03 2025.07.31 2027.05.15 2027.06.14 2027.07.27
2025.07.31
2025.07.31
2025.07.31 2026.08.03 2025.01.22 2024.12.04
2027.07.12
2025.07.31 2025.05.08
2025.02.18

4.3 Test Software List

Description BL410R BL410E

Manufacturer BALUN BALUN

Software Version V2.1.1.488 V22.930

Serial No. N/A N/A

Applicable test Setup The section 4.5.1
The section 4.5.2&4.5.3&4.5.4&4.5.5

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Report No.: BL-SZ2491211-601

4.4 Measurement Uncertainty

The following measurement uncertainty levels have been estimated for tests performed on the EUT as specified in CISPR 16-4-2.

This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence

level using a coverage factor of k=2.

Parameters

Uncertainty

Occupied Channel Bandwidth

2.8%

RF output power, conducted

1.28 dB

Power Spectral Density, conducted

1.30 dB

Unwanted Emissions, conducted

1.84 dB

All emissions, radiated

5.36 dB

Temperature

0.8°C

Humidity

4%

4.5 Description of Test Setup
4.5.1 For Antenna Port Test
Conducted value (dBm) = Measurement value (dBm) + cable loss (dB)
For example: the measurement value is 10 dBm and the cable 0.5dBm used, then the final result of EUT: Conducted value (dBm) = 10 dBm + 0.5 dB = 10.5 dBm

(Diagram 1)

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Report No.: BL-SZ2491211-601
4.5.2 For AC Power Supply Port Test
(Diagram 2)
4.5.3 For Radiated Test (Below 30 MHz)

(Diagram 3)

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Report No.: BL-SZ2491211-601
4.5.4For Radiated Test (30 MHz-1 GHz)
(Diagram 4)
4.5.5 For Radiated Test (Above 1 GHz)

(Diagram 5)

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Report No.: BL-SZ2491211-601
4.6 Measurement Results Explanation Example
4.6.1 For conducted test items:
The offset level is set in the spectrum analyzer to compensate the RF cable loss and attenuator between EUT conducted output port and spectrum analyzer. With the offset compensation, the spectrum analyzer reading level is exactly the EUT RF output level. The spectrum analyzer offset is derived from RF cable loss and attenuator factor. Offset = RF cable loss + attenuator factor.

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Report No.: BL-SZ2491211-601

5 TEST ITEMS
5.1 Antenna Requirements
5.1.1 Relevant Standards
FCC §15.203 & 15.247(b) 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 shall be considered sufficient to comply with the provisions of this section. 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. This requirement does not apply to carrier current devices or to devices operated under the provisions of § 15.211, § 15.213, § 15.217, § 15.219, or § 15.221. Further, this requirement does not apply to intentional radiators that must be professionally installed, such as perimeter protection systems and some field disturbance sensors, or to other intentional radiators which, in accordance with § 15.31(d), must be measured at the installation site. However, the installer shall be responsible for ensuring that the proper antenna is employed so that the limits in this part are not exceeded.

If directional gain of transmitting antennas is greater than 6 dBi, the power shall be reduced by the same level in dB comparing to gain minus 6 dBi. For the fixed point-to-point operation, the power shall be reduced by one dB for every 3 dB that the directional gain of the antenna exceeds 6 dBi. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the FCC rule.

5.1.2 Antenna Anti-Replacement Construction

The Antenna Anti-Replacement as following method:

Protected Method

Description

The antenna is embedded in the An embedded-in antenna design is used.

product.

Reference Documents Photo

Item Please refer to the EUT Photo documents.

5.1.3 Antenna Gain

The antenna peak gain of EUT is less than 6 dBi. Therefore, it is not necessary to reduce maximum peak output power limit.

