SAR report

FCC ID: PPD-AR5B195

RF Exposure Info

Download: PDF
FCCID_1656281

Compliance Certification Services Inc. FCC ID: PPD-AR5B195 Report No.: T120112G02-SF ANSI/IEEE Std. C95.1-1992 in accordance with the requirements of FCC Report and Order: ET Docket 93-62, and OET Bulletin 65 Supplement C FCC TEST REPORT For 802.11n-BT Combo Card Trade Name: Atheros Model:AR5B195 Issued to Qualcomm Atheros, Inc. 1700 Technology Dr San Jose California United States 95110 Issued by Compliance Certification Services Inc. No. 11, Wugong 6th Rd., Wugu Industrial Park, Taipei Hsien 248, Taiwan. http://www.ccsrf.com service@ccsrf.com. Issued Date: February 4 , 2012 Note: This report shall not be reproduced except in full, without the written approval of Compliance Certification Services Inc. This document may be altered or revised by Compliance Certification Services Inc. personnel only, and shall be noted in the revision section of the document. Page 1 Total Page: 27 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF Revision History Rev. Issue Date Revisions Effect Page Revised By 00 February 4, 2012 Initial Issue ALL Peach Chang Page 2 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF TABLE OF CONTENTS 1. CERTIFICATE OF COMPLIANCE (SAR EVALUATION) ................................................4 2. EUT DESCRIPTION ..................................................................................................................5 3. REQUIREMENTS FOR COMPLIANCE TESTING DEFINED ..........................................6 3.1 REQUIREMENTS FOR COMPLIANCE TESTING DEFINED BY THE FCC .......................6 4. DOSIMETRIC ASSESSMENT SYSTEM ................................................................................6 4.1 MEASUREMENT SYSTEM DIAGRAM .........................................................................7 4.2 SYSTEM COMPONENTS.................................................................................................8 5. EVALUATION PROCEDURES .............................................................................................11 6. MEASUREMENT UNCERTAINTY ......................................................................................15 7. EXPOSURE LIMIT ..................................................................................................................17 8. TYPICAL COMPOSITION OF INGREDIENTS FOR LIQUID TISSUE PHANTOMS .18 9. MEASUREMENT RESULTS ..................................................................................................19 9.1 TEST LIQUID CONFIRMATION ..................................................................................19 9.2 SYSTEM PERFORMANCE CHECK..............................................................................21 9.3 EUT TUNE-UP PROCEDURES AND TEST MODE .....................................................22 9.4 SAR MEASUREMENTS RESULTS ...............................................................................24 10. EQUIPMENT LIST & CALIBRATION STATUS ................................................................25 11. FACILITIES ..............................................................................................................................26 12. REFERENCES ..........................................................................................................................26 13. ATTACHMENTS ......................................................................................................................27 Page 3 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 1. CERTIFICATE OF COMPLIANCE (SAR EVALUATION) Applicant: Qualcomm Atheros, Inc. 1700 Technology Dr San Jose California United States 95110 Equipment Under Test: 802.11n-BT Combo Card Trade Name: Atheros Model Number: AR5B195 Date of Test: January 30, 2012 Device Category: PORTABLE DEVICES Exposure Category: GENERAL POPULATION/UNCONTROLLED EXPOSURE APPLICABLE STANDARDS STANDARD FCC FCC OET 65 Supplement C Deviation from Applicable Standard None TEST RESULT No non-compliance noted The device was tested by Compliance Certification Services Inc. in accordance with the measurement methods and procedures specified in OET Bulletin 65 Supplement C (Edition 01-01). The test results in this report apply only to the tested sample of the stated device/equipment. Other similar device/equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Approved by: Tested by: Jason Lin Anson Lu Section Manager Test Engineer Compliance Certification Services Inc. Compliance Certification Services Inc. Page 4 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 2. EUT DESCRIPTION Product 802.11n-BT Combo Card Trade Name Atheros IdeaPad Y580xxxx;20132xxxx;2099xxxx(x