RF exposure info

FCC ID: 2ASPY-A8

RF Exposure Info

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FCCID_4209204

                                    RF Exposure evaluation
FCC ID: 2ASPY-A8


1.1. Applicable Standard
According to §1.1307(b)(1), systems operating under the provisions of this 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.
According to §1.1310 and §2.1093 RF exposure requirement
KDB447498 v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization
Policies


1.2. Requirement
According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test
exclusion considerations: “Unless specifically required by the published RF exposure KDB procedures,
standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions,
by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion
Threshold condition, listed below, is satisfied. These test exclusion conditions are based on source-based
time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up
tolerance, and the minimum test separation distance required for the exposure conditions.22 The minimum
test separation distance is determined by the smallest distance from the antenna and radiating structures or
outer surface of the device, according to the host form factor, exposure conditions and platform requirements,
to any part of the body or extremity of a user or bystander (see 5) of section 4.1). To qualify for SAR test
exclusion, the test separation distances applied must be fully explained and justified by the operating
configurations and exposure conditions of the transmitter and applicable host platform requirements, typically
in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB
procedures. When no other RF exposure testing or reporting is required, a statement of justification and
compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test
exclusion. When required, the device specific conditions described in the other published RF exposure KDB
procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT
two-way radios, handsets, laptops & tablets etc.23 “
 [(max. power of channel, including tune-up tolerance, mW)/ (min. test separation distance, mm)] · [√f (GHz)]
≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where:
• f (GHz) is the RF channel transmit frequency in GHz
• Power and distance are rounded to the nearest mW and mm before calculation
• The result is rounded to one decimal place for comparison
• 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below
The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for
transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5
mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion.


1.3. Manufacturing tolerance

                                                    GFSK
        Channel                    Channel 00                  Channel 39                   Channel 78
     Target (dBm)                      5                           7                            7
    Tolerance ±(dB)                   1.0                         1.0                          1.0
                                                 π/4DQPSK
        Channel                    Channel 00                  Channel 39                   Channel 78
     Target (dBm)                      6                           8                            8
    Tolerance ±(dB)                   1.0                         1.0                          1.0
                                                   8DPSK
        Channel                    Channel 00                  Channel 39                   Channel 78
     Target (dBm)                      6                           8                            8
    Tolerance ±(dB)                   1.0                         1.0                          1.0
                                                 BLE GFSK
        Channel                    Channel 00                  Channel 19                   Channel 39
     Target (dBm)                      3                           4                            5
    Tolerance ±(dB)                   1.0                         1.0                          1.0


2. Evaluation Result
Evaluation Results
                                                      RF output power
                                  Antenna            (including tune-up            SAR Test
                                                                                               SAR Test
 Band/Mode           f (GHz)      Distance                tolerance)               Exclusion
                                                                                               Exclusion
                                    (mm)             dBm             mW            Threshold

     BT              2.441            5                9              7.943         2.5<3.0      Yes

3. Conclusion
The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure
and SAR Exclusion Threshold per KDB 447498 v06, No SAR is required.

                               .....................End.........................



Document Created: 2019-03-18 15:49:51
Document Modified: 2019-03-18 15:49:51

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