DTTAB-116-1 2in1 tablet pc Test Report SAR Report SHENZHEN BMORN TECHNOLOGY CO.,LTD.

SHENZHEN BMORN TECHNOLOGY CO.,LTD. 2in1 tablet pc

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Page 1 of 62
Report No.: NTEK-2017NT08075526HF
FCC SAR EVALUATION REPORT
In accordance with the requirements of
FCC 47 CFR Part 2(2.1093), ANSI/IEEE C95.1-1992 and
IEEE Std 1528-2013
Product Name: 2in1 tablet pc
Trademark: N/A
Model Name: DTTAB2in1-116-1
Serial Model: W1549
Report No.: NTEK-2017NT08075526HF
FCC ID: 2ACPR-DTTAB-116-1
Prepared for
SHENZHEN BMORN TECHNOLOGY CO.,LTD.
5/F, Hengfang Verteran Industrial Park, Xingye Road, Xixiang, Bao'an, Shenzhen, Guangdong, China
Prepared by
Shenzhen NTEK Testing Technology Co., Ltd.
1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street, Bao’an District,
Shenzhen 518126 P.R.China.
Tel.: +86-755-6115 9388
Fax.: +86-755-6115 6599
Website: http://www.ntek.org.cn
Page 2 of 62
Report No.: NTEK-2017NT08075526HF
TEST RESULT CERTIFICATION
Applicant’s name.................. : SHENZHEN BMORN TECHNOLOGY CO.,LTD.
Address .................................. :
5/F, Hengfang Verteran Industrial Park, Xingye Road, Xixiang, Bao'an,
Shenzhen, Guangdong, China
Manufacturer's Name ........... : SHENZHEN BMORN TECHNOLOGY CO.,LTD.
Address .................................. :
5/F, Hengfang Verteran Industrial Park, Xingye Road, Xixiang, Bao'an,
Shenzhen, Guangdong, China
Product description
Product name ......................... : 2in1 tablet pc
Trademark ............................ : N/A
Model and/or type reference : DTTAB2in1-116-1
Serial Model ........................... : W1549
FCC 47 CFR Part 2(2.1093)
Standards .............................. :
ANSI/IEEE C95.1-1992
IEEE Std 1528-2013
Published RF exposure KDB procedures
This device described above has been tested by Shenzhen NTEK. In accordance with the measurement
methods and procedures specified in IEEE Std 1528-2013 and KDB 865664 D01. Testing has shown that this
device is capable of compliance with localized specific absorption rate (SAR) specified in FCC 47 CFR Part
2(2.1093) and ANSI/IEEE C95.1-1992. The test results in this report apply only to the tested sample of the
stated device/equipment. Other similar device/equipment will not necessarily produce the same results due to
production tolerance and measurement uncertainties.
This report shall not be reproduced except in full, without the written approval of Shenzhen NTEK, this
document may be altered or revised by Shenzhen NTEK, personal only, and shall be noted in the revision of the
document.
Date of Test
Date (s) of performance of tests ............. : Aug. 12, 2017 ~ Aug. 12, 2017
Date of Issue ........................................... : Aug. 30, 2017
Test Result ............................................... : Pass
Prepared By
(Test Engineer)
(Cheng Jiawen)
Approved By
(Lab Manager)
(Sam Chen)
Page 3 of 62
Report No.: NTEK-2017NT08075526HF
※ ※ Revision History ※ ※
REV.