can be 0-9, a-z, A-Z, “-“or Host Model Number blank) Host Model(Test) 20132 Model Discrepancy N/A WLAN Module Trade Name Atheros WLAN Module Model Number AR5B195 802.11b: 2412 ~ 2462 MHz 802.11g: 2412 ~ 2462 MHz Frequency Range 802.11n HT20: 2412 ~ 2462 MHz 802.11n HT40: 2422 ~ 2452 MHz Bluetooth: 2402 ~2480 MHz 802.11b: 17.75 dBm 802.11g: 16.33 dBm Max. O/P Power: 802.11n HT20: 15.54 dBm (Average) 802.11n HT40: 14.67 dBm Bluetooth(GFSK): 1.34 dBm Bluetooth(8DPSK): 2.84 dBm 802.11b: 0.234 W/kg 802.11g: Covered by the worst case 802.11g mode Legacy testing Max. SAR (1g): 802.11n HT20: Covered by the worst case 802.11g mode Legacy testing 802.11n HT40: Covered by the worst case 802.11g mode Legacy testing Bluetooth: SAR test is not required, please refer to page 23. 802.11b: Direct Sequence Spread Spectrum (DSSS) Modulation Technique 802.11g: Orthogonal Frequency Division Multiplexing (OFDM) GFSK for 1Mbps; /4-DQPSK for 2Mbps; 8DPSK for 3Mbps Antenna type: Antenna Specification WLAN antenna: PIFA antenna Bluetooth antenna: PIFA antenna Remark: The sample selected for test was prototype that approximated to production product and was provided by manufacturer. Page 5 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 3. REQUIREMENTS FOR COMPLIANCE TESTING DEFINED 3.1 REQUIREMENTS FOR COMPLIANCE TESTING DEFINED BY THE FCC The US Federal Communications Commission has released the report and order “Guidelines for Evaluating the Environmental Effects of RF Radiation", ET Docket No. 93-62 in August 1996 [1]. The 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 for an uncontrolled environment and 8.0 mW/g for an occupational/controlled environment as recommended by the ANSI/IEEE standard C95.1-1992 [6]. According to the Supplement C of OET Bulletin 65 “Evaluating Compliance with FCC Guide-lines for Human Exposure to Radio frequency Electromagnetic Fields", released on Jun 29, 2001 by the FCC, 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. 4. DOSIMETRIC ASSESSMENT SYSTEM These measurements were performed with the automated near-field scanning system DASY4/DAST5 from Schmid & Partner Engineering AG (SPEAG). The system is based on a high precision robot (working range greater than 0.9 m) which positions the probes with a positional repeatability of better than ± 0.02 mm. 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: 3665 (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 ±0.25 dB. The phantom used was the SAM Twin Phantom as described in FCC supplement C, IEEE P1528 and EN50361. Page 6 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 4.1 MEASUREMENT SYSTEM DIAGRAM The DASY4/DASY5 system for performing compliance tests consists of the following items:  A standard high precision 6-axis robot (St¨aubli RX family) 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 (DAE) 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.  DASY4/DAST5 software.  Remote control with teach pendant and additional circuitry for robot safety such as warning lamps, etc.  The SAM twin phantom enabling testing left-hand and right-hand usage.  The device holder for handheld mobile phones.  Tissue simulating liquid mixed according to the given recipes.  Validation dipole kits allowing validating the proper functioning of the system. Page 7 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 4.2 SYSTEM COMPONENTS DASY4/DASY5 Measurement Server The DASY4/DASY5 measurement server is based on a PC/104 CPU board with a 166MHz low-power Pentium, 32MB chip disk and 64MB RAM. The necessary circuits for communication with either the DAE3 electronic box as well as the 16-bit AD-converter system for optical detection and digital I/O interface are contained on the DASY4/DASY5 I/O-board, which is directly connected to the PC/104 bus of the CPU board. The measurement server performs all real-time data evaluation for field measurements and surface detection, controls robot movements and handles safety operation. 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 two expansion slots which are reserved for future applications. Please note that the expansion slots do not have a standardized pinout and therefore only the expansion cards provided by SPEAG can be inserted. Expansion cards from any other supplier could seriously damage the measurement server. Calibration: No calibration required. Data Acquisition Electronics (DAE) The data acquisition electronics (DAE3) consists of a highly sensitive electrometer grade preamplifier with auto-zeroing, a channel and gain-switching multiplexer, a fast 16 bit AD converter 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. The mechanical probe mounting device includes