Test Report

FCC ID: PRDKB30

Test Report

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FCCID_3854241

I#] TEST Model: KS4 FCC Part 15C Measurement and Test Report For Acrox Technologies Co., Ltd. 4F., No.89, Minshan St., Nethu Dist.,Taipei City 114, Taiwan, R.0O.C FCC ID: PRDKB30 FCC Rule(s): FCC Part 15.249 Product Description: Wireless Keyboard Tested Model: KS4 Report No.: STR180580081 Sample Receipt Date: 2018—05—02 Tested Date: 2017—05—31 to 2017—06—02 Issued Date: 2018—05—03 Tested By: Neil Wong / Engineer M{/ W% Reviewed By: Silin Chen / EMC Manager g}’[m {:fig’{v Approved & Authorized By: Jandy So / PSQ Manager MW Prepared By: Shenzhen SEM Test Technology Co., Ltd. 1/F, Building A, Hongwei Industrial Park, Liuxian 2nd Road, Bao‘an District, Shenzhen, P.R.C. (518101) Tel.: +86—755—33663308 Fax.: +86—755—33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. Part of the test data is cited the early report, Report Numbers is STR170584111. It may not be duplicated without prior permitted by Shenzhen SEM Test Technology Co., Ltd. Report No.: STR180580081I Page 1 of 25 FCC Part 15.249

Model: KS4 TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................3 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ...............................................................................3 1.2 TEST STANDARDS...................................................................................................................................................4 1.3 TEST METHODOLOGY .............................................................................................................................................4 1.4 TEST FACILITY .......................................................................................................................................................4 1.5 EUT SETUP AND TEST MODE .................................................................................................................................5 1.6 MEASUREMENT UNCERTAINTY ..............................................................................................................................5 1.7 TEST EQUIPMENT LIST AND DETAILS .....................................................................................................................6 2. SUMMARY OF TEST RESULTS ...........................................................................................................................7 3. ANTENNA REQUIREMENTS ................................................................................................................................8 3.1 STANDARD APPLICABLE.........................................................................................................................................8 3.2 TEST RESULT..........................................................................................................................................................8 4. RADIATED EMISSIONS .........................................................................................................................................9 4.1 STANDARD APPLICABLE.........................................................................................................................................9 4.2 TEST PROCEDURE ...................................................................................................................................................9 4.3 CORRECTED AMPLITUDE & MARGIN CALCULATION ............................................................................................11 4.4 ENVIRONMENTAL CONDITIONS ............................................................................................................................11 4.5 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................11 5. OUT OF BAND EMISSIONS .................................................................................................................................20 5.1 STANDARD APPLICABLE.......................................................................................................................................20 5.2 TEST PROCEDURE .................................................................................................................................................20 5.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................20 5.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................20 6. EMISSION BANDWIDTH .....................................................................................................................................23 6.1 STANDARD APPLICABLE.......................................................................................................................................23 6.2 TEST PROCEDURE .................................................................................................................................................23 6.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................23 6.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................23 Report No.: STR18058008I Page 2 of 25 FCC Part 15.249

Model: KS4 1. GENERAL INFORMATION 1.1 Product Description for Equipment Under Test (EUT) Client Information Applicant: Acrox Technologies Co., Ltd. Address of applicant: 4F., No.89, Minshan St., Neihu Dist.,Taipei City 114, Taiwan, R.O.C Manufacturer: Acrox Technologies Co., Ltd Address of manufacturer: Hsinmin Industria,Changan Town,Dongguan City, Guangdong,China General Description of EUT Product Name: Wireless Keyboard Trade Name: ACROX/Blackweb Model No.: KS4 Adding Model(s): BWC17HO004, BWC17HO005, BWC17HO006 Rated Voltage: DC 3V by 2 AAA battery Power Adapter Model: / Note: The test data is gathered from a production sample, provided by the manufacturer. The appearance of others models listed in the report is different from main-test model KS4, but the circuit and the electronic construction do not change, declared by the manufacturer. Technical Characteristics of EUT Frequency Range: 2408-2474MHz Max. Field Strength: 83.60dBuV/m (3m) Data Rate: / Modulation: FSK Antenna Type: PCB Antenna Antenna Gain: -5dBi Lowest Internal Frequency of EUT: 12MHz Report No.: STR18058008I Page 3 of 25 FCC Part 15.249