DESCRIPTION
ISSUED DATE
REMARK
Rev.1.0
Initial Test Report Release
Aug. 30, 2017
Cheng Jiawen
Page 4 of 62
Report No.: NTEK-2017NT08075526HF
TABLE OF CONTENTS
1. General Information......................................................................................................... 6
1.1. RF exposure limits ................................................................................................ 6
1.2. Statement of Compliance .................................................................................... 7
1.3. EUT Description ................................................................................................... 8
1.4. Test specification(s) .............................................................................................. 8
1.5. Ambient Condition............................................................................................... 8
2. SAR Measurement System ............................................................................................... 9
2.1. SATIMO SAR Measurement Set‐up Diagram ........................................................ 9
2.2. Robot ................................................................................................................. 10
2.3. E‐Field Probe ...................................................................................................... 11
2.3.1. E‐Field Probe Calibration ............................................................................. 11
2.4. SAM phantoms .................................................................................................. 12
2.4.1. Technical Data .............................................................................................. 13
2.5. Device Holder .................................................................................................... 14
2.6. Test Equipment List ............................................................................................ 15
3. SAR Measurement Procedures ...................................................................................... 17
3.1. Power Reference ............................................................................................... 17
3.2. Area scan & Zoom scan ...................................................................................... 17
3.3. Description of interpolation/extrapolation scheme .......................................... 19
3.4. Volumetric Scan ................................................................................................. 19
3.5. Power Drift ........................................................................................................ 19
4. System Verification Procedure ...................................................................................... 20
4.1. Tissue Verification ............................................................................................. 20
4.1.1. Tissue Dielectric Parameter Check Results .................................................. 21
4.2. System Verification Procedure .......................................................................... 22
4.2.1. System Verification Results .......................................................................... 23
5. SAR Measurement variability and uncertainty .............................................................. 24
5.1. SAR measurement variability ............................................................................. 24
5.2. SAR measurement uncertainty .......................................................................... 24
6. RF Exposure Positions .................................................................................................... 25
6.1. Tablet host platform exposure conditions......................................................... 25
7. RF Output Power............................................................................................................ 25
7.1. Maximum Tune‐up Limit .................................................................................... 25
7.2. WLAN & BT Output Power ................................................................................. 26
7.2.1. Output Power Results Of WLAN 2.4G .......................................................... 26
7.2.2. Output Power Results Of BT......................................................................... 26
8. Antenna Location ........................................................................................................... 27
9. Standalone SAR test exclusion and Simultaneous transmission SAR estimated ............ 29
10. SAR Results .................................................................................................................... 30
10.1. SAR measurement results of WLAN 2.4G ........................................................ 30
Page 5 of 62
11.
12.
13.
14.
Report No.: NTEK-2017NT08075526HF
10.2. Simultaneous Transmission Possibilities .......................................................... 30
Appendix A. Photo documentation................................................................................ 31
Appendix B. System Check Plots .................................................................................... 36
Appendix C. Plots of High SAR Measurement ................................................................ 38
Appendix D. Calibration Certificate................................................................................ 40
Page 6 of 62
Report No.: NTEK-2017NT08075526HF
1. General Information
1.1. RF exposure limits
(A).Limits for Occupational/Controlled Exposure (W/kg)
Whole-Body Partial-Body Hands, Wrists, Feet and Ankles
0.4
8.0
20.0
(B).Limits for General Population/Uncontrolled Exposure (W/kg)
Whole-Body Partial-Body Hands, Wrists, Feet and Ankles
0.08
1.6
4.0
NOTE: Whole-Body SAR is averaged over the entire body, partial-body SAR is averaged over any 1
gram of tissue defined as a tissue volume in the shape of a cube. SAR for hands, wrists, feet and
ankles is averaged over any 10 grams of tissue defined as a tissue volume in the shape of a cube.
Occupational/Controlled Environments:
Are defined as locations where there is exposure that may be incurred by people who are aware of the
potential for exposure, (i.e. as a result of employment or occupation).
General Population/Uncontrolled Environments:
Are defined as locations where there is the exposure of individuals who have no knowledge or control
of their exposure.
NOTE
HEAD AND TRUNK LIMIT
1.6 W/kg
APPLIED TO THIS EUT
Page 7 of 62
Report No.: NTEK-2017NT08075526HF
1.2. Statement of Compliance
The maximum results of Specific Absorption Rate (SAR) found during testing for DTTAB2in1-116-1 are as
follows.
Max Reported SAR Value(W/kg)
Band
1-g Body
(Separation distance of 0mm)
WLAN 2.4G
0.974
NOTE: This device is in compliance with Specific Absorption Rate (SAR) for general population/uncontrolled
exposure limits (1.6 W/kg) specified in FCC 47 CFR Part 2(2.1093) and ANSI/IEEE C95.1-1992, and had been
tested in accordance with the measurement methods and procedures specified in IEEE Std 1528-2013 & KDB
865664 D01.
Page 8 of 62
1.3.
Report No.: NTEK-2017NT08075526HF
EUT Description
Device Information
Product Name
2in1 tablet pc
Trademark
N/A
Model Name
DTTAB2in1-116-1
Serial Model
W1549
FCC ID
Device Phase
2ACPR-DTTAB-116-1
Identical Prototype
Exposure Category
General population / Uncontrolled environment
Antenna
FPCB Antenna
Battery Information
DC 3.8V, 8000mAh
Device Operating Configurations
Supporting Mode(s)
WLAN 2.4G, BT
Test Modulation
Operating Frequency
Range(s)
WLAN(DSSS/OFDM)
Band
Tx (MHz)
WLAN 2.4G
Rx (MHz)
2412-2462
BT
Test Channels (low-mid-high) 1-3-6-9-11(WLAN 2.4G)
1.4. Test specification(s)
FCC 47 CFR Part 2(2.1093)
ANSI/IEEE C95.1-1992
IEEE Std 1528-2013
KDB 865664 D01 SAR measurement 100 MHz to 6 GHz
KDB 865664 D02 RF Exposure Reporting
KDB 447498 D01 General RF Exposure Guidance
KDB 248227 D01 802.11 Wi-Fi SAR
KDB 616217 D04 SAR for laptop and tablets
1.5. Ambient Condition
Ambient temperature
20°C – 24°C
Relative Humidity
30% – 70%
2402-2480
Page 9 of 62
Report No.: NTEK-2017NT08075526HF
2. SAR Measurement System
2.1. SATIMO SAR Measurement Set-up Diagram
These measurements were performed with the automated near-field scanning system OPENSAR from
SATIMO. The system is based on a high precision robot (working range: 901 mm), which positions the probes
with a positional repeatability of better than ±0.03 mm. The SAR measurements were conducted with
dosimetric probe (manufactured by SATIMO), designed in the classical triangular configuration and optimized
for dosimetric evaluation.