two different sensor systems for frontal and sideways probe contacts. They are used for mechanical surface detection and probe collision detection. The input impedance of the DAE3 box is 200MOhm; the inputs are symmetrical and floating. Common mode rejection is above 80 dB. EX3DV4 Isotropic E-Field Probe for Dosimetric Measurements Construction: Symmetrical design with triangular core Built-in shielding against static charges PEEK enclosure material (resistant to organic solvents, e.g., DGBE) Calibration: Basic Broad Band Calibration in air: 10-3000 MHz. Conversion Factors (CF) for HSL 900 and HSL 1800 CF-Calibration for other liquids and frequencies upon request. Frequency: 10 MHz to > 6 GHz; Linearity: ± 0.2 dB (30 MHz to 3 GHz) Directivity: ± 0.3 dB in HSL (rotation around probe axis) ± 0.5 dB in HSL (rotation normal to probe axis) Dynamic Range: 10 µW/g to > 100 mW/g; Linearity: ± 0.2 dB (noise: typically < 1 µW/g) Page 8 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF Dimensions: Overall length: 330 mm (Tip: 20 mm) Tip diameter: 2.5 mm (Body: 12 mm) Distance from probe tip to dipole centers: 1 mm Application: High precision dosimetric measurements in any exposure scenario (e.g., very strong gradient fields). Only probe which enables compliance testing for frequencies up to 6 GHz with precision of better 30%. Interior of probe SAM Phantom (V4.0) Construction: The shell corresponds to the specifications of the Specific Anthropomorphic Mannequin (SAM) phantom defined in IEEE 1528-200X, CENELEC 50361 and IEC 62209. It enables the dosimetric evaluation of left and right hand phone usage as well as body mounted usage at the flat phantom region. A cover prevents evaporation of the liquid. Reference markings on the phantom allow the complete setup of all predefined phantom positions and measurement grids by manually teaching three points with the robot. Shell Thickness: 2 ±0.2 mm Filling Volume: Approx. 25 liters Dimensions: Height: 810mm; Length: 1000mm; Width: 500mm SAM Phantom (ELI4) Description Construction: Phantom for compliance testing of handheld and body-mounted wireless devices in the frequency range of 30 MHz to 6 GHz. ELI4 is fully compatible with the latest draft of the standard IEC 62209 Part II and all known tissue simulating liquids. ELI4 has been optimized regarding its performance and can be integrated into our standard phantom tables. A cover prevents evaporation of the liquid. Reference markings on the phantom allow installation of the complete setup, including all predefined phantom positions and measurement grids, by teaching three points. The phantom is supported by software version DASY4/DASY5.5 and higher and is compatible with all SPEAG dosimetric probes and dipoles Shell Thickness: 2.0 ± 0.2 mm (sagging: <1%) Filling Volume: Approx. 25 liters Dimensions: Major ellipse axis: 600 mm Minor axis: 400 mm 500mm Page 9 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF Device Holder for SAM Twin Phantom Construction: In combination with the Twin SAM Phantom V4.0 or Twin SAM, the Mounting Device (made from POM) enables the rotation of the mounted transmitter in spherical coordinates, whereby the rotation point is the ear opening. The devices can be easily and accurately positioned according to IEC, IEEE, CENELEC, FCC or other specifications. The device holder can be locked at different phantom locations (left head, right head, and flat phantom). System Validation Kits for SAM Phantom (V4.0) Construction: Symmetrical dipole with l/4 balun Enables measurement of feedpoint impedance with NWA Matched for use near flat phantoms filled with brain simulating solutions Includes distance holder and tripod adaptor. Frequency: 450, 900, 1800, 2450, 5800 MHz Return loss: > 20 dB at specified validation position Power capability: > 100 W (f < 1GHz); > 40 W (f > 1GHz) Dimensions: D450V2: dipole length: 270 mm; overall height: 330 mm D835V2: dipole length: 161 mm; overall height: 340 mm D900V2: dipole length: 148.5 mm; overall height: 340 mm D1800V2: dipole length: 72.5 mm; overall height: 300 mm D1900V2: dipole length: 67.7 mm; overall height: 300 mm D1900V3: dipole length: 67.0 mm; overall height: 300 mm D2450V2: dipole length: 51.5 mm; overall height: 290 mm D5GHzV2: dipole length: 20.6 mm; overall height: 300 mm System Validation Kits for ELI4 phantom Construction: Symmetrical dipole with l/4 balun Enables measurement of feedpoint impedance with NWA Matched for use near flat phantoms filled with brain simulating solutions Includes distance holder and tripod adaptor. Frequency: 450, 900, 1800, 2450, 5800 MHz Return loss: > 20 dB at specified validation position Power capability: > 100 W (f < 