RF exposure info

FCC ID: PY3CG814WH

RF Exposure Info

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FCCID_313306

TRC Training Research Co., Ltd. ® 255 Nanyang Street, Shijr, Taipei Hsien 221, Taiwan, R.O.C. Since1985 TEL: 886-2-26935155 FAX: 886-2-26934440 Measurement of MPE 1. Foreword In adopt with the Human Exposure IEEE C95.1, and according to the FCC 1.1310. The Maximum Permissible Exposure (MPE) is obligated to measure in order to prove the safety of radiation harmfulness to the human body. The Gain of the antenna used is measured in an Anechoic chamber. The maximum total power to the antenna is to be recorded. By adopting the Friis Transmission Formula and the power gain of the antenna, we can find the distance right away from the product, where the limit of the MPE is. 2. Description of EUT EUT : Wireless Cable Modem Gateway Classification : Mobile Device (i)Under normal use condition, the antenna is at least 20cm away from the user; (ii) Warning statement for keeping 20cm separation distance and the prohibition of operating next to the person has been printed in the user’s manual Model No. : CG814WH Granted FCC ID : PY3CG814WH Frequency Range : 2.412 GHz ~ 2.462GHz Supported Channel: 11 Channel Modulation Skill : DBPSK, DQPSK, CCK Power Type : Powered by the PCMCIA slot of the client’s device Applicant : Netgear Inc. 4500 Great America Parkway, Santa Clara, CA 95054. (Remarks: The original MPE evaluation solely concerning about the PCMCIA radio card, with the FCC ID: PD5LMWP200, performed by the ADT is attached as a reference.)

TRC Training Research Co., Ltd. ® 255 Nanyang Street, Shijr, Taipei Hsien 221, Taiwan, R.O.C. Since1985 TEL: 886-2-26935155 FAX: 886-2-26934440 3. Limits for Maximum Permissible Exposure (MPE) Frequency Electric Field Magnetic Filed Power Density (S) Averaging Time Range Strength (V/m) Strength (H) (mW/cm2) |E|2, |H|2 or S (MHz) (A/m) (minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 100 6 3.0-30 1842/f 4.89/f 900/f2 6 30-300 61.4 0.163 1.0 6 300-1500 -- -- f/300 6 1500-100,000 -- -- 5 6 (B) 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 [The EUT is tested in transmit and receive modes and in the first, middle and the last channel separately. The following shows only our observation have the greatest emissions.] According to OET BULLETIN 56 Fourth Edition/August 1999, Equation for Predicting RF Fields: PG 30.76 × 0.79 Friis Transmission Formula: S= = = 4.834 × 10 −3 mW / cm 2 4πR 2 4π (20) 2 PG 30.76 × 0.79 Estimated safe separation: R= = = 1.391cm 4π 4π Remarks: "The safe estimated separation that the user must maintain from the antenna is at least 1.391 cm." Where: S = power density (in appropriate units, e.g. mW/cm2) P = power input to the antenna (in appropriate units, e.g., mW) G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) The Numeric gain G of antenna with a gain specified in dB is determined by: G = Log -1 (dB antenna gain/10) G = Log -1 (-1 / 10) = 0.79

FCC ID: PDSLMWP200 A ADT CorR. FCC TEST REPORT REPORT NO.: RF900809RO01 MODEL NO.: LM—WP200 (for DELTA) MA4O1 rev.B (for Netgear) ACCORDING: FCC Guidelines for Human Exposure IEEE C95.1 APPLICANT: DELTA NETWORKS, INC. ADDRESS: 8, }(on Jan West Road, Liutu Industrial Zone Keelung, Taiwan, R.O0.C. ISSUED BY: Advance Data Technology Corporation LAB LOCATION: 47 14th Lin, Chiapau Tsun, Linko, Taipei, Taiwan, R.O.C. [ wnviag Lab Code: 200102—0 L/ 0528 ADT No.: 900809RO1

FCC ID:; PDSLMWP200 ADT CoRR RF Exposure Measurement (Mobile Device) 1. Introduction 24 GHz frequency band is regarded specially as a dangerous band for its heating harmfulness to the human body. That‘s why microwave oven is operating in this frequency band. The manufacturer whose product is working in this frequency band is obligatory to prove the harmfulness of his product. In this document, we try to prove the safety of radiation harmfulness to the human body for our product. The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The Gain of the antenna used in this product is measured in a Fully Anechoic Chamber (FAC), and the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, _ we can calculate the distance, away from the product, where the limit of MPE is reached. 2. Classification The antenna of the product, under normal use condition, is at least 20 cm away from the body of the user. Warning statement for keeping 20 cm separation distance and the prohibition of operating next to a person has been printed on the users manual. So, this product is classified as the Mobile Device. 3. RF Exposure Limit According to FCC 1.1310; The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio—frequency (RF) radiation as specified in 1.1307(b). ADT No.: 900809RO1