Model: KS4 1.2 Test Standards The following report is prepared on behalf of the Acrox Technologies Co., Ltd. in accordance with FCC Part 15, Subpart B, Subpart C, and section 15.107, 15.203, 15.205, 15.207, 15.209 and 15.249 of the Federal Communication Commissions rules. The objective is to determine compliance with FCC Part 15, Subpart C, and section 15.107,15.203, 15.205, 15.207, 15.209 and 15.249 of the Federal Communication Commissions rules. Maintenance of compliance is the responsibility of the manufacturer. Any modification of the product, which results in lowering the emission, should be checked to ensure compliance has been maintained. 1.3 Test Methodology All measurements contained in this report were conducted with ANSI C63.10-2013, American National Standard for Testing Unlicensed Wireless Devices, and ANSI C63.4-2014, American National Standard for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the range of 9 kHz to 40 GHz. 1.4 Test Facility FCC – Registration No.: 125990 Shenzhen SEM Test Technology Co., Ltd. Laboratory has been recognized to perform compliance testing on equipment subject to the Commissions Declaration Of Conformity (DOC). The Designation Number is CN5010, and Test Firm Registration Number is 125990. Industry Canada (IC) Registration No.: 11464A The 3m Semi-anechoic chamber of Shenzhen SEM.Test Technology Co., Ltd. has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing with Registration No.: 11464A. Report No.: STR18058008I Page 4 of 25 FCC Part 15.249

I#] TEST Model: KS4 1.5 EUT Setup and Test Mode The EUT was operated in the engineering mode to fix the Tx frequency that was for the purpose of the measurements. All testing shall be performed under maximum output power condition, and to measure its highest possible emissions level, more detailed description as follows: Test Mode List Test Mode Description Remark TM1 Low Channel 2408MHz TM2 Middle Channel 2440MHz TM3 High Channel 2474MHz Special Cable List and Details Cable Description Length (m) Shielded/Unshielded With / Without Ferrite / / / / Auxiliary Equipment List and Details Description Manufacturer Model Serial Number / / / / 1.6 Measurement Uncertainty Measurement uncertainty Parameter Conditions Uncertainty RF Output Power Conducted +0.42dB Occupied Bandwidth Conducted +1.5% Conducted Spurious Emission Conducted +2.170B 2oL 9—150kHz +3.74dB Conducted Emissions Conducted 0.15—30MHz +3.34dB 30—200MHz +4.52dB . . h . 0.2—1GHz +5.56dB Transmitter Spurious Emissions Radiated 1—6GHz +3.84dB 6—18GHz +3.92dB Report No.: STR180580081I Page 5 of 25 FCC Part 15.249

