RF Exposure Report

FCC ID: 2AT7G-GTCOM-LB-02

RF Exposure Info

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FCCID_4399972

                              Shenzhen Toby Technology Co., Ltd.
                                                                           Report No.: TB-MPE167628
                                                                           Page:       1 of 4

                           RF Exposure Evaluation
                        FCC ID: 2AT7G-GTCOM-LB-02
  1. Client Information
   Applicant    : Global Tone Communication Technology Co., Ltd.
                  1601, 16th Floor, No. 20 Shijingshan Road, Shijingshan District,
   Address      :
                  Beijing,China
   Manufacturer : Global Tone Communication Technology Co., Ltd.
                  1601, 16th Floor, No. 20 Shijingshan Road, Shijingshan District,
   Address      :
                  Beijing,China


  2. General Description of EUT
  EUT Name            : Language Box
  Models No.          : GTCOM-LB-02
  Model                 N/A
                      :
  Difference
                                               2.4G:
                         Operation             802.11b/g/n(HT20): 2412MHz~2462MHz
                         Frequency:            802.11n(HT40): 2422MHz~2452MHz
                                               Bluetooth 4.1: 2402MHz~2480MHz
                                               802.11b: DSSS(CCK, DQPSK, DBPSK)
  Product
                      :                        802.11g/n: OFDM(BPSK,QPSK,16QAM,
  Description
                                               64QAM)
                        Modulation Type:       BLE: GFSK
                                               BT:GFSK (1 Mbps)
                                               Pi/4-DQPSK (2 Mbps)
                                               8-DPSK (3 Mbps)
                        Adapter(M120300W330):
  Power
                      : Input: AC 180-240V, 50/60Hz, 0.8A
  Supply
                        Output: DC 12V, 3A
  Connecting
                     : Please refer to the User's Manual
  I/O Port(S)
Note: More test information about the EUT please refer the RF Test Report.




                                                                                              TB-RF-074-1.0

           1A/F., Bldg.6, Yusheng Industrial Zone, The National Road No.107 Xixiang Section 467, Xixiang,
                                      Bao’an, Shenzhen, China
                                  Tel: +86 75526509301       Fax: +86 75526509195


                                                                             Report No.: TB-MPE167628
                                                                             Page:       2 of 4



                                 MPE Calculations for WIFI

 1. Antenna Gain:
                     .
                                           Model          Frequency Range
                         FPC Ant:                         2400~2483.5MHz
                                           N/A
                                                                2dBi


 2. EUT Operation Condition:
    Software provided by client enabled the EUT to transmit and receive data at lowest, middle
    and highest channel individually.

 3. Exposure Evaluation:
    Equation from page 18 of OET Bulletin 65, Edition 97-01
      S=(PG)/4πR2
    Where
       S: power density
       P: power input to the antenna
       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

 4. Test Result:
    2.4G WIFI&BLE
                                                                                                Limit of
                   Conducted                Max tune up                             Power
                                 Turn-up                  ANT Gain    Distance                   Power
                   Power(max)                 power                                Density
    Mode                          Power                     (dBi)       (cm)                    Density
                     (dBm)                     (dBm)                                      2
                                   (dB)                      [G]         [R]      (mW/ cm )            2
                                                 [P]                                           (mW/ cm )
                                                                                     [S]
                                                                                                   (S)

    BLE             -1.146       -1±1            0         2.0          20          0.0003         1


  802.11B           15.48        15±1          16          2.0          20          0.0126         1


  802.11G           14.71        14±1          15          2.0          20          0.0100         1

802.11N(HT20)       16.123       16±1          17          2.0          20          0.0158         1

802.11N(HT40)       15.758       15±1          16          2.0          20          0.0126         1




                                                                                        TB-RF-074-1.0


                                                                          Report No.: TB-MPE167628
                                                                          Page:       3 of 4


BT BER+EDR
                   Conducted                    Max tune up    ANT Gain                  Power
                                      Turn-up                             Distance      Density
                   Power(max)                     power          (dBi)
    Mode                               Power                                (cm)               2
                     (dBm)                         (dBm)       Numeric                 (mW/ cm )
                                        (dB)                                 [R]
                                                     [P]          [G]                     [S]

   GFSK              4.946            5±1           6            2.0        20          0.0013

 Pi/4-DQPSK          4.564            5±1           6            2.0        20          0.0013


   8-DPSK            4.880            5±1           6            2.0        20          0.0013



                                The worst RF Exposure Evaluation
            Worst Calculation Value
                                                    Total Calculation
                                                                           Threshold Value
    2.4WiFi Mode             Bluetooth Mode               Value


      0.0158                    0.0013                  0.0171                   1.0




                                                                                       TB-RF-074-1.0


                                                                       Report No.: TB-MPE167628
                                                                       Page:       4 of 4


5. Conclusion:
As specified in Table 1B of 47 CFR 1.1310- Limits for Maximum Permissible Exposure (MPE),
                 Limits for General Population/ Uncontrolled Exposure
                        Frequency Range               Power density
                              (MHz)                     (mW/ cm2)
                            300-1,500                    F/1500
                          1,500-100,000                     1.0

  For BT:2402~2480 MHz
  For WIFI:2412~2462 MHz

  MPE limit S: 1mW/ cm2
  The MPE is calculated as 0.0171mW / cm2 < limit 1mW / cm2. So, RF exposure limit
  warning or SAR test are not required.

  The EUT will only be used with a separation of 20cm or greater between the antenna and
  nearby persons and can therefore be considered a mobile transmitter per 47 CFR2.1091
  (b).

  The RF Exposure Information page from the manual is included here for reference.


Note
   For a more detailed features description, please refer to the RF Test Report.




                                  -----END OF REPORT-----




                                                                                   TB-RF-074-1.0



Document Created: 2019-08-15 09:27:17
Document Modified: 2019-08-15 09:27:17

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