MPE Calculation

FCC ID: P27P208

RF Exposure Info

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FCCID_3967405

RF Exposure Report Report No.: SA180607D01 FCC ID: P27P208 Test Model: P208-TP Received Date: Jun. 7, 2018 Test Date: Jul. 4 ~ 25, 2018 Issued Date: Jul. 30, 2018 Applicant: Sercomm Corp. Address: 8F, No. 3-1, YuanQu St., NanKang, Taipei 115, Taiwan, R.O.C. (NanKang Software Park) Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan (R.O.C.) FCC Registration / Designation Number: 198487 / TW2021 This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies. Report No.: SA180607D01 Page No. 1 / 6 Report Format Version: 6.1.1

Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity...................................................................................................................... 4 2 RF Exposure .......................................................................................................................................... 5 2.1 Limits For Maximum Permissible Exposure (MPE)............................................................................. 5 2.2 MPE Calculation Formula ................................................................................................................... 5 2.3 Classification ....................................................................................................................................... 5 2.4 Calculation Result Of Maximum Conducted Power ............................................................................ 6 Report No.: SA180607D01 Page No. 2 / 6 Report Format Version: 6.1.1

Release Control Record Issue No. Description Date Issued SA180607D01 Original release. Jul. 30, 2018 Report No.: SA180607D01 Page No. 3 / 6 Report Format Version: 6.1.1

1 Certificate of Conformity Product: CBRS Outdoor Small Cell Brand: Sercomm Test Model: P208-TP Sample Status: Engineering sample Applicant: Sercomm Corp. Test Date: Jul. 4 ~ 25, 2018 Standards: FCC Part 2 (Section 2.1091) KDB 447498 D01 General RF Exposure Guidance v06 IEEE C95.1-1992 The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s RF characteristics under the conditions specified in this report. Prepared by : , Date: Jul. 30, 2018 Celia Chen / Supervisor Approved by : , Date: Jul. 30, 2018 Rex Lai / Associate Technical Manager Report No.: SA180607D01 Page No. 4 / 6 Report Format Version: 6.1.1

2 RF Exposure 2.1 Limits For Maximum Permissible Exposure (MPE) Frequency Range Electric Field Magnetic Field Power Density Average Time (MHz) Strength (V/m) Strength (A/m) (mW/cm2) (minutes) Limits For General Population / Uncontrolled Exposure 0.3-1.34 614 1.63 (100)* 30 2 1.34-30 824/f 2.19/f (180/f )* 30 30-300 27.5 0.073 0.2 30 300-1500 … … f/1500 30 1500-100,000 … … 1.0 30 f = Frequency in MHz ; *Plane-wave equivalent power density 2.2 MPE Calculation Formula Pd = (Pout*G) / (4*pi*r2) where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm 2.3 Classification The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. So, this device is classified as Mobile Device. Report No.: SA180607D01 Page No. 5 / 6 Report Format Version: 6.1.1

2.4 Calculation Result Of Maximum Conducted Power Frequency Band Max Power Antenna Gain Distance Power Density Limit Function (MHz) (dBm) (dBi) (cm) (mW/cm2) (mW/cm2) BT LE 2402 ~ 2480 -1.11 2.9 20 0.0003 1 Frequency Band Max Power Antenna Gain Distance Power Density Limit (MHz) (dBm) (dBi) (cm) (mW/cm2) (mW/cm2) CBRS band: 3552.5 ~ 3697.5 25.12 10.63 20 0.7477 1 Note: Directional gain = 7.62dBi + 10log(2) = 10.63dBi Conclusion: The formula of calculated the MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density BT LE (2402 ~ 2480 MHz) + CBRS band (3552.5 ~ 3697.5 MHz) = 0.0003 + 0.7477 = 0.7480 Therefore the maximum calculations of above situations are less than the “1” limit. --- END --- Report No.: SA180607D01 Page No. 6 / 6 Report Format Version: 6.1.1


Document Created: 2018-08-09 15:35:13
Document Modified: 2018-08-09 15:35:13
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