MPE report rev1

FCC ID: RRK-E2F

RF Exposure Info

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FCCID_1676475

RF EXPOSURE REPORT REPORT NO.: SA120210E05 R1 MODEL NO.: E2F FCC ID: RRK-E2F RECEIVED: Feb. 10, 2012 TESTED: Feb. 16, 2012 ISSUED: Apr. 13, 2012 APPLICANT: Alpha Networks Inc. ADDRESS: No.8 Li-shing 7th Rd., Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. ISSUED BY: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory LAB ADDRESS: No. 81-1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan, R.O.C. This test report consists of 9 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced, except in full, without the written approval of our laboratory. The client should not use it to claim product certification, approval or endorsement by any government agency. The test results in the report only apply to the tested sample. Report No.: SA120210E05 R1 1 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

TABLE OF CONTENTS RELEASE CONTROL RECORD .................................................................................... 3 1. CERTIFICATION...................................................................................................... 4 2. RF EXPOSURE LIMIT.............................................................................................. 5 3. MPE CALCULATION FORMULA ............................................................................. 5 4. CLASSIFICATION .................................................................................................... 5 5. ANTENNA GAIN....................................................................................................... 6 6. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER........................... 7 Report No.: SA120210E05 R1 2 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

RELEASE CONTROL RECORD ISSUE NO. REASON FOR CHANGE DATE ISSUED SA120210E05 Original release Apr. 10, 2012 SA120210E05 R1 Modified Antenna Connecter type of the EUT Apr. 13, 2012 Report No.: SA120210E05 R1 3 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

1. CERTIFICATION PRODUCT: MY NET N750 BRAND NAME: WD MODEL NO.: E2F TEST SAMPLE: MASS-PRODUCTION APPLICANT: Alpha Networks Inc. TESTED: Feb. 16, 2012 STANDARDS: FCC Part 2 (Section 2.1091) FCC OET Bulletin 65, Supplement C (01-01) IEEE C95.1 The above equipment (Model: E2F) 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 EMC characteristics under the conditions specified in this report. PREPARED BY : , DATE: Apr. 13, 2012 (Elsie Hsu, Specialist ) APPROVED BY : , DATE: Apr. 13, 2012 (May Chen, Deputy Manager ) Report No.: SA120210E05 R1 4 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

2. RF EXPOSURE LIMIT LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) FREQUENCY ELECTRIC FIELD MAGNETIC FIELD POWER DENSITY AVERAGE TIME RANGE (MHz) STRENGTH (V/m) STRENGTH (A/m) (mW/cm2) (minutes) LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE 300-1500 … … F/1500 30 1500-100,000 … … 1.0 30 F = Frequency in MHz 3. 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 4. 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.: SA120210E05 R1 5 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

5. ANTENNA GAIN 6. The antennas provided to the EUT, please refer to the following table: For 2.4GHz Transmitter Peak Gain Antenna Connecter Brand Model Circuit (dBi) Type Type WHA YU C037-511171-A Chain (0) 3 PCB NA GROUP (SSR-14424) WHA YU C037-511170-A Chain (1) 3 PCB NA GROUP (SSR-2011130) For 5GHz Transmitter Peak Gain Antenna Connecter Brand Model Circuit (dBi) Type Type WHA YU C037-511158-A Chain (0) 5 PCB MHF GROUP (SSR-14469) WHA YU C037-511172-A Chain (1) 5 PCB MHF GROUP (SSR-2011133) WHA YU C037-511176-A Chain (2) 5 PCB MHF GROUP (SSR-14470) Report No.: SA120210E05 R1 6 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

7. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER For 15.247(2.4GHz): 802.11b: FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 2412-2462 191.8 6.01 20 0.152 1.00 Directional gain = gain of antenna element + 10 log (# of TX antenna elements) Effective Legacy Gain (dBi)=6.01 802.11g: FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 2412-2462 564.3 6.01 20 0.448 1.00 Directional gain = gain of antenna element + 10 log (# of TX antenna elements) Effective Legacy Gain (dBi)=6.01 802.11n(20MHz): FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) 2 (mW/cm2) (MHz) (dBi) (mW/ cm ) 2412-2462 806.8 3.00 20 0.320 1.00 802.11n(40MHz): FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 2422-2452 390.1 3.00 20 0.155 1.00 Report No.: SA120210E05 R1 7 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

For 15.247(5GHz): 802.11a: FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 5745 ~ 5825 291.3 9.77 20 0.550 1.00 Directional gain = gain of antenna element + 10 log (# of TX antenna elements) Effective Legacy Gain (dBi)=9.77 802.11n(20MHz): FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 5745 ~ 5825 563.1 5.00 20 0.354 1.00 802.11n(40MHz): FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 5755 ~ 5795 571.9 5.00 20 0.360 1.00 Report No.: SA120210E05 R1 8 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201

For 15.407(5GHz): 802.11a: FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 5180 ~ 5240 20.6 9.77 20 0.039 1.00 Directional gain = gain of antenna element + 10 log (# of TX antenna elements) Effective Legacy Gain (dBi)=9.77 802.11n(20MHz): FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 5180 ~ 5240 45.1 5.00 20 0.028 1.00 802.11n(40MHz): FREQUENCY ANTENNA POWER MAX POWER DISTANCE LIMIT BAND GAIN DENSITY (mW) (cm) (mW/cm2) (MHz) (dBi) (mW/ cm2) 5190 ~ 5230 47.2 5.00 20 0.030 1.00 CONCLUSION: Both of the 2.4GHz and 5GHz can transmit simultaneously, the formula of calculated the MPE is: CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1 CPD = Calculation power density LPD = Limit of power density Therefore, the worst-case situation is 0.448 / 1 + 0.550 / 1 = 0.998, which is less than “1”. This confirmed that the device comply with FCC 1.1310 MPE limit. --- END --- Report No.: SA120210E05 R1 9 Report Format Version 4.0.0 Cancels and replaces the report No.: SA120210E05 dated Apr. 10, 201


Document Created: 2012-04-13 13:42:57
Document Modified: 2012-04-13 13:42:57
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