2ASF4-K8PROBluetooth Mechanical Keyboard

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Shenzhen Bipu Technology Co., Ltd Building 2, Floor 2, Wenkeng Industrial Area, Dafa Road No.24, Bantian, Long Gang District, Shenzhen, Guangdong, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2023/9/22 U.S. Agent Designation Shenzhen Bipu Technology Co., Ltd acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2ASF4-K8PRO): Name and company of U.S. agent: Keychron, Inc. Physical U.S. address of agent: 8 The Green ste a, Dover, DE 19901, United States FRN of U.S. agent: 0033472820 Email address of U.S. agent: [email protected] Keychron, Inc. acknowledges their obligation to accept service of process on behalf of Shenzhen Bipu Technology Co., Ltd. Shenzhen Bipu Technology Co., Ltd with the FRN [0028221521] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Nick Xu CEO Shenzhen Bipu Technology Co., Ltd Signature Nick Xu CEO Keychron, Inc. 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 4 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 4 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 4 Fig.5 Fig.6 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 4 Fig.7

Label Location: FCC ID: 2ASF4-K8PRO This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Shenzhen Tongzhou Testing Co.,Ltd FCC ID:2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 5 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID:2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 5 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID:2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 5 Fig.5 Fig.6 Bluetooth Antenna Shenzhen Tongzhou Testing Co.,Ltd FCC ID:2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 5 Fig.7 Fig.8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID:2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 5 of 5 Fig.9

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 The example values shown in Table B.2 are for illustration only. Frequency (MHz) Distance (mm) 5 10 15 20 25 30 35 40 45 50 300 39 65 88 110 129 148 166 184 201 217 450 22 44 67 89 112 135 158 180 203 226 835 9 25 44 66 90 116 145 175 207 240 1900 3 12 26 44 66 92 122 157 195 236 2450 3 10 22 38 59 83 111 143 179 219 3600 2 8 18 32 49 71 96 125 158 195 5800 1 6 14 25 40 58 80 106 136 169 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Conducted Power Results Test Mode Channel Frequency (MHz) Measured Peak Output Power (dBm) GFSK 00 2402 -3.65 39 2441 -2.66 78 2480 -2.7 Manufacturing tolerance GFSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -4.0 -3.0 -3.0 Tolerance ±(dB) 1.0 1.0 1.0 Results Test Mode Channel Frequency (MHz) Max. Tune Up Power (dBm, Peak) Max. Eirp including Tune Up (dBm, Peak) Max. Eirp including Tune Up (mW, Peak) Exemption Limit (mW) GFSK 2402 -3.0 2.3 1.70 3 2441 -2.0 3.3 2.14 3 2480 -2.0 3.3 2.14 3 The antenna gain of the EUT for BT is 5.3dBi (Max). the Maximum Eirp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required.

