RF Test Report

Applicant Information

Applicant Name: Shenzhen DOOGEE Hengtong Technology CO.,LTD

Address: B, 2/F, Building A4, Silicon Valley Power Digital Industrial Park, No. 22, Longhua New District, Shenzhen, China

Equipment Under Test (EUT) Details

EUT Name: Tablet

Brand Name: DOOGEE

Model Number: Tab E3 Max

Series Model Number: Tab E3 Max VIP Edition, Tab E3 Pro, Tab E3 Pro VIP Edition, Tab E3 Pro+, Tab E3 Pro+ VIP Edition, Tab E3 Pro Max, Tab E3 Pro Max VIP Edition, Tab E3 Ultra, Tab E3 Power

FCC ID: 2AX4YTABE3MAX

Test Laboratory Information

Company Name: BTF Testing Lab (Shenzhen) Co., Ltd.

Address: 101/201/301, Building 1, Block 2, Tantou Industrial Park, Tantou Community, Songgang Subdistrict, Bao'an District, Shenzhen, China

Report Number: BTF250514R00702

Test Standards: FCC CFR Title 47 Part 15 Subpart C (§15.247)

Test Conclusion: Pass

Date of sample receipt: 2025-03-31

Test date: 2025-04-01 to 2025-05-22

Date of issue: 2025-05-23

Test by: Sean He (Tester)

Prepared by: Chris Liu (Project engineer)

Approved by: Ryan.CJ (EMC manager)

Revision History

Note: Once the revision has been made, then previous versions reports are invalid.

Introduction

1.1 Laboratory Location

Test location: BTF Testing Lab (Shenzhen) Co., Ltd.

Address: F101, 201 and 301, Building 1, Block 2, Tantou Industrial Park, Tantou Community, Songgang Street, Bao'an District, Shenzhen, China

Phone number: +86-0755-23146130

Fax number: +86-0755-23146130

1.2 Laboratory Facility

The test facility is recognized, certified, or accredited by the following organizations:

• FCC - Designation No.: CN1409
• CNAS - Registration No.: CNAS L17568
• A2LA - Registration No.: 6660.01

BTF Testing Lab (Shenzhen) Co., Ltd. is accredited as a testing laboratory by FCC (Federal Communications Commission) and accredited to ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories.

1.3 Announcement

• The test report is invalid if not marked with the signatures of the persons responsible for preparing, reviewing and approving the test report.
• The test report is invalid if there is any evidence and/or falsification.
• This document may not be altered or revised in any way unless done so by BTF and all revisions are duly noted in the revisions section.
• Content of the test report, in part or in full, cannot be used for publicity and/or promotional purposes without prior written approval from the laboratory.
• The laboratory is only responsible for the data released by the laboratory, except for the part provided by the applicant.

Product Information

2.1 Application Information

Company Name: Shenzhen DOOGEE Hengtong Technology CO.,LTD

Address: B, 2/F, Building A4, Silicon Valley Power Digital Industrial Park, No. 22, Longhua New District, Shenzhen, China

2.2 Manufacturer Information

Company Name: Shenzhen DOOGEE Hengtong Technology CO.,LTD

Address: B, 2/F, Building A4, Silicon Valley Power Digital Industrial Park, No. 22, Longhua New District, Shenzhen, China

2.3 Factory Information

Company Name: Shenzhen DOOGEE Hengtong Technology CO.,LTD

Address: B, 2/F, Building A4, Silicon Valley Power Digital Industrial Park, No. 22, Longhua New District, Shenzhen, China

2.4 General Description of Equipment under Test (EUT)

• EUT name: Tablet
• Under test model name: Tab E3 Max
• Series model name: Tab E3 Max VIP Edition, Tab E3 Pro, Tab E3 Pro VIP Edition, Tab E3 Pro+, Tab E3 Pro+ VIP Edition, Tab E3 Pro Max, Tab E3 Pro Max VIP Edition, Tab E3 Ultra, Tab E3 Power
• Description of model name differentiation: There is no difference except the name of the model
• Hardware Version: M100TCER100-TC67DG
• Software Version: DOOGEE-Tab E3 Max-EEA-Android15.0
• Rating: DC 3.87V from battery or DC 9V from Fast Charger

