12458150-S2V1 FCC Report SAR

FCC ID: BCG-A2032

RF Exposure Info

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FCCID_4204549

Report No.: 12458150-S2V1 Issue Date: 3/15/2019

REVISION HISTORY
Rev. Date Revisions Revised By
V1 3/15/2019 Initial Issue --

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Report No.: 12458150-S2V1 Issue Date: 3/15/2019

Table of Contents

1. Attestation of Test Results ......................................................................................................... 4

2. Test Specification, Methods and Procedures............................................................................ 5

3. Facilities and Accreditation ........................................................................................................ 5

4. SAR Measurement System & Test Equipment .......................................................................... 6
4.1. SAR Measurement System ........................................................................................................ 6
4.2. SAR Scan Procedures ............................................................................................................... 7
4.3. Test Equipment.......................................................................................................................... 9

5. Measurement Uncertainty ........................................................................................................... 9

6. Device Under Test (DUT) Information ...................................................................................... 10
6.1. DUT Description ...................................................................................................................... 10
6.2. Wireless Technologies ............................................................................................................. 10
6.3. Maximum Output Power from Tune-up Procedure ................................................................... 10

7. RF Exposure Conditions (Test Configurations) ...................................................................... 10

8. Dielectric Property Measurements & System Check .............................................................. 11
8.1. Dielectric Property Measurements ........................................................................................... 11
8.2. System Check.......................................................................................................................... 12

9. Conducted Output Power Measurements................................................................................ 13
9.1. Bluetooth ................................................................................................................................. 13

10. Measured and Reported (Scaled) SAR Results ....................................................................... 14
10.1. Bluetooth .............................................................................................................................. 14

11. SAR Measurement Variability ................................................................................................... 14

12. Simultaneous Transmission SAR Analysis ............................................................................. 15

Appendixes .......................................................................................................................................... 16
Appendix A: SAR Setup Photos ......................................................................................................... 16
Appendix B: SAR System Check Plots ............................................................................................... 16
Appendix C: SAR Highest Test Plots .................................................................................................. 16
Appendix D: SAR Tissue Ingredients.................................................................................................. 16
Appendix E: SAR Probe Certificates................................................................................................... 16
Appendix F: SAR Dipole Certificates .................................................................................................. 16

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Report No.: 12458150-S2V1 Issue Date: 3/15/2019

2. Test Specification, Methods and Procedures
The tests documented in this report were performed in accordance with FCC 47 CFR § 2.1093, IEEE STD 1528-
2013, the following FCC Published RF exposure KDB procedures:
o 447498 D01 General RF Exposure Guidance v06
o 447498 D03 Supplement C Cross-Reference v01
o 865664 D01 SAR measurement 100 MHz to 6 GHz v01r04
o 865664 D02 RF Exposure Reporting v01r02

In addition to the above, the following information was used:
o TCB workshop October 2016; RF Exposure Procedures (Bluetooth Duty Factor)
o TCB workshop October 2016; RF Exposure Procedures (DUT Holder Perturbations)

3. Facilities and Accreditation
The test sites and measurement facilities used to collect data are located at

47173 Benicia Street 47266 Benicia Street
SAR Lab A SAR Lab 1
SAR Lab B SAR Lab 2
SAR Lab C SAR Lab 3
SAR Lab D SAR Lab 4
SAR Lab E SAR Lab 5
SAR Lab F
SAR Lab G
SAR Lab H
UL Verification Services Inc. is accredited by NVLAP, Laboratory Code 200065-0.

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6. Device Under Test (DUT) Information
6.1. DUT Description
A2032 is a Bluetooth earbud for the right ear. It has an integral battery, microphone and antenna. It can charge
via bottom contacts and with charge case. It is designed to work in conjunction with left earbud, A2031.
Overall (Length x Width x Height): 16.5 mm x 18 mm x 40.5 mm
Device Dimension
This is a Small device (When the factor is smaller than 9 cm × 5 cm)
Battery Options The rechargeable battery is not user accessible.

