Test report

FCC ID: 2ADDW-TB-WDC08

Test Report

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FCCID_4477234

Page 2 of 31 Report No.: A1908310-C01-R01

TABLE OF CONTENTS

1. Test Result Summary .................................................................................. 5
2. General Information .................................................................................... 6
2.1. DESCRIPTION OF DEVICE (EUT) ........................................................................................................... 6
2.2. ACCESSORIES OF DEVICE (EUT) .......................................................................................................... 7
2.3. TESTED SUPPORTING SYSTEM DETAILS ................................................................................................ 7
2.4. BLOCK DIAGRAM OF CONNECTION BETWEEN EUT AND SIMULATORS ...................................................... 7
2.5. DESCRIPTION OF TEST MODES ............................................................................................................. 7
2.6. TEST CONDITIONS ............................................................................................................................... 7
2.7. TEST FACILITY .................................................................................................................................... 8
2.8. MEASUREMENT UNCERTAINTY ............................................................................................................. 8
2.9. TEST EQUIPMENT LIST ......................................................................................................................... 9

3. Test Results and Measurement Data ...................................................... 10
3.1. CONDUCTED EMISSION ...................................................................................................................... 10
3.2. RADIATED SPURIOUS EMISSION MEASUREMENT .................................................................................. 13
3.3. TEST SPECIFICATION ......................................................................................................................... 19

4. Antenna Requirements ............................................................................. 21
4.1. LIMIT ................................................................................................................................................ 21
4.2. RESULT ............................................................................................................................................ 21

5. Photos of test setup .................................................................................. 22
6. Photographs of EUT .................................................................................. 24

Page 4 of 31 Report No.: A1908310-C01-R01

Revision History
Revision Issue Date Revisions Revised By
V0 September 18, 2019 Initial released Issue Simple Guan

Page 5 of 31 Report No.: A1908310-C01-R01

1. Test Result Summary

Requirement CFR 47 Section Result
Antenna requirement §15.203 PASS

AC Power Line Conducted
§15.207 PASS
Emission

Spurious Emission §15.209(a)(f) PASS

Occupied Bandwidth §15.215 (c) PASS
Note:
1. PASS: Test item meets the requirement.

2. Fail: Test item does not meet the requirement.

3. N/A: Test case does not apply to the test object.

4. The test result judgment is decided by the limit of test standard.

Page 6 of 31 Report No.: A1908310-C01-R01

2. General Information
2.1. Description of Device (EUT)
EUT Name : Wireless Power Bank with Charging Dock

Model No. : TB-WDC08
DIFF. : N/A

Trademark : N/A

Power supply : Input : DC 9V/4A
USB-A Output : DC 5V/2A
Wireless Output: 5W/10W (Max)

Operation frequency : 125-205KHz

Modulation : MSK

Antenna Type : Coil Antenna

Software version : V1.0

Hardware version : V1.0

Page 8 of 31 Report No.: A1908310-C01-R01

2.7. Test Facility
Shenzhen Alpha Product Testing Co., Ltd
Building i, No.2, Lixin Road, Fuyong Street, Bao'an District, 518103, Shenzhen, Guangdong, China

June 21, 2018 File on Federal Communication Commission
Registration Number: 293961

July 15, 2019 Certificated by IC
Registration Number: CN0085

2.8. Measurement Uncertainty
(95% confidence levels, k=2)
Item MU Remark
Uncertainty for Conducted Emission Test 2.74dB

Uncertainty for Radiation Emission test in 3m chamber 2.13 dB Polarize: V
(below 30MHz) 2.57dB Polarize: H
Uncertainty for Radiation Emission test in 3m chamber 3.77dB Polarize: V
(30MHz to 1GHz) 3.80dB Polarize: H

Uncertainty for Radiation Emission test in 3m chamber 4.16dB Polarize: H
(1GHz to 25GHz) 4.13dB Polarize: V
Uncertainty for radio frequency 5.4×10-8
Uncertainty for conducted RF Power 0.37dB

Page 11 of 31 Report No.: A1908310-C01-R01

3.1.2. Test data

Please refer to following diagram for individual

Test Mode : Full Load, Half Load, Empty Load
Test Results : PASS
Note: The test results are listed in next pages.
This mode is worst case mode, so this report only reflected the worst mode.
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 and quasi-peak detector need not be carried out.
If the limits for the measurement with the average detector are met when using a
receiver with a quasi-peak detector, the test unit shall be deemed to meet both limits and
the measurement with the average detector need not be carried out.

Page 15 of 31 Report No.: A1908310-C01-R01

emissions shall be restricted to a range of heights of from
1 m to 4 m above the ground or reference ground plane.
2. Corrected Reading: Antenna Factor + Cable Loss + Read
Level - Preamp Factor = Level
3. For measurement below 1GHz, If the emission level of the
EUT measured by the peak detector is 3 dB lower than
the applicable limit, the peak emission level will be
reported. Otherwise, the emission measurement will be
repeated using the quasi-peak detector and reported.
4. Use the following spectrum analyzer settings:
(1) Span shall wide enough to fully capture the emission
being measured;
(2) Set RBW=100 kHz for f < 1 GHz; VBW ≥RBW;
Sweep = auto; Detector function = peak; Trace = max
hold;
(3) Set RBW = 1 MHz, VBW= 3MHz for f  1 GHz for
peak measurement.
For average measurement: VBW = 10 Hz, when duty
cycle is no less than 98 percent. VBW ≥ 1/T, when
duty cycle is less than 98 percent where T is the
minimum transmission duration over which the
transmitter is on and is transmitting at its maximum
power control level for the tested mode of operation.
Test results: PASS

Page 16 of 31 Report No.: A1908310-C01-R01

3.2.2. Test Data
Please refer to following diagram for individual

Frequency Range : 9KHz~30MHz
Test Mode : TX: channel low, channel mid, channel high (Full Load)
Test Results : PASS
Note: 1. The test results are listed in next pages.
2. This mode is worst case mode, so this report only reflected the worst mode.
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 quasi-peak detector need not be carried out.

Antenna Cable Amp
Freq. Reading Result Limit Margin State
Factor loss Factor Detect
(dBuV/m) or
(MHz) (dBuV/m) dB/m dB dB (dBuV/m) (dB) P/F
at 3 m
0.125 24.36 48.34 0.16 29.87 42.99 125.67 -82.67 PK PASS
0.125 18.68 48.34 0.16 29.87 37.31 105.67 -68.36 AV PASS
0.175(F) 92.59 48.34 0.16 29.87 111.22 122.74 -11.52 PK PASS
0.175(F) 69.53 48.34 0.16 29.87 88.16 102.74 -14.58 AV PASS
0.205 49.10 48.38 0.17 29.89 67.76 121.37 -53.61 PK PASS
0.205 46.68 48.38 0.17 29.89 65.34 101.37 -36.03 AV PASS
0.35 44.90 48.44 0.19 29.89 63.64 116.72 -53.09 PK PASS
0.35 42.01 48.44 0.19 29.89 60.75 96.72 -35.97 AV PASS
0.45 44.95 48.47 0.19 29.89 63.72 114.54 -50.82 PK PASS
0.45 42.26 48.47 0.19 29.89 61.03 94.54 -33.51 AV PASS
1.928 18.09 49.12 0.2 29.94 37.47 60 -22.53 QP PASS
1.920 21.54 49.12 0.2 29.94 40.92 60 -19.08 QP PASS

Note: F means Fundamental frequcency.

Page 17 of 31 Report No.: A1908310-C01-R01

Frequency Range : 30MHz~1000MHz
Test Mode : Full Load, Half Load, Empty Load
Test Results : PASS
Note: 1. The test results are listed in next pages.
2. This mode is worst case mode, so this report only reflected the worst mode.
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 quasi-peak detector need not be carried out.

Frequency Range : Above 1GHz
EUT : / Test Date : /
M/N : / Temperature : /
Test Engineer : / Humidity : /
Test Mode : /
Test Results : N/A
1. The highest frequency of the internal sources of the EUT is less than 108 MHz, the
Note: measurement shall only be made up to 1 GHz. So the frequency rang above 1GHz
radiation test not applicable.

Page 21 of 31 Report No.: A1908310-C01-R01

4. Antenna Requirements
4.1. Limit
15.203 requirement:
An intentional radiator shall be designed to ensure that no antenna other than that furnished by
the responsible party shall be used with the device. The use of a permanently attached
antenna or of an antenna that uses a unique coupling to the intentional radiator, the
manufacturer may design the unit so that a broken antenna can be replaced by the user, but the
use of a standard antenna jack or electrical connector is prohibited.
4.2. Result
The antenna is coil antenna which permanently attached. It complies with the standard
requirement.

Document Created: 2019-10-11 11:44:53
Document Modified: 2019-10-11 11:44:53

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