2.5 Technical Information

• Operation frequency: 2402MHz ~ 2480MHz
• Channel numbers: 40
• Channel separation: 2MHz
• Modulation technology: GFSK
• Data rate: 1 Mbps (LE 1M PHY), 2 Mbps (LE 2M PHY)
• Max. Conducted Peak Power: 7.01dBm
• Antenna type: PIFA Antenna
• Antenna gain: 2.23 dBi (declare by Applicant)
• Antenna transmit mode: SISO (1TX, 1RX)

Fast Charger

Manufacturer: Shenzhen Huajin Electronics Co.,LTD

Model: HJ-PD18W-US

Input: AC100-240V~ 50/60Hz 0.6A

Output: 5.0V=3.0A 15.0W OR 9.0V=2.0A 18.0W OR 12.0V=1.5A 18.0W MAX

Channel List

Remark: Channel 0, 19 & 39 have been tested.

Summary of Test Results

3.1 Test Standards

3.2 Uncertainty of Test

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.

3.3 Summary of Test Result

Test Configuration

4.1 Test Equipment List

Radiated test method

Conducted Emission Test

Conducted test method

4.2 Test Auxiliary Equipment

4.3 Test Modes

4.4 Test software

Test software: DOOGEE-Tab E3 Max-EEA-Android15.0

Engineering mode: Default

Version:

Power Class:

4.5 Test Setup Block

1) Conducted emission measurement:

A diagram showing the test setup for conducted emission measurement. It includes EUT, AF, LISN, Pulse Limiter, Receive, Non-conducting table, Vertical Reference Ground Plane, and Reference Ground Plane.

2) Conducted test method:

A diagram showing the test setup for conducted test method. It includes EUT, Temperature Humidity Chamber, DC Power Source, RF Control Unit and Sensor Unit, and test equipment like E4438C, N5182A, CMW500, N9020A.

3) Radiated test method:

Diagrams illustrating the radiated test method setup for below 1GHz and above 1GHz. Both setups include EUT, Turntable, Reference Ground Plane, Receiver, and Preamplifier. The distance between EUT and antenna is 3m.

Evaluation Results (Evaluation)

5.1 Antenna requirement

Test 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 shall be considered sufficient to comply with the provisions of this section.

5.1.1 Conclusion: Pass

An image shows the internal components of the tablet, with labels pointing to GSM/WCDMA/LTE ANT and GPS/WIFI/BT ANT.

Radio Spectrum Matter Test Results (RF)

6.1 Conducted Emission at AC power line

Test Requirement: Except as shown in paragraphs (b)and (c)of this section, for an intentional radiator that is designed to be connected to the public utility (AC) power line, the radio frequency voltage that is conducted back onto the AC power line on any frequency or frequencies, within the band 150 kHz to 30 MHz, shall not exceed the limits in the following table, as measured using a 50 μH/50 ohms line impedance stabilization network (LISN).

Test Method: Refer to ANSI C63.10-2020 section 6.2, standard test method for ac power-line conducted emissions from unlicensed wireless devices

Test Limit:

*Decreases with the logarithm of the frequency.

6.1.1 E.U.T. Operation:

• Operating Environment: Temperature: 25 °C, Humidity: 49.5%, Atmospheric Pressure: 1010 hpa, Test Voltage: AC 120V 60Hz

6.1.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.1.3 Test Data:

TM1 / Line: Line / Band: GFSK 1M 2402MHz

A graph shows the conducted emission measurement results with frequency on the x-axis and dBuV on the y-axis. Lines indicate Quasi-peak and Average limits.