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Report No.: BL-SZ2491211-601
5.2 Frequency Hopping Systems
5.2.1 Relevant Standards
FCC §15.247(a) (1) (i) (ii) (iii) (iv); FCC §15.247(g); FCC §15.247(h) Describe how the hopping sequence is generated. Provide an example of the hopping sequence channels, to demonstrate that the sequence meets the requirement specified in the definition of an FHSS system. Per the definition in Section 2.1(c), the hop set shall appear as random in the near term, shall appear as evenly distributed in the long term, and sequential hops shall be randomly distributed in both direction and magnitude of change. Describe how each individual EUT meets the requirement that each of its hopping channels is used equally on average (e.g., that each new transmission event begins on the next channel in the hopping sequence after the final channel used in the previous transmission event). Describe how the associated receiver(s) complies with the requirement that the input bandwidth (either RF or IF) matches the bandwidth of the transmitted signal. Describe how the associated receiver(s) has the ability to shift frequencies in synchronization with the transmitted signals. For short burst systems, describe how the EUT complies with the requirement that it be designed to be capable of operating as a true frequency hopping system. Specifically, the device shall comply with the equal frequency use and pseudorandom hopping sequence requirement when transmitting in short bursts, and shall be designed to comply when presented with continuous data (or information) stream. Describe how the EUT complies with the requirement that it not have the ability to be coordinated with other FHSS systems in an effort to avoid the simultaneous occupancy of individual hopping frequencies by multiple transmitters.

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Report No.: BL-SZ2491211-601
5.2.2 Description of the systems
1. According to the preset procedure of the whole network, all the stations in the automatic control network synchronously change the frequency multiple times within one second, and temporarily stay on each frequency hopping channel. Periodic synchronization signaling is sent from the primary station, instructing all slaves to simultaneously change the operating frequency, then the hopping sequence is generated.
2. The hop set shall appear as random in the near term, shall appear as evenly distributed in the long term, and sequential hops shall be randomly distributed in both direction and magnitude of change.
Reference Documents
3. Channels are classified into two categories, used and unused, where used channels are part of the hopping sequence and unused channels are replaced in the hopping sequence by used channels in a pseudo-random way. Make each individual EUT meets the requirement that each of its hopping channels is used equally on average.
4. The input bandwith and transmitted bandwith are both 1MHz, the associated receiver(s) complies with the requirement that the input bandwidth matches the bandwidth of the transmitted signal.
5. Connected devices communicate on the same physical channel by synchronizing with a common clock and hopping sequence.
6. EUT isn't short burst systems. 7. EUT can't have the ability to be coordinated with other FHSS systems in an effort.

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Report No.: BL-SZ2491211-601
5.3 Number of Hopping Frequencies
5.3.1 Limit
FCC §15.247(a) (1) (iii)
Frequency hopping systems operating in the 2400 MHz to 2483.5 MHz bands shall use at least 15 hopping frequencies.
5.3.2 Test Setup
See section 4.5.1 for test setup description for the antenna port. The photo of test setup please refer to ANNEX A.
5.3.3 Test Procedure
The EUT must have its hopping function enabled. Use the following spectrum analyzer settings:
Span = The frequency band of operation RBW = To identify clearly the individual channels, set the RBW to less than 30% of the channel spacing or the 20 dB bandwidth, whichever is smaller. VBW  RBW Sweep = auto Detector function = peak Trace = max hold Allow the trace to stabilize

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Report No.: BL-SZ2491211-601

5.3.4 Test Result
Test Data Test Mode GFSK 8-DPSK

Frequency Block (MHz)
2400 - 2483.5 2400 - 2483.5

Measured Channel Numbers 79 79

Min. Limit
15 15

Test Plots GFSK 2.4 GHz ~ 2.4415 GHz

GFSK 2.4415 GHz ~ 2.4835 GHz

Verdict
Pass Pass

8-DPSK 2.4 GHz ~ 2.4415 GHz

8-DPSK 2.4415 GHz ~ 2.4835 GHz

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Report No.: BL-SZ2491211-601

5.4 Peak Output Power

5.4.1 Test Limit

FCC § 15.247(b)

For frequency hopping systems operating in the 2400-2483.5 MHz band employing at least 75 nonoverlapping hopping channels band: 1 watt. For all other frequency hopping systems in the 2400-2483.5 MHz band: 0.125 watts.

5.4.2 Test Setup

See section 4.5.1 for test setup description for the antenna port. The photo of test setup please refer to ANNEX A.

