RF Exposure Info

FCC ID: I4L-MS6834

RF Exposure Info

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FCCID_390507

               Ecom Sertech Corp.
                                                                   FCC ID :I4L-MS6834
                Rm. 258, Bldg. 17, NO.195, Sec. 4 Chung Hsing
                Rd.,Chu
                   - Tung Chen, Hsinchu, Taiwan 310, R.O.C
                                                                   Report No.:ER03-12-037FRF
                TEL:886 - 3 - 5918012 FAX : 886 - 3- 5825720       Page    1    of    3



RF EXPOSURE EVALUATION

 According to FCC 1.1310 : The criteria listed in the following table shall be used to evaluate the
 environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b)
 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)
                        (A) Limits for Occupational / Control Exposures
   300-1,500                   --                   --              F/300              6
   1,500-100,000               --                   --               5                 6
                    (B) Limits for General Population / Uncontrol Exposures
   300-1,500                   --                   --             F/1500              6
   1,500-100,000               --                   --               1                30



 Friis Formula

        Friis transmission 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
        Pd id the limit of MPE, 1 mW/cm2. 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.


 EUT Operating Condition

        A software provided by client enabled the EUT to transmit and receive data at lowest,
        middle and highest channel individually.


                   Ecom Sertech Corp.
                                                                         FCC ID :I4L-MS6834
                    Rm. 258, Bldg. 17, NO.195, Sec. 4 Chung Hsing
                    Rd.,Chu
                       - Tung Chen, Hsinchu, Taiwan 310, R.O.C
                                                                         Report No.:ER03-12-037FRF
                    TEL:886 - 3 - 5918012 FAX : 886 - 3- 5825720         Page    2    of    3



    Test Result of RF Exposure Evaluation

            Test Item : RF Exposure Evaluation Data
            Test Mode : Normal Operation


    Antenna Gain

            Antenna 1 (white) Gain:The maximum Gain measured in fully anechoic chamber is 2dBi
                                   linear scale. Cable loss = 1dB.
            Antenna 2 (black) Gain:The maximum Gain measured in fully anechoic chamber is 2dBi
                                         linear scale.


    Output Power into Antenna & RF Exposure Evaluation Distance

For Antenna 1 (white), Antenna Gain : 2dBi, cable loss : 1dB.
                                    Output Power to         Power Density
              Channel Frequency                                                            LIMITS
  Channel                               Antenna                at 20cm
                    (MHz)                                                                 (mW/cm2)
                                         (dBm)                (mW/cm2)
    CH1              2412.00                  20.46                 0.022117                   1
    CH6              2437.00                  22.27                 0.033553                   1
    CH11             2462.00                  22.23                 0.033245                   1
 Note : 1. For Antenna 1 802.11b Mode (11Mbps).
       2. The power density Pd (4th column) at a distance of 20cm calculated from the Friis transmission
         formula is far below the limit of 1 mW/cm2 . The EUT is classified as mobile product. So, RF
         exposure limit warning or SAR test are not required.



For Antenna 1 (white), Antenna Gain : 2dBi, cable loss : 1dB.
                                    Output Power to         Power Density
              Channel Frequency                                                            LIMITS
  Channel                               Antenna                at 20cm
                    (MHz)                                                                 (mW/cm2)
                                         (dBm)                (mW/cm2)
    CH1              2412.00                  16.46                 0.008805                   1
    CH6              2437.00                  18.32                 0.013512                   1
    CH11             2462.00                  18.26                 0.013327                   1
 Note : 1. For Antenna 1 802.11g Mode (6Mbps).
       2. The power density Pd (4th column) at a distance of 20cm calculated from the Friis transmission
         formula is far below the limit of 1 mW/cm2 . The EUT is classified as mobile product. So, RF
         exposure limit warning or SAR test are not required.


                   Ecom Sertech Corp.
                                                                           FCC ID :I4L-MS6834
                    Rm. 258, Bldg. 17, NO.195, Sec. 4 Chung Hsing
                    Rd.,Chu
                       - Tung Chen, Hsinchu, Taiwan 310, R.O.C
                                                                           Report No.:ER03-12-037FRF
                    TEL:886 - 3 - 5918012 FAX : 886 - 3- 5825720           Page    3    of    3



For Antenna 2 (black), Antenna Gain : 1dBi.
                                    Output Power to                 Power Density
              Channel Frequency                                                            LIMITS
  Channel                               Antenna                        at 20cm
                    (MHz)                                                                 (mW/cm2)
                                         (dBm)                        (mW/cm2)
    CH1              2412.00                  21.46                   0.027844                 1
    CH6              2437.00                  23.27                   0.042241                 1
    CH11             2462.00                  23.23                   0.041853                 1
 Note : 1. For Antenna 2 802.11b Mode (11Mbps).
       2. The power density Pd (4th column) at a distance of 20cm calculated from the Friis transmission
         formula is far below the limit of 1 mW/cm2 . The EUT is classified as mobile product. So, RF
         exposure limit warning or SAR test are not required.



For Antenna 2 (black), Antenna Gain : 1dBi.
                                    Output Power to                 Power Density
              Channel Frequency                                                            LIMITS
  Channel                               Antenna                        at 20cm
                    (MHz)                                                                 (mW/cm2)
                                         (dBm)                        (mW/cm2)
    CH1              2412.00                  17.46                   0.011085                 1
    CH6              2437.00                  19.32                   0.017011                 1
    CH11             2462.00                  19.26                   0.016778                 1
 Note : 1. For Antenna 2 802.11g Mode (6Mbps).
       2. The power density Pd (4th column) at a distance of 20cm calculated from the Friis transmission
         formula is far below the limit of 1 mW/cm2 . The EUT is classified as mobile product. So, RF
         exposure limit warning or SAR test are not required.



Document Created: 2004-01-07 15:26:50
Document Modified: 2004-01-07 15:26:50

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