Model: KS4 1.7 Test Equipment List and Details No. Description Manufacturer Model Serial No. Cal Date Due Date SEMT-1072 Spectrum Analyzer Agilent E4407B MY41440400 2017-06-12 2018-06-11 SEMT-1031 Spectrum Analyzer Rohde & Schwarz FSP30 836079/035 2017-06-12 2018-06-11 SEMT-1007 EMI Test Receiver Rohde & Schwarz ESVB 825471/005 2017-06-12 2018-06-11 SEMT-1008 Amplifier Agilent 8447F 3113A06717 2017-06-12 2018-06-11 SEMT-1043 Amplifier C&D PAP-1G18 2002 2017-06-12 2018-06-11 SEMT-1011 Broadband Antenna Schwarz beck VULB9163 9163-333 2017-06-08 2020-06-07 SEMT-1042 Horn Antenna ETS 3117 00086197 2017-06-08 2020-06-07 SEMT-1121 Horn Antenna Schwarzbeck BBHA 9170 BBHA9170582 2017-06-08 2020-06-07 SEMT-1069 Loop Antenna Schwarz beck FMZB 1516 9773 2017-06-08 2020-06-07 SEMT-1001 EMI Test Receiver Rohde & Schwarz ESPI 101611 2017-06-12 2018-06-11 SEMT-1003 L.I.S.N Schwarz beck NSLK8126 8126-224 2017-06-12 2018-06-11 SEMT-1002 Pulse Limiter Rohde & Schwarz ESH3-Z2 100911 2017-06-12 2018-06-11 Direction Systems SEMT-1168 Pre-amplifier PAP-0126 14141-12838 2017-08-15 2018-08-14 Inc. Direction Systems SEMT-1169 Pre-amplifier PAP-2640 14145-14153 2017-08-15 2018-08-14 Inc. SEMT-1163 Spectrum Analyzer Rohde & Schwarz FSP40 100612 2017-06-12 2018-06-11 SEMT-1170 DRG Horn Antenna A.H. SYSTEMS SAS-574 571 2018-03-19 2021-03-18 Report No.: STR18058008I Page 6 of 25 FCC Part 15.249

I#] TEST Model: KS4 2. SUMMARY OF TEST RESULTS FCC Rules Description of Test Item Result §$15.203 Antenna Requirement Compliant §15.205 Restricted Band of Operation Compliant § 15.207(a) Conducted Emission N/A §15.209(a)(F) Radiated Spurious Emissions Compliant §15.249(a) Field Strength of Emissions Compliant §15.249(d) Out of Band Emission Compliant §15.215 (c) Emission Bandwidth Compliant Report No.: STR180580081I Page 7 of 25 FCC Part 15.249

Model: KS4 3. Antenna Requirements 3.1 Standard Applicable According to FCC Part 15.203, 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. 3.2 Test Result This product has an integral antenna, fulfill the requirement of this section. Report No.: STR18058008I Page 8 of 25 FCC Part 15.249

Model: KS4 4. Radiated Emissions 4.1 Standard Applicable According to §15.249(a), the field strength of emissions from intentional radiators operated within these frequency bands shall comply with the following: Fundamental Frequency Field strength of fundamental Field strength of Harmonics (milli-volts/meter) (micro-volts/meter) 902-928 MHz 50 500 2400-2483.5 MHz 50 500 5725-5875 MHz 50 500 24.0-24.25 GHz 250 2500 (d) Emissions radiated outside of the specified frequency bands, except for harmonics, shall be attenuated by at least 50 dB below the level of the fundamental or to the general radiated emission limits in §15.209, whichever is the lesser attenuation. The emission limit in this paragraph is based on measurement instrumentation employing an average detector. The provisions in §15.35 for limiting peak emissions apply. Spurious Radiated Emissions measurements starting below or at the lowest crystal frequency. 4.2 Test Procedure The setup of EUT is according with per ANSI C63.10-2013 measurement procedure. The specification used was with the FCC Part 15.205 15.249(a) and FCC Part 15.209 Limit. The external I/O cables were draped along the test table and formed a bundle 30 to 40 cm long in the middle. The spacing between the peripherals was 10 cm. Report No.: STR18058008I Page 9 of 25 FCC Part 15.249

Model: KS4 Antenna Tower 1m-4m 3m EUT SYS 1.5m Turntable Table To EMI Receiver Ground Plane Frequency :9kHz-30MHz Frequency :30MHz-1GHz Frequency :Above 1GHz RBW=10KHz, RBW=120KHz, RBW=1MHz, VBW =30KHz VBW=300KHz VBW=3MHz(Peak), 10Hz(AV) Sweep time= Auto Sweep time= Auto Sweep time= Auto Trace = max hold Trace = max hold Trace = max hold Detector function = peak Detector function = peak, QP Detector function = peak, AV Report No.: STR18058008I Page 10 of 25 FCC Part 15.249

