NUR21W UHF RFID Radio Module NUR2-1W RF Exposure Info RF Exposure Nordic ID Oy

Nordic ID Oy UHF RFID Radio Module NUR2-1W

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SAR Compliance Test Report
Date of Report
21/12/2017
Number of
pages:
25
Client’s Contact
person:
Responsible Test
engineer:
Client:
Rauno Nikkilä
Kirsi Kyllönen
Testing
laboratory:
Verkotan Oy
Elektroniikkatie 17
90590 Oulu
Finland
NORDIC ID GROUP
Joensuunkatu 7
24100 Salo,
FINLAND
tel. +358 2 727 7700
Tested device
EXA51e, Model 818-3A
Related reports:
Testing has been
carried out in
accordance with:
47CFR §2.1093
Radiofrequency Radiation Exposure Evaluation: Portable Devices
FCC published RF exposure KDB procedures
IEEE 1528 - 2013
IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR)
in the Human Head from Wireless Communications Devices: Measurement Technique
Documentation:
The test report must always be reproduced in full; reproduction of an excerpt only is subject
to written approval of the testing laboratory
Test Results:
The EUT complies with the requirements in respect of all parameters subject to the
test.
The test results relate only to devices specified in this document
Date and
signatures:
For the contents:
21.12.2017
Digitally signed
Miia
by Miia Nurkkala
2017.12.21
Nurkkala Date:
08:47:23 +02'00'
Laboratory Manager
1 (25)
_________________________________________________________________________________________
TABLE OF CONTENTS
1.
SUMMARY OF SAR TEST REPORT ..................................................................................................... 3
1.1
TEST DETAILS .................................................................................................................................... 3
1.2
MAXIMUM RESULTS ......................................................................................................................... 3
1.2.1 Maximum Drift ............................................................................................................................. 3
1.2.2 Measurement Uncertainty ............................................................................................................ 4
2.
DESCRIPTION OF THE DEVICE UNDER TEST (DUT) ............................................................................... 5
2.1
SUPPORTED FREQUENCY BANDS AND OPERATIONAL MODES ........................................................ 5
2.2
SIMULTANEOUS TRANSMISSION POSSIBILITIES ............................................................................... 5
2.2.1 Test Exclusions............................................................................................................................. 5
3.
OUTPUT POWER...................................................................................................................................... 6
3.1
3.2
4.
MAXIMUM OUTPUT POWER ............................................................................................................. 6
TESTED CONDUCTED POWER ........................................................................................................... 6
TEST EQUIPMENT.................................................................................................................................... 7
4.1
TEST EQUIPMENT LIST ...................................................................................................................... 7
4.1.1 Isotropic E-field Probe Type EX3DV4 ............................................................................................. 8
CONSTRUCTION ........................................................................................................................................... 8
4.2
PHANTOMS ...................................................................................................................................... 8
4.3
TISSUE SIMULANTS ........................................................................................................................... 8
4.4
SYSTEM VALIDATION STATUS........................................................................................................... 9
4.5
SYSTEM CHECK ................................................................................................................................. 9
4.5.1 Tissue Simulant Verification .......................................................................................................... 9
5.
TEST PROCEDURE.................................................................................................................................. 10
5.1.1 Body-worn Configuration, 20 mm separation distance ............................................................. 10
5.2
SCAN PROCEDURES ........................................................................................................................ 10
5.3
SAR AVERAGING METHODS............................................................................................................ 10
6.
MEASUREMENT UNCERTAINTY ........................................................................................................... 11
7.