The first step of the field measurement is the evaluation of the voltages induced on the probe by the device
under test. Probe diode detectors are nonlinear. Below the diode compression point, the output voltage is
proportional to the square of the applied E-field; above the diode compression point, it is linear to the applied
E-field. The compression point depends on the diode, and a calibration procedure is necessary for each sensor
of the probe.
The Keithley multimeter reads the voltage of each sensor and send these three values to the PC. The
corresponding E field value is calculated using the probe calibration factors, which are stored in the working
directory. This evaluation includes linearization of the diode characteristics. The field calculation is done
separately for each sensor. Each component of the E field is displayed on the ''Dipole Area Scan Interface'' and
the total E field is displayed on the ''3D Interface''
Page 10 of 62
Report No.: NTEK-2017NT08075526HF
2.2. Robot
The SATIMO SAR system uses the high precision robots from KUKA. For the 6-axis controller system, the
robot controller version (KUKA) from KUKA is used. The KUKA robot series have many features that are
important for our application:
•
High precision (repeatability ±0.03 mm)
•
High reliability (industrial design)
•
Jerk-free straight movements
•
Low ELF interference (the closed metallic construction
shields against motor control fields)
Page 11 of 62
Report No.: NTEK-2017NT08075526HF
2.3. E-Field Probe
This E-field detection probe is composed of three orthogonal dipoles linked to special Schottky diodes with low
detection thresholds. The probe allows the measurement of electric fields in liquids such as the one defined in
the IEEE and CENELEC standards.
For the measurements the Specific Dosimetric E-Field Probe SN 08/16 EPGO287 with following specifications
is used
- Dynamic range: 0.01-100 W/kg
- Tip Diameter : 2.5 mm
- Distance between probe tip and sensor center: 1 mm
- Distance between sensor center and the inner phantom surface: 4 mm (repeatability better than ±1 mm).
- Probe linearity: ±0.08 dB
- Axial isotropy: <0.25 dB
- Hemispherical Isotropy: <0.50 dB
- Calibration range: 450MHz to 6000MHz for head & body simulating liquid.
- Lower detection limit: 8mW/kg
Angle between probe axis (evaluation axis) and surface normal line: less than 30°.
2.3.1.
E-Field Probe Calibration
Each probe needs to be calibrated according to a dosimetric assessment procedure with accuracy better than
±10%. The spherical isotropy shall be evaluated and within ±0.25dB. The sensitivity parameters (Norm X, Norm
Y, and Norm Z), the diode compression parameter (DCP) and the conversion factor (Conv F) of the probe are
tested. The calibration data can be referred to appendix D of this report.
Page 12 of 62
Report No.: NTEK-2017NT08075526HF
2.4. SAM phantoms
Photo of SAM phantom SN 16/15 SAM119
The SAM phantom is used to measure the SAR relative to people exposed to electro-magnetic field radiated by
mobile phones.
Page 13 of 62
2.4.1.
Report No.: NTEK-2017NT08075526HF
Technical Data
Serial
Number
Shell thickness
Filling
volume
Positionner
Material
Dimensions
Length:1000 mm
SN 16/15
SAM119
2 mm ±0.2 mm
Gelcoat with
27 liters Width:500 mm
fiberglass
Height:200 mm
Serial Number
SN 16/15 SAM119
Left Head
Permittivity
Loss
Tangent
3.4
0.02
Right Head
Flat Part
2.02
2.08
2.09
2.05
2.06
2.06
2.07
2.07
2.08
2.08
2.08
2.10
2.05
2.07
2.10
2.05
2.05
2.07
2.07
2.06
2.07
2.08
2.06
The test, based on ultrasonic system, allows measuring the thickness with an accuracy of 10 μm.
