11981268 -S5V2 FCC Report_SAR

FCC ID: XRAFB504

RF Exposure Info

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FCCID_3756170

Report No.: 11981268-S5V2 Issue Date: 2/14/2018

Revision History
Rev. Date Revisions Revised By
V1 2/5/2018 Initial Issue --
Section 1: Updated Highest Reported SAR
Section 6.4: Updated maximum output power
V2 2/5/2018 Coltyce Sanders
Section 9.1: Updated maximum output power
Section 10.1: Updated Tune-up limit

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Report No.: 11981268-S5V2 Issue Date: 2/14/2018

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. Test Rationale ..................................................................................................................................... 10
6.3. Wireless Technologies ........................................................................................................................ 10
6.4. Maximum Output Power from Tune-up Procedure ............................................................................. 11

7. RF Exposure Conditions (Test Configurations) ................................................................................ 11

8. Dielectric Property Measurements & System Check ........................................................................ 12
8.1. Dielectric Property Measurements ...................................................................................................... 12
8.2. System Check ..................................................................................................................................... 13

9. Conducted Output Power Measurements .......................................................................................... 14
9.1. Wi-Fi 2.4GHz (DTS Band)................................................................................................................... 14
9.2. Bluetooth ............................................................................................................................................. 14

10. Measured and Reported (Scaled) SAR Results ................................................................................. 15
10.1. Wi-Fi (DTS Band) ............................................................................................................................ 16
10.2. Standalone SAR Test Exclusion Considerations & Estimated SAR ............................................... 16

11. SAR Measurement Variability .............................................................................................................. 17

12. Simultaneous Transmission SAR Analysis ....................................................................................... 17

Appendixes ....................................................................................................................................................... 18
11981268-S5V1 Appendix A: SAR Setup Photos .......................................................................................... 18
11981268-S5V1 Appendix B: SAR System Check Plots ............................................................................... 18
11981268-S5V1 Appendix C: Highest SAR Test Plots .................................................................................. 18
11981268-S5V1 Appendix D: SAR Liquid Tissue Ingredients ....................................................................... 18
11981268-S5V1 Appendix E: SAR Probe Calibration Certificates ................................................................ 18
11981268-S5V1 Appendix F: SAR Dipole Calibration Certificates ................................................................ 18

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Report No.: 11981268-S5V2 Issue Date: 2/14/2018

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 248227 D01 802.11 Wi-Fi SAR v02r02
o 447498 D01 General RF Exposure Guidance v06
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; Page 7, RF Exposure Procedures (Bluetooth Duty Factor)

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 F
SAR Lab G
SAR Lab H
UL Verification Services Inc. is accredited by NVLAP, Laboratory Code 200065-0.

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Report No.: 11981268-S5V2 Issue Date: 2/14/2018

6. Device Under Test (DUT) Information
6.1. DUT Description
Overall (Length x Width): 38.5 mm x 41.06 mm
Device Dimension
Display Diagonal: 35 mm
Back Cover ☒ The Back Cover is not removable.

Battery Options ☒ The rechargeable battery is not user accessible.

S/N Notes

B2-H3-12 Wi-Fi/BT-Sample
Test sample information
B2-H3-08 Wi-Fi/BT-Sample

B2-H3-10 Wi-Fi/BT-Sample

Hardware Version B2
Software Version 32.3.125.8

6.2. Test Rationale
The DUT may be supplied with one of four available bracelets. There is a plastic bracelet and three metal
bracelets described as mesh, link and tri-link. See appendix A for pictures of the DUT with each bracelet.
Initial testing was performed using the plastic bracelet. The measurement with the highest reported SAR
was repeated for each of the metallic bracelets.
6.3. Wireless Technologies
Wireless Duty Cycle used for SAR
Frequency bands Operating mode
technologies testing
802.11b 98.2% (802.11b)
Wi-Fi 2.4 GHz 802.11g 98.51%(802.11g)
802.11n (HT20) 98.51%(802.11n)
GFSK
DQPSK
Bluetooth 2.4 GHz 77.07%1
8PSK
Version 4.2 LE

Notes:
1. The Bluetooth qualifies for SAR Test exclusion. Refer to §10.2 for SAR test exclusion.