TEST RESULTS........................................................................................................................................ 12
7.1
BODY-WORN CONFIGURATION, 20 MM SEPARATION DISTANCE .................................................. 12
APPENDIX A: PHOTOS OF THE DUT ............................................................................................................ 13
APPENDIX B: SYSTEM CHECK SCAN ............................................................................................................ 16
APPENDIX C: MEASUREMENT SCAN ........................................................................................................... 17
APPENDIX D: RELEVANT PAGES FROM PROBE CALIBRATION REPORTS ................................................. 18
APPENDIX E: RELEVANT PAGES FROM DIPOLE CALIBRATION REPORTS ................................................. 22
2 (25)
_________________________________________________________________________________________
1. SUMMARY OF SAR TEST REPORT
1.1 Test Details
Equipment under Test (EUT):
Manufacturer:
NORDIC ID EXA51e, Model 818-3A
NORDIC ID GROUP
Serial Number:
K174000227, K173700219
FCC ID Number:
SCCNUR21W
Hardware Version:
BLE818_2#3_NUR2-1W_1#3
DUT Number:
22949, 22950
Battery Type used in testing:
Lithium-Ion battery pack 7000 mAh, 3.7V
Portable/ Mobile device
Portable
State of the Sample
Production sample
Product:
Testing information:
Testing Performed:
8-9.11.2017
Notes:
EXA51e, Model: 818-3A incorporates FCC certified RFID module NUR21W with FCC ID SCCNUR21W (main module) and BLE module
MDBT42Q with FCC ID SH6MDBT42Q.
Document ID:
FCC SAR Report_EXA51e_ID2470_211217.docx
Temperature C
22±2 / Controlled
Humidity RH%
20±20 / Controlled
Measurement performed by:
Kirsi Kyllönen
1.2 Maximum Results
The maximum reported* SAR value for Body-worn configuration with 20 mm separation distance is shown in
a table below. The device conforms to the requirements of the standards when the maximum reported SAR
value is less than or equal to the limit. The SAR limit specified in FCC 47 CFR part 2 (2.1093) for Body is SAR1g
1.6 W/kg,
Equipment Class
System
DSS, JBP
UHF RFID
Highest Reported* SAR1g(W/kg) in
Body-Worn Condition
1.05
Result
PASS
* Reported SAR Values are scaled to maximum theoretical output power.
1.2.1 Maximum Drift
Maximum Drift During Measurements
0.73*
*Drifts >5% have been considered in the scaling factor
3 (25)
_________________________________________________________________________________________
1.2.2 Measurement Uncertainty
Expanded Uncertainty (k=2) 95 %
23.4%
4 (25)
_________________________________________________________________________________________
2. DESCRIPTION OF THE DEVICE UNDER TEST (DUT)
The DUT is a handheld RFID reader that can be connected to a smart device via Bluetooth Low Energy.
Device Category
Portable
Exposure Environment
Uncontrolled
2.1 Supported Frequency Bands and Operational Modes
TX
Frequency
bands
Modes of Operation
Transmitter Frequency
Range (MHz)
RFID
902.75 - 927.25
Bluetooth
2402-2480
The DUT has Software controlled antenna modes: linear (horizontal & vertical), circular and proximity.
The corresponding reading distances are: linear polarization mode 10 m/33 ft, circular polarization mode 6
m/20 ft, proximity mode, read range down to 1 cm/0.4 inch. Linear mode has the largest antenna gain thus
linear horizontal mode was selected for SAR testing.
2.2 Simultaneous Transmission Possibilities
Bluetooth and RFID can transmit simultaneously.
2.2.1 Test Exclusions
Due to the low power and distance from the RFID transmitter, there should be minimal overlap of the SAR
distributions from the BT and RFID transmitters. As a result of manufactures KDB inquiry, Bluetooth test is
excluded.
5 (25)
_________________________________________________________________________________________
3. OUTPUT POWER
3.1 Maximum Output Power
From a Customer;
Upper Limit Peak Power (dBm)
Mode
CH 1
902.75
MHz
CH 25
914.75
MHz
CH 50
927.25
MHz
30
30
30
RFID
3.2 Tested conducted power
Measured Peak Power (dBm)
Mode
RFID
CH 1
902.75
GHz
CH 25
914.75
GHz
CH 50
927.25
GHz
27.3
27.47
27.01
Measured Average Power (dBm)
Mode
RFID
CH 1
902.75
GHz
CH 25
914.75
GHz
CH 50
927.25
GHz
25.1
25.0
25.2
6 (25)
_________________________________________________________________________________________
4. TEST EQUIPMENT
Dasy4 and Dasy52 near field scanning systems, manufactured by SPEAG were used for SAR testing. The test
system consists of high precision robotics system (Staubli), robot controller, computer, near-field probe,
probe alignment sensor, and a phantom containing the tissue equivalent material. The robot is a six-axis
industrial robot performing precise movements to position the probe to the location of maximum
electromagnetic field.
Figure 1 Schematic Laboratory Picture
4.1 Test Equipment List
Main used test system components are listed below. For full equipment list and calibration intervals, please
contact the testing laboratory.
Test Equipment
Model
Serial Number
Calibration Date
Calibration Expiry
DAE
DAE4
756
01/2017
01/2018
Probe
EX3DV4
3892
4/2017
04/2018
Dipole
D835V2
455
06/2017
06/2020
DASY5 Software
52.8.8.1258
na
na
na
Signal Generator
SMIQ06B
834968/023
na
na
Amplifier
AR 10S1G4A
320421
na
na
Power Reflection Meter
R&S NRT
835065/049
01/2017
01/2018
Power Sensor
NRT Z44
835374/021
01/2017
01/2018
7 (25)
_________________________________________________________________________________________
4.1.1 Isotropic E-field Probe Type EX3DV4
Construction
Symmetrical design with triangular core
Built-in shielding against static charges
PEEK enclosure material (resistant to organic solvents, e.g., DGBE)
Calibration
Calibration certificate in Appendix D
Frequency
10 MHz to >6 GHz (dosimetry); Linearity: ± 0.2 dB (30 MHz to 6 GHz)
Directivity
± 0.3 dB in HSL (rotation around probe axis)
± 0.5 dB in tissue material (rotation normal to probe axis)
Dynamic Range
Dimensions
Application
10 µW/g to > 100 mW/g, Linearity: ± 0.2 dB
Overall length: 330 mm
Tip length: 10 mm
Body diameter: 12 mm
Tip diameter: 2.5 mm
Distance from probe tip to dipole centers: 1.0 mm
General dosimetry up to 6 GHz
Compliance tests of mobile phones
Fast automatic scanning in arbitrary phantoms
4.2 Phantoms
The phantom used in SAR tests was an ELI phantom, manufactured by SPEAG. ELI phantom is
used for compliance testing of handheld and body-mounted wireless devices in the frequency
range of 30 MHz to 6 GHz. ELI is fully compatible with the IEC 62209-2 standard and all known
tissue simulating liquids
4.3 Tissue Simulants
Recommended values for the dielectric parameters of the tissue simulants are given in IEEE
1528 and FCC published RF Exposure KDB Procedures. The dielectric parameters of the used
tissue simulants were within ±10% of the recommended values in all frequencies used. A
liquid compensation algorithm was used in DASY5 with which measured peak average SAR
values were corrected for the deviation of used liquid. Depth of the tissue simulant was at
least 15.0 cm from the inner surface of the flat phantom.
Recipes
Ingredient
Body (% by weight)
835 MHz
Deionised Water
69.25
Tween 20
30.0
Salt
0.75
8 (25)
_________________________________________________________________________________________
4.4 System Validation Status
Frequency
[MHz]
835
Test
System
Verkotan
SAR-2
Dipole Type /
SN
Probe Type /
SN
Calibrated
Signal Type
D835V2 - SN:
448
EX3DV4 - SN:
3892
CW
DAE
Unit /
SN
DAE 4 /
756
Dielectric
Constant [ε]
Body tissue
simulant
Conductivity σ
[S/m] Body
tissue simulant
53.0
Validation Done
Body tissue
simulant
0.97
05/2017
4.5 System Check
Date
Tissue
Type
Tissue
Temp. [°C]
Frequency
[MHz]
Input
Power
Measured
SAR1g
[W/kg]
1 W Target
SAR1g
[W/kg]
1W
Normalized
SAR1g
[W/kg]
08.11.2017
B835
20.3
835
250mW
2.48
9.55
Deviation1g
(%)
Plot #
9.92
3.9
4.5.1 Tissue Simulant Verification
Target
Measured
Date
Tissue
Type
Tissue
Temp.
[°C]
Frequency
[MHz]
Conductivity, σ
[S/m]
Dielectric
Constant
[ε]
Conductivity
σ [S/m]
Dielectric
Constant
[ε]
Deviation σ
(%)
835
0.98
55.2
1.05
56.0
8.5
Deviatio
ε (%)
1.4
08.11.2017
B835
22
902.75
1.05
55
1.09
55.7
3.9
1.2
914.75
1.06
55
1.10
55.6
3.8
1.1
927.25
1.06
55
1.11
55.6
3.9
1.1
9 (25)
_________________________________________________________________________________________
5. TEST PROCEDURE
As a result of manufactures KDB inquiry, the test position was chosen to be the front surface
of the device toward the phantom. Pictures of the test positions are in appendix A.
The DUT was set to transmit continuously at a maximum power level using a manufacturer
specified software.
5.1.1 Body-worn Configuration, 20 mm separation distance
The DUT was placed below the flat phantom using a SPEAG device holder. The DUT was lifted
towards the phantom until correct separation distance was reached.
5.2 Scan Procedures
First, area scans were used for determination of the field distribution. Next, a zoom scan with
7x7x7 points covering a volume of 30x30x30mm was performed around the highest E-field
value to determine the averaged SAR value. Power drift was determined by measuring the
same point at the start of the area scan and again at the end of the zoom scan.
5.3 SAR Averaging Methods
The maximum SAR value is averaged over a cube of tissue using interpolation and
extrapolation.
Extrapolation routines are used to obtain SAR values between the lowest measurement points
and the inner phantom surface. The extrapolation distance is determined by the surface
detection distance and the probe sensor offset. Several measurements at different distances
are necessary for the extrapolation.
The interpolation, extrapolation and maximum search routines within Dasy47 are all based on
the modified Quadratic Shepard’s method (Robert J. Renka,” Multivariate Interpolation of
Large Sets of Scattered Data”, University of North Texas ACM Transactions on Mathematical
Software, vol. 14, no. 2, June 1988, pp. 139-148).
10 (25)
_________________________________________________________________________________________
6. MEASUREMENT UNCERTAINTY
Uncertainty Budget
IEEE 1528-2013
Error Description
Measurement System
Probe Calibration
Axial Isotropy
Hemispherical Isotropy
Boundary Effects
Linearity
System Detection Limits
Modulation Responsem
Readout Electronics
Response Time
Integration Time
RF Ambient Noise
RF Ambient Reflections
Probe Positioner
Probe Positioning
Max. SAR Eval.
Test Sample Related
Device Positioning
Device Holder
Power Drift
Power Scaling
Phantom and Setup
Phantom Uncertainty
SAR correction
Liquid Conductivity (mea.)
Liquid Permittivity (mea.)
Temp. unc. - Conductivity
Temp. unc. - Permittivity
Uncert.
value
Prob.
Dist.
Div.
(ci)
1g
(ci)
10g
Std. Unc. Std. Unc.
(1g)
(10g)
(vi)
veff
±6.0 %
±4.7 %
±9.6 %
±1.0 %
±4.7 %
±1.0 %
±2.4 %
±0.3 %
±0.8 %
±2.6 %
±3.0 %
±3.0 %
±0.4 %
±2.9 %
±2.0 %
1.73
1.73
1.73
1.73
1.73
1.73
1.73
1.73
1.73
1.73
1.73
1.73
0.7
0.7
0.7
0.7
±6.0 %
±1.9 %
±3.9 %
±0.6 %
±2.7 %
±0.6 %
±1.4 %
±0.3 %
±0.5 %
±1.5 %
±1.7 %
±1.7 %
±0.2 %
±1.7 %
±1.2 %
±6.0 %
±1.9 %
±3.9 %
±0.6 %
±2.7 %
±0.6 %
±1.4 %
±0.3 %
±0.5 %
±1.5 %
±1.7 %
±1.7 %
±0.2 %
±1.7 %
±1.2 %
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
∞
±2.9 %
±3.6 %
±5.0 %
±6 %
1.73
1.73
±2.9 %
±3.6 %
±2.9 %
±3.5 %
±2.9 %
±3.6 %
±2.9 %
± 3.5%
145
∞
∞
±6.1 %
±1.9 %
±2.5 %
±2.5 %
±3.4 %
±0.4 %
1.73
1.73
1.73
1.73
1.73
1.73
0.78
0.26
0.78
0.23
0.84
0.71
0.26
0.71
0.26
±3.5 %
±1.1 %
±1.1 %
±0.3 %
±1.5 %
±0.1 %
±3.5 %
±0.9 %
±1.0 %
±0.4 %
±1.4 %
±0.1 %
±11.7 %
±23.4 %
±11.6 %
±23.3 %
∞
∞
∞
∞
∞
∞
361
Combined Std. Uncertainty
Expanded STD Uncertainty
11 (25)
_________________________________________________________________________________________
7. TEST RESULTS
7.1 Body-Worn Configuration, 20 mm separation distance
Band
Channel
Test
Position*
Maximun
Power
[dBm]
Conducted
Power
[dBm]
Power
Drift
[dB]
Measured
SAR1g
[mW/g]
Scaling
Factor
Reported
SAR1g
[mW/g]
UHF
25
Front
surface
30.0
27.47
0.65*
1:1
0.438
2.08
0.91
UHF
Front
surface
30.0
27.3
0.5*
1:1
0.502
2.09
1.05
UHF
50
Front
surface
30.0
27.01
0.73*
1:1
0.357
2.36
0.84
Dudy Cycle
Plot #
*Drift considered in the scaling factor
*The picture of the test position is presented in appendix A.
12 (25)
_________________________________________________________________________________________
APPENDIX A: PHOTOS OF THE DUT
BLE antenna
front
surface
RFID reader. The front surface was used for SAR testing. The RFID antenna is behind the front cover.
13 (25)
_________________________________________________________________________________________
The front surface of the RFID reader.
14 (25)
_________________________________________________________________________________________
20mm
RFID reader in test position with front surface towards the phantom with 20mm separation distance.
15 (25)
_________________________________________________________________________________________
APPENDIX B: SYSTEM CHECK SCAN
Plot 1
Date/Time: 8.11.2017 14:24:40
Test Laboratory: Verkotan Oy
DUT: Dipole 835 MHz D835V2; Type: D835V2; Serial: D835V2 – SN455
Communication System: UID 0, CW (0); Communication System Band: D835 (835.0 MHz); Frequency: 835
MHz;Communication System PAR: 0 dB; PMF: 1
Medium parameters used: f = 835 MHz; σ = 1.052 S/m; εr = 55.96; ρ = 1000 kg/m3
Phantom section: Flat Section Measurement Standard: DASY5 (IEEE/IEC)
DASY Configuration:
•
•
•
•
•
Probe: EX3DV4 - SN3892; ConvF(10.13, 10.13, 10.13); Calibrated: 18.4.2017;
Sensor-Surface: 2mm (Mechanical Surface Detection), z = 31.0
Electronics: DAE4 Sn756; Calibrated: 24.1.2017
Phantom: SAR2_Phantom1_ELI; Type: QD OVA 002 AA; Serial: 29-March-2017
DASY52 52.8.8(1258); SEMCAD X 14.6.10(7373)
Configuration/d=15mm, Pin=250 mW, dist=2.0mm (EX-Probe)/Zoom Scan (7x7x7) (7x7x7)/Cube 0
Reference Value = 57.06 V/m; Power Drift = -0.03 dB Peak SAR (extrapolated) = 3.86 W/kg
SAR(1 g) = 2.48 W/kg; SAR(10 g) = 1.66 W/kg (SAR corrected for target medium)
Maximum value of SAR (measured) = 3.31 W/kg
Configuration/d=15mm, Pin=250 mW, dist=2.0mm (EX-Probe)/Area Scan (61x81x1): Interpolated grid: dx=1.500
mm, dy=1.500 mm Maximum value of SAR (interpolated) = 3.26 W/kg
16 (25)
_________________________________________________________________________________________
APPENDIX C: MEASUREMENT SCAN
Plot 2
Date/Time: 8.11.2017 16:19:54
Test Laboratory: Verkotan Oy
DUT: EXA51; Type: RFID; Serial: K174000227
Communication System: UID 0, CW (0); Communication System Band: RFID; Frequency: 902.75 MHz; Communication
System PAR: 0 dB; PMF: 1
Medium parameters used (interpolated): f = 902.75 MHz; σ = 1.092 S/m; εr = 55.674; ρ = 1000 kg/m3
Phantom section: Flat Section Measurement Standard: DASY5 (IEEE/IEC)
DASY Configuration:
•
•
•
•
•
Probe: EX3DV4 - SN3892; ConvF(10.13, 10.13, 10.13); Calibrated: 18.4.2017;
Sensor-Surface: 4mm (Mechanical Surface Detection), Sensor-Surface: 4mm (Mechanical Surface Detection
(Locations From Previous Scan Used)), z = 31.0, -4.0
Electronics: DAE4 Sn756; Calibrated: 24.1.2017
Phantom: SAR2_Phantom1_ELI; Type: QD OVA 002 AA; Serial: 29-March-2017
DASY52 52.8.8(1258); SEMCAD X 14.6.10(7373)
Configuration/RFID 20mm 2 2/Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=7.5mm, dy=7.5mm, dz=5mm
Reference Value = 23.34 V/m; Power Drift = -0.50 dB Peak SAR (extrapolated) = 0.702 W/kg
SAR(1 g) = 0.502 W/kg; SAR(10 g) = 0.350 W/kg (SAR corrected for target medium)
Maximum value of SAR (measured) = 0.551 W/kg
Configuration/RFID 20mm 2 2/Area Scan (91x91x1): Interpolated grid: dx=1.500 mm, dy=1.500 mm
Info: Interpolated medium parameters used for SAR evaluation.
Maximum value of SAR (interpolated) = 0.581 W/kg
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APPENDIX D: RELEVANT PAGES FROM PROBE CALIBRATION REPORTS
18 (25)
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21 (25)
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APPENDIX E: RELEVANT PAGES FROM DIPOLE CALIBRATION REPORTS
22 (25)
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Download: NUR21W UHF RFID Radio Module NUR2-1W RF Exposure Info RF Exposure Nordic ID Oy
Mirror Download [FCC.gov]NUR21W UHF RFID Radio Module NUR2-1W RF Exposure Info RF Exposure Nordic ID Oy
Document ID3711768
Application IDxxgSXZM9SAMQxG9Vx8yuYA==
Document DescriptionRF Exposure
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeRF Exposure Info
Display FormatAdobe Acrobat PDF - pdf
Filesize124.22kB (1552755 bits)
Date Submitted2018-01-12 00:00:00
Date Available2018-01-12 00:00:00
Creation Date2017-12-21 08:46:53
Producing SoftwareMicrosoft® Word 2016
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Document TitleRF Exposure
Document CreatorMicrosoft® Word 2016
Document Author: Tietokone

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PDF Version                     : 1.7
Linearized                      : Yes
Author                          : Tietokone
Create Date                     : 2017:12:21 08:46:53+02:00
Modify Date                     : 2017:12:21 08:47:23+02:00
Has XFA                         : No
Language                        : fi-FI
Tagged PDF                      : Yes
XMP Toolkit                     : Adobe XMP Core 5.6-c015 84.159810, 2016/09/10-02:41:30
Producer                        : Microsoft® Word 2016
Format                          : application/pdf
Creator                         : Tietokone
Creator Tool                    : Microsoft® Word 2016
Metadata Date                   : 2017:12:21 08:47:23+02:00
Document ID                     : uuid:8E9445E6-2CEA-4D70-AA36-A2074B2FE9D8
Instance ID                     : uuid:0775d0ae-4165-4085-8496-fda9810a3e38
Page Count                      : 25