Model: KS4 4.3 Corrected Amplitude & Margin Calculation The Corrected Amplitude is calculated by adding the Antenna Factor and the Cable Factor, and subtracting the Amplifier Gain from the Amplitude reading. The basic equation is as follows: Corr. Ampl. = Indicated Reading + Ant. Factor + Cable Loss – Ampl. Gain The “Margin” column of the following data tables indicates the degree of compliance with the applicable limit. For example, a margin of -6dBV means the emission is 6dBV below the maximum limit. The equation for margin calculation is as follows: Margin = Corr. Ampl. – FCC Part 15C Limit 4.4 Environmental Conditions Temperature: 24 C Relative Humidity: 60  ATM Pressure: 1012 mbar 4.5 Summary of Test Results/Plots According to the data below, the FCC Part 15.205, 15.209 and 15.249 standards, and had the worst margin of: -6.33 dB at 47.9940 MHz in the Vertical polarization, Low Channel, 9 kHz to 25 GHz, 3Meters Note: this EUT was tested in 3 orthogonal positions and the worst case position data was reported. Report No.: STR18058008I Page 11 of 25 FCC Part 15.249

Model: KS4 Plot of Radiated Emissions Test Data (30MHz to 1GHz) EUT: Wireless Keyboard Tested Model: KS4 Operating Condition: Transmitting Low Channel (2408MHz) Comment: DC 3V Test Specification: Horizontal No. Frequency Reading Correct Result Limit Margin Degree Height Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) (* ) (cm) 1 39.5757 22.24 4.87 27.11 40.00 -12.89 72 100 peak 2 47.4918 23.85 4.96 28.81 40.00 -11.19 164 100 peak 3 55.2207 22.46 5.02 27.48 40.00 -12.52 99 100 peak 4 108.2667 14.67 4.88 19.55 43.50 -23.95 122 100 peak 5 336.0352 16.17 11.48 27.65 46.00 -18.35 238 100 peak 6 721.7259 15.57 17.91 33.48 46.00 -12.52 136 100 peak Report No.: STR18058008I Page 12 of 25 FCC Part 15.249

Model: KS4 Test Specification: Vertical No. Frequency Reading Correct Result Limit Margin Degree Height Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) (* ) (cm) 1 39.7147 24.53 4.89 29.42 40.00 -10.58 194 100 peak 2 47.9940 28.71 4.96 33.67 40.00 -6.33 99 100 peak 3 55.2207 23.14 5.02 28.16 40.00 -11.84 135 100 peak 4 114.1138 15.27 4.85 20.12 43.50 -23.38 94 100 peak 5 293.0842 15.23 11.69 26.92 46.00 -19.08 153 100 peak 6 714.1734 15.98 17.63 33.61 46.00 -12.39 181 100 peak Report No.: STR18058008I Page 13 of 25 FCC Part 15.249

Model: KS4 Operating Condition: Transmitting Middle Channel (2440MHz) Comment: DC 3V Test Specification: Horizontal No. Frequency Reading Correct Result Limit Margin Degree Height Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) (* ) (cm) 1 39.5757 24.06 4.87 28.93 40.00 -11.07 256 100 peak 2 46.8303 22.97 4.96 27.93 40.00 -12.07 100 100 peak 3 55.2207 22.84 5.02 27.86 40.00 -12.14 95 100 peak 4 226.0994 15.87 8.05 23.92 46.00 -22.08 309 100 peak 5 383.9318 15.11 11.97 27.08 46.00 -18.92 160 100 peak 6 750.1083 15.55 18.58 34.13 46.00 -11.87 298 100 peak Report No.: STR18058008I Page 14 of 25 FCC Part 15.249