FCC ID: PDSLMWP200 LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Freduency Electric Field Magnetic Field Power Density Average Time Range Strength (V/m) Strength (A/m) (mWi/cm") (minutes) (MHz) (A)Limits For Occupational / Control Exposures 30—300 61.4 0.163 1.0 6 300—1500 F/300 6 1500—100,000 5 6 (B)Limits For General Population / Uncontrolled Exposure 30—300 27.5 0.073 0.2 30 300—1500 F/1500 30 1500—100,000 1.0 30 F = Frequency in MHz 4. Friis Formula Friis transmission formula : Pd = (Pout*G) / (4*pi*r") where Pd = power density in mW/cm? 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 Pd is the limit of MPE, 1 mW/cm". If we know the maximum Gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Ref. : David K. Cheng, Field and Wave Electromagnetics, Second Edition, Page 640, Eq. (11—133). 5. EUT Operating condition The software provided by Manufacturer enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. ADT No.: 900809RO1

FCC ID: PDSLMWP200 A 6. Test Results 6.1 Antenna Gain The maximum Gain measured in Fully Anechoic Chamberis —1 dBi or 0.79 (numeric). 6.2 Output Power Into Antenna & RF Exposure Distance : mMiINimum CHANNEL ALLOWABLE ouTPuUT PowER DIsTtANCE(r) CHANNEL FRE(%LIJ_E;“CY To ANTENNA (mW)] FROM SKIN (Centi—Meter) 7 2412 68.87 208 6 2437 64.57 2.01 1 2467 66.07 2.04 The minimum allowable distance is very close to the enclosure of the antenna and is very far away from the human being under normal use condition. ADT No.: 900809RO1

FCC ID: PDSLMWP200 A FCC TEST REPORT REPORT NO.: RF200809RO1 MODEL NO.: LM—WP200 (for DELTA) MA4O1 rev.B (for Netgear) ACCORDING: FCC Guidelines for Human Exposure IEEE C95.1 APPLICANT: DELTA NETWORKS, INC. ADbrEss: 8, Kon Jan West Road, Liutu Industrial ZoneKeelung, Taiwan, R.O.C. ISSUED BY: Advance Data Technology Corporation LAB LOCATION: 47 14th Lin, Chiapau Tsun, Linko, Taipeli, Taiwan, R.O.C. 4n riving Lzb Code: 200102—0 / 0528 ADT No.: 900809RO1

FCC ID: PDSLMWP200 . ADT Corr RF Exposure Measurement (Mobile Device) 1. Introduction 2.4 GHz frequency band is regarded specially as a dangerous band for its heating harmfuiness to the human bddy. That‘s why microwave oven is operating in this frequency band. The manufacturer whose product is working in this frequency band is obligatory to prove the harmfulness of his product. In this document, we try to prove the safety of radiation harmfulness to the human body for our product. The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The Gain of the antenna used in this product is measured in a Fully Anechoic Chamber (FAC), and the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, _ we can calculate the distance, away from the product, where the limit of MPE is reached. 2. Classification The antenna of the product, under normal use condition, is at least 20 em away from the body of the user. Wamning statement for keeping 20 cm separation distance and the prohibition of operating next to a person has been printed on the users manual. So, this product is classified as the Mobile Device. 3. RF Exposure Limit According to FCC 1.1310; The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio—frequency (RF) radiation as specified in 1.1307(b). ADT No.: 900809RO1

FCC ID: PDSLMWP200 ADT CORR, LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE] Freéuency Electric Field Magnetic Field Power Density Average Time Range Strength (V/im) Strength {A/m) ({mWicm") {minutes) ~_(MHz) ' (A)Limits For Occupational / Control Exposures 30—300 _ 814 0.163 1.0 6 300—1500 F/300 6 1500—100,000 5 6 (B)Limits For General Population / Uncontrolled Exposure 30—300 27.5 0.073 0.2 30 300—1500 FA500 30 1500—100,000 1.0 30 F = Frequency in MHz 4. Friis Formula Friis transmission formula : Pd = (Pout*G) / (4*pi*r*) where Pd = power densi ty in mW/cm* 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 Pd is the limit of MPE, 1 mW/cm. If we know the maximum Gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Ref. : David K. Cheng, Field and Wave Electromagnetics, Second Edition, _ Page 640, Eq. (11—133). 5. EUT Operating condition The software provided by Manufacturer enabled the EUT to transmit and receive data at lowest, middle and highestchannel individually. ADT No.: $00809RO1

FCC ID: PDSLMWP200 A 6. Test Results 6.1 Antenna Gain The maximum Gain measured in Fully Anechoic Chamber is —1 dBi or 0.79 {numeric). 6.2 Output Power Into Antenna & RF Exposure Distance : T — Minimum CHANNELp . ALLOWABLE output power DistaANCE(r) CHANNEL FRE&%E;"CY TO ANTENNA (mW)] FROM SKIN ‘ (Centi—Meter) 7 2412 65.87 208 6 2437 64.57 2.01 i 2462 66.07 ~~~2.04 The minimum allowable distance is very close to the enclosure of the antenna and is very far away from the human being under normal use condition. ADT No.: 900809ROL


Document Created: 2002-12-31 20:58:06
Document Modified: 2002-12-31 20:58:06
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