Page 14 of 62
Report No.: NTEK-2017NT08075526HF
2.5. Device Holder
The positioning system allows obtaining cheek and tilting position with a very good accuracy. In compliance
with CENELEC, the tilt angle uncertainty is lower than 1 degree.
Serial Number
Holder Material
Permittivity
Loss Tangent
SN 16/15 MSH100
Delrin
3.7
0.005
Page 15 of 62
Report No.: NTEK-2017NT08075526HF
2.6. Test Equipment List
This table gives a complete overview of the SAR measurement equipment.
Devices used during the test described are marked
Manufacturer
Name of
Equipment
Type/Model
Serial Number
SN 08/16 EPGO287
Calibration
Last Cal.
Due Date
Sep. 08,
Sep. 07,
2016
2017
SN 03/15 DIP
Apr. 06,
Apr. 05,
0G450-345
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
0G750-355
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
0G835-347
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
0G900-348
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
1G800-349
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
1G900-350
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
2G000-351
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
2G450-352
2015
2018
SN 03/15 DIP
Apr. 06,
Apr. 05,
2G600-356
2015
2018
Apr. 06,
Apr. 05,
2015
2018
MVG
E FIELD PROBE
SSE2
MVG
450 MHz Dipole
SID450
MVG
750 MHz Dipole
SID750
MVG
835 MHz Dipole
SID835
MVG
900 MHz Dipole
SID900
MVG
1800 MHz Dipole
SID1800
MVG
1900 MHz Dipole
SID1900
MVG
2000 MHz Dipole
SID2000
MVG
2450 MHz Dipole
SID2450
MVG
2600 MHz Dipole
SID2600
MVG
5000 MHz Dipole
SWG5500
SN 13/14 WGA 33
SCLMP
SN 21/15 OCPG 72
NCR
NCR
MVG
Liquid
measurement Kit
MVG
Power Amplifier
N.A
AMPLISAR_28/14_003
NCR
NCR
KEITHLEY
Millivoltmeter
2000
4072790
NCR
NCR
CMU200
117858
Aug. 07,
Aug. 06,
2017
2018
CMW500
103917
Oct. 29,
Oct. 28,
2016
2017
8753D
3410J01136
Aug. 07,
Aug. 06,
2017
2018
Universal radio
R&S
communication
tester
Wideband radio
R&S
communication
tester
HP
Network Analyzer
Page 16 of 62
Agilent
PSG Analog Signal
Generator
Report No.: NTEK-2017NT08075526HF
E8257D
MY51110112
Agilent
Power meter
E4419B
MY45102538
Agilent
Power sensor
E9301A
MY41495644
Agilent
Power sensor
E9301A
US39212148
MCLI/USA
Directional Coupler
CB11-20
0D2L51502
Aug. 07,
Aug. 06,
2017
2018
Aug. 07,
Aug. 06,
2017
2018
Aug. 07,
Aug. 06,
2017
2018
Aug. 07,
Aug. 06,
2017
2018
Aug. 07,
Aug. 06,
2017
2018
Page 17 of 62
Report No.: NTEK-2017NT08075526HF
3. SAR Measurement Procedures
The measurement procedures are as follows:

(a) For WWAN power measurement, use base station simulator to configure EUT WWAN transmission in
conducted connection with RF cable, at maximum power in each supported wireless interface and frequency
band.
(b) Read the WWAN RF power level from the base station simulator.
(c)
For WLAN/BT power measurement, use engineering software to configure EUT WLAN/BT continuously
transmission, at maximum RF power in each supported wireless interface and frequency band.
(d) Connect EUT RF port through RF cable to the power meter, and measure WLAN/BT output power.

(a) Use base station simulator to configure EUT WWAN transmission in radiated connection, and engineering
software to configure EUT WLAN/BT continuously transmission, at maximum RF power, in the highest power
channel.
(b) Place the EUT in the positions as Appendix A demonstrates.
(c)
Set scan area, grid size and other setting on the OPENSAR software.
(d) Measure SAR results for the highest power channel on each testing position.
(e) Find out the largest SAR result on these testing positions of each band.
(f)
Measure SAR results for other channels in worst SAR testing position if the reported SAR of highest power
channel is larger than 0.8 W/kg.
According to the test standard, the recommended procedure for assessing the peak spatial-average SAR value
consists of the following steps:
(a) Power reference measurement
(b) Area scan
(c)
Zoom scan
(d) Power drift measurement
3.1. Power Reference
The Power Reference Measurement and Power Drift Measurements are for monitoring the power drift of the
device under test in the batch process. The minimum distance of probe sensors to surface determines the
closest measurement point to phantom surface. This distance cannot be smaller than the distance of sensor
calibration points to probe tip as defined in the probe properties.