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6.4. Maximum Output Power from Tune-up Procedure
Max. RF Output
RF Air interface Mode Channels
Power (dBm)
1-12 19.0
802.11b
13 15.0
1,11 18.0
2-9 20.0
802.11g 10 19.0
12 15.0
WiFi 2.4 GHz 13 3.0
1 18.0
2-9 20.0
10 19.0
802.11n HT20
11 17.0
12 15.0
13 3.0
GFSK, BDR All 11.5
Bluetooth
LE All 9.0

7. RF Exposure Conditions (Test Configurations)
Refer to “SAR Photos and Ant locations” Appendix 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
technologies Conditions Separation Position edge/surface Required
Extremity
WLAN 0 Rear N/A Yes
(Hand/Wrist/Ankle)

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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)
εr σ (S/m) εr σ (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:
Relative Permittivity (єr) Conductivity (σ)
SAR Band Tissue Frequency
Date Delta Delta
Lab (MHz) Type (MHz) Measured Target Measured Target
(%) (%)
2450 50.89 52.70 -3.43 2.02 1.95 3.79
3 1/8/2018 2450 Body 2400 50.97 52.77 -3.42 1.97 1.90 3.84
2480 50.79 52.66 -3.56 2.06 1.99 3.30

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9. Conducted Output Power Measurements
9.1. Wi-Fi 2.4GHz (DTS Band)
Measured Results
Band Freq. Meas. Avg Max Output SAR Test
Mode Data Rate Ch # Pwr (dBm)
(GHz) (MHz) Power (dBm) (Yes/No)
1 2412 18.7
802.11b 1 Mbps 6 2437 18.6 19.0 Yes
11 2462 18.7
1 2412 18.0
2.4 802.11g 6 Mbps 6 2437 Not Required 20.0 No
11 2462 18.0
1 2412 18.0
802.11n
6.5 Mbps 6 2437 Not Required 20.0 No
(HT20)
11 2462 17.0

Note(s):
1. SAR is not required for 802.11g/n modes when the adjusted SAR for 802.11b is < 3 W/kg.
2. Additionally, SAR is not required for Channels 12 and 13 because the tune-up limit and the measured output power for
these two channels are no greater than those for the default test channels. Refer to §6.4.

9.2. Bluetooth
Maximum tune-up tolerance limit is 11.5 dBm. This power level qualifies for exclusion of SAR testing. Refer to
§10.2 for SAR test exclusion.

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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

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

KDB 248227 D01 SAR meas for 802.11:
SAR test reduction for 802.11 Wi-Fi transmission mode configurations are considered separately for DSSS and OFDM. An initial
test position is determined to reduce the number of tests required for certain exposure configurations with multiple test positions.
An initial test configuration is determined for each frequency band and aggregated band according to maximum output power,
channel bandwidth, wireless mode configurations and other operating parameters to streamline the measurement requirements.
For 2.4 GHz DSSS, either the initial test position or DSSS procedure is applied to reduce the number of SAR tests; these are
mutually exclusive. For OFDM, an initial test position is only applicable to next to the ear, UMPC mini-tablet and hotspot mode
configurations, which is tested using the initial test configuration to facilitate test reduction. For other exposure conditions with a
fixed test position, SAR test reduction is determined using only the initial test configuration.
The multiple test positions require SAR measurements in head, hotspot mode or UMPC mini-tablet configurations may be
reduced according to the highest reported SAR determined using the initial test position(s) by applying the DSSS or OFDM SAR
measurement procedures in the required wireless mode test configuration(s). The initial test position(s) is measured using the
highest measured maximum output power channel in the required wireless mode test configuration(s). When the reported SAR
for the initial test position is:

• ≤ 0.4 W/kg, further SAR measurement is not required for the other test positions in that exposure configuration and
wireless mode combination within the frequency band or aggregated band. DSSS and OFDM configurations are
considered separately according to the required SAR procedures.
• > 0.4 W/kg, SAR is repeated using the same wireless mode test configuration tested in the initial test position to
measure the subsequent next closet/smallest test separation distance and maximum coupling test position, on the
highest maximum output power channel, until the reported SAR is ≤ 0.8 W/kg or all required test positions are tested.
o For subsequent test positions with equivalent test separation distance or when exposure is dominated by coupling
conditions, the position for maximum coupling condition should be tested.
o When it is unclear, all equivalent conditions must be tested.
• For all positions/configurations tested using the initial test position and subsequent test positions, when the reported
SAR is > 0.8 W/kg, measure the SAR for these positions/configurations on the subsequent next highest measured
output power channel(s) until the reported SAR is ≤ 1.2 W/kg or all required test channels are considered.
o The additional power measurements required for this step should be limited to those necessary for identifying
subsequent highest output power channels to apply the test reduction.
• When the specified maximum output power is the same for both UNII 1 and UNII 2A, begin SAR measurements in UNII
2A with the channel with the highest measured output power. If the reported SAR for UNII 2A is ≤ 1.2 W/kg, SAR is not
required for UNII 1; otherwise treat the remaining bands separately and test them independently for SAR.
• When the specified maximum output power is different between UNII 1 and UNII 2A, begin SAR with the band that has
the higher specified maximum output. If the highest reported SAR for the band with the highest specified power is ≤
1.2 W/kg, testing for the band with the lower specified output power is not required; otherwise test the remaining bands
independently for SAR.

To determine the initial test position, Area Scans were performed to determine the position with the Maximum Value of SAR
(measured). The position that produced the highest Maximum Value of SAR is considered the worst case position; thus used as
the initial test position.

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Report No.: 11981268-S5V2 Issue Date: 2/14/2018

10.1. Wi-Fi (DTS Band)
Power (dBm) 10-g SAR (W/kg)
RF Exposure Dist. Wrist-Band Freq. Plot
Mode Test Position Ch #. Duty Cycle Tune-up
Conditions (mm) Tested (MHz) Meas. Meas. Scaled No.
limit
1 2412.0 98.2% 19.0 18.7 0.050 0.055 1
Plastic 6 2437.0 98.2% 19.0 18.6 0.041 0.046
802.11b 11 2462.0 98.2% 19.0 18.7 0.036 0.039
Extremity 0 Rear
1 Mbps Mesh 1 2412.0 98.2% 19.0 18.7 0.013 0.014
Link 1 2412.0 98.2% 19.0 18.7 0.012 0.013
Tri-Link 1 2412.0 98.2% 19.0 18.7 0.011 0.012

Notes:
1. When the 802.11b reported SAR of the highest measured maximum output power channel is ≤ 2.0 W/kg, no further SAR testing is required.
2. SAR testing is not required for OFDM mode(s) when the highest reported SAR for DSSS is adjusted by the ratio of OFDM to DSSS
specified maximum output power and the adjusted SAR is ≤ 3 W/kg.

10.2. Standalone SAR Test Exclusion Considerations & Estimated SAR
The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances
≤ 50 mm are determined by:
[(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
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 is applied to determine SAR test exclusion.

When the standalone SAR test exclusion is applied to an antenna that transmits simultaneously with other
antennas, the standalone SAR must be estimated according to following to determine simultaneous transmission
SAR test exclusion:
• (max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)]·[√f(GHz)/x] W/kg for test
separation distances ≤ 50 mm;
where x = 7.5 for 1-g SAR, and x = 18.75 for 10-g SAR.
• 0.4 W/kg for 1-g SAR and 1.0 W/kg for 10-g SAR, when the test separation distances is > 50 mm.

Max. tune-up tolerance Power Min. test SAR test
RF Exposure Frequency
RF Air interface separation exclusion
Conditions (GHz)
(dBm) (mW) distance (mm) Result*

Bluetooth Extremity 2.480 11.5 14 0 4.4

Conclusion:
*: The computed value is ≤ 7.5; therefore, this qualifies for Standalone SAR test exclusion.

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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 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.

Frequency Repeated Highest
Band Air Interface RF Exposure Conditions Test Position SAR Measured
(MHz) (Yes/No) SAR (W/kg)

2400 Wi-Fi 802.11b/g/n Extremity Rear No 0.050

Note(s):
Repeated Measurement is not required since measured SAR is < 2.0 W/kg.

12. Simultaneous Transmission SAR Analysis
This device does not support Simultaneous Transmission.

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Report No.: 11981268-S5V2 Issue Date: 2/14/2018

Appendixes
Refer to separated files for the following appendixes.

11981268-S5V1 Appendix A: SAR Setup Photos

11981268-S5V1 Appendix B: SAR System Check Plots

11981268-S5V1 Appendix C: Highest SAR Test Plots

11981268-S5V1 Appendix D: SAR Liquid Tissue Ingredients

11981268-S5V1 Appendix E: SAR Probe Calibration Certificates

11981268-S5V1 Appendix F: SAR Dipole Calibration Certificates

END OF REPORT

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Document Created: 2018-02-14 16:14:19
Document Modified: 2018-02-14 16:14:19

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