Model: KS4 Test Specification: Vertical No. Frequency Reading Correct Result Limit Margin Degree Height Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) (* ) (cm) 1 39.7147 22.58 4.89 27.47 40.00 -12.53 61 100 peak 2 55.2207 23.01 5.02 28.03 40.00 -11.97 231 100 peak 3 118.6014 16.17 4.82 20.99 43.50 -22.51 81 100 peak 4 285.9778 15.19 11.39 26.58 46.00 -19.42 261 100 peak 5 387.9920 16.16 12.14 28.30 46.00 -17.70 181 100 peak 6 633.9073 15.91 17.86 33.77 46.00 -12.23 208 100 peak Report No.: STR18058008I Page 15 of 25 FCC Part 15.249

Model: KS4 Operating Condition: Transmitting High Channel (2474MHz) Comment: DC 3V Test Specification: Horizontal No. Frequency Reading Correct Result Limit Margin Degree Height Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) (* ) (cm) 1 36.0007 20.97 4.33 25.30 40.00 -14.70 268 100 peak 2 47.9940 22.91 4.96 27.87 40.00 -12.13 92 100 peak 3 55.2207 22.30 5.02 27.32 40.00 -12.68 165 100 peak 4 107.8877 15.74 4.88 20.62 43.50 -22.88 100 100 peak 5 316.5890 15.47 11.96 27.43 46.00 -18.57 193 100 peak 6 392.0951 15.69 12.33 28.02 46.00 -17.98 258 100 peak Report No.: STR18058008I Page 16 of 25 FCC Part 15.249

Model: KS4 Test Specification: Vertical No. Frequency Reading Correct Result Limit Margin Degree Height Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) (* ) (cm) 1 39.4372 23.27 4.85 28.12 40.00 -11.88 323 100 peak 2 46.9948 21.07 4.96 26.03 40.00 -13.97 97 100 peak 3 55.2207 22.07 5.02 27.09 40.00 -12.91 82 100 peak 4 105.2718 14.88 4.89 19.77 43.50 -23.73 116 100 peak 5 355.4273 15.21 11.78 26.99 46.00 -19.01 109 100 peak 6 771.4486 15.70 17.39 33.09 46.00 -12.91 316 100 peak Report No.: STR18058008I Page 17 of 25 FCC Part 15.249

Model: KS4 Spurious Emissions Above 1GHz Frequency Reading Correct Result Limit Margin Polar Detector (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) H/V Low Channel-2408MHz 2408 84.76 -4.44 80.32 114 -33.68 H PK 2408 85.04 -4.44 80.60 94 -13.40 H AV 4816 49.42 -0.96 48.46 74 -25.54 H PK 4816 38.34 -0.96 37.38 54 -16.62 H AV 7224 45.85 1.34 47.19 74 -26.81 H PK 7224 33.94 1.34 35.28 54 -18.72 H AV 2408 88.05 -4.45 83.60 114 -30.40 V PK 2408 86.08 -4.44 81.64 94 -12.36 V AV 4816 47.82 -0.96 46.86 74 -27.14 V PK 4816 36.47 -0.96 35.51 54 -18.49 V AV 7224 45.83 1.34 47.17 74 -26.83 V PK 7224 33.59 1.34 34.93 54 -19.07 V AV Middle Channel-2440MHz 2440 85.16 -4.42 80.74 114 -33.26 H PK 2440 84.82 -4.42 80.40 94 -13.60 H AV 4880 50.02 -0.78 49.24 74 -24.76 H PK 4880 36.92 -0.78 36.14 54 -17.86 H AV 7320 45.01 1.39 46.40 74 -27.60 H PK 7320 34.08 1.39 35.47 54 -18.53 H AV 2440 85.19 -4.42 80.77 114 -33.23 V PK 2440 84.48 -4.42 80.06 94 -13.94 V AV 4880 49.84 -0.78 49.06 74 -24.94 V PK 4880 36.93 -0.78 36.15 54 -17.85 V AV 7320 44.28 1.34 45.62 74 -28.38 V PK 7320 34.37 1.34 35.71 54 -18.29 V AV Report No.: STR18058008I Page 18 of 25 FCC Part 15.249

