SAR report 01

FCC ID: XRAFB202

Test Report

Download: PDF

FCCID_3510912

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

Revision History
Rev. Date Revisions Revised By
V1 7/18/2017 Initial Issue --
V2 7/19/2017 Section 4.3 – Updated test equipment list Dave Weaver

Page 2 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

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 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

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.

Page 5 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

6. Device Under Test (DUT) Information
6.1. DUT Description
Overall (Length x Width): 313 mm x 313 mm
Device Dimension Overall Diagonal: 445 mm
Display Diameter: 56 mm
Back Cover ☒ Normal Battery Cover
Battery Options ☒ Exchangeable AA batteries

S/N Notes
Test sample information
1704262408316A4617 SAR Unit

Hardware Version DVT2.1
Software Version 10.2

6.2. Wireless Technologies
Wireless Duty Cycle used for SAR
Frequency bands Operating mode
technologies testing
802.11b
Wi-Fi 2.4 GHz 802.11g 100%
802.11n (HT20)
BLE 2.4 GHz BLE (Chain 0 only) NA

6.3. Maximum Output Power
Max. RF Output Pow er (dBm)
RF Air interface Mode
Chain 0 Chain 1
802.11b 19.5 19.5
WiFi 2.4 GHz 802.11g 19.5 19.5
802.11n HT20 19.5 19.5
BLE 7.5 NA

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 SAR
technologies Conditions Separation Position Required
WLAN (Chain 0) Yes
Extremity 0 mm Top
WLAN (Chain 1) Yes

BLE (Chain 0) Extremity 0 mm Top No
The normal use condition is with the user standing on the DUT. Therefore only the top surface was
assessed. BLE is excluded from SAR testing (see Section 10.2).

Page 10 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

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:
Relative Permittivity (єr) Conductivity (σ)
SAR Band Tissue Frequency
Date Delta Delta
Lab (MHz) Type (MHz) Measured Target Measured Target
(%) (%)

2450 50.92 52.70 -3.38 2.01 1.95 3.03
3 6/30/2017 2450 Body 2400 51.06 52.77 -3.25 1.96 1.90 3.16
2480 50.85 52.66 -3.44 2.05 1.99 2.70
2450 50.22 52.70 -4.71 1.95 1.95 -0.26
2 7/17/2017 2450 Body 2400 50.28 52.77 -4.72 1.87 1.90 -1.27
2480 50.11 52.66 -4.85 1.96 1.99 -1.61

Page 11 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

9. Conducted Output Power Measurements
9.1. Wi-Fi 2.4GHz (DTS Band)
Measured Results
Band Freq. Meas. Avg Pwr (dBm) Max Output Power (dBm) SAR Test
Mode Data Rate Ch #
(GHz) (MHz) Chain 0 Chain 1 Chain 0 Chain 1 (Yes/No)
1 2412 18.3 18.2
802.11b 1 Mbps 6 2437 18.2 18.3 19.5 19.5 Yes
11 2462 18.4 18.5
1 2412
2.4 802.11g 6 Mbps 6 2437 19.5 19.5 No
11 2462
Not Required Not Required
1 2412
802.11n
6.5 Mbps 6 2437 19.5 19.5 No
(HT20)
11 2462

Note(s):
1. For “Not required”, SAR Test reduction was applied from KDB 248227 guidance, Sec. 2.1, b), 1) when the same maximum
power is specified for multiple transmission modes in a frequency band, the largest channel bandwidth, lowest order
modulation, lowest data rate and lowest order 802.11a/g/n/ac mode is used for SAR measurement, on the highest
measured output power channel in the initial test configuration, for each frequency band. Additional output power
measurements were not deemed necessary

Page 13 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

10. Measured and Reported (Scaled) SAR Results
SAR Test Reduction criteria are as follows:

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.

Page 14 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

10.1. Wi-Fi (DTS Band)
Power (dBm) 10-g SAR (W/kg)
Frequency Dist. Freq. Plot
Antenna Mode Test Position Ch #. Tune-up
Band (mm) (MHz) Meas. Meas. Scaled No.
limit
1 2412.0 19.5 18.3 0.853 1.124 1
802.11b
SISO (Chain 0) 0 Top 6 2437.0 19.5 18.2 0.767 1.035
1 Mbps
11 2462.0 19.5 18.4 0.777 1.001
2.4GHz
1 2412.0 19.5 18.2 0.807 1.089
802.11b
SISO (Chain 1) 0 Top 6 2437.0 19.5 18.3 0.873 1.151 2
1 Mbps
11 2462.0 19.5 18.5 0.839 1.056

10.2. Standalone SAR Test Exclusion Considerations
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 Min. test SAR test
RF Air RF Exposure Frequency Pow er separation exclusion
interface Conditions (GHz)
(dBm) (mW) distance (mm) Result*
BLE Extremity 2.480 7.5 6 11 0.9

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

Page 15 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Report No.: 11641559-S1V2 Issue Date: 7/19/2017

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.
First Second Third
Frequency Repeated Highest Repeated Repeated Repeated
Band Air Interface RF Exposure Conditions Test Position SAR Measured Measured Largest to Measured Largest to Measured
(GHz) (Yes/No) SAR (W/kg) SAR Smallest SAR Smallest SAR
(W/kg) SAR Ratio (W/kg) SAR Ratio (W/kg)
2.4 Wi-Fi 802.11b/g/n Extremity Top No 0.873 N/A N/A N/A N/A N/A

12. Simultaneous Transmission SAR Analysis
Simultaneous SAR is not supported for this device.

Page 16 of 17
UL Verification Services Inc. Doc. No.: 1.0
This report shall not be reproduced without the written approval of UL Verification Services Inc.

Document Created: 2017-07-19 14:37:14
Document Modified: 2017-07-19 14:37:14

© 2025 FCC.report
This site is not affiliated with or endorsed by the FCC