TM1 / Line: Neutral / Band: GFSK 1M 2402MHz

A graph shows the conducted emission measurement results for the neutral line.

6.2 Occupied Bandwidth

Test Requirement: Systems using digital modulation techniques may operate in the 902-928 MHz, and 2400-2483.5 MHz bands. The minimum 6 dB bandwidth shall be at least 500 kHz.

Test Method: DTS bandwidth Section (a)(2), Systems using digital modulation techniques may operate in the 902-928 MHz, and 2400-2483.5 MHz bands. The minimum 6 dB bandwidth shall be at least 500 kHz.

Procedure:

1. Set RBW = 100 kHz.
2. Set the VBW >= [3 × RBW].
3. Detector = peak.
4. Trace mode = max hold.
5. Sweep = auto couple.
6. Allow the trace to stabilize.
7. Measure the maximum width of the emission that is constrained by the frequencies associated with the two outermost amplitude points (upper and lower frequencies) that are attenuated by 6 dB relative to the maximum level measured in the fundamental emission.

6.2.1 E.U.T. Operation:

• Operating Environment: Temperature: 23.7 °C, Humidity: 53.4%, Atmospheric Pressure: 1010 hpa, Test Voltage: AC 120V 60Hz

6.2.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.2.3 Test Data:

Please Refer to Appendix for Details.

6.3 Maximum Conducted Output Power

Test Requirement: 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. Maximum Conducted Output Power is defined as the total transmit power delivered to all antennas and antenna elements averaged across all symbols in the signaling alphabet when the transmitter is operating at its maximum power control level. Power must be summed across all antennas and antenna elements. The average must not include any time intervals during which the transmitter is off or is transmitting at a reduced power level. If multiple modes of operation are possible (e.g., alternative modulation methods), the maximum conducted output power is the highest total transmit power occurring in any mode.

Test Method: Maximum peak conducted output power

Test Limit: 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. Maximum Conducted Output Power is defined as the total transmit power delivered to all antennas and antenna elements averaged across all symbols in the signaling alphabet when the transmitter is operating at its maximum power control level. Power must be summed across all antennas and antenna elements. The average must not include any time intervals during which the transmitter is off or is transmitting at a reduced power level. If multiple modes of operation are possible (e.g., alternative modulation methods), the maximum conducted output power is the highest total transmit power occurring in any mode.

Procedure: ANSI C63.10-2020, section 11.9.1 Maximum peak conducted output power

6.3.1 E.U.T. Operation:

• Operating Environment: Temperature: 23.7 °C, Humidity: 53.4%, Atmospheric Pressure: 1010 hpa

6.3.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.3.3 Test Data:

Please Refer to Appendix for Details.

6.4 Power Spectral Density

Test Requirement: For digitally modulated systems, the power spectral density conducted from the intentional radiator to the antenna shall not be greater than 8 dBm in any 3 kHz band during any time interval of continuous transmission. This power spectral density shall be determined in accordance with the provisions of paragraph (b) of this section. The same method of determining the conducted output power shall be used to determine the power spectral density.

Test Method: Maximum power spectral density level in the fundamental emission

Test Limit: For digitally modulated systems, the power spectral density conducted from the intentional radiator to the antenna shall not be greater than 8 dBm in any 3 kHz band during any time interval of continuous transmission. This power spectral density shall be determined in accordance with the provisions of paragraph (b) of this section. The same method of determining the conducted output power shall be used to determine the power spectral density.

6.4.1 E.U.T. Operation:

• Operating Environment: Temperature: 23.7 °C, Humidity: 53.4%, Atmospheric Pressure: 1010 hpa

6.4.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.4.3 Test Data:

Please Refer to Appendix for Details.

6.5 Emissions in non-restricted frequency bands

Test Requirement: 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.

Test Method: Emissions in nonrestricted frequency bands

Test Limit: 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.

Procedure: ANSI C63.10-2020 Section 11.11.1, Section 11.11.2, Section 11.11.3

6.5.1 E.U.T. Operation:

• Operating Environment: Temperature: 23.7 °C, Humidity: 53.4%, Atmospheric Pressure: 1010 hpa, Test Voltage: AC 120V 60Hz

6.5.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.5.3 Test Data:

Please Refer to Appendix for Details.

6.6 Band edge emissions (Radiated)

Test Requirement: 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)).

Test Method: Radiated emissions tests

Test Limit:

** Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz. However, operation within these frequency bands is permitted under other sections of this part, e.g., §§ 15.231 and 15.241.

Procedure: ANSI C63.10-2020 section 6.10.5.2

6.6.1 E.U.T. Operation:

• Operating Environment: Temperature: 22.6 °C, Humidity: 54.8%, Atmospheric Pressure: 1010 hpa, Test Voltage: AC 120V 60Hz

6.6.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.6.3 Test Data:

Remark: During the test, pre-scan 1M, 2M mode, found 2M was worse case mode. The report only reflects the test data of worst mode.

Test Results

PASS 2310MHz~2410MHz

Test Mode: 2Mbps: GFSK TX 2402MHz

PASS 2450MHz~2550MHz

Test Mode: 2Mbps: GFSK TX 2480MHz

Note: 1. Means other frequency and mode comply with standard requirements and at least have 20dB margin. 2. Correct Factor=Cable Loss+ Antenna Factor-Amplifier Gain. Result=Reading + Correct Factor. Margin= Result-Limit. 3. If the limits for the measurement with the average detector are met when using a receiver with a peak detector, the test unit shall be deemed to meet both limits and the measurement with the average detector need not be carried out. Note: Margin=Level-Limit=Reading+factor-Limit

6.7 RADIATED EMISSIONS (below 1GHz)

Test Requirement: 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)).

Test Method: Radiated emissions tests

Test Limit:

** Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz. However, operation within these frequency bands is permitted under other sections of this part, e.g., §§ 15.231 and 15.241.

Procedure: ANSI C63.10-2020 section 6.6.4

6.7.1 E.U.T. Operation:

• Operating Environment: Temperature: 22.6 °C, Humidity: 54.8%, Atmospheric Pressure: 1010 hpa, Test Voltage: AC 120V 60Hz

6.7.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.7.3 Test Data:

TM1 / Polarization: Horizontal / Band: GFSK 1M 2402MHz

A graph shows radiated emission measurement results from 30 MHz to 1000 MHz. Lines indicate Quasi-peak limits and margins.

TM1 / Polarization: Vertical / GFSK 1M 2402MHz

A graph shows radiated emission measurement results from 30 MHz to 1000 MHz for the vertical polarization.

6.8 RADIATED EMISSIONS (above 1GHz)

Test Requirement: 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)).

Test Method: Radiated emissions tests

Test Limit:

** Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz. However, operation within these frequency bands is permitted under other sections of this part, e.g., §§ 15.231 and 15.241.

Procedure: ANSI C63.10-2020 section 6.6.4

6.8.1 E.U.T. Operation:

• Operating Environment: Temperature: 22.6 °C, Humidity: 54.8%, Atmospheric Pressure: 1010 hpa, Test Voltage: AC 120V 60Hz

6.8.2 Test Setup

See section 4.5 for test setup description. The photo of test setup please refer to Appendix I Test Setup Photos

6.8.3 Test Data:

Remark: During the test, pre-scan 1M, 2M mode, found 2M was worse case mode. The report only reflects the test data of worst mode.

Test Mode: GFSK TX Low

Test Mode: GFSK TX Mid

Test Mode: GFSK TX High

Note:Margin=Level-Limit=Reading+factor-Limit

Test Setup Photos

Please refer to the Appendix I Test Setup Photos

EUT Constructional Details (EUT Photos)

Please refer to the Appendix II External Photos & Appendix III Internal Photos