RF EXPOSURE

FCC ID: MSQWL520G

RF Exposure Info

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FCCID_523215

Measurement of Maximum Permissible Exposure ---------------------------------------- 1/3 Measurement of Maximum Permissible Exposure 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 FCC ID : MSQWL520G Product name : 125 High Speed Wireless Router Model : WL-520G 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 Frequency Range : 2.412 GHz ~ 2.462GHz Supported Channel : 11 Channels Modulation Skill : DBPSK, DQPSK, CCK, OFDM Power Type : Powered by the AC-DC adapter, Model: DV-0980S-B20 I/P: 120VAC, 60Hz, 14W O/P: 9VDC, 800mA 190cm length, non-shielded, no ferrite core Applicant: ASUSTeK Computer Inc. FCC ID: MSQWL520G Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Measurement of Maximum Permissible Exposure ---------------------------------------- 2/3 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 2 3.0-30 1842/f 4.89/f 900/f 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 177.42 × 1.58 Friis Transmission Formula: S = = = 0.05594mW / cm 2 4πR 2 4π ( 20) 2 PG 177.42 × 1.58 Estimated safe separation: R = = = 4.73038cm 4π 4π Remarks: "The safe estimated separation that the user must maintain from the antenna is at least 4.73cm" 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 (2.0 / 10) = 1.58489 Applicant: ASUSTeK Computer Inc. FCC ID: MSQWL520G Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

Measurement of Maximum Permissible Exposure ---------------------------------------- 3/3 Appendix Antenna Specification Applicant: ASUSTeK Computer Inc. FCC ID: MSQWL520G Training Research Co., Ltd., TEL: 886-2-26935155, Fax: 886-2-26934440

ASUS Antenna 2.4G + R-SMA IQ-040481 040049

JOINSOON ELECTRONICS MFG. CO., LTD. QUICK REFERENCE DATA Antenna Dimension Φ9.3*82.5 mm Connector R-SMA Peak Gain ≦2.0 dBi VSWR 2.0 Polarization Linear Impedance 50Ω Operating Temperature -20~65 ℃ Maximum Power 1W 1

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4. 電氣的性能 Electrical Properties 項目 ITEM 測試條件 TEST CONDITION 規格 SPECIFICATION 4.1 駐波比 放置在任何空間進行檢測。 2.0 以下 2.0 Max. VSWR (VSWR & Return Loss 的檢測方式參考次頁明細圖） (2.4 GHz ~ 2.5 GHz) 4.2 反射損失 To detect on any space. -10 dB 以下 -10 dB Max. Return Loss (VSWR & Return Loss testing to read next figure for (2.4 GHz ~ 2.5 GHz) 4.3 特徵阻抗 ref.) 50O Impedance 4.4 指向性 Certain direction 4.5 最大增益 -5~3 dBi 以上（絕對增益） Max GAIN -5~3 dBi Min. 5. 耐氣候性 Environmental Performance 項目 ITEM 測試條件 TEST CONDITION 規格 SPECIFICATION 5.1 耐熱性 放置在溫度 60 ±2℃ 中，96 小時後在正常溫濕度下放 外觀、構造無異常 Temperature Life 置 1 小時進行檢測。 機械性能無異常 To put antenna at 60±2℃ within 96 hrs then take it out 符合電氣性能（4.1& 4.2 項） to put at normal environment within 1 hour later to No abnormal of appearance, detect. construction, mechanical. 5.2 耐寒性 放置在 -10 ± 2℃ 中，96 小時以後，再置於正常溫濕度 Meet electrical request( Item 4.1& 4.2) Cold 1 小時進行檢測。 To keep in -10± 2℃ within 96hrs and take out to put at normal environment within 1 hour later to detect. 5.3 耐溫性 放置在+40 ±2℃ ，相對濕度 90 ~ 95% 的狀態，96 小時 穩定狀態） 以後，再置於正常溫濕度 1 小時進行檢測。 To keep in +40±2℃ , damp =90~95% within 96 hrs and Humidity take it out to put at normal environment within 1 hour ( Stable ) later to detect. 5.4 熱沖擊測試 -20℃ ，+60℃ 的狀態各放置 1 小時視為 1 週期，測試 Thermal Shock 10 週期後，再放置於正常溫濕度 1 小時後進行檢測。 To put antenna at -20℃ & +60℃ and each degree for 1 hour as a cycle , totally need to repeat 10 cycles then put at normal environment within 1 hour later to detect. 4

(註）電氣性能項目的檢測機器 (Remarks) Testing equipments 檢測器(equipment)：Agilent Network Analyzer E8358A 5

JOINSOON ELECTRONICS MFG. CO., LTD. Test results 1. Return Loss Center Antenna freg. BW Return Loss @MHz @MHz 2.4GHz 2.45GHz 2.5GHz 2450 240 -19.14 -23.67 -14.97 6

JOINSOON ELECTRONICS MFG. CO., LTD. 2. VSWR Center BW VSWR Antenna freg. @MHz @MHz 2.4GHz 2.45GHz 2.5GHz 2450 240 1.246 1.141 1.432 7

JOINSOON ELECTRONICS MFG. CO., LTD. 3.Smith Chart 8

JOINSOON ELECTRONICS MFG. CO., LTD. Free Space 天線輻射場形： 1. Radiation Pattern of H Plane 9

JOINSOON ELECTRONICS MFG. CO., LTD. 2. Radiation Pattern of V Plane 10


Document Created: 2005-03-11 14:26:41
Document Modified: 2005-03-11 14:26:41
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