Luxshare Precision Industry Co.,Ltd. TEST REPORT

Measurement/Technical Report

This report concerns: Original Grant

Equipment Type: DXX - Part 15 Low Power Communication Device Transmitter

Deferred grant requested per 47 CFR 0.457(d)(1)(ii): No

Transition Rules Request per 15.37?: No

This report assumes Part 15, Subpart C for intentional radiator - the new 47 CFR [10-1-21 Edition] provision.

Report Prepared By: Allen Qin, Intertek Testing Services Shenzhen Ltd. Longhua Branch

1.0 Summary of Test Result

Applicant: Luxshare Precision Industry Co.,Ltd.

Applicant Address: Floor 2, Block A, Sanyo New Industrial Area, West Haoyi Community, Shajing Subdistrict Office, Bao an District Shenzhen, China

Manufacturer: Luxshare Precision Industry Co.,Ltd.

Manufacturer Address: Floor 2, Block A, Sanyo New Industrial Area, West Haoyi Community, Shajing Subdistrict Office, Bao an District Shenzhen, China

Model: VSN:100133520

FCC ID: 2AYYS-8822K2VTG

Notes: The EUT uses an Integral Antenna which in accordance to Section 15.203 is considered sufficient to comply with the provisions of this section.

2.0 General Description

2.1 Product Description

The equipment under test (EUT) is an onn. Full HD Streaming Device Google TV with Bluetooth 5.0 (dual-mode) function operating in 2402-2480MHz, 2.4G WIFI function operating in 2412-2462MHz and 5G WIFI function operating in 5150MHz~5250 MHz, 5250MHz~5350MHz, 5470MHz-5725MHZ, 5725MHz~5850MHz. The EUT is powered by DC 5V from an adapter.

Bluetooth(EDR):

• Antenna Type: Integral antenna
• Modulation Type: GFSK, π/4-DQPSK and 8-DPSK
• Antenna Gain: 2.75dBi Max
• Bluetooth Version: 5.0

For electronic filing, the brief circuit description is saved with filename: descri.pdf.

2.2 Related Submittal(s) Grants

This is an application for certification of a transceiver for the onn. Full HD Streaming Device Google TV which has classic Bluetooth (EDR) function. Separate reports cover BT BLE (230908023SZN-002), 2.4GHz WIFI (230908023SZN-003), and 5GHz WIFI (230908023SZN-004).

2.3 Test Methodology

Measurements were performed according to ANSI C63.10 (2013). Radiated emission measurement was conducted in a Semi-anechoic chamber, and conducted emission measurement was performed in a shield room. Preliminary scans determined worst-case modes. Radiated tests were performed at a 3-meter antenna to EUT distance. Other measurements followed part 2 of CFR 47.

2.4 Test Facility

Testing was performed at Intertek Testing Services Shenzhen Ltd. Longhua Branch, located at 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China. This facility is FCC registered (Number: CN1188).

3.0 System Test Configuration

3.1 Justification

The system was configured for testing in a typical customer usage scenario, following ANSI C63.10 (2013). The EUT was powered by DC 5V. DH1, DH3 & DH5 modes with GFSK, π/4-DQPSK, and 8-DPSK modulation were tested. Emissions below 30 MHz were maximized by rotating the EUT 360° and adjusting antenna height (1m above ground) and polarization. For other emissions, the EUT was rotated 360°, antenna height varied from 1m to 4m, and polarization was changed to find maximum levels. The EUT and transmitting antenna were centered on the turntable. The EUT was placed on a turntable to allow for maximization of emissions across three orthogonal axes.

3.2 EUT Exercising Software

A client-provided program was used to exercise system components during testing, simulating typical use. The worst-case configuration was used for all tests. The test software allowed control of the operating channel and output power level. Software used: CMD.

3.3 Special Accessories

N/A

3.4 Equipment Modification

No modifications were installed prior to testing by Luxshare Precision Industry Co.,Ltd. or by Intertek Testing Services Shenzhen Ltd. Longhua Branch.

3.5 Measurement Uncertainty

Measurement uncertainty was considered in determining the test conclusion.

3.6 Support Equipment List and Description

4.0 Emission Results

Data reflects worst-case configurations yielding the highest emission levels.

4.1 Radiated Test Results

A sample calculation, configuration photographs, and data tables are included.

4.1.1 Field Strength Calculation

Field strength is calculated by adding spectrum analyzer readings to factors for preamplifiers, antennas, cables, pulse desensitization, and average factors. The formula is:

FS = RA + AF + CF - AG + PD + AV

Where:

• FS = Field Strength in dBµV/m
• RA = Receiver Amplitude (including preamplifier) in dBµV
• CF = Cable Attenuation Factor in dB
• AF = Antenna Factor in dB
• AG = Amplifier Gain in dB
• PD = Pulse Desensitization in dB
• AV = Average Factor in -dB

An example calculation is provided: With RA=62.0 dBµV, AF=7.4 dB, CF=1.6 dB, AG=29.0 dB, PD=0 dB, AV=-10 dB, the calculated FS is 42 dBµV/m. This converts to 125.9 µV/m.

4.1.2 Radiated Emission Configuration Photograph

Configuration photographs are saved with filename: radiated photos.pdf.

4.1.3 Antenna Information

Antenna specifications are in ANT BT.pdf; antenna photos are in description.pdf.

4.1.4 Radiated Emissions

The following data lists significant emission frequencies, limits, and margins of compliance. Negative margins indicate emissions below the limit. Simultaneous transmission was considered; only worst-case data is reported.

Worst Case Radiated Emission: 707.586834 MHz

Judgement: Passed by 7.4 dB

Test Personnel: Allen Qin, Engineer

Date: 09 September 2023

Horizontal Polarity Emissions

Vertical Polarity Emissions

4.1.5 Transmitter Spurious Emissions (Radiated)

Worst Case Radiated Emission: 2402.000 MHz

Judgement: Passed by 5.6 dB

Test Personnel: Allen Qin, Engineer

Date: 09 September 2023

Table 1: Radiated Emissions (2402MHz)

Table 2: Radiated Emissions (2441MHz)

Table 3: Radiated Emissions (2480MHz)

Notes: Peak detector used. Measurements at 3 meters. Harmonic emissions not detected at 3m were measured at 0.3m with inverse proportional extrapolation. Negative margins indicate emissions below the limit. Horn antenna used for emissions over 1000MHz.

Test Engineer: Allen Qin

5.0 Equipment Photographs

Photographs are saved with filenames: external photos.pdf & internal photos.pdf.

6.0 Product Labelling

FCC ID label artwork and location are saved with filename: label.pdf.

7.0 Technical Specifications

Block diagram and schematics are saved with filenames: block.pdf and circuit.pdf.

8.0 Instruction Manual

A preliminary copy of the Instruction Manual is saved with filename: manual.pdf. This manual will be provided to the end-user with each unit sold/leased in the United States.

9.0 Miscellaneous Information

9.1 Discussion of Pulse Desensitization

Pulse desensitivity is not applicable for this device. The effective period (Teff) is approximately 625µs for Bluetooth. With a resolution bandwidth (3dB) of 1MHz, the pulse desensitivity factor is 0dB.

9.2 Calculation of Average Factor

Based on Bluetooth Specification Version 5.0 (EDR mode) and worst-case AFH mode, the transmitter ON time is independent of packet type (DH1, DH3, DH5) and packet length. The AFH mode Duty cycle connection factor is calculated as follows:

• Channel hop rate = 800 hops/second (AFH Mode)
• Adjusted channel hop rate for DH5 mode = 133.33 hops/second
• Time per channel hop = 1 / 133.33 hops/second = 7.5 ms
• Time to cycle through all channels = 7.5 ms x 20 channels = 150 ms
• Number of times transmitter hits on one channel = 100 ms / 150 ms = 1 time(s)
• Worst case dwell time = 7.5 ms
• Duty cycle connection factor = 20log10 (7.5ms / 100ms) = -22.5 dB

9.3 Emissions Test Procedures

Tests were conducted following procedures described by Intertek Testing Services for transmitters under Part 15, Subpart C rules, adhering to ANSI C63.10 - 2013. The EUT was placed on a turntable (0.8m height up to 1GHz, 1.5m height above 1GHz). Rotation and cable manipulation were used to find maximum emissions. The EUT was adjusted through three orthogonal axes, and antenna height and polarization were varied. Radiated emissions used a peak detector; average readings were derived from duty cycle measurements (detailed in section 9.4). The frequency range scanned was from 9 kHz to the tenth harmonic of the highest fundamental frequency or 40 GHz, whichever is lower. Conducted emissions used QP & AV mode with an IFBW of 9 kHz from 150 kHz to 30MHz.

9.4 Emissions Test Procedures (cont'd)

The EUT was warmed up for 15 minutes. AC power was varied from 85% to 115% nominal. If battery-powered, a new, fully charged battery was used. Conducted measurements followed ANSI C63.10 - 2013. IF bandwidths used were 10 kHz for emissions below 30 MHz and 120 kHz for emissions from 30 MHz to 1000 MHz. For pulsed transmissions, bandwidth was adjusted per Hewlett Packard Application Note 150-2. Above 1000 MHz, a resolution bandwidth of 1 MHz was used. Transmitter measurements were typically at 3 meters, but closer distances (1 meter or less) were used to ensure low noise floors, with measurements extrapolated to 3 meters using inverse scaling.

10.0 Test Equipment List

This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program.

Intertek Testing Services Shenzhen Ltd. Longhua Branch
101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, ShenZhen, P.R. China
Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6751