Model: KS4 Frequency Reading Correct Result Limit Margin Polar Detector (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) H/V Low Channel-2474MHz 2474 84.83 -4.37 80.46 114 -33.54 H PK 2474 83.92 -4.37 79.55 94 -14.45 H AV 4948 48.90 -0.62 48.28 74 -25.72 H PK 4948 36.90 -0.62 36.28 54 -17.72 H AV 7422 45.16 1.44 46.60 74 -27.40 H PK 7422 32.65 1.44 34.09 54 -19.91 H AV 2474 84.24 -4.37 79.87 114 -34.13 V PK 2474 83.70 -4.37 79.33 94 -14.67 V AV 4948 49.35 -0.62 48.73 74 -25.27 V PK 4948 38.45 -0.62 37.83 54 -16.17 V AV 7422 43.73 1.44 45.17 74 -28.83 V PK 7422 33.96 1.44 35.40 54 -18.60 V AV Note: Testing is carried out with frequency rang 9kHz to the tenth harmonics, which above 5th Harmonics are attenuated more than 20dB below the permissible limits or the field strength is too small to be measured. The measurements greater than 20dB below the limit from 9kHz to 30MHz.. Report No.: STR18058008I Page 19 of 25 FCC Part 15.249

Model: KS4 5. Out of Band Emissions 5.1 Standard Applicable Emissions radiated outside of the specified frequency bands, except for harmonics, shall be attenuated by at least 50 dB below the level of the fundamental or to the general radiated emission limits in §15.209, whichever is the lesser attenuation. 5.2 Test Procedure As the radiation test, set the Lowest and Highest Transmitting Channel, observed the outside band of 2400MHz to 2483.5MHz, than mark the higher-level emission for comparing with the FCC rules. 5.3 Environmental Conditions Temperature: 24 C Relative Humidity: 60  ATM Pressure: 1012 mbar 5.4 Summary of Test Results/Plots Frequency Limit Test mode Result MHz dBuV / dBc 2310.00 <54 dBuV Pass Lowest 2390.00 <54 dBuV Pass 2400.00 <54 dBuV Pass 2483.50 <54 dBuV Pass Highest 2500.00 <54 dBuV Pass The edge emissions are below the FCC 15.209 Limits or complies with the 15.249 requirements. Please refer to the test plots as below. Report No.: STR18058008I Page 20 of 25 FCC Part 15.249

I#] TEST Model: KS4 Lowest Bandedge Vertical (Worst case) 107.0 dBu¥/m Limit] —— V $ ooo cce ccoccocecccceececceeecccecccceccecccceccec cce ce cce ce cecccc ce cce ce cce cce cce ce cce cce cce cce cce cce c cce cce cesc es e cce ces B¥ Lecoccccccccscscscscsseeeeeeeeeeeeeeeeceeeeeecececececececececececececececececececececececececesesesesesesssssssssssscscecccs 77 6F 57 47 37 27 TZ kL—e—oeoeeesecececececesecececeeceececececececece cesc cce ce ce ce ce ce ce ce ce ce ce ce ce ce ce ce ces cec cce ee e ce ce ce ce ce ce ces e ce ce ce ce ce ce ce ce > 7.0 2300.000 2415.0 MHz No. Frequency Reading Correct Result Limit Margin Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) 1 2310.00 34.84 —3.35 31.49 54.00 —22.51 Average Detector 2310.00 45.65 —3.35 42.30 74.00 —31.70 Peak Detector 2 2390.00 34.66 —4.29 30.37 54.00 —23.63 Average Detector 2390.00 47.59 —4.29 43.30 74.00 —30.70 Peak Detector 3 2395.64 40.34 —4.35 35.99 54.00 —18.01 Average Detector 2396.10 56.31 —4.35 51.96 74.00 —22.04 Peak Detector 4 2400.000 37.38 —4.40 32.98 54.00 —21.02 Average Detector 2400.000 51.66 —4. 40 47.26 74.00 —26.74 Peak Detector Report No.: STR180580081I Page 21 of 25 FCC Part 15.249

