FCC MPE Report

FCC ID: 2AAIN-MNTRIO

RF Exposure Info

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FCCID_4398445

      SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD.                                                     FCC ID: 2AAIN-MNTRIO


                                       Maximum Permissible Exposure Report
Product Information
  FCC ID:                                         2AAIN-MNTRIO
  Product name                                    MONSTER TRIO
                                                  MNTRIO, MNTRIO-X, MNTRIO-XL, MNTRIO-XR, MNTRIO-SR,
  Model number
                                                  MNTRIO-S, MNTRIO-R

  Power supply                                    Input: DC 12V/4A
                                                  Output: 2* 5V/1A
  Modulation Type                                 GFSK, π/4-DQPSK, 8DPSK for Bluetooth V4.2(BDR/EDR)
  Antenna Type                                    PCB Antenna
  Antenna Gain                                    0dBi (Max.)
  Hardware version                                V 1.0
  Software version                                V 1.0
  Extreme temp. Tolerance                         -20°C to +55°C
  Exposure category                               General population/uncontrolled environment
  EUT Type                                        Production Unit
  Device Type                                     Stationary Device


2. Evaluation Method
Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures
that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines.
In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile
device whereby a distance of 0.2m normally can be maintained between the user and the device, and below
RF Permissible Exposure limit shall comply with.

In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the sum
of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the
calculated/estimated, numerically modelled or measured field strengths or power density, is ≤ 1.0. The MPE
ratio of each antenna is determined at the minimum test separation distance required by the operating
configurations and exposure conditions of the host device, according to the ratio of field strengths or power
density to MPE limit, at the test frequency. Either the maximum peak or spatially averaged results from
measurements or numerical simulations may be used to determine the MPE ratios. Spatial averaging does not
apply when MPE is estimated using simple calculations based on far-field plane-wave equivalent conditions.
The antenna installation and operating requirements for the host device must meet the minimum test
separation distances required by all antennas, in both standalone and simultaneous transmission operations,
to satisfy compliance.


3. Limit
3. 1 Refer evaluation method

ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency
Electromagnetic Fields, 3 kHz to 300 GHz.
FCC KDB publication 447498 D01 General 1 RF Exposure Guidance v06: Mobile and Portable Devices RF
Exposure Procedures and Equipment Authorization Policies.
FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits.
FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices




3. 2 Limit


    This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
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      SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD.                                                     FCC ID: 2AAIN-MNTRIO

                     Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure
              Frequency         Electric Field    Magnetic Field    Power Density Averaging Time
             Range(MHz)         Strength(V/m)     Strength(A/m)        (mW/cm²)      (minute)
                                   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
                    Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure
              Frequency         Electric Field    Magnetic Field    Power Density Averaging Time
             Range(MHz)         Strength(V/m)     Strength(A/m)        (mW/cm²)      (minute)
                                   Limits for Occupational/Controlled Exposure
               0.3 – 3.0             614               1.63              (100) *        30
               3.0 – 30             824/f             2.19/f            (180/f2)*       30
               30 – 300              27.5             0.073                 0.2         30
              300 – 1500               /                 /               f/1500         30
            1500 – 100,000             /                 /                  1.0         30

          F=frequency in MHz
          *=Plane-wave equivalent power density

4. MPE Calculation Method
Predication of MPE limit at a given distance
Equation from page 18 of OET Bulletin 65, Edition 97-01

S=PG/4πR²

Where: S=power density
       P=power input to 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


5. Antenna Information
   BT can only use antennas certificated as follows provided by manufacturer;

         Internal              Antenna type and
                                                             Operate frequency band                  Maximum antenna gain
       Identification          antenna number
                                PCB Antenna
         Antenna                                              2000 MHz – 2500 MHz                                 0dBi


6. Conducted Power
                                                                  Frequency              Measured Peak Output Power
               Test Mode                     Channel
                                                                    (MHz)                          (dBm)
                                                 0                   2402                                -3.751
                   GFSK                         39                   2441                                -2.275
                                                78                   2480                                -2.980
                                                 0                   2402                                -4.440
                π/4DQPSK                        39                   2441                                -2.924
                                                78                   2480                                -3.850
                                                 0                   2402                                -4.380
                 8DPSK                          39                   2441                                -2.769
                                                78                   2480                                -3.531




7. Manufacturing Tolerance

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      SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD.                                                     FCC ID: 2AAIN-MNTRIO

                                                        [BT Classics]
                                                           GFSK (Peak)
                    Channel                      Channel 0             Channel 39                          Channel 78
                 Target (dBm)                      -3.0                   -2.0                                -3.0
                Tolerance ±(dB)                     1.0                    1.0                                 1.0
                                                         π/4DQPSK (Peak)
                    Channel                      Channel 0             Channel 39                          Channel 78
                 Target (dBm)                      -4.0                   -3.0                                -4.0
                Tolerance ±(dB)                     1.0                    1.0                                 1.0
                                                          8DPSK (Peak)
                    Channel                      Channel 0             Channel 39                          Channel 78
                 Target (dBm)                      -4.0                   -2.0                                -3.0
                Tolerance ±(dB)                     1.0                    1.0                                 1.0


8. Measurement Results
8.1 Standalone MPE

As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any
body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation
distance, r =20cm, as well as the gain of the used antenna refer to antenna information, the RF power density
can be obtained.

Antenna 0

                                   Output power               Antenna         Antenna                                         MPE
                                                                                               Duty          MPE
   Modulation Type                                             Gain             Gain                                          Limits
                                 dBm             mW                                            Cycle       (mW/cm2)
                                                               (dBi)          (linear)                                      (mW/cm2)
           GFSK                 -2.275          0.592          0.00             0.08           100%          0.0011          1.0000
        π/4DQPSK                -2.924          0.510          0.00             0.08           100%          0.0010          1.0000
          8DPSK                 -2.769          0.529          0.00             0.08           100%          0.0010          1.0000

Remark:
1. Output power (Peak) including tune-up tolerance;
2. MPE evaluate distance is 20cm from user manual provide by manufacturer;


8.2 Simultaneous Transmission MPE

The sample support one BT modular and one antenna, no need consider simultaneous transmission;
9. Conclusion

The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of
mobile device.



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




    This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
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Document Created: 2019-08-13 12:03:45
Document Modified: 2019-08-13 12:03:45

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