3.2. Area scan & Zoom scan
The area scan is a 2D scan to find the hot spot location on the DUT. The zoom scan is a 3D scan above the hot
spot to calculate the 1g and 10g SAR value.
Measurement of the SAR distribution with a grid of 8 to 16 mm * 8 to 16 mm and a constant distance to the
inner surface of the phantom. Since the sensors cannot directly measure at the inner phantom surface, the
Page 18 of 62
Report No.: NTEK-2017NT08075526HF
values between the sensors and the inner phantom surface are extrapolated. With these values the area of the
maximum SAR is calculated by an interpolation scheme. Around this point, a cube of 30 * 30 *30 mm or 32 * 32
* 32 mm is assessed by measuring 5 or 8 * 5 or 8 * 4 or 5 mm. With these data, the peak spatial-average SAR
value can be calculated.
From the scanned SAR distribution, identify the position of the maximum SAR value, in addition identify the
positions of any local maxima with SAR values within 2 dB of the maximum value that will not be within the
zoom scan of other peaks; additional peaks shall be measured only when the primary peak is within 2 dB of the
SAR compliance limit (e.g., 1 W/kg for 1,6 W/kg 1 g limit, or 1,26 W/kg for 2 W/kg, 10 g limit).
Area scan & Zoom scan scan parameters extracted from FCC KDB 865664 D01 SAR measurement 100 MHz
to 6 GHz.
Page 19 of 62
Report No.: NTEK-2017NT08075526HF
3.3. Description of interpolation/extrapolation scheme
The local SAR inside the phantom is measured using small dipole sensing elements inside a probe body. The
probe tip must not be in contact with the phantom surface in order to minimise measurements errors, but the
highest local SAR will occur at the surface of the phantom.
An extrapolation is using to determinate this highest local SAR values. The extrapolation is based on a
fourth-order least-square polynomial fit of measured data. The local SAR value is then extrapolated from the
liquid surface with a 1 mm step.
The measurements have to be performed over a limited time (due to the duration of the battery) so the step of
measurement is high. It could vary between 5 and 8 mm. To obtain an accurate assessment of the maximum
SAR averaged over 10 grams and 1 gram requires a very fine resolution in the three dimensional scanned data
array.
3.4. Volumetric Scan
The volumetric scan consists to a full 3D scan over a specific area. This 3D scan is useful form multi Tx SAR
measurement. Indeed, it is possible with OpenSAR to add, point by point, several volumetric scan to calculate
the SAR value of the combined measurement as it is define in the standard IEEE1528 and IEC62209.
3.5. Power Drift
All SAR testing is under the EUT install full charged battery and transmit maximum output power. In OpenSAR
measurement software, the power reference measurement and power drift measurement procedures are used
for monitoring the power drift of EUT during SAR test. Both these procedures measure the field at a specified
reference position before and after the SAR testing. The software will calculate the field difference in V/m. If the
power drifts more than ±5%, the SAR will be retested.
Page 20 of 62
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4. System Verification Procedure
4.1. Tissue Verification
The following tissue formulations are provided for reference only as some of the parameters have not been
thoroughly verified. The composition of ingredients may be modified accordingly to achieve the desired target
tissue parameters required for routine SAR evaluation.
Head Tissue
Ingredients (% of weight)
Frequency Band (MHz)
750
835
900
1800
1900
2000
2450
2600
Water
34.40
34.40
34.40
55.36
55.36
57.87
57.87
57.87
NaCl
0.79
0.79
0.79
0.35
0.35
0.16
0.16
0.16
1,2-Propanediol
64.81
64.81
64.81
0.00
0.00
0.00
0.00
0.00
Triton X-100
0.00
0.00
0.00
30.45
30.45
19.97
19.97
19.97
DGBE
0.00
0.00
0.00
13.84
13.84
22.00
22.00
22.00
Body Tissue
Ingredients (% of weight)
Frequency Band (MHz)
750
835
900
1800
1900
2000
2450
2600
Water
50.30
50.30
50.30
69.91
69.91
71.88
71.88
71.88
NaCl
0.60
0.60
0.60
0.13
0.13
0.16
0.16
0.16
1,2-Propanediol
49.10
49.10
49.10
0.00
0.00
0.00
0.00
0.00
Triton X-100
0.00
0.00
0.00
9.99
9.99
19.97
19.97
19.97
DGBE
0.00
0.00
0.00
19.97
19.97
7.99
7.99
7.99
Page 21 of 62
4.1.1.