I#] TEST Model: KS4 Highest Bandedge Vertical (Worst case) 107.0 dBu¥/m Limit] —— V $ ooo cce ccoccocecccceececceeecccecccceccecccceccec cce ce cce ce cecccc ce cce ce cce cce cce ce cce cce cce cce cce cce c cce cce cesc es e cce ces 87 77 6F 57 47 37 27 TZ kL—e—oeoeeesecececececesecececeeceececececececece cesc cce ce ce ce ce ce ce ce ce ce ce ce ce ce ce ce ces cec cce ee e ce ce ce ce ce ce ces e ce ce ce ce ce ce ce ce > 7.0 2470.000 2510.0 MHz No. Frequency Reading Correct Result Limit Margin Remark (MHz) (dBuV/m) dB/m (dBuV/m) (dBuV/m) (dB) 1 2474.05 85.94 —4.36 81.58 / / Average Detector 2473.49 88.20 —4.36 83.84 / / Peak Detector 2 2483.50 38.59 —4.36 34.23 54.00 —19.77 Average Detector 2483.50 49.13 —4.36 44.77 74.00 —29.23 Peak Detector 3 2487.40 40.47 —4.35 36.12 54.00 —17.88 Average Detector 2484.33 50.77 —4.36 46.41 74.00 —27.59 Peak Detector 4 2500.00 36.99 —4 .34 32.65 54.00 —21.35 Average Detector 2500.00 47.14 —4.34 42.80 74.00 —31.20 Peak Detector Report No.: STR180580081I Page 22 of 25 FCC Part 15.249

Model: KS4 6. Emission Bandwidth 6.1 Standard Applicable According to 15.215 (c), intentional radiators operating under the alternative provisions to the general emission limits, as contained in §§15.217 through 15.257 and in Subpart E of this part, must be designed to ensure that the 20 dB bandwidth of the emission, or whatever bandwidth may otherwise be specified in the specific rule section under which the equipment operates, is contained within the frequency band designated in the rule section under which the equipment is operated. The requirement to contain the designated bandwidth of the emission within the specified frequency band includes the effects from frequency sweeping, frequency hopping and other modulation techniques that may be employed as well as the frequency stability of the transmitter over expected variations in temperature and supply voltage. If a frequency stability is not specified in the regulations, it is recommended that the fundamental emission be kept within at least the central 80% of the permitted band in order to minimize the possibility of out-of-band operation. 6.2 Test Procedure According to the ANSI 63.10-2013, the emission bandwidth test method as follows. Remove the antenna from the EUT and then connect a low loss RF cable from the antenna port to the spectrum analyzer. Set span = 1MHz, centered on a transmitting channel RBW 1% 20dB Bandwidth, VBW RBW Sweep = auto Detector function = peak Trace = max hold All the trace to stabilize, use the marker-to-peak function to set the marker to the peak of the emission, use the marker-delta function to measure and record the 20dB down and 99% bandwidth of the emission. 6.3 Environmental Conditions Temperature: 25 C Relative Humidity: 53 ATM Pressure: 1018 mbar 6.4 Summary of Test Results/Plots Frequency 20dB Bandwidth 99% Bandwidth Channel MHz kHz kHz Low Channel 2408 2072 2057.4 Middle Channel 2440 2069 2056.8 High Channel 2474 2070 2055.5 Please refer to the following test plots Report No.: STR18058008I Page 23 of 25 FCC Part 15.249

Model: KS4 Low Channel: Middle Channel: Report No.: STR18058008I Page 24 of 25 FCC Part 15.249

Model: KS4 High Channel: ***** END OF REPORT ***** Report No.: STR18058008I Page 25 of 25 FCC Part 15.249


Document Created: 2018-05-11 17:55:50
Document Modified: 2018-05-11 17:55:50
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