1GHz); > 40 W (f > 1GHz) Dimensions: D450V2: dipole length: 270 mm; overall height: 330 mm D835V2: dipole length: 161 mm; overall height: 340 mm D900V2: dipole length: 148.5 mm; overall height: 340 mm D1800V2: dipole length: 72.5 mm; overall height: 300 mm D1900V2: dipole length: 67.7 mm; overall height: 300 mm D1900V3: dipole length: 67.0 mm; overall height: 300 mm D2450V2: dipole length: 51.5 mm; overall height: 290 mm D5GHzV2: dipole length: 20.6 mm; overall height: 300 mm Page 10 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 5. EVALUATION PROCEDURES DATA EVALUATION The DASY4/DAST5 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 Normi, ai0, ai1, ai2 - Conversion factor ConvFi - Diode compression point dcpi Device parameters: - Frequency f - Crest factor cf Media parameters: - Conductivity  - Density  These parameters must be set correctly in the software. They can be found in the component documents or be imported into the software from the configuration files issued for the DASY components. In the direct measuring mode of the multi-meter 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: 2 cf V U U i i i  dcp i with Vi = Compensated signal of channel i (i = x, y, z) Ui = Input signal of channel i (i = x, y, z) cf = Crest factor of exciting field (DASY parameter) dcpi = Diode compression point (DASY parameter) From the compensated input signals the primary field data for each channel can be evaluated: E-field probes: V E  i i Norm  ConvF i 2 H-field probes: a a f a f i10 i11 i12 H i  Vi  f with Vi = Compensated signal of channel i (i = x, y, z) Normi = Sensor sensitivity of channel i (i = x, y, z) V/(V/m)2 for E0field Probes ConvF = Sensitivity enhancement in solution aij = Sensor sensitivity factors for H-field probes f = Carrier frequency (GHz) Ei = Electric field strength of channel i in V/m Hi = Magnetic field strength of channel i in A/m Page 11 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF The RSS value of the field components gives the total field strength (Hermitian magnitude): 2 2 2 E tot  E E E x y z The primary field data are used to calculate the derived field units. 2  SAR  E  tot  1000 with SAR = local specific absorption rate in mW/g Etot = total field strength in V/m  = conductivity in [mho/m] or [Siemens/m]  = equivalent tissue density in g/cm3 Note that the density is normally set to 1 (or 1.06), to account for actual brain density rather than the density of the simulation liquid. The power flow density is calculated assuming the excitation field as a free space field. 2  E tot or P 2  H tot  37.7 P pwe pwe 3770 with Ppwe = Equivalent power density of a plane wave in mW/cm2 Etot = total electric field strength in V/m Htot = total magnetic field strength in A/m Page 12 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF SAR MEASUREMENT PROCEDURES The procedure for assessing the peak spatial-average SAR value consists of the following steps:  Power Reference Measurement The reference and drift 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.  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 DASY4/DAST5 software can find the maximum locations even in relatively coarse grids. The scan 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 was at to 15 mm by 15 mm and can be edited by a user.  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 7x7x9 points within a cube whose base faces are centered around the maximum found in a preceding area scan job within the same procedure. If the preceding Area Scan job indicates more then one maximum, the number of Zoom Scans has to be enlarged accordingly (The default number inserted is 1).  Power Drift measurement The drift job measures the field at the same location as the most recent reference job within the same procedure, and with the same settings. The drift measurement gives the field difference in dB from the reading conducted within the last 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. In the properties of the Drift job, the user can specify a limit for the drift and have DASY4/DAST5 software stop the measurements if this limit is exceeded.  Z-Scan The Z Scan job measures points along a vertical straight line. The line runs along the Z-axis of a one- dimensional grid. A user can anchor the grid 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. Page 13 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF SPATIAL PEAK SAR EVALUATION The procedure for spatial peak SAR evaluation has been implemented according to the IEEE1529 standard. It can be conducted for 1 g and 10 g. The DASY4/DAST5 system allows evaluations that combine measured data and robot positions, such as: • maximum search • extrapolation • boundary correction • peak search for averaged SAR During a maximum search, global and local maximum searches are automatically performed in 2-D after each Area Scan measurement with at least 6 measurement points. It is based on the evaluation of the local SAR gradient calculated by the Quadratic Shepard’s method. The algorithm will find the global maximum and all local maxima within -2 dB of the global maxima for all SAR distributions. 