6.2. Wireless Technologies
Wireless Duty Cycle used for SAR
Frequency bands Operating mode
technologies testing
Bluetooth 2.4 GHz Version 5.0 LE 100% (DH5)

6.3. Maximum Output Power from Tune-up Procedure
KDB 447498 sec.4.1.(3) at the maximum rated output power and within the tune-up tolerance range specified for
the product, but not more than 2 dB lower than the maximum tune-up tolerance limit

Max. RF Output
RF Air interface
Pow er (dBm)
Bluetooth 12.50
Bluetooth EDR 10.00
Bluetooth LE 10.00

7. RF Exposure Conditions (Test Configurations)
Refer to Appendix A for the specific details of the antenna-to-antenna and antenna-to-edge(s) distances.
Wireless RF Exposure DUT-to-User Test Antenna-to- SAR
Note
technologies Conditions Separation Position edge/surface Required
Head Right Touch < 25mm Yes
Bluetooth 0 mm
Body Right Flat < 25mm Yes

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8. Dielectric Property Measurements & System Check
8.1. Dielectric Property Measurements
The temperature of the tissue-equivalent medium used during measurement must also be within 18C to 25C and
within ± 2C of the temperature when the tissue parameters are characterized.
The dielectric parameters must be measured before the tissue-equivalent medium is used in a series of SAR
measurements. The parameters should be re-measured after each 3 – 4 days of use; or earlier if the dielectric
parameters can become out of tolerance; for example, when the parameters are marginal at the beginning of the
measurement series.
Tissue dielectric parameters were measured at the low, middle and high frequency of each operating frequency
range of the test device.
The dielectric constant (εr) and conductivity (σ) of typical tissue-equivalent media recipes are expected to
be within ± 5% of the required target values; but for SAR measurement systems that have implemented the SAR
error compensation algorithms documented in IEEE Std 1528-2013, to automatically compensate the measured
SAR results for deviations between the measured and required tissue dielectric parameters, the tolerance for εr and
σ may be relaxed to ± 10%. This is limited to frequencies ≤ 3 GHz.

Tissue Dielectric Parameters
FCC KDB 865664 D01 SAR Measurement 100 MHz to 6 GHz
Head Body
Target Frequency (MHz)
er s (S/m) er s (S/m)
150 52.3 0.76 61.9 0.80
300 45.3 0.87 58.2 0.92
450 43.5 0.87 56.7 0.94
835 41.5 0.90 55.2 0.97
900 41.5 0.97 55.0 1.05
915 41.5 0.98 55.0 1.06
1450 40.5 1.20 54.0 1.30
1610 40.3 1.29 53.8 1.40
1800 – 2000 40.0 1.40 53.3 1.52
2450 39.2 1.80 52.7 1.95
3000 38.5 2.40 52.0 2.73
5000 36.2 4.45 49.3 5.07
5100 36.1 4.55 49.1 5.18
5200 36.0 4.66 49.0 5.30
5300 35.9 4.76 48.9 5.42
5400 35.8 4.86 48.7 5.53
5500 35.6 4.96 48.6 5.65
5600 35.5 5.07 48.5 5.77
5700 35.4 5.17 48.3 5.88
5800 35.3 5.27 48.2 6.00

IEEE Std 1528-2013
Refer to Table 3 within the IEEE Std 1528-2013

Dielectric Property Measurements Results:
SAR Band Tissue Frequency Relative Perm ittivity (єr) Conductivity (σ)
Date D e lt a D e lt a
Lab (MHz) Type (MHz) M e a s ure d T a rge t M e a s ure d T a rge t
±5 % ±5 %
2450 51.65 52.70 -1.99 2.04 1.95 4.51
2 3/15/2019 2450 Body 2400 51.77 52.77 -1.90 1.98 1.90 4.16
2480 51.59 52.66 -2.04 2.07 1.99 3.86
2450 37.78 39.20 -3.62 1.81 1.80 0.50
4 3/15/2019 2450 Head 2400 37.82 39.30 -3.76 1.77 1.75 1.05
2480 37.77 39.16 -3.55 1.83 1.83 -0.24