5.4.3 Test Procedure

The Module operates at hopping-off test mode. The lowest, middle and highest channels are selected to perform testing to verify the conducted RF output peak power of the Module.

Use the following spectrum analyzer settings:

Span = approximately 5 times the 20 dB bandwidth, centered on a hopping channel

RBW > the 20 dB bandwidth of the emission being measured

VBW  RBW

Sweep = auto

Detector function = peak

Trace = max hold

Allow the trace to stabilize.

5.4.4 Test Result

Peak Power Test Data

Measured Output Peak Power

Channel

GFSK

/4-DQPSK

8-DPSK

dBm

mW

dBm

mW

dBm

mW

Low

2.90

1.95

1.58

1.44

2.27

1.68

Middle 3.11

2.05

1.78

1.51

2.45

1.76

High

3.15

2.07

1.83

1.52

2.49

1.77

Limit

dBm

mW

21

125

Verdict
Pass Pass Pass

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Report No.: BL-SZ2491211-601
Test Plots GFSK LOW CHANNEL

GFSK MIDDLE CHANNEL

GFSK HIGH CHANNEL

/4-DQPSK LOW CHANNEL

/4-DQPSK MIDDLE CHANNEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601 /4-DQPSK HIGH CHANNEL

8-DPSK LOW CHANNEL

8-DPSK MIDDLE CHANNEL

8-DPSK HIGH CHANNEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601

5.5 Occupied Bandwidth

5.5.1 Limit

FCC §15.247(a)

Measurement of the 20dB bandwidth of the modulated signal.

5.5.2 Test Setup

See section 4.5.1 for test setup description for the antenna port. The photo of test setup please refer to ANNEX A.

5.5.3 Test Procedure

Use the following spectrum analyzer settings:

Span = approximately 2 to 5 times the 20 dB bandwidth, centered on a hopping channel

RBW = in the range of 1% to 5% of the OBW

VBW  RBW

Sweep = auto

Detector function = peak

Trace = max hold

The EUT should be transmitting at its maximum data rate, Allow the trace to stabilize.

5.5.4 Test Result

Test Data
Channel Low
Middle High
Channel Low
Middle High
Channel Low
Middle High

GFSK 20 dB Bandwidth (MHz)
0.967500 0.967500 0.967500 /4-DQPSK 20 dB Bandwidth (MHz) 1.342500 1.342500 1.342500 8-DPSK 20 dB Bandwidth (MHz) 1.312500 1.312500 1.312500

99% Bandwidth (MHz) 0.878020 0.879850 0.876590
99% Bandwidth (MHz) 1.186200 1.186800 1.186900
99% Bandwidth (MHz) 1.183600 1.183400 1.183000

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
Test Plots 20 dB Bandwidth
GFSK LOW CHANNEL

GFSK MIDDLE CHANNEL

GFSK HIGH CHANNEL

/4-DQPSK LOW CHANNEL

/4-DQPSK MIDDLE CHANNEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601 /4-DQPSK HIGH CHANNEL

8-DPSK LOW CHANNEL

8-DPSK MIDDLE CHANNEL

8-DPSK HIGH CHANNEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
99% Bandwidth GFSK LOW CHANNEL

GFSK MIDDLE CHANNEL

GFSK HIGH CHANNEL

/4-DQPSK LOW CHANNEL

/4-DQPSK MIDDLE CHANNEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601 /4-DQPSK HIGH CHANNEL

8-DPSK LOW CHANNEL

8-DPSK MIDDLE CHANNEL

8-DPSK HIGH CHANNEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
5.6 Carrier Frequency Separation
5.6.1 Limit
FCC §15.247(a) Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 2/3 of the 20 dB bandwidth of the hopping channel, whichever is greater.
5.6.2 Test Setup
See section 4.5.1 for test setup description for the antenna port. The photo of test setup please refer to ANNEX A.
5.6.3 Test Procedure
The EUT must have its hopping function enabled. Use the following spectrum analyzer settings: Span = wide enough to capture the peaks of two adjacent channels Resolution (or IF) Bandwidth (RBW)  1% of the span Video (or Average) Bandwidth (VBW)  RBW Sweep = auto Detector function = peak Trace = max hold Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels.