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. Extrapolation routines require at least 10 measurement points in 3-D space. They are used in the Cube Scan to obtain SAR values between the lowest measurement points and the inner phantom surface. The routine uses the modified Quadratic Shepard’s method for extrapolation. For a grid using 7x7x9 measurement points with 5mm resolution amounting to 441 measurement points, the uncertainty of the extrapolation routines is less than 1% for 1 g and 10 g cubes. Boundary effect For measurements in the immediate vicinity of a phantom surface, the field coupling effects between the probe and the boundary influence the probe characteristics. Boundary effect errors of different dosimetric probe types have been analyzed by measurements and using a numerical probe model. As expected, both methods showed an enhanced sensitivity in the immediate vicinity of the boundary. The effect strongly depends on the probe dimensions and disappears with increasing distance from the boundary. The sensitivity can be approximately given as: Since the decay of the boundary effect dominates for small probes (a<<), the cos-term can be omitted. Factors Sb (parameter Alpha in the DASY4/DAST5 software) and a (parameter Delta in the DASY4/DAST5 software) are assessed during probe calibration and used for numerical compensation of the boundary effect. Several simulations and measurements have confirmed that the compensation is valid for different field and boundary configurations. This simple compensation procedure can largely reduce the probe uncertainty near boundaries. It works well as long as: • the boundary curvature is small • the probe axis is angled less than 30_ to the boundary normal • the distance between probe and boundary is larger than 25% of the probe diameter • the probe is symmetric (all sensors have the same offset from the probe tip) Since all of these requirements are fulfilled in a DASY4/DAST5 system, the correction of the probe boundary effect in the vicinity of the phantom surface is performed in a fully automated manner via the measurement data extraction during postprocessing. Page 14 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 6. MEASUREMENT UNCERTAINTY DASY4: UNCERTAINTY BUDGE ACCORDING TO IEEE P1528 Standard Uncertainty Probability Error Description Divisor C1 1g unc.(1g/10g) V1 or Veff Value ±% distribution ±% Measurement System Probe calibration ±4.8 normal 1 1 ±4.8 ∞ 1/2 Axial isotropy of probe ±4.6 rectangular √3 (1-Cp) ±1.9 ∞ 1/2 Sph. Isotropy of probe ±9.7 rectangular √3 (Cp) ±3.9 ∞ Probe linearity ±4.5 rectangular √3 1 ±2.7 ∞ Detection Limit ±0.9 rectangular √3 1 ±0.6 ∞ Boundary effects ±8.5 rectangular √3 1 ±4.8 ∞ Readoutelectronics ±1.0 normal 1 1 ±1.0 ∞ Response time ±0.9 rectangular √3 1 ±0.5 ∞ Integration time ±1.2 rectangular √3 1 ±0.8 ∞ Mech Constrains of robot ±0.5 rectangular √3 1 ±0.2 ∞ Probe positioning ±2.7 rectangular √3 1 ±1.7 ∞ Extrap. And integration ±4.0 rectangular √3 1 ±2.3 ∞ RF ambient conditiona ±0.54 rectangular √3 1 ±0.43 ∞ Test Sample Related Device positioning ±2.2 normal 1 1 ±2.23 11 Device holder uncertainty ±5 normal 1 1 ±5.0 7 Power drift ±5 rectangular √3 1 ±2.9 ∞ Phantom and Set up Phantom uncertainty ±4 rectangular √3 1 ±2.3 ∞ Liquid conductivity ±5 rectangular √3 0.6 ±1.7 ∞ Liquid conductivity ±5 rectangular √3 0.6 ±3.5/1.7 ∞ Liquid permittivity ±5 rectangular √3 0.6 ±1.7 ∞ Liquid permittivity ±5 rectangular √3 0.6 ±1.7 ∞ Combined Standard ±12.14/11.76 Uncertainty Coverage Factor for 95% kp=2 Expanded Standard ±24.29/23.51 Uncertainty Table: Worst-case uncertainty for DASY4 assessed according to IEEE P1528. The budge is valid for the frequency range 300 MHz to 3G Hz and represents a worst-case analysis. Page 15 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF Dasy5: UNCERTAINTY BUDGE ACCORDING TO IEEE P1528 Standard Uncertainty Probability Error Description Value ±% Divisor C1 1g unc.(1g/10g) V1 or Veff distribution ±% Measurement System Probe calibration ±5.9 normal 1 1 ±5.9 ∞ Axial isotropy of probe ±4.7 rectangular √3 (1-Cp)1/2 ±1.9 ∞ 1/2 Sph. Isotropy of probe ±9.6 rectangular √3 (Cp) ±3.9 ∞ Probe linearity ±4.7 rectangular √3 1 ±2.7 ∞ Detection Limit ±1.0 rectