DCHT Digital Wireless Microphone Transmitter RF Exposure Info Lectrosonics Inc

Lectrosonics Inc Digital Wireless Microphone Transmitter

FCC ID Filing: DBZDCHT
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SAR EVALUATION REPORT
For
Lectrosonics, Inc.
581 Laser Road NE Rio Rancho, NM 87124, USA
FCC ID: DBZDCHT
IC: 8024A-DCHT
Product Type:
Report Type:
Original Report
Prepared By
Vincent Licata
Test Engineer
Report Number
R1805223-SAR
Report Date
2018-06-15
Reviewed By
Jin Yang
RF Engineer
Test Laboratory
Digital Wireless Microphone
Transmitter
Bay Area Compliance Laboratories Corp.
1274 Anvilwood Ave.
Sunnyvale, CA 94089, USA
Tel: (408) 732-9162
Fax: (408) 732 9164
Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or
used in part without prior written consent from Bay Area Compliance Laboratories Corp. This report must not be used by the
customer to claim product certification, approval, or endorsement by A2LA* or any agency of the Federal Government. * This
report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*”
(Rev.3)
Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
Summary of Test Results
EUT Description
Tested Model
FCC ID
EUT
Information
IC
Serial Number
Test Date
Accessories
Digital Wireless Microphone Transmitter
DCHT
DBZDCHT
8024A-DCHT
2018-05-30
Wire Belt Clip: P/N 26895
Spring-loaded Belt Clip: BCSLEBN
Frequency
SAR Type
Max. SAR Level(s) Reported(W/kg)
Limit (W/kg)
470.1-607.95 MHz
1g Body SAR
0.337
1.6
Applicable Standards
FCC 47 CFR part 2.1093
Radiofrequency radiation exposure evaluation: portable devices
ISED RSS-102 Issue 5, March 19, 2015
Radio Frequency (RF) Exposure Compliance of Radiocommunication Apparatus (All
Frequency Bands)
ANSI / IEEE C95.1 : 2005
IEEE Standard for Safety Levels with Respect to Human Exposure to Radio
Frequency Electromagnetic Fileds,3 kHz to 300 GHz.
ANSI / IEEE C95.3 : 2002
IEEE Recommended Practice for Measurements and Computations of Radio
Frequency Electromagnetic Fields With Respect to Human Exposure to
SuchFields,100 kHz—300 GHz.
IEEE1528:2013
IEEE Recommended Practice for Determining the Peak Spatial-Average Specific
Absorption Rate (SAR) in the Human Head from Wireless Communications Devices:
Measurement Techniques
IEC 62209-2:2010
Human exposure to radio frequency fields from hand-held and body-mounted
wireless communication devices-Human models, instrumentation, and proceduresPart 2: Procedure to determine the specific absorption rate (SAR) for wireless
communication devices used in close proximity to the human body (frequency range
of 30 MHz to 6 GHz)
KDB procedures
KDB 447498 D01 General RF Exposure Guidance v06
KDB 865664 D01 SAR Measurement 100 MHz to 6 GHz v01r04
KDB 865664 D02 RF Exposure Reporting v01r02
Note: This wireless device has been shown to be capable of compliance for localized specific absorption rate
(SAR) for General Population/Uncontrolled Exposure limits specified in FCC 47 CFR part 2.1093 and has been
tested in accordance with the measurement procedures specified in IEEE 1528-2013 and RF exposure KDB
procedures.
The results and statements contained in this report pertain only to the device(s) evaluated.
Report Number: R1805223-SAR
Page 2 of 97
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
TABLE OF CONTENTS
GENERAL DESCRIPTION ................................................................................................................................6
1.1
PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .......................................................................6
1.2
TEST EUT TECHNICAL SPECIFICATION ...........................................................................................................6
TEST FACILITY ..................................................................................................................................................7
REFERENCE AND GUIDELINES ....................................................................................................................9
3.1
SAR LIMITS ..................................................................................................................................................10
EQUIPMENT LIST AND CALIBRATION .....................................................................................................11
4.1
EQUIPMENT LIST & CALIBRATION INFO........................................................................................................11
SAR MEASUREMENT SYSTEM VERIFICATION .....................................................................................12
5.1
SYSTEM ACCURACY VERIFICATION ..............................................................................................................12
5.2
SYSTEM SETUP BLOCK DIAGRAM .................................................................................................................12
5.3
LIQUID AND SYSTEM VALIDATION................................................................................................................13
EUT TEST STRATEGY AND METHODOLOGY .........................................................................................14
6.1
TEST POSITIONS FOR DEVICE OPERATING NEXT TO A PERSON’S EAR...........................................................14
6.2
CHEEK/TOUCH POSITION ..............................................................................................................................15
6.3
EAR/TILT POSITION.......................................................................................................................................15
6.4
TEST POSITION FOR BODY-SUPPORT DEVICE AND OTHER CONFIGURATIONS ..................................................17
6.5
TEST POSITIONS FOR BODY-WORN AND OTHER CONFIGURATIONS .................................................................18
6.6
SAR EVALUATION PROCEDURE ....................................................................................................................19
6.7
TEST METHODOLOGY ...................................................................................................................................19
DASY52 SAR EVALUATION PROCEDURE.................................................................................................20
7.1
POWER REFERENCE MEASUREMENT .............................................................................................................20
7.2
AREA SCAN...................................................................................................................................................20
7.3
ZOOM SCAN ..................................................................................................................................................21
7.4
POWER DRIFT MEASUREMENT .......................................................................................................................21
7.5
Z-SCAN .........................................................................................................................................................21
DESCRIPTION OF TEST SYSTEM ................................................................................................................22
8.1
IEEE 1528-2013 RECOMMENDED TISSUE DIELECTRIC PARAMETERS...........................................................22
8.2
MEASUREMENT SYSTEM DIAGRAM ..............................................................................................................23
8.3
SYSTEM COMPONENTS ..................................................................................................................................24
8.4
DASY6 MEASUREMENT SERVER ..................................................................................................................24
8.5
DATA ACQUISITION ELECTRONICS ...............................................................................................................25
8.6
PROBES .........................................................................................................................................................25
8.7
ET3DV6 PROBE SPECIFICATION ...................................................................................................................25
8.8
E-FIELD PROBE CALIBRATION PROCESS .......................................................................................................26
8.9
DATA EVALUATION ......................................................................................................................................27
8.10
LIGHT BEAM UNIT ........................................................................................................................................28
8.11
TISSUE SIMULATING LIQUIDS .......................................................................................................................28
8.12
SAM TWIN PHANTOM ..................................................................................................................................29
8.13
ELI PHANTOM ..............................................................................................................................................29
8.14
SYSTEM VALIDATION KITS ...........................................................................................................................30
8.15
ROBOT ..........................................................................................................................................................30
SAR MEASUREMENT CONSIDERATION...................................................................................................31
9.1
SAR CONSIDERATION ...................................................................................................................................31
10
SAR MEASUREMENT RESULTS ..................................................................................................................32
10.1
ENVIRONMENTAL CONDITIONS .....................................................................................................................32
10.2
STANDALONE SAR RESULTS ........................................................................................................................32
11
APPENDIX A – MEASUREMENT UNCERTAINTY....................................................................................34
12
APPENDIX B – PROBE CALIBRATION CERTIFICATES ........................................................................35
Report Number: R1805223-SAR
Page 3 of 97
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
13 APPENDIX C – DIPOLE CALIBRATION CERTIFICATES ......................................................................73
14
APPENDIX D - TEST SYSTEM VERIFICATIONS SCANS ........................................................................89
15
APPENDIX E – EUT SCAN RESULTS ...........................................................................................................91
16
APPENDIX F – RF OUTPUT POWER MEASUREMENT ...........................................................................94
17
APPENDIX G- EUT PHOTOGRAPHS ...........................................................................................................95
18
APPENDIX H - INFORMATIVE REFERENCES..........................................................................................96
19
ANNEX A (INFORMATIVE) - A2LA ELECTRICAL TESTING CERTIFICATE ...................................97
Report Number: R1805223-SAR
Page 4 of 97
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
DOCUMENT REVISION HISTORY
Revision Number
Report Number
Description of Revision
Date of Revision
R1805223-SAR
Original Report
2018-06-15
Report Number: R1805223-SAR
Page 5 of 97
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
General Description
1.1
Product Description for Equipment Under Test (EUT)
This test and measurement report has been compiled on behalf of Lectrosonics, Inc. and their product
model: DCHT, FCC ID: DBZDCHT, IC: 8024A-DCHT which henceforth is referred to as the EUT
(Equipment Under Test). The EUT is a Digital wireless microphone transmitter. The EUT operates in the
frequency range: 470.1-607.95 MHz.
1.2
Test EUT Technical Specification
Item
Description
Modulation Type
8PSK
Frequency Range
470.1-607.95 MHz
Maximum Conducted Power
Tested
16.64 dBm
470.1 MHz
16.62 dBm
539.025 MHz
16.70 dBm
607.95 MHz
Power Source
DCHT: 2 DC 1.5V batteries.
Normal Operation
Body-worn with accessories
The test data gathered are from typical production sample, product S/N: 2 provided by the client.
Report Number: R1805223-SAR
Page 6 of 97
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
Test Facility
Bay Area Compliance Laboratories Corp. (BACL) is:
A- An independent, 3rd-Party, Commercial Test Laboratory accredited to ISO/IEC 17025:2005 by
A2LA (Test Laboratory Accreditation Certificate Number 3279.02), in the fields of: Electromagnetic
Compatibility and Telecommunications. Unless noted by an Asterisk (*) in the Compliance Matrix (See
Section 3 of this Test Report), BACL’s ISO/IEC 17025:2005 Scope of Accreditation includes all of the
Test Method Standards and/or the Product Family Standards detailed in this Test Report..
BACL’s ISO/IEC 17025:2005 Scope of Accreditation includes a comprehensive suite of EMC Emissions,
EMC Immunity, Radio, RF Exposure, Safety and wireline Telecommunications test methods applicable
to a wide range of product categories.
These product categories include Central Office
Telecommunications Equipment [including NEBS - Network Equipment Building Systems], Unlicensed
and Licensed Wireless and RF devices, Information Technology Equipment (ITE); Telecommunications
Terminal Equipment (TTE); Medical Electrical Equipment; Industrial, Scientific and Medical Test
Equipment; Professional Audio and Video Equipment; Industrial and Scientific Instruments and
Laboratory Apparatus; Cable Distribution Systems, and Energy Efficient Lighting.
B- A Product Certification Body accredited to ISO/IEC 17065:2012 by A2LA (Product Certification
Body
- - For the USA (Federal Communications Commission):
1All Unlicensed radio frequency devices within FCC Scopes A1, A2, A3, and A4;
2All Licensed radio frequency devices within FCC Scopes B1, B2, B3, and B4;
3All Telephone Terminal Equipment within FCC Scope C.
- For the Canada (Industry Canada):
1All Scope 1-Licence-Exempt Radio Frequency Devices;
2All Scope 2-Licensed Personal Mobile Radio Services;
3All Scope 3-Licensed General Mobile & Fixed Radio Services;
4All Scope 4-Licensed Maritime & Aviation Radio Services;
5All Scope 5-Licensed Fixed Microwave Radio Services
6All Broadcasting Technical Standards (BETS) in the Category I Equipment Standards
List.
For Singapore (Info-Communications Development Authority (IDA)):
All Line Terminal Equipment: All Technical Specifications for Line Terminal Equipment
– Table 1 of IDA MRA Recognition Scheme: 2011, Annex 2
2.
All Radio-Communication Equipment: All Technical Specifications for RadioCommunication Equipment – Table 2 of IDA MRA Recognition Scheme: 2011, Annex 2
- For the Hong Kong Special Administrative Region:
All Radio Equipment, per KHCA 10XX-series Specifications;
All GMDSS Marine Radio Equipment, per HKCA 12XX-series Specifications;
All Fixed Network Equipment, per HKCA 20XX-series Specifications.
- For Japan:
MIC Telecommunication Business Law (Terminal Equipment):
- All Scope A1 - Terminal Equipment for the Purpose of Calls;
- All Scope A2 - Other Terminal Equipment
Radio Law (Radio Equipment):
- All Scope B1 - Specified Radio Equipment specified in Article 38-2-2, paragraph 1, item
1 of the Radio Law
- All Scope B2 - Specified Radio Equipment specified in Article 38-2-2, paragraph 1, item
2 of the Radio Law
- All Scope B3 - Specified Radio Equipment specified in Article 38-2-2, paragraph 1, item
3 of the Radio Law
C- A Product Certification Body accredited to ISO/IEC 17065:2012 by A2LA (Product Certification
Body Accreditation Certificate Number 3279.01) to certify Products to USA’s Environmental Protection
Agency (EPA) ENERGY STAR Product Specifications for:
1 Electronics and Office Equipment:
- for Telephony (ver. 3.0)
Report Number: R1805223-SAR
Page 7 of 97
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
- for Audio/Video (ver. 3.0)
- for Battery Charging Systems (ver. 1.1)
- for Set-top Boxes & Cable Boxes (ver. 4.1)
- for Televisions (ver. 6.1)
- for Computers (ver. 6.0)
- for Displays (ver. 6.0)
- for Imaging Equipment (ver. 2.0)
- for Computer Servers (ver. 2.0)
Commercial Food Service Equipment
- for Commercial Dishwashers (ver. 2.0)
- for Commercial Ice Machines (ver. 2.0)
- for Commercial Ovens (ver. 2.1)
- for Commercial Refrigerators and Freezers
Lighting Products
- For Decorative Light Strings (ver. 1.5)
- For Luminaires (including sub-components) and Lamps (ver. 1.2)
- For Compact Fluorescent Lamps (CFLs) (ver. 4.3)
- For Integral LED Lamps (ver. 1.4)
Heating, Ventilation, and AC Products
- for Residential Ceiling Fans (ver. 3.0)
- for Residential Ventilating Fans (ver. 3.2)
Other
- For Water Coolers (ver. 3.0)
D. A NIST Designated Phase-I and Phase-II Conformity Assessment Body (CAB) for the following
economies and regulatory authorities under the terms of the stated MRAs/Treaties:
- Australia: ACMA (Australian Communication and Media Authority) – APEC Tel MRA -Phase I;
- Canada: (Industry Canada - IC) Foreign Certification Body – FCB – APEC Tel MRA -Phase I &
Phase II;
- Chinese Taipei (Republic of China – Taiwan):
o BSMI (Bureau of Standards, Metrology and Inspection) APEC Tel MRA -Phase I;
o NCC (National Communications Commission) APEC Tel MRA -Phase I;
- European Union:
o EMC Directive 2014/30/EU US-EU EMC & Telecom MRA CAB (NB)
o Radio Equipment (RE) Directive 2014/53/EU US-EU EMC & Telecom MRA CAB (NB)
o Low Voltage Directive (LVD) 2014/35/EU
- Hong Kong Special Administrative Region: (Office of the Telecommunications Authority –
OFTA)
APEC Tel MRA -Phase I & Phase II
- Israel – US-Israel MRA Phase I
- Republic of Korea (Ministry of Communications - Radio Research Laboratory) APEC Tel MRA Phase I
- Singapore: (Infocomm Development Authority - IDA) APEC Tel MRA -Phase I & Phase II;
- Japan: VCCI - Voluntary Control Council for Interference US-Japan Telecom Treaty VCCI Side
Letter
- USA:
o ENERGY STAR Recognized Test Laboratory – US EPA
o Telecommunications Certification Body (TCB) – US FCC;
o Nationally Recognized Test Laboratory (NRTL) – US OSHA
Vietnam: APEC Tel MRA -Phase I;
Report Number: R1805223-SAR
Page 8 of 97
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
Reference and Guidelines
FCC/ISED:
The Report and Order requires routine SAR evaluation prior to equipment authorization of portable
transmitter devices, including portable telephones. For consumer products, the applicable limit is 1.6
mW/g as recommended by the ANSI/IEEE standard C95.1-1992 [6] for an uncontrolled environment
(Paragraph 65). According to the FCC KDB 447498 D01 “RF Exposure Procedures and Equipment
Authorization Polices for Mobile and Portable Devices”, RF Exposure compliance must be determined at
the maximum average power level according to source-based time-averaging requirements to determine
compliance for general population exposure conditions.
This report describes the methodology and results of experiments performed on wireless data terminal.
The objective was to determine if there is RF radiation, and what is the extent of radiation with respect to
safety limits if radiation is found. SAR (Specific Absorption Rate) is the measure of RF exposure
determined by the amount of RF energy absorbed by human body (or its parts) – to determine how the RF
energy couples to the body or head which is a primary health concern for body worn devices. The limit
below which the exposure to RF is considered safe by regulatory bodies in North America is 1.6 mW/g
average over 1 gram of tissue mass.
CE:
The CE requires routine SAR evaluation prior to equipment authorization of portable transmitter devices,
including portable telephones. For consumer products, the applicable limit is 2 mW/g as recommended by
the EN50360 for an uncontrolled environment. According to the Standard, the device should be evaluated
at maximum output power (radiated from the antenna) under “worst-case” conditions for normal or
intended use, incorporating normal antenna operating positions, device peak performance frequencies and
positions for maximum RF energy coupling.
This report describes the methodology and results of experiments performed on wireless data terminal.
The objective was to determine if there is RF radiation and if radiation is found, what is the extent of
radiation with respect to safety limits? SAR (Specific Absorption Rate) is the measure of RF exposure
determined by the amount of RF energy absorbed by human body (or its parts) – to determine how the RF
energy couples to the body or head which is a primary health concern for body worn devices. The limit
below which the exposure to RF is considered safe by regulatory bodies in Europe is 2 mW/g average
over 10 gram of tissue mass.
The test configurations were laid out on a specially designed test fixture to ensure the reproducibility of
measurements. Each configuration was scanned for SAR. Analysis of each scan was carried out to
characterize the above effects in the device.
Report Number: R1805223-SAR
Page 9 of 97
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Lectrosonics, Inc.
3.1
FCC ID: DBZDCHT, IC: 8024A-DCHT
SAR Limits
FCC/ISED Limit
SAR (W/kg)
EXPOSURE LIMITS
(General Population /
Uncontrolled Exposure
Environment)
(Occupational /
Controlled Exposure
Environment)
Spatial Average
(averaged over the whole body)
0.08
0.4
Spatial Peak
(averaged over any 1 g of tissue)
1.60
8.0
Spatial Peak
(hands/wrists/feet/ankles
averaged over 10 g)
4.0
20.0
CE Limit
SAR (W/kg)
(General Population /
Uncontrolled Exposure
Environment)
(Occupational /
Controlled Exposure
Environment)
Spatial Average
(averaged over the whole body)
0.08
0.4
Spatial Peak
(averaged over any 10 g of tissue)
2.0
10
Spatial Peak
(hands/wrists/feet/ankles
averaged over 10 g)
4.0
20.0
EXPOSURE LIMITS
Population/Uncontrolled Environments are defined as locations where there is the exposure of individual
who have no knowledge or control of their exposure.
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 Spatial Peak limit 1.6 W/kg (FCC/ISED) applied to the
EUT.
Report Number: R1805223-SAR
Page 10 of 97
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Lectrosonics, Inc.
4.1
FCC ID: DBZDCHT, IC: 8024A-DCHT
Equipment List and Calibration
Equipment List & Calibration Info
Type/Model
Cal. Due Date
S/N
DASY6 Professional Dosimetric System
NCR
None
Robot TX90XL
NCR
F17/5DBKA1/A/01
Robot Controller CS8Cspeag-TX90
NCR
F17/5DBKA1/C/01
Pendant Control Box D21142607B
NCR
013151
Robot Remote Control Box SE UWS032 AA
NCR
None
HP Elitedesk 800 G3 TWR
NCR
CZC048171C
HP Elitedisplay E271i LED Backlit Monitor
NCR
3CM7208TJZ
SPEAG DAE4
2018-09-02
530
DASY6 Measurement Server SE UMS 028BB
NCR
1551
SPEAG E-Field Probe EX3DV4
2018-09-25
3619
Antenna, Dipole D600V3
2019-02-11
1010
Antenna, Dipole D450V2
2020-09-15
BCL-180
SPEAG Twin SAM Phantom
NCR
TP-1032
SPEAG ELI Phantom V8.0
NCR
2074
Body Tissue Simulating Liquid MBBL6006000V6
Each Time
171031-2
Power Sensor Agilent E4419B EPM Series
2018-09-22
MY40510985
Power Sensor Agilent 8481A
2018-09-22
3318A94106
Power Sensor ETS-LINDGREN 7002-006
2018-12-05
160097
Dielectric Probe Kit SPEAG DAK-3.5 Probe
NCR
1252
HP Network Analyzer 8753D
2019-03-01
3410A04346
NCR
1144A05102
2019-01-06
MY51350070
NCR
576400946
HEWLETT PACKARD 779D Directional
Coupler
Keysight Technologies Vector Signal
Generator N5182B
Mini Circuits, AMPLIFIER 2VA-183-S+
Note: NCR=No Calibration Required
Statement of Traceability: BACL Corp. attests that all of the calibrations on the equipment items listed above were
traceable to NIST or to another internationally recognized National Metrology Institute (NMI), and were compliant
with A2LA Policy P102 (dated 09 June 2016) “A2LA Policy on Metrological Traceability”.
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5.1
FCC ID: DBZDCHT, IC: 8024A-DCHT
SAR Measurement System Verification
System Accuracy Verification
SAR system verification is required to confirm measurement accuracy. The system verification must be
performed for each frequency band. System verification must be performed before each series of SAR
measurements.
5.2
System Setup Block Diagram
Procedure:
1) The SAR system verification measurements were performed in the flat section of TWIN SAM or flat
phantom with shell thickness of 2±0.2mm filled with head or body liquid.
2) The depth of liquid in phantom must be ≥15 cm for SAR measurement less than 3 GHz and ≥10 cm for
SAR measurement above 3 GHz.
3) The dipole was mounted below the center of flat phantom, and oriented parallel to the Y-Axis. The
standard measurement distance is 15mm (below 1 GHz ) and 10mm (above 1 GHz) from dipole center to
the liquid surface.
4) The dipole input power was 100 mW or 250 mW or 500 mW.
5) The SAR results are normalized to 1 Watt input power.
6) compared the normalized the SAR results to the dipole calibration results.
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5.3
FCC ID: DBZDCHT, IC: 8024A-DCHT
Liquid and System Validation
Date
2018-05-30
Date
2018-05-30
Simulant
Body
Simulant
Body
Freq.
[MHz]
600
Freq.
[MHz]
450
Parameters
Liquid
Temp
[ºC]
Target
Value
Measured
Value
Deviation
[%]
Limits
[%]
r
22
56.12
56.11
-0.01
±5

22
0.95
0.91
-4.31
±5
1g SAR
22
6.66
6.61
-0.75
± 10
Parameters
Liquid
Temp
[ºC]
Target
Value
Measured
Value
Deviation
[%]
Limits
[%]
r
22
56.70
56.60
-0.18
±5

22
0.94
0.91
-3.40
±5
1g SAR
22
4.79
4.63
-3.34
± 10
r = relative permittivity,  = conductivity and =1000 kg/m3
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FCC ID: DBZDCHT, IC: 8024A-DCHT
EUT Test Strategy and Methodology
6.1
Test Positions for Device Operating Next to a Person’s Ear
This category includes most wireless handsets with fixed, retractable or internal antennas located
toward the top half of the device, with or without a foldout, sliding or similar keypad cover. The
handset should have its earpiece located within the upper ¼ of the device, either along the centerline or
off-centered, as perceived by its users. This type of handset should be positioned in a normal operating
position with the “test device reference point” located along the “vertical centerline” on the front of the
device aligned to the “ear reference point”. The “test device reference point” should be located at the
same level as the center of the earpiece region. The “vertical centerline” should bisect the front surface
of the handset at its top and bottom edges. An “ear reference point” is located on the outer surface of
the head phantom on each ear spacer. It is located 1.5 cm above the center of the ear canal entrance in
the “phantom reference plane” defined by the three lines joining the center of each “ear reference point”
(left and right) and the tip of the mouth.
A handset should be initially positioned with the earpiece region pressed against the ear spacer of a
head phantom. For the SCC-34/SC-2 head phantom, the device should be positioned parallel to the “NF” line defined along the base of the ear spacer that contains the “ear reference point”. For interim head
phantoms, the device should be positioned parallel to the cheek for maximum RF energy coupling. The
“test device reference point” is aligned to the “ear reference point” on the head phantom and the
“vertical centerline” is aligned to the “phantom reference plane”. This is called the “initial ear
position”. While maintaining these three alignments, the body of the handset is gradually adjusted to
each of the following positions for evaluating SAR:
LE
ERP
15 mm
EEP
ERP - ear reference point
EEP - entrance to ear anal
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6.2
FCC ID: DBZDCHT, IC: 8024A-DCHT
Cheek/Touch Position
The device is brought toward the mouth of the head phantom by pivoting against the “ear reference point”
or along the “N-F” line for the SCC-34/SC-2 head phantom.
This test position is established:
When any point on the display, keypad or mouthpiece portions of the handset is in
contact with the phantom.
(or) When any portion of a foldout, sliding or similar keypad cover opened to its intended
self-adjusting normal use position is in contact with the cheek or mouth of the phantom.
For existing head phantoms – when the handset loses contact with the phantom at the pivoting point,
rotation should continue until the device touches the cheek of the phantom or breaks its last contact
from the ear spacer.
Cheek /Touch Position
6.3
Ear/Tilt Position
With the handset aligned in the “Cheek/Touch Position”:
1) If the earpiece of the handset is not in full contact with the phantom’s ear spacer (in the “Cheek/Touch
position”) and the peak SAR location for the “Cheek/Touch” position is located at the ear spacer region
or corresponds to the earpiece region of the handset, the device should be returned to the “initial ear
position” by rotating it away from the mouth until the earpiece is in full contact with the ear spacer.
2) (otherwise) The handset should be moved (translated) away from the cheek perpendicular to the line
passes through both “ear reference points” (note: one of these ear reference points may not physically
exist on a split head model) for approximate 2-3 cm. While it is in this position, the device handset is
tilted away from the mouth with respect to the “test device reference point” until the inside angle
between the vertical centerline on the front surface of the phone and the horizontal line passing through
the ear reference point is by 15 80°. After the tilt, it is then moved (translated) back toward the head
perpendicular to the line passes through both “ear reference points” until the device touches the phantom
or the ear spacer. If the antenna touches the head first, the positioning process should be repeated with a
tilt angle less than 15 80° so that the device and its antenna would touch the phantom simultaneously.
This test position may require a device holder or positioner to achieve the translation and tilting with
acceptable positioning repeatability.
If a device is also designed to transmit with its keypad cover closed for operating in the head position,
such positions should also be considered in the SAR evaluation. The device should be tested on the left
and right side of the head phantom in the “Cheek/Touch” and “Ear/Tilt” positions. When applicable,
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FCC ID: DBZDCHT, IC: 8024A-DCHT
each configuration should be tested with the antenna in its fully extended and fully retracted positions.
These test configurations should be tested at the high, middle and low frequency channels of each
operating mode; for example, AMPS, CDMA, and TDMA. If the SAR measured at the middle channel
for each test configuration (left, right, Cheek/Touch, Tile/Ear, extended and retracted) is at least 2.0 dB
lower than the SAR limit, testing at the high and low channels is optional for such test configuration(s).
If the transmission band of the test device is less than 10 MHz, testing at the high and low frequency
channels is optional.
Ear /Tilt 15o Position
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6.4
FCC ID: DBZDCHT, IC: 8024A-DCHT
Test position for body-support device and other configurations
A typical example of a body supported device is a wireless enabled laptop device that among other
orientations may be supported on the thighs of a sitting use. To represent this orientation, the device shall
be positioned with its base against the flat phantom. Other orientations may be specified by the
manufactures in the user instructions. If the intended use is not specified, the device shall be tested
directly against the flat phantom in all usable orientations.
The screen portion of the device shall be in an open position at a 90° angle, or at an operating angle
specified for intended use by the manufacturer in the operating instructions. Where a body supported
device has an integral screen required for normal operation, then the screen-side will not need to be tested
if it ordinarily remains 200 mm from the body. Where a screen mounted antenna is present, this position
shall be repeated with the screen against the flat phantom, if this is consistent with the intended use.
Other devices that fall into this category include tablet type portable computers and credit card transaction
authorization terminals, point-of-sale and/or inventory terminals. Where these devices may be torso or
limb-supported, the same principles for body-supported devices are applied.
The example in Figure b) shows a tablet from factor portable computer for which SAR should be
separately assessed with
a) Each surface and
b) The separation distances
Positioned against the flat phantom that correspond to the intended use as specified by the manufacturer.
If the intended use is not specified in the user instructions, the device shall be tested directly against the
flat phantom in all usable orientations.
Some body-supported devices may allow testing with an external power supply (e.g. a.c. adapter)
supplemental to the battery, but it shall be verified and documented in the measurement report that SAR
is still conservative
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6.5
FCC ID: DBZDCHT, IC: 8024A-DCHT
Test positions for body-worn and other configurations
Body-worn operating configurations should be tested with the belt-clips and holsters attached to the
device and positioned against a flat phantom in normal use configurations. Devices with a headset output
should be tested with a headset connected to the device. When multiple accessories that do not contain
metallic components are supplied with the device, the device may be tested with only the accessory that
dictates the closest spacing to the body. When multiple accessories that contain metallic components are
supplied with the device, the device must be tested with each accessory that contains a unique metallic
component. If multiple accessories share an identical metallic component (e.g., the same metallic beltclip used with different holsters with no other metallic components), only the accessory that dictates the
closest spacing to the body must be tested.
Body-worn accessories may not always be supplied or available as options for some devices that are
intended to be authorized for body-worn use. A separation distance of 1.5 cm between the back of the
device and a flat phantom is recommended for testing body-worn SAR compliance under such
circumstances. Other separation distances may be used, but they should not exceed 2.5 cm. In these cases,
the device may use body-worn accessories that provide a separation distance greater than that tested for
the device provided however that the accessory contains no metallic components.
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6.6
FCC ID: DBZDCHT, IC: 8024A-DCHT
SAR Evaluation Procedure
The evaluation was performed with the following procedure:
Step 1: Measurement of the SAR value at a fixed location above central position was
used as a reference value for assessing the power drop. The SAR at this point is measured at the
start of the test and then again at the end of the testing.
Step 2: The SAR distribution at the exposed side of body was measured at a distance of 4 mm from
the inner surface of the shell. The area covered the entire dimension of the body or EUT and the
horizontal grid spacing was 50 mm x 110 mm. Based on these data, the area of the maximum
absorption was determined by line interpolation. The first Area Scan covers the entire dimension
of the EUT to ensure that the hotspot was correctly identified.
Step 3: Around this point, a volume of 30 mm x 30 mm x 21 mm was assessed by measuring 5 x 5 x 7
points. On the basis of this data set, the spatial peak SAR value was evaluated under the
following procedure:
1. The data at the surface were extrapolated, since the center of the dipoles is 1.2 mm away from the
tip of the probe. The extrapolation was based on a least square algorithm. A polynomial of the
fourth order was calculated through the points in z-axes. This polynomial was then used to
evaluate the points between the surface and the probe tip.
2. The maximum interpolated value was searched with a straightforward algorithm. Around this
maximum the SAR values averaged over the spatial volumes (1 g or 10 g) were computed by the
3D-Spline interpolation algorithm. The 3D-Spline is composed of three one dimensional splines
with the “Not a knot"-condition (in x, y and z-directions). The volume was integrated with the
trapezoidal-algorithm. One thousand points (10 x 10 x 10) were interpolated to calculate the
averages.
3. All neighboring volumes were evaluated until no neighboring volume with a higher average value
was found.
Step 4: Re-measurement of the SAR value at the same location as in Step 1. If the value changed by more
than 5%, the evaluation was repeated.
6.7
Test Methodology
IEEE 1528: 2013
IEC 62209-2: 2010
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7.1
FCC ID: DBZDCHT, IC: 8024A-DCHT
DASY52 SAR Evaluation Procedure
Power Reference Measurement
The Power Reference Measurement and Power Drift Measurement jobs are useful jobs for monitoring the
power drift of the device under test in the batch process. Both jobs measure the field at a specified
reference position, at a selectable distance from the phantom surface. The reference position can be either
the selected section’s grid reference point or a user point in this section. The reference job projects the
selected point onto the phantom surface, orients the probe perpendicularly to the surface, and approaches
the surface using the selected detection method. The Minimum distance of probe sensors to surface
determines the closest measurement point to phantom surface. By default, the Minimum distance of probe
sensors to surface is 4mm. This distance can be modified by the user, but cannot be smaller than the
Distance of sensor calibration points to probe tip as defined in the probe properties.
7.2
Area Scan
The Area Scan is used as a fast scan in two dimensions to find the area of high field values, before doing
a finer measurement around the hot spot. The sophisticated interpolation routines implemented in
DASY52 software can find the maximum locations even in relatively coarse grids.
The scanning area is defined by an editable grid. This grid is anchored at the grid reference point of the
selected section in the phantom. When the Area Scan’s property sheet is brought-up, grid settings can be
edited by a user.
When an Area Scan has measured all reachable points, it computes the field maxima found in the scanned
area, within a range of the global maximum. The range (in dB) is specified in the standards for
compliance testing. For example, a 2 dB range is required in IEEE 1528, EN 50361 and IEC 62209
standards, whereby 3 dB is a requirement when compliance is assessed in accordance with the ARIB
standard (Japan). If only one Zoom Scan follows the Area Scan, then only the absolute maximum will be
taken as reference. For cases where multiple maximums are detected, the number of Zoom Scans has to
be increased accordingly (see Section 3.3.2.14 Zoom Scan for details). After measurement is completed,
all maxima and their coordinates are listed in the Results property page. The maximum selected in the list
is highlighted in the 3-D view. For the secondary maxima returned from an Area Scan, the user can
specify a lower limit (peak SAR value), in addition to the Find secondary maxima within x dB condition.
After measurement is completed, all maxima and their coordinates are listed in the Results property page.
The maximum selected in the list is highlighted in the 3-D view. For the secondary maxima returned from
an Area Scan, the user can specify a lower limit (peak SAR value), in addition to the Find secondary
maxima within x dB condition. Only the primary maximum and any secondary maxima within x dB from
the primary maximum and above this limit will be measured.
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7.3
FCC ID: DBZDCHT, IC: 8024A-DCHT
Zoom Scan
Zoom Scans are used to assess the peak spatial SAR values within a cubic averaging volume containing 1
g and 10 g of simulated tissue. The default Zoom Scan measures 5 x 5 x 7 points within a cube whose
base faces are centered around the maxima found in a preceding area scan job within the same procedure.
When the measurement is done, the Zoom Scan evaluates the averaged SAR for 1 g and 10 g and displays
these values next to the job’s label.
7.4
Power drift measurement
The Power Drift Measurement job measures the field at the same location as the most recent power
reference measurement job within the same procedure, and with the same settings. The Power Drift
Measurement gives the field difference in dB from the reading conducted within the last Power Reference
Measurement. Several drift measurements are possible for one reference measurement. This allows a user
to monitor the power drift of the device under test within a batch process. The measurement procedure is
the same as Step 1.
7.5
Z-Scan
The Z Scan job measures points along a vertical straight line. The line runs along the Z axis of a onedimensional grid. A user can anchor the grid to the section reference point, to any defined user point or to
the current probe location. As with any other grids, the local Z axis of the anchor location establishes the
Z axis of the grid.
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FCC ID: DBZDCHT, IC: 8024A-DCHT
Description of Test System
These measurements were performed with the automated near-field scanning system DASY6 from
Schmid & Partner Engineering AG (SPEAG) which is the sixth generation of the system shown in the
figure hereinafter:
The system is based on a high precision robot (working range greater than 1.45m), which positions the
probes with a positional repeatability of better than ±0.02mm. Special E- and H-field probes have been
developed for measurements close to material discontinuity, the sensors of which are directly loaded with
a Schottky diode and connected via highly resistive lines to the data acquisition unit.
The SAR measurements were conducted with the dosimetric probe EX3DV4 SN: 3619 (manufactured by
SPEAG), designed in the classical triangular configuration and optimized for dosimetric evaluation. The
probe has been calibrated according to the procedure with accuracy of better than ±10%. The spherical
isotropy was evaluated with the procedure and found to be better than ±0.25dB.
8.1
IEEE 1528-2013 Recommended Tissue Dielectric Parameters
Head Tissue
Body Tissue
Frequency
(MHz)
εr
ơ (S/m)
εr
ơ (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
5800
35.3
5.27
48.2
6.00
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8.2
FCC ID: DBZDCHT, IC: 8024A-DCHT
Measurement System Diagram
The DASY6 system for performing compliance tests consists of the following items:
• A standard high precision 6-axis robot arm (Stäubli TX90XL) with controller, teach pendant and
software. An arm extension for accommodating the data acquisition electronics (DAE).
• A dosimetric probe, i.e., an isotropic E-field probe optimized and calibrated for usage in tissue
simulating liquid. The probe is equipped with an optical surface detector system.
• A data acquisition electronics (DAE4) which performs the signal amplification, signal multiplexing,
AD-conversion, offset measurements, mechanical surface detection, collision detection, etc. The unit
is battery powered with standard or rechargeable batteries. The signal is optically transmitted to the
EOC.
• The Electro-optical converter (EOC) performs the conversion between optical and electrical of the
signals for the digital communication to the DAE and for the analog signal from the optical surface
detection. The EOC is connected to the measurement server.
• The function of the measurement server is to perform the time critical tasks such as signal filtering,
control of the robot operation and fast movement interrupts.
• A probe alignment unit which improves the (absolute) accuracy of the probe positioning.
• A computer operating Windows 2000 or Windows XP.
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FCC ID: DBZDCHT, IC: 8024A-DCHT
• DASY52 software.
• Remote control with teach pendant and additional circuitry for robot safety such as warning lamps, etc.
• The Twin SAM phantom enabling testing left-hand and right-hand usage.
• The ELI V8.0 phantom.
• The device holder for handheld mobile phones.
• Tissue simulating liquid mixed according to the given recipes.
• Validation dipole kits allowing system validation.
8.3
System Components
• DASY6 Measurement Server
• Data Acquisition Electronics
• Probes
• Light Beam Unit
• Medium
• SAM Twin Phantom
• ELI V8.0 Phantom
• Device Holder for SAM Twin Phantom
• System Validation Kits
• Robot
8.4
DASY6 Measurement Server
The DASY6 measurement server is based on a PC/104
CPU board with a 400MHz intel ULV
Celeron, 128MB chip-disk and 128MB RAM. The
necessary circuits for communication with the DAE4
(or DAE3) electronics box, as well as the 16-bit AD
converter system for optical detection and digital I/O
interface are contained on the DASY6 I/O board,
which is directly connected to the PC/104 bus of the
CPU board.
The measurement server performs all real-time data evaluations of field measurements and surface
detection, controls robot movements, and handles safety operations. The PC operating system cannot
interfere with these time-critical processes. All connections are supervised by a watchdog, and
disconnection of any of the cables to the measurement server will automatically disarm the robot and
disable all program controlled robot movements. Furthermore, the measurement server is equipped with
an expansion port, which is reserved for future applications. Please note that this expansion port does not
have a standardized pinout, and therefore only devices provided by SPEAG can be connected. Connection
of devices from any other supplier could seriously damage the measurement server.
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8.5
FCC ID: DBZDCHT, IC: 8024A-DCHT
Data Acquisition Electronics
The data acquisition electronics DAE4 consists of a highly
sensitive electrometer grade preamplifier with auto-zeroing, a
channel and gain-switching multiplexer, a fast 16 bit ADconverter and a command decoder and control logic unit.
Transmission to the measurement server is accomplished
through an optical downlink for data and status information as
well as an optical uplink for commands and the clock.
8.6
Probes
The DASY system can support many different probe types.
Dosimetric Probes: These probes are specially designed and calibrated for use in liquids with high
permittivities. They should not be used in air, since the spherical isotropy in air is poor (±2 dB). The
dosimetric probes have special calibrations in various liquids at different frequencies.
Free Space Probes: These are electric and magnetic field probes specially designed for measurements in
free space. The z-sensor is aligned to the probe axis and the rotation angle of the x-sensor is specified.
This allows the DASY system to automatically align the probe to the measurement grid for field
component measurement. The free space probes are generally not calibrated in liquid. (The H-field probes
can be used in liquids without any change of parameters.)
Temperature Probes: Small and sensitive temperature probes for general use. They use a completely
different parameter set and different evaluation procedures. Temperature rise features allow direct SAR
evaluations with these probes.
8.7
ET3DV6 Probe Specification
Construction Symmetrical design with triangular core
Built-in shielding against static charges
Calibration In air from 4 MHz to 10 GHz
In brain and muscle simulating tissue at
frequencies of 450 MHz, 600 MHz, 750 MHz, 835 MHz,
1750 MHz, 1900 MHz, 2450 MHz, 2600 MHz, 5250
MHz, 5600 MHz, and 5800 MHz (accuracy ± 13.3%).
Frequency 4 MHz to 10 GHz; Linearity: ± 0.2 dB
(30 MHz to 10 GHz)
Directivity ± 0.1 dB in TSL (rotation around probe axis)
± 0.3 dB in TSL (rotation normal probe axis)
Dynamic Range: 10 µW/g to > 100 mW/g;
Dynamic Range Linearity: ± 0.2 dB
Photograph of the probe
Dimensions Overall length: 337 mm; Tip length: 20 mm; Body diameter: 12 mm; Tip diameter: 2.5 mm
Typical distance from probe tip to dipole centers: 1 mm
Application: High precision dosimetric measurements in ant exposure scenario (e.g., very strong gradient
fields); the only probe that enables compliance testing for frequencies up to 6 GHz with precision of
better than 30%.
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8.8
FCC ID: DBZDCHT, IC: 8024A-DCHT
E-Field Probe Calibration Process
Each probe is calibrated according to a dosimetric assessment procedure described in [6] with accuracy
each probe is calibrated according to a dosimetric assessment procedure described in [6] with accuracy
better than +/- 10%. The spherical isotropy was evaluated with the procedure described in [7] and found
to be better than +/-0.25dB. The sensitivity parameters (NormX, NormY, NormZ), the diode compression
parameter (DCP) and the conversion factor (ConvF) of the probe are tested.
The free space E-field from amplified probe outputs is determined in a test chamber. This is performed in
a TEM cell for frequencies bellow 1 GHz, and in a waveguide above 1 GHz for free space. For the free
space calibration, the probe is placed in the volumetric center of the cavity and at the proper orientation
with the field. The probe is then rotated 360 degrees.
E-field temperature correlation calibration is performed in a flat phantom filled with the appropriate
simulated brain tissue. The measured free space E-field in the medium correlates to temperature rise in
dielectric medium. For temperature correlation calibration a RF transparent thermistor-based temperature
probe is used in conjunction with the E-field probe.
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8.9
FCC ID: DBZDCHT, IC: 8024A-DCHT
Data Evaluation
The DASY6 post-processing software (SEMCAD) automatically executes the following procedures to
calculate the field units from the microvolt readings at the probe connector. The parameters used in the
evaluation are stored in the configuration modules of the software:
Probe parameters: - Sensitivity
- Conversion factor
- Diode compression point
Normi, ai0, ai1, ai2
ConvFi
dcpi
Device parameters: - Frequency
- Crest factor
cf
Media parameters: - Conductivity
- Density
σ
ρ
These parameters must be set correctly in the software. They can be found in the component documents
or they can be imported into the software from the configuration files issued for the DASY components.
In the direct measuring mode of the multimeter option, the parameters of the actual system setup are used.
In the scan visualization and export modes, the parameters stored in the corresponding document files are
used.
The first step of the evaluation is a linearization of the filtered input signal to account for the compression
characteristics of the detector diode. The compensation depends on the input signal, the diode type and
the DC-transmission factor from the diode to the evaluation electronics. If the exciting field is pulsed, the
crest factor of the signal must be known to correctly compensate for peak power. The formula for each
channel can be given as:
With Vi
Ui
cf
dcpi
= compensated signal of channel i (i =x, y, z)
= input signal of channel i (i =x, y, z)
= crest factor of exciting field (DASY parameter)
= diode compression point (DASY parameter)
From the compensated input signals the primary field data for each channel can be evaluated:
With
Vi
= compensated signal of channel i (i =x, y, z)
Normi = sensor sensitivity of channel i (i =x, y, z)
μV/ (V/m)2 for E-field probes
ConF = sensitivity enhancement in solution
= sensor sensitivity factors for H-field probes
aij
= carrier frequency [GHz]
Ei
= electric field strenggy of channel i in V/m
= diode compression point (DASY parameter)
Hi
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The RSS value of the field components gives the total field strength (Hermitian magnitude):
The primary field data are used to calculate the derived field units.
With
SAR = local specific absorption rate in mW/g
Etot = total field strength in V/m
σ
= conductivity in [mho/meter] or [Siemens/meter]
ρ
= equivalent tissue density in g/cm3
Note that the density is normally set to 1, to account for actual brain density rather than the density of the
simulation liquid.
8.10 Light Beam Unit
The light beam switch allows automatic “tooling” of the probe. During the process, the actual position of
the probe tip with respect to the robot arm is measured, as well as the probe length and the horizontal
probe offset. The software then corrects all movements, so that the robot coordinates are valid for the
probe tip. The repeatability of this process is better than 0.1 mm. If a position has been taught with an
aligned probe, the same position will be reached with another aligned probe within 0.1 mm, even if the
other probe has different dimensions. During probe rotations, the probe tip will keep its actual position.
8.11 Tissue Simulating Liquids
Parameters
The parameters of the tissue simulating liquid strongly influence the SAR in the liquid. The parameters
for the different frequencies are defined in the corresponding compliance standards (e.g., EN 50361, IEEE
1528-2003).
Parameter measurements
The following measurement system was applied for measuring the dielectric parameters of liquids:
• The open coax test method (e.g., HP85070 dielectric probe kit) is easy to use, but has only moderate
accuracy. It is calibrated with open, short, and deionized water and the calibrations a critical
process.
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8.12 SAM Twin Phantom
The SAM twin phantom is a fiberglass shell phantom with
2mm shell thickness (except the ear region where shell
thickness increases to 6mm). It has three measurement
areas:
• Left hand
• Right hand
• Flat phantom
The phantom table comes in two sizes: A 100 x 50 x 85 cm
(L x W x H) table for use with free standing robots (DASY6
professional system option) or as a second phantom and a
100 x 75 x 85 cm(L x W x H) table with reinforcements for
table mounted robots (DASY6 compact system option) .
The bottom plate contains three pair of bolts for locking the device holder. The device holder positions
are adjusted to the standard measurement positions in the three sections. Only one device holder is
necessary if two phantoms are used (e.g., for different liquids) A white cover is provided to tap the
phantom during o_-periods to prevent water evaporation and changes in the liquid parameters. Free space
scans of devices on the cover are possible. On the phantom top, three reference markers are provided to
identify the phantom position with respect to the robot.
The phantom can be used with the following tissue simulating liquids:
• Water-sugar based liquids can be left permanently in the phantom. Always cover the liquid if the system
is not used, otherwise the parameters will change due to water evaporation.
• Glycol based liquids should be used with care. As glycol is a softener for most plastics, the liquid should
be taken out of the phantom and the phantom should be dried when the system is not used (desirable at
least once a week).
• Do not use other organic solvents without previously testing the phantom’s compatibility.
8.13 ELI Phantom





The ELI phantom is a fiberglass shell phantom
with 2mm shell thickness (except the ear region
where shell thickness increases to 6mm). It has
one measurement area: Flat Phantom
Dimensions: Major Axis: 600mm, Minor Axis:
400mm
Filling Volume: ≈ 30 Liters
Support: DASY6: standard-size platform slot,
DASY52 stand-alone: SPEAG standard phantom
table
The phantom can be used with the following
tissue simulating liquids:
-Water-sugar based liquids can be left permanently in the phantom. Always cover the liquid if the
system is not used, otherwise the parameters will change due to water evaporation.
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-Glycol based liquids should be used with care. As glycol is a softener for most plastics, the
liquid should be taken out of the phantom and the phantom should be dried when the system is
not used (desirable at least once a week).
-Do not use other organic solvents without previously testing the phantom’s compatibility.
8.14 System Validation Kits
Each DASY system is equipped with one or more system validation kits. These units, together with the
predefined measurement procedures within the DASY software, enable the user to conduct the system
performance check and system validation. For that purpose a well-defined SAR distribution in the flat
section of the SAM twin phantom or ELI phantom is produced.
System validation kit includes a dipole, tripod holder to fix it underneath the flat phantom and a
corresponding distance holder. Dipoles are available for the variety of frequencies between 300MHz and
6 GHz (dipoles for other frequencies or media and other calibration conditions are available upon
request).
The dipoles are highly symmetric and matched at the center frequency for the specified liquid and
distance to the flat phantom (or flat section of the SAM-twin phantom). The accurate distance between
the liquid surface and the dipole center is achieved with a distance holder that snaps on the dipole.
8.15 Robot
BACL’s DASY6 system uses the Stäubli TX90XL high precision industrial robots. This robot has many
features:
• High precision (repeatability 0.02mm)
• High reliability (industrial design)
• Low maintenance costs (virtually maintenance-free due to direct drive gears; no belt drives)
• Jerk-free straight movements (brushless synchronous motors; no stepper motors)
• Low ELF interference (the closed metallic construction shields against motor control fields)
BACL’s DASY6 system uses the SP1 controller with S/N D21142607B.
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SAR Measurement Consideration
9.1
SAR Consideration
EUT Antennas Location
Left
Bottom
Top
Front View
Antenna
Right
Note1: One position was chosen for SAR testing, rear side touch to human body for normal operation.
Note 2: 2 types of Belt Clips, P/N 26895 Wire Belt Clip and BCSLEBN Spring-loaded Belt Clip, are
provided by the client. All the SAR measurements are done with the Wire Belt Clip, because the distance
between human body and EUT with Wire Belt Clip is 0.7cm which is 0.2cm smaller than the distance
with Spring-loaded Belt Clip. Please refer to the EUT external photos exhibit for details.
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SAR Measurement Results
This page summarizes the results of the performed diametric evaluation. The plots with the corresponding
SAR distributions, which reveal information about the location of the maximum SAR with respect to the
device, could be found in Appendix E.
10.1 Environmental Conditions
Temperature:
22° C
Relative Humidity:
42 %
102 kPa
ATM Pressure:
Testing was performed by Vincent Licata in SAR chamber on 2018-05-30.
10.2 Standalone SAR Results
470.1 – 607.95 MHz Band
EUT
Position
Frequency
(MHz)
Rear Side
539.025
Touch
(Mid CH)
Rear Side
470.1
Touch
(Low CH)
Rear Side
607.95
Touch
(High CH)
Corrected
Measured
Scaled
Limit
SAR
SAR (W/kg) SAR (W/kg)
(W/kg)
(W/kg)
1g Tissue
1g Tissue 1g Tissue 1g Tissue
Phantom
Output
Power
(mW)
Rated
Power
(mW)
Scaled
Body
ELI
45.92
50
1.09
0.2990
0.3256
0.337
1.6
Body
ELI
46.13
50
1.08
0.2760
0.2991
0.303
1.6
Body
ELI
46.77
50
1.07
0.1860
0.1988
0.202
1.6
Test
Type
Plot
Note1:
According to Notice 2012-DRS1203: Based on IEC 62209-2:2010 requirements, the high, mid and low
channels for the configuration with the highest SAR value must be tested regardless of the SAR value
measured.
Note2:
EUT was tested with antenna AMM19 in low channel, and with antenna AMM22 in middle and high
channels. Please refer to the EUT External Photographs exhibit and Test Setup Photos exhibit for details.
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Corrected SAR Evaluation Table
Frequency
(MHz)
Liquid
Type
Cε
△εr
Cδ
△δ
△SAR
(%)
470.100
539.025
607.950
Body
Body
Body
-0.213
-0.215
-0.216
-1.470
-2.090
-2.090
0.779
0.775
0.771
-4.790
-2.470
-2.470
-3.417
-1.466
-1.454
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Appendix A – Measurement Uncertainty
The uncertainty budget has been determined for the DASY6 measurement system and is given in the
following Table.
DASY6 Uncertainty Budget
30 MHz – 3GHz
Error Description
Uncertainty
Value
Prob.
Dist.
Div.
(c i)
1g
(c i)
10g
Std. Unc.
(1g)
Std. Unc.
(10g)
(v i)
veff
± 6.65 %
± 6.65 %
∝
Measurement System
Probe Calibration
± 6.65 %
Axial Isotropy
± 0.25 %
0.7
0.7
± 0.10 %
± 0.10 %
∝
Hemispherical Isotropy
± 1.3 %
0.7
0.7
± 0.53 %
± 0.53 %
∝
Linearity
± 0.3 %
± 0.17 %
± 0.17 %
∝
Modulation Response
± 4.8 %
± 2.77 %
± 2.77 %
∝
System Detection Limits
± 1.0 %
± 0.6 %
± 0.6 %
∝
Boundary Effects
± 1.0 %
± 0.58 %
± 0.58 %
∝
Readout Electronics
± 0.3 %
± 0.3 %
± 0.3 %
∝
Response Time
± 0.8 %
± 0.46 %
± 0.46 %
∝
Integration Time
± 2.6 %
± 1.5 %
± 1.5 %
∝
RF Ambient Noise
± 3.0 %
± 1.7 %
± 1.7 %
∝
RF Ambient Reflections
± 3.0 %
± 1.7 %
± 1.7 %
∝
Probe Positioner
± 0.04 %
± 0.0 %
± 0.0 %
∝
Probe Positioning
± 0.8 %
± 0.5 %
± 0.5 %
∝
Post-processing
± 4.0 %
± 2.3 %
± 2.3 %
∝
Test Sample Related
Device Holder
± 3.6 %
± 3.6 %
± 3.6 %
Device Positioning
± 2.9 %
± 2.9 %
± 2.9 %
145
SAR Scaling
± 0.0 %
± 0.0 %
± 0.0 %
∝
Power Drift
± 5.0 %
± 2.9 %
± 2.9 %
∝
± 3.8 %
± 3.8 %
∝
Phantom and Setup
Phantom Uncertainty
± 6.6 %
SAR Correction
Liquid Conductivity
(meas.)DAK
Liquid Permittivity
(meas.)DAK
Temp. unc. - Conductivity
(meas.)BB
Temp. unc. - Permittivity
(meas.)BB
± 1.9 %
0.84
± 1.9 %
± 1.6 %
∝
± 2.5 %
0.78
0.71
± 2.0 %
± 1.8 %
∝
± 2.5 %
0.23
0.26
± 0.6 %
± 0.7 %
∝
± 3.4 %
0.78
0.71
± 1.5 %
± 1.4 %
∝
± 0.4 %
0.23
0.26
± 0.1 %
± 0.1 %
∝
Combined Std. Uncertainty
± 10.9 %
± 10.7 %
414
Expanded STD Uncertainty
± 21.8 %
± 21.5 %
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13 Appendix C – Dipole Calibration Certificates
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14 Appendix D - Test System Verifications Scans
Test Laboratory: Bay Area Compliance Lab Corp. (BACL)
450 MHz Body System Validation
DUT: Dipole 450 MHz; Type: D450V2; Serial: BCL-180
Phantom: ELI V8.0 (20deg probe tilt)
Probe: EX3DV4 - SN3619
Electronics: DAE4 Sn530 Calibrated: 9/18/2017
Communication System Band: Generic
Frequency: 450 MHz
Medium: MBBL-600-6000v5 Medium parameters used: f = 450 MHz; σ = 0.908 S/m; εr = 56.602; ρ =
1000 kg/m3
Configuration/Unnamed procedure/Area Scan (81x321x1): Interpolated grid: dx=1.000 mm, dy=1.000
mm
Reference Value = 23.09 V/m; Power Drift = 0.07 dB
Fast SAR: SAR(1 g) = 0.455 W/kg; SAR(10 g) = 0.316 W/kg (SAR corrected for target medium)
Maximum value of SAR (interpolated) = 0.453 W/kg
Configuration/Unnamed procedure/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm,
dy=5mm, dz=5mm
Reference Value = 23.09 V/m; Power Drift = 0.09 dB
Peak SAR (extrapolated) = 0.629 W/kg
SAR(1 g) = 0.463 W/kg; SAR(10 g) = 0.313 W/kg (SAR corrected for target medium)
Maximum value of SAR (measured) = 0.463 W/kg
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Test Laboratory: Bay Area Compliance Lab Corp. (BACL)
600 MHz Body System Validation
DUT: Dipole 600 MHz; Type: D600V3; Serial: 1010
Phantom: ELI V8.0 (20deg probe tilt)
Probe: EX3DV4 - SN3619
Electronics: DAE4 Sn530 Calibrated: 9/18/2017
Communication System Band: Generic
Frequency: 600 MHz
Medium: MBBL-600-6000v5 Medium parameters used: f = 600 MHz; σ = 0.911 S/m; εr = 56.112; ρ =
1000 kg/m3
Configuration/Unnamed procedure/Area Scan (81x241x1): Interpolated grid: dx=1.000 mm, dy=1.000
mm
Reference Value = 27.20 V/m; Power Drift = -0.01 dB
Fast SAR: SAR(1 g) = 0.653 W/kg; SAR(10 g) = 0.443 W/kg (SAR corrected for target medium)
Maximum value of SAR (interpolated) = 0.671 W/kg
Configuration/Unnamed procedure/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm,
dy=5mm, dz=5mm
Reference Value = 27.20 V/m; Power Drift = 0.05 dB
Peak SAR (extrapolated) = 0.922 W/kg
SAR(1 g) = 0.661 W/kg; SAR(10 g) = 0.444 W/kg (SAR corrected for target medium)
Maximum value of SAR (measured) = 0.678 W/kg
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Appendix E – EUT Scan Results
Test Laboratory: Bay Area Compliance Lab Corp. (BACL)
Rear Side Touch DCHT Mid 539.025 MHz
DUT: Lectrosonics; Type: Digital Wireless Microphone Transmitter; Serial: 2
Phantom: ELI V8.0 (20deg probe tilt)
Probe: EX3DV4 - SN3619
Electronics: DAE4 Sn530 Calibrated: 9/18/2017
Communication System Band: Generic
Frequency: 539.025 MHz
Medium: MBBL-600-6000v5 Medium parameters used (interpolated): f = 539.025 MHz; σ = 0.914 S/m;
εr = 55.19; ρ = 1000 kg/m3
Configuration/Unnamed procedure/Area Scan (121x201x1): Interpolated grid: dx=1.000 mm,
dy=1.000 mm
Reference Value = 14.48 V/m; Power Drift = -0.28 dB
Fast SAR: SAR(1 g) = 0.300 W/kg; SAR(10 g) = 0.205 W/kg (SAR corrected for target medium)
Info: Interpolated medium parameters used for SAR evaluation.
Maximum value of SAR (interpolated) = 0.305 W/kg
Configuration/Unnamed procedure/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm,
dy=5mm, dz=5mm
Reference Value = 14.48 V/m; Power Drift = -0.29 dB
Peak SAR (extrapolated) = 0.420 W/kg
SAR(1 g) = 0.299 W/kg; SAR(10 g) = 0.200 W/kg (SAR corrected for target medium)
Info: Interpolated medium parameters used for SAR evaluation.
Maximum value of SAR (measured) = 0.305 W/kg
#1
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
Test Laboratory: Bay Area Compliance Lab Corp. (BACL)
Rear Side Touch DCHT Low 470.1 MHz
DUT: Lectrosonics; Type: Digital Wireless Microphone Transmitter; Serial: 2
Phantom: ELI V8.0 (20deg probe tilt)
Probe: EX3DV4 - SN3619
Electronics: DAE4 Sn530 Calibrated: 9/18/2017
Communication System Band: Generic
Frequency: 470.1 MHz
Medium: MBBL-600-6000v5 Medium parameters used (interpolated): f = 470.1 MHz; σ = 0.909 S/m;
εr = 55.44; ρ = 1000 kg/m3
Configuration/Unnamed procedure/Area Scan (121x221x1): Interpolated grid: dx=1.000 mm,
dy=1.000 mm
Reference Value = 13.69 V/m; Power Drift = -0.00 dB
Fast SAR: SAR(1 g) = 0.275 W/kg; SAR(10 g) = 0.190 W/kg (SAR corrected for target medium)
Info: Interpolated medium parameters used for SAR evaluation.
Maximum value of SAR (interpolated) = 0.275 W/kg
Configuration/Unnamed procedure/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm,
dy=5mm, dz=5mm
Reference Value = 13.69 V/m; Power Drift = -0.01 dB
Peak SAR (extrapolated) = 0.379 W/kg
SAR(1 g) = 0.276 W/kg; SAR(10 g) = 0.186 W/kg (SAR corrected for target medium)
Info: Interpolated medium parameters used for SAR evaluation.
Maximum value of SAR (measured) = 0.276 W/kg
#2
Report Number: R1805223-SAR
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
Test Laboratory: Bay Area Compliance Lab Corp. (BACL)
Rear Side Touch DCHT High 607.95 MHz
DUT: Lectrosonics; Type: Digital Wireless Microphone Transmitter; Serial: 2
Phantom: ELI V8.0 (20deg probe tilt)
Probe: EX3DV4 - SN3619
Electronics: DAE4 Sn530 Calibrated: 9/18/2017
Communication System Band: Generic
Frequency: 607.95 MHz
Medium: MBBL-600-6000v5 Medium parameters used (interpolated): f = 607.95 MHz; σ = 0.919 S/m;
εr = 54.94; ρ = 1000 kg/m3
Configuration/Unnamed procedure/Area Scan (121x201x1): Interpolated grid: dx=1.000 mm,
dy=1.000 mm
Reference Value = 11.55 V/m; Power Drift = -0.48 dB
Fast SAR: SAR(1 g) = 0.187 W/kg; SAR(10 g) = 0.127 W/kg (SAR corrected for target medium)
Info: Interpolated medium parameters used for SAR evaluation.
Maximum value of SAR (interpolated) = 0.193 W/kg
Configuration/Unnamed procedure/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm,
dy=5mm, dz=5mm
Reference Value = 11.55 V/m; Power Drift = -0.49 dB
Peak SAR (extrapolated) = 0.264 W/kg
SAR(1 g) = 0.186 W/kg; SAR(10 g) = 0.125 W/kg (SAR corrected for target medium)
Info: Interpolated medium parameters used for SAR evaluation.
Maximum value of SAR (measured) = 0.192 W/kg
#3
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
16 Appendix F – RF OUTPUT POWER MEASUREMENT
Channel
Frequency (MHz)
Conducted Output Power (dBm)
Low
470.100
16.64
Middle
539.025
16.62
High
607.950
16.70
Report Number: R1805223-SAR
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Lectrosonics, Inc.
FCC ID: DBZDCHT, IC: 8024A-DCHT
17 Appendix G- EUT Photographs
Please see attachments:
Annex C – EUT External Photographs
Annex D – EUT Internal Photographs
Annex E – EUT Test Setup Photographs
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18
FCC ID: DBZDCHT, IC: 8024A-DCHT
Appendix H - Informative References
[1] Federal Communications Commission, \Report and order: Guidelines for evaluating the environmental effects of
radiofrequency radiation", Tech. Rep. FCC 96-326, FCC, Washington, D.C. 20554, 1996.
[2] David L. Means Kwok Chan, Robert F. Cleveland, \Evaluating compliance with FCC guidelines for human
exposure to radiofrequency electromagnetic fields", Tech. Rep., Federal Communication Commission, O_ce of
Engineering & Technology, Washington, DC, 1997.
[3] Thomas Schmid, Oliver Egger, and Niels Kuster, \Automated E-_eld scanning system for dosimetric
assessments", IEEE Transactions on Microwave Theory and Techniques, vol. 44, pp. 105{113, Jan. 1996.
[4] Niels Kuster, Ralph K.astle, and Thomas Schmid, \Dosimetric evaluation of mobile communications
equipment with known precision", IEICE Transactions on Communications, vol. E80-B, no. 5, pp. 645{652, May
1997.
[5] CENELEC, \Considerations for evaluating of human exposure to electromagnetic fields (EMFs) from mobile
telecommunication equipment (MTE) in the frequency range 30MHz - 6GHz", Tech. Rep., CENELEC, European
Committee for Electrotechnical Standardization, Brussels, 1997.
[6] ANSI, ANSI/IEEE C95.1-1992: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio
Frequency Electromagnetic Fields, 3 kHz to 300 GHz, The Institute of Electrical and Electronics Engineers, Inc.,
New York, NY 10017, 1992.
[7] Katja Pokovic, Thomas Schmid, and Niels Kuster, \Robust setup for precise calibration of E-field probes in
tissue simulating liquids at mobile communications frequencies", in ICECOM _ 97, Dubrovnik, October 15{17,
1997, pp. 120-24.
[8] Katja Pokovic, Thomas Schmid, and Niels Kuster, \E-field probe with improved isotropy in brain simulating
liquids", in Proceedings of the ELMAR, Zadar, Croatia, 23{25 June, 1996, pp. 172-175.
[9] Volker Hombach, Klaus Meier, Michael Burkhardt, Eberhard K. uhn, and Niels Kuster, \The depen-dence of EM
energy absorption upon human head modeling at 900 MHz", IEEE Transactions on Microwave Theory and
Techniques, vol. 44, no. 10, pp. 1865-1873, Oct. 1996.
[10] Klaus Meier, Ralf Kastle, Volker Hombach, Roger Tay, and Niels Kuster, \The dependence of EM energy
absorption upon human head modeling at 1800 MHz", IEEE Transactions on Microwave Theory and Techniques,
Oct. 1997, in press.
[11] W. Gander, Computermathematik, Birkhaeuser, Basel, 1992.
[12] W. H. Press, S. A. Teukolsky,W. T. Vetterling, and B. P. Flannery, Numerical Recepies in C, The Art of
Scientific Computing, Second Edition, Cambridge University Press, 1992.Dosimetric Evaluation of Sample device,
month 1998 9
[13] NIS81 NAMAS, \The treatment of uncertainity in EMC measurement", Tech. Rep., NAMAS Executive,
National Physical Laboratory, Teddington, Middlesex, England, 1994.
[14] Barry N. Taylor and Christ E. Kuyatt, \Guidelines for evaluating and expressing the uncertainty of
NIST measurement results", Tech. Rep., National Institute of Standards and Technology, 1994.
Dosimetric Evaluation of Sample device, month 1998 10.
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19
FCC ID: DBZDCHT, IC: 8024A-DCHT
Annex A (Informative) - A2LA Electrical Testing Certificate
--- END OF REPORT ---
Report Number: R1805223-SAR
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