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601

5.6.4 Test Result
Test Data Mode GFSK
8-DPSK

Frequency separation (MHz) 1.000 1.000

2/3 of the 20 dB Bandwidth (MHz)
0.645 0.875

Test Plots GFSK

8-DPSK

Verdict
Pass Pass

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
5.7 Time of Occupancy (Dwell time)
5.7.1 Limit
FCC §15.247(a)
Frequency hopping systems in the 2400 MHz - 2483.5 MHz band shall use at least 15 non-overlapping channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used.
5.7.2 Test Setup
See section 4.5.1 for test setup description for the antenna port. The photo of test setup please refer to ANNEX A.
5.7.3 Test Procedure
The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: Span: Zero span, centered on a hopping channel RBW shall be  channel spacing and where possible RBW should be set >> 1 / T, where T is the expected dwell time per channel Sweep: As necessary to capture the entire dwell time per hopping channel; where possible use a video trigger and trigger delay so that the transmitted signal starts a little to the right of the start of the plot. The trigger level might need slight adjustment to prevent triggering when the system hops on an adjacent channel; a second plot might be needed with a longer sweep time to show two successive hops on a channel Detector function: Peak Trace: Max hold
Use the marker-delta function to determine the transmit time per hop. If this value varies with different modes of operation (data rate, modulation format, number of hopping channels, etc.), then repeat this test for each variation in transmit time.
The average time of occupancy on any channel within the Period can be calculated with formulas: For GFSK and 8-DPSK: For DH1 package type {Total of Dwell} = {Pulse Time} * (1600 / 2) / {Number of Hopping Frequency} * {Period} {Period} = 0.4 s * {Number of Hopping Frequency} For DH3 package type {Total of Dwell} = {Pulse Time} * (1600 / 4) / {Number of Hopping Frequency} * {Period} {Period} = 0.4 s * {Number of Hopping Frequency} For DH5 package type {Total of Dwell} = {Pulse Time} * (1600 / 6) / {Number of Hopping Frequency} * {Period} {Period} = 0.4 s * {Number of Hopping Frequency} For AFH Mode: For DH1 package type {Total of Dwell} = {Pulse Time} * (800 / 2) / {Number of Hopping Frequency} * {Period}

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601

{Period} = 0.4 s * {Number of Hopping Frequency} For DH3 package type {Total of Dwell} = {Pulse Time} * (800 / 4) / {Number of Hopping Frequency} * {Period} {Period} = 0.4 s * {Number of Hopping Frequency} For DH5 package type {Total of Dwell} = {Pulse Time} * (800 / 6) / {Number of Hopping Frequency} * {Period} {Period} = 0.4 s * {Number of Hopping Frequency}

The lowest, middle and highest channels are selected to perform testing to record the dwell time of each occupation measured in this channel, which is called Pulse Time here.

5.7.4 Test Result

Test Data
DH Packet DH 1 DH 3 DH 5
DH Packet 3DH 1 3DH 3 3DH 5
DH Packet DH 1 DH 3 DH 5

Pulse Width (ms) 0.38400 1.63800 2.89200
Pulse Width (ms) 0.38720 1.63800 2.89200
Pulse Width (ms) 0.38400 1.63800 2.89200

GFSK
Total of Dwell (ms)
122.880 262.080 308.480 8-DPSK Total of Dwell (ms) 123.904 262.080 308.480 AFH Mode Total of Dwell (ms) 61.440 131.040 154.240

Limit (sec) 0.4 0.4 0.4
Limit (sec) 0.4 0.4 0.4
Limit (sec) 0.4 0.4 0.4

Verdict Pass Pass Pass
Verdict Pass Pass Pass
Verdict Pass Pass Pass

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
Test Plots GFSK DH1

GFSK DH3

GFSK DH5

8-DPSK 3DH1

8-DPSK 3DH3

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601 8-DPSK 3DH5

AFH Mode DH1

AFH Mode DH3

AFH Mode DH5

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
5.8 Conducted Spurious Emission & Authorized-band band-edge
5.8.1 Limit
FCC §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.
5.8.2 Test Setup
See section 4.5.1 for test setup description for the antenna port. The photo of test setup please refer to ANNEX A.
5.8.3 Test Procedure
Use the following spectrum analyzer settings:
Span = wide enough to capture the peak level of the in-band emission and all spurious emissions (e.g., harmonics) from the lowest frequency generated in the EUT up through the 10th harmonic. Typically, several plots are required to cover this entire span. RBW = 100 kHz VBW = 300 kHz Sweep = auto Detector function = peak Trace = max hold Allow the trace to stabilize

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E-mail: [email protected]

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Report No.: BL-SZ2491211-601
5.8.4 Test Result
Test Data

Channel
Low Middle High

Measured Max. Out of Band
Emission (dBm) -36.29 -37.69 -36.86

Channel
Low Middle High

Measured Max. Out of Band
Emission (dBm) -36.72 -36.05 -36.82

Mode
GFSK 8-DPSK

Measured Max. Out of Band
Emission (dBm) -37.06 -35.66

GFSK

Limit (dBm)

Carrier Level

Calculated 20 dBc Limit

2.88

-17.12

3.04

-16.97

3.08

-16.92

8-DPSK

Limit (dBm)

Carrier Level

Calculated 20 dBc Limit

-0.89

-20.89

-0.75

-20.75

-0.72

-20.72

Hopping Mode

Limit (dBm)

Carrier Level

Calculated 20 dBc Limit

3.06

-16.94

-0.76

-20.76

Verdict Pass Pass Pass
Verdict Pass Pass Pass
Verdict Pass Pass

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
Test Plots GFSK LOW CHANNEL, CARRIER LEVEL

GFSK LOW CHANNEL, BAND EDGE

GFSK LOW CHANNEL, SPURIOUS 30 MHz ~ 3 GHz

GFSK LOW CHANNEL, SPURIOUS 3 GHz ~ 25 GHz

GFSK MIDDLE CHANNEL, CARRIER LEVEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
GFSK MIDDLE CHANNEL, SPURIOUS 30 MHz ~ 3 GHz

GFSK MIDDLE CHANNEL, SPURIOUS 3 GHz ~ 25 GHz

GFSK HIGH CHANNEL, CARRIER LEVEL

GFSK HIGH CHANNEL, BAND EDGE

GFSK HIGH CHANNEL, SPURIOUS 30 MHz ~ 3 GHz

GFSK HIGH CHANNEL, SPURIOUS 3 GHz ~ 25 GHz

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601 8-DPSK LOW CHANNEL, CARRIER LEVEL

8-DPSK LOW CHANNEL, BAND EDGE

8-DPSK LOW CHANNEL, SPURIOUS 30 MHz ~ 3 GHz

8-DPSK LOW CHANNEL, SPURIOUS 3 GHz ~ 25 GHz

8-DPSK MIDDLE CHANNEL, CARRIER LEVEL

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601
8-DPSK MIDDLE CHANNEL, SPURIOUS 30 MHz ~ 3 GHz

8-DPSK MIDDLE CHANNEL, SPURIOUS 3 GHz ~ 25 GHz

8-DPSK HIGH CHANNEL, CARRIER LEVEL

8-DPSK HIGH CHANNEL, BAND EDGE

8-DPSK HIGH CHANNEL, SPURIOUS 30 MHz ~ 3 GHz

8-DPSK HIGH CHANNEL, SPURIOUS 3 GHz ~ 25 GHz

Tel: +86-755-66850100

E-mail: [email protected]

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Report No.: BL-SZ2491211-601 GFSK HOPPING, CARRIER LEVEL

GFSK HOPPING BAND EDGE (LOW)

GFSK HOPPING BAND EDGE (HIGH)

GFSK Hopping Mode, SPURIOUS 30 MHz ~ 3 GHz

GFSK Hopping Mode, SPURIOUS 3GHz ~ 25 GHz

Tel: +86-755-66850100

E-mail: [email protected]

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