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10. Measured and Reported (Scaled) SAR Results
SAR Test Reduction criteria are as follows:
 Reported SAR(W/kg) for WWAN = Measured SAR *Tune-up Scaling Factor
 Reported SAR(W/kg) for Wi-Fi and Bluetooth = Measured SAR * Tune-up scaling factor * Duty Cycle scaling factor
 Duty Cycle scaling factor = 1 / Duty cycle (%)

KDB 447498 D01 General RF Exposure Guidance:
Testing of other required channels within the operating mode of a frequency band is not required when the reported 1-g or 10-g
SAR for the mid-band or highest output power channel is:
 ≤ 0.8 W/kg or 2.0 W/kg, for 1-g or 10-g respectively, when the transmission band is ≤ 100 MHz
 ≤ 0.6 W/kg or 1.5 W/kg, for 1-g or 10-g respectively, when the transmission band is between 100 MHz and 200 MHz
 ≤ 0.4 W/kg or 1.0 W/kg, for 1-g or 10-g respectively, when the transmission band is ≥ 200 MHz

10.1. Bluetooth
Power (dBm) 1-g SAR (W/kg) 10-g SAR (W/kg)
RF Exposure Dist. Freq. Duty Plot
Mode Test Position Ch #. Tune-up
Conditions (mm) (MHz) Cycle Meas. Meas. Scaled Meas. Scaled No.
Limit
Head Right Touch 39 2441 100.0% 12.50 12.50 0.095 0.095 0.045 0.045 1
GFSK 0
Body Right Flat 39 2441 100.0% 12.50 12.50 0.581 0.581 0.169 0.169 2

Notes:
SAR Testing was performed on the Flat Phantom for normal use for Head. Additional SAR Testing was performed on the location clos est to the
Antenna (Rear of the Device) of similar configuration to demonstrate compliance. This was reported as the highest SAR.

11. SAR Measurement Variability
In accordance with published RF Exposure KDB 865664 D01 SAR measurement 100 MHz to 6 GHz. These
additional measurements are repeated after the completion of all measurements requiring the same head or body
tissue-equivalent medium in a frequency band. The test device should be returned to ambient conditions (normal
room temperature) with the battery fully charged before it is re-mounted on the device holder for the repeated
measurement(s) to minimize any unexpected variations in the repeated results.

1) Repeated measurement is not required when the original highest measured SAR is <0.8 or 2 W/kg (1-g or 10-g
respectively); steps 2) through 4) do not apply.
2) When the original highest measured SAR is ≥ 0.8 or 2 W/kg (1-g or 10-g respectively), repeat that
measurement once.
3) Perform a second repeated measurement only if the ratio of largest to smallest SAR for the original and first
repeated measurements is > 1.20 or 3 (1-g or 10-g respectively) or when the original or repeated measurement
is ≥ 1.45 or 3.6 W/kg (~ 10% from the 1-g or 10-g respective SAR limit).
4) Perform a third repeated measurement only if the original, first, or second repeated measurement is ≥ 1.5 or
3.75 W/kg (1-g or 10-g respectively) and the ratio of largest to smallest SAR for the original, first and second
repeated measurements is > 1.20 or 3 (1-g or 10-g respectively).

First
Frequency Repeated Highest Repeated
Band Air Interface RF Exposure Conditions Test Position SAR Measured Measured Largest to
(MHz) (Yes/No) SAR (W/kg) SAR Smallest
(W/kg) SAR Ratio
2400 BT Body Right Flat No 0.581 N/A N/A

Note(s):
Second Repeated Measurement is not required since the ratio of the largest to smallest SAR for the original and first repeated
measurement is not > 1.20 or 3 (1-g or 10-g respectively).

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12. Simultaneous Transmission SAR Analysis
N/A

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Report No.: 12458150-S2V1 Issue Date: 3/15/2019

Appendixes
Refer to separated files for the following appendixes.

Appendix A: SAR Setup Photos

Appendix B: SAR System Check Plots

Appendix C: SAR Highest Test Plots

Appendix D: SAR Tissue Ingredients

Appendix E: SAR Probe Certificates

Appendix F: SAR Dipole Certificates

END OF REPORT

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Document Created: 2019-03-22 02:16:11
Document Modified: 2019-03-22 02:16:11

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