Application Note AN043 Small Size 2.4 GHz PCB antenna By Audun Andersen 1 KEYWORDS • CC25xx • CC24xx • CC2480 • PCB antenna • USB dongle • 2.4 GHz • Inverted F Antenna 2 INTRODUCTION The PCB antenna used on the CC2511 USB dongle reference design is described in this application note. Even if the antenna presented is for a USB dongle design it can be used in all 2.4 GHz designs, especially where small space is required for the antenna. This application note describes the antenna dimensions, the RF performance and considerations for complying with regulatory limits when using this design. The suggested antenna design requires no more than 15.2 x 5.7 mm of space and ensures a VSWR ratio of less than 2 across the 2.4 GHz ISM band when connected to a 50 ohm source. Figure 1: CC2511 USB Dongle SWRA117D Page 1 of 21 Application Note AN043 Table of Contents 1 KEYWORDS...................................................................................................................1 2 INTRODUCTION.............................................................................................................1 3 ABBREVIATIONS...........................................................................................................2 4 ANTENNA DESIGN........................................................................................................3 4.1 DESIGN GOALS..........................................................................................................3 4.2 SIMULATION...............................................................................................................3 4.3 LAYOUT AND IMPLEMENTATION...................................................................................4 5 TEST RESULTS.............................................................................................................5 5.1 REFLECTION..............................................................................................................5 5.2 RADIATION PATTERN..................................................................................................7 5.3 OUTPUT POWER......................................................................................................15 5.4 SPURIOUS EMISSION AND HARMONICS......................................................................17 6 CONCLUSION ..............................................................................................................20 7 GENERAL INFORMATION..........................................................................................21 7.1 DOCUMENT HISTORY................................................................................................21 3 ABBREVIATIONS CAD Computer Aided Design CC24xx CC2400, CC2420, CC2430 and CC2431 CC25xx CC2500, CC2510, CC2511, CC2550 and CC2520 CC2480 Z-Accel ZigBee Processor IFA Inverted F Antenna ISM Industrial, Scientific and Medical LOS Line Of Sight PCB Printed Circuit Board PER Packet Error Rate VSWR Voltage Standing Wave Ratio SWRA117D Page 2 of 21 Application Note AN043 4 ANTENNA DESIGN The PCB antenna on the CC2511 USB dongle reference design is a meandered Inverted F Antenna (IFA). The IFA was designed to match an impedance of 50 ohm at 2.45 GHz. Thus no additional matching components are necessary. 4.1 Design Goals The reflection at the feed point of the antenna determines how much of the applied power is delivered to the antenna. A reflection of less than -10 dB across the 2.4 GHz ISM band, when connected to a 50 ohm source, was a design goal. Reflection of less than -10 dB, or VSWR less than 2, ensures that more than 90% of the available power is delivered to the antenna. Bandwidth is in this document defined as the frequency band where more than 90% of the available power is delivered to the antenna. Another design goal was to fit the size of the PCB antenna on a USB dongle and to obtain good performance also when the dongle is connected to a computer. 4.2 Simulation IE3D from Zeland, which is an electromagnetic simulation tool, was used to design the antenna. The accuracy of the simulation is controlled by the mesh. An increase of the mesh increases the simulation time. Thus, for initial simulations mesh = 1 should be used. When a fairly good result is achieved a higher mesh should be used to obtain more accurate results. Comparison of simulation and measurement results shows that the measured reflection is between the result obtained with mesh = 5 and mesh = 1; see Figure 2 for details. Figure 2: Comparison of Simulation and Measurements Results SWRA117D Page 3 of 21 Application Note AN043 4.3 Layout and Implementation Small changes of the antenna dimensions may have large impact on the performance. Therefore it is strongly recommended to make an exact copy of the reference design to achieve optimum performance. The easiest way to implement the antenna is to import the gerber or DXF file showing the antenna layout. These files are named IFA_USB.spl and IFA_USB.dxf respectively and are included in the CC2511 USB dongle reference design available from http://www.ti.com\lpw. The imported file can be used as a template when drawing the antenna. By using this procedure it should be possible to make an exact copy. If the PCB CAD tool being used does not support import of DXF or gerber files, Figure 3 and Table 1 should be used to ensure correct implementation. It is recommended to generate a gerber file for comparison