Report No.: NTEK-2017NT08075526HF
Tissue Dielectric Parameter Check Results
The simulating liquids should be checked at the beginning of a series of SAR measurements to determine of the
dielectric parameter are within the tolerances of the specified target values. The measured conductivity and
relative permittivity should be within ±5% of the target values.
Measured
Tissue Type Frequency
(MHz)
Target Tissue
εr (±5%)
σ (S/m) (±5%)
52.70
1.95
Measured Tissue
εr
σ (S/m)
Liquid
Temp.
Test Date
52.80
1.97
21.5 °C Aug. 12, 2017
(50.07~55.33)
(1.85~2.04)
NOTE: The dielectric parameters of the tissue-equivalent liquid should be measured under similar ambient
Body 2450
2450
conditions and within 2 °C of the conditions expected during the SAR evaluation to satisfy protocol
requirements.
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4.2. System Verification Procedure
The system verification is performed for verifying the accuracy of the complete measurement system and
performance of the software. The dipole is connected to the signal source consisting of signal generator and
amplifier via a directional coupler, N-connector cable and adaption to SMA. It is fed with a power of 100mW
(below 5GHz) or 100mW (above 5GHz). To adjust this power a power meter is used. The power sensor is
connected to the cable before the system verification to measure the power at this point and do adjustments at
the signal generator. At the outputs of the directional coupler both return loss as well as forward power are
controlled during the system verification to make sure that emitted power at the dipole is kept constant. This can
also be checked by the power drift measurement after the test (result on plot).
The system verification is shown as below picture:
Page 23 of 62
4.2.1.
Report No.: NTEK-2017NT08075526HF
System Verification Results
Comparing to the original SAR value provided by SATIMO, the verification data should be within its specification
of ±10%. Below table shows the target SAR and measured SAR after normalized to 1W input power. The table
below indicates the system performance verification can meet the variation criterion and the plots can be
referred to Appendix B of this report.
Target SAR (1W)
Measured SAR
(±10%)
(Normalized to 1W)
System Verification
2450MHz Body
1-g (W/Kg)
10-g (W/Kg)
49.32
22.89
(44.39~54.25)
(20.60~25.17)
Liquid Temp.
Test Date
21.5 °C
Aug. 12, 2017
1-g (W/Kg) 10-g (W/Kg)
47.51
22.01
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5. SAR Measurement variability and uncertainty
5.1. SAR measurement variability
Per KDB865664 D01 SAR measurement 100 MHz to 6 GHz, SAR measurement variability must be assessed
for each frequency band, which is determined by the SAR probe calibration point and tissue-equivalent medium
used for the device measurements. The 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 < 0.80 W/kg; steps 2)
through 4) do not apply.
2)
When the original highest measured SAR is ≥ 0.80 W/kg, 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 W/kg (~ 10%
from the 1-g SAR limit).
4)
Perform a third repeated measurement only if the original, first or second repeated measurement is ≥1.5
W/kg and the ratio of largest to smallest SAR for the original, first and second repeated measurements is >
1.20.
5.2. SAR measurement uncertainty
Per KDB865664 D01 SAR Measurement 100 MHz to 6 GHz, when the highest measured 1-g SAR within a
frequency band is < 1.5 W/kg, the extensive SAR measurement uncertainty analysis described in IEEE Std
1528-2013 is not required in SAR reports submitted for equipment approval. The equivalent ratio (1.5/1.6) is
applied to extremity and occupational exposure conditions.
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6. RF Exposure Positions
6.1. Tablet host platform exposure conditions
Per KDB616217 D04, When the modular approach is used, transmitters and modules must be initially tested for
standalone operations in generic host conditions according to the following minimum test separation distance
and antenna installation requirements for incorporation in the tablet platform. The separation distance required
for incorporation in qualified hosts is described in KDB 447498; item 5) of section 4.1 and item 1) of section
5.2.2 etc.
The antennas embedded in tablets are typically ≤ 5mm from the outer housing. The required antenna to user
test separation distance is a “not to exceed test” distance required to apply the modular approach. Instead of
the typical zero gap tablet edge test requirement between the edge of a tablet and the user, when an antenna
has been tested at ≤ 5 mm according to the modular approach it can be incorporated into tablets with at least
twice the tested distance from the outer housing of the tablet edge; otherwise, the tablet edge zero gap test
requirement applies. When the dedicated host approach is applied, the back surface and edges of the tablet
should be tested for SAR compliance with the tablet touching the phantom.
7. RF Output Power
7.1. Maximum Tune-up Limit
The Tune-up
Band
Maximum Power
Mode
(Customer
Range
Measured Output Maximum
Power(dBm)
Declared)(dBm)
802.11b
12±1
11~13
12.9
WLAN
802.11g
9±1
8~10
9.6
2.4G
802.11n(HT20)
9±1
8~10
9.6
802.11n(HT40)
9±1
8~10
8.7
1M
-1±1
-2~0
-0.75
2M
0±1
-1~1
0.68
3M
0±1
-1~1
0.86
0CH
5±1
4~6
4.95
19CH
5±1
4~6
5.22
39CH
6±1
5~7
6.08
BR+EDR
BT
BLE
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Report No.: NTEK-2017NT08075526HF
7.2. WLAN & BT Output Power
7.2.1.
Output Power Results Of WLAN 2.4G
The output power of WLAN 2.4G is as following:
Mode
Channel
Frequency (MHz)
Tune-up
Output Power (dBm)
2412
13.00
12.8
2437
13.00
12.9
11
2462
13.00
12.8
2412
10.00
9.5
2437
10.00
9.6
11
2462
10.00
9.3
2412
10.00
9.6
2437
10.00
9.6
11
2462
10.00
9.4
2422
10.00
8.7
2437
10.00
8.6
2452
10.00
8.7
802.11b
802.11g
802.11n(HT20)
802.11n(HT40)
7.2.2.
Output Power Results Of BT
The output power of BT is as following:
Data Rates
1M
BR+EDR
2M
3M
BLE
Channel
Tune-up
Output Power (dBm)
0.00
-1.88
39
0.00
-1.04
78
0.00
-0.75
1.00
-0.41
39
1.00
0.16
78
1.00
0.68
1.00
-0.18
39
1.00
0.05
78
1.00
0.86
Channel
Tune-up
Output Power (dBm)
6.00
4.95
19
6.00
5.22
39
7.00
6.08
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Report No.: NTEK-2017NT08075526HF
8. Antenna Location
Top Side
293mm
74mm
184mm
BT / WIFI ANT
184mm
346mm
Right Side
170mm
Left Side
Back Side
Back View
Bottom Side
Distance of the Antenna to the EUT surface/edge
Antennas
Front Side
Back Side
Left Side
Right Side
Top Side
Bottom Side
BT/WLAN
1mm
7mm
74mm
184mm
1m
170mm
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Positions for SAR tests
Test separation distances ≤ 50 mm
Exposure Positions
Front Side
Back Side
Top Side
Tune-up Maximum power of WLAN 2.4G
13dBm
Antenna to user(mm)
SAR exclusion threshold
SAR testing required?
YES
Antenna to user(mm)
SAR exclusion threshold
SAR testing required?
YES
Antenna to user(mm)
SAR exclusion threshold
SAR testing required?
NOTE: Refer to section 4.3.1 of KDB 447498 D01.
YES
Positions for SAR tests
Test separation distances ˃ 50 mm
Exposure Positions
Left Side
Right Side
Bottom Side
Tune-up Maximum power of WLAN 2.4G
13dBm
20mW
Antenna to user(mm)
74
SAR exclusion threshold(mW)
336
SAR testing required?
NO
Antenna to user(mm)
184
SAR exclusion threshold(mW)
1436
SAR testing required?
NO
Antenna to user(mm)
170
SAR exclusion threshold(mW)
1296
SAR testing required?
NOTE: Refer to section 4.3.1 of KDB 447498 D01.
NO
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9. Standalone SAR test exclusion and Simultaneous transmission SAR estimated
Refer to FCC KDB 447498D01 Appendix A, the 1-g SAR 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
When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test
exclusion.
Mode
Pmax (dBm)
Pmax (mW)
BT
Distance
1-g SAR Test Exclusion Threshold
SAR test
(mm)
(mW)
exclusion
10
Yes
When standalone SAR test exclusion applies 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 ≤ 50mm, where x = 7.5 for 1-g SAR and x = 18.75 for 10-g SAR.
When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test
exclusion.
Mode
Position
Pmax (dBm)
Pmax (mW)
Distance (mm)
f (GHz)
Estimated SAR (W/Kg)
BT
Body
2.480
7.5
0.210
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10. SAR Results
10.1.
SAR measurement results of WLAN 2.4G
Test Position of Body
with 0mm
Test
channel
/Freq.
Test
Mode
SAR Value
Power
Conducted
Tune-up
Scaled
(W/kg)
Drift
power
power
SAR 1g
1g
10g
(±5%)
(dBm)
(dBm)
(W/Kg)
Front Side
6/2437
802.11b
0.919
0.349
4.64
12.90
13.00
0.940
Back Side
6/2437
802.11b
0.352
0.139
1.08
12.90
13.00
0.360
Top Side
6/2437
802.11b
0.218
0.095
-1.25
12.90
13.00
0.223
Front Side
1/2412
802.11b
0.852
0.324
1.19
12.80
13.00
0.892
Front Side
11/2462
802.11b
0.930
0.351
1.63
12.80
13.00
0.974
Front Side Repeated
11/2462
802.11b
0.911
0.344
0.12
12.80
13.00
0.954
10.2.
Simultaneous Transmission Possibilities
WLAN2.4G and BT share the same antenna, and cannot transmit simultaneously.
Page 31 of 62
11. Appendix A. Photo documentation
Table of contents
Test Facility
Product Photo
Test Positions
Liquid depth
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Test Facility
Measurement System SATIMO
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Product Photo
Front View
Back View
Reference Line
Keyboard
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Test Positions
Front Side
Back Side
(Separation distance of 0mm)
(Separation distance of 0mm)
0mm
0mm
17mm
Top Side
(Separation distance of 0mm)
N/A
0mm
N/A
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Liquid depth
Body Position with 2450MHz liquid depth (15.2cm)
N/A
N/A
Page 36 of 62
12. Appendix B. System Check Plots
Table of contents
System Performance Check - SID2450-Body
Report No.: NTEK-2017NT08075526HF
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System Performance Check - SID2450MHz
Date of measurement:
Aug. 12, 2017
Communication System: CW; Frequency: 2450.00MHz; Duty Cycle:
1:1.00
2.10
Relative permittivity (real part): 52.80; Conductivity (S/m): 1.97;
Dipole
dx=12mm dy=12mm, h=5.00mm
7x7x7, dx=5mm dy=5mm dz=5mm, h=5.00mm
Signal:
ConvF:
Liquid Parameters:
Device Position:
Area Scan:
Zoom Scan:
Z (mm)
SAR
(W/Kg)
Surface SAR
Volume SAR
3D screen shot
Hot spot position
Maximum location: X=5.00, Y=1.00
SAR Peak: 7.90 W/kg
SAR 1g (W/Kg)
4.751
SAR 10g (W/Kg)
2.201
Power Drift (±5%):
-0.54
0.00
4.00
9.00
14.00
19.00
24.00
7.6640
4.8045
2.5910
1.4025
0.7740
0.4229
29.00
0.2343
Page 38 of 62
13. Appendix C. Plots of High SAR Measurement
Table of contents
WLAN 2.4G Body
Report No.: NTEK-2017NT08075526HF
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Report No.: NTEK-2017NT08075526HF
WLAN 2.4G_802.11b_Ch11_Front Side_0mm
Date of measurement:
Aug. 12, 2017
Communication System: WLAN 802.11a/b/g/n/ac; Frequency:
2462.00MHz; Duty Cycle: 1:1.00
2.10
Relative permittivity (real part): 52.72; Conductivity (S/m): 1.99;
Body
dx=12mm dy=12mm, h=5.00mm
7x7x7, dx=5mm dy=5mm dz=5mm, h=5.00mm
Signal:
ConvF:
Liquid Parameters:
Device Position:
Area Scan:
Zoom Scan:
Z (mm)
SAR
(W/Kg)
Surface SAR
Volume SAR
3D screen shot
Hot spot position
Maximum location: X=-29.00, Y=-44.00
SAR Peak: 1.93 W/kg
SAR 1g (W/Kg)
0.930
SAR 10g (W/Kg)
0.351
Power Drift (±5%):
1.63
0.00
4.00
9.00
14.00
19.00
24.00
1.9503
1.0583
0.4429
0.1922
0.0860
0.0405
29.00
0.0199
Page 40 of 62
14. Appendix D. Calibration Certificate
Table of contents
E Field Probe - SN 08/16 EPGO287
2450 MHz Dipole - SN 03/15 DIP 2G450-352
Extended Calibration Certificate
Report No.: NTEK-2017NT08075526HF
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If dipoles are verified in return loss(<-20dB, within 20% of prior calibration for below 3GHz, and <-8dB,
within 20% of prior calibration for 5GHz to 6GHz),and in impedance (within 5 ohm of prior calibration), the
annual calibration is not necessary and the calibration interval can be extended.

Return Loss (dB)
Delta (%)
Impedance
Delta(ohm)
Date of Measurement
-30.51
52.2
Apr. 06, 2015
-30.498
0.039
52.16
0.04
Apr. 05, 2016
-30.89
1.285
52.12
0.04
Apr. 04, 2017
The return loss is <-20dB, within 20% of prior calibration; the impedance is within 5 ohm of prior calibration.
Therefore the verification result should support extended calibration.
Dipole Verification Data
_________________________________________________________________________________
END
Download: DTTAB-116-1 2in1 tablet pc Test Report SAR Report SHENZHEN BMORN TECHNOLOGY CO.,LTD.
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