with IFA_USB.spl when making a manual implementation. Most gerber viewers have the possibility to import several gerber files at the same time. Thus by placing the gerber file, showing the manually implemented antenna, on top of IFA_USB.spl it is easy to verify that the antenna is correctly implemented. It is also recommended to use the same thickness and type of PCB material as used in the reference design. Information about the PCB can be found in a separate readme file included in the reference design. To compensate for a thicker/thinner P…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 1 of 24 Appendix Test Data for BT(BDR/EDR) (Conducted Measurement) Product Name: Bluetooth Mechanical Keyboard Trade Mark: Keychron Test Model: Keychron K8 Pro FCC ID: 2ASF4-K8PRO Environmental Conditions Temperature: 22.8 C Relative Humidity: 56% ATM Pressure: 100.0 kPa Test Engineer: Anna Hu Supervised by: Hugo Chen NOTE N/A Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Channel 20db EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.945 2401.529 2402.474 --- --- 2441 0.954 2440.529 2441.483 --- --- 2480 0.867 2479.541 2480.408 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 2 of 24 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 3 of 24 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Channel OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.94316 2401.5260 2402.4691 --- --- 2441 0.93493 2440.5306 2441.4655 --- --- 2480 0.91933 2479.5394 2480.4587 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 4 of 24 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 5 of 24 Appendix C: Maximum Peak conducted output power Test Result TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict DH5 Ant1 2402 -3.65 ≤20.97 PASS 2441 -2.66 ≤20.97 PASS 2480 -2.7 ≤20.97 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 6 of 24 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 7 of 24 Appendix D: Carrier frequency separation Test Result TestMode Antenna Channel Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 0.806 ≥0.636 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 8 of 24 Test Graphs DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 9 of 24 Appendix E: Time of occupancy Test Result TestMode Antenna Channel BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH5 Ant1 Hop 2.940 120 0.353 ≤0.4 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 10 of 24 Test Graphs DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 11 of 24 Appendix F: Number of hopping channels Test Result TestMode Antenna Channel Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 12 of 24 Test Graphs DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 13 of 24 Appendix G: Band edge measurements Test Result TestMode Antenna ChName Channel RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -4.18 -47.44 ≤-24.18 PASS High 2480 -3.28 -49.69 ≤-23.28 PASS Low Hop_2402 -4.64 -50.1 ≤-24.64 PASS High Hop_2480 -2.98 -49.48 ≤-22.98 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 14 of 24 Test Graphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 DH5_Ant1_High_Hop_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 15 of 24 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 16 of 24 Appendix H: Conducted Spurious Emission Test Result TestMode Antenna Channel FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 Reference -5.19 -5.19 --- PASS 30~1000 -5.19 -63.33 ≤-25.19 PASS 1000~26500 -5.19 -50.54 ≤-25.19 PASS 2441 Reference -4.05 -4.05 --- PASS 30~1000 -4.05 -62.13 ≤-24.05 PASS 1000~26500 -4.05 -50.05 ≤-24.05 PASS 2480 Reference -3.91 -3.91 --- PASS 30~1000 -3.91 -63.13 ≤-23.91 PASS 1000~26500 -3.91 -50.63 ≤-23.91 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 17 of 24 Test Graphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 DH5_Ant1_2441_0~Reference Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 18 of 24 DH5_Ant1_2441_30~1000 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 19 of 24 DH5_Ant1_2480_30~1000 DH5_Ant1_2480_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 20 of 24 Appendix I: Duty Cycle Test Result TestMode Antenna Channel Transmission Duration [ms] Transmission Period [ms] Duty Cycle [%] 1/T[kHz] DH5 Ant1 2402 2.94 3.75 78.40 0.34 2441 2.94 3.75 78.40 0.34 2480 2.94 3.75 78.40 0.34 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 21 of 24 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report No.: TZ230304122-E Page 22 of 24 Appendix J: Emissions in Restricted Bands Test Result TestMode Antenna ChName Channel Detector Freq(MHz) Result(dBm) Limit(dBm) Verdict DH5 Ant1 Low 2402 AV 2310.000 -46.25 ≤-41.20 PASS AV 2378.225 -45.86 ≤-41.20 PASS AV 2390.000 -45.88 ≤-41.20 PASS Peak 2310.000 -39.26 ≤-21.20 PASS Peak 2327.720 -36.51 ≤-21.20 PASS Peak 2390.000 -37.6 ≤-21.20 PASS High 2480 AV 2483.500 -45.38 ≤-41.20 PASS AV 2498.960 -45.2 ≤-41.20 PASS AV 2500.000 -45.31 ≤-41.20 PASS Peak 2483.500 -35.52 ≤-21.20 PASS Peak 2483.520 -35.52 ≤-21.20 PASS Peak 2500.000 -37.77 ≤-21.20 PASS Note： 1. The Antenna Gain is compensated in the graph with 2dBi and Antenna Gain which is Higher. 2. The limit in dBm for average detector is conversion from 54dBuV/m, according to 15.209(a). The limit in dBm for peak detector is 20dB above the limit of average detector in dBm. Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO Report N…

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Report No.: TZ230304122-E Page 1 of 37 FCC TEST REPORT Test report On Behalf of Shenzhen Bipu Technology Co., Ltd For Bluetooth Mechanical Keyboard Model No: Keychron K8 Pro, Keychron K2 Pro, Keychron K4 Pro, Keychron K6 Pro, Keychron K10 Pro, Keychron K12 Pro, Keychron K14 Pro FCC ID: 2ASF4-K8PRO Prepared for : Shenzhen Bipu Technology Co., Ltd Building 2, Floor 2, Wenkeng Industrial Area, Dafa Road No.24, Bantian, Long Gang District, Shenzhen, Guangdong, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2023/6/2–2023/6/13 Date of Report: 2023/6/13 Report Number: TZ230304122-E The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ230304122-E Page 2 of 37 TEST RESULT CERTIFICATION Applicant’s name ................. : Shenzhen Bipu Technology Co., Ltd Address .................................. : Building 2, Floor 2, Wenkeng Industrial Area, Dafa Road No.24, Bantian, Long Gang District, Shenzhen, Guangdong, China Manufacture's Name ............ : Shenzhen Bipu Technology Co., Ltd Address .................................. : Building 2, Floor 2, Wenkeng Industrial Area, Dafa Road No.24, Bantian, Long Gang District, Shenzhen, Guangdong, China Product description Trade Mark ............................. : Keychron Product name ........................... : Bluetooth Mechanical Keyboard Model No ................................ : Keychron K8 Pro, Keychron K2 Pro, Keychron K4 Pro, Keychron K6 Pro, Keychron K10 Pro, Keychron K12 Pro, Keychron K14 Pro Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................. ........... : Date (s) of performance of tests ........... : 2023/6/2-2023/6/13 Date of Issue ......................................... : 2023/6/13 Test Result ............................................ : PASS Testing Engineer : (Nancy Li) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ230304122-E Page 3 of 37 Revision History Revision Issue Date Revisions Revised By 00 2023/6/13 Initial Issue Andy Zhang Report No.: TZ230304122-E Page 4 of 37 TABLE OF CONTENTS Description Page 1. GENERAL INFORMATION ................................................................................................................ 5 1.1. Description of Device (EUT) ................................................................................................................... 5 1.2 Support equipment List ................................................................................................................................ 5 1.3 EUT configuration ......................................................................................................................................... 5 The following peripheral devices and interface cables were connected during the measurement: ....... 5 1.4 External I/O Cable ........................................................................................................................................ 5 1.5 Description of Test Facility .......................................................................................................................... 6 1.6 Statement of the Measurement Uncertainty ............................................................................................. 7 1.7 Measurement Uncertainty ........................................................................................................................... 7 1.8 Description of Test Modes .......................................................................................................................... 7 2. TEST METHODOLOGY ...................................................................................................................... 8 2.1 EUT Configuration ........................................................................................................................................ 8 2.2 EUT Exercise ................................................................................................................................................ 8 2.3 General Test Procedures ............................................................................................................................ 8 2.4. Test Sample ................................................................................................................................................. 8 3. SYSTEM TEST CONFIGURATION .................................................................................................. 9 3.1 Justification .................................................................................................................................................... 9 3.2 EUT Exercise Software ............................................................................................................................... 9 3.3 Special Accessories ..................................................................................................................................... 9 3.4 Block Diagram/Schematics ......................................................................................................................... 9 3.5 Equipment Modifications .....................................................................................................…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 TEST SETUP PHOTOS OF THE EUT Radiated Emission Below 1GHz Radiated Emission Above 1GHz Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2ASF4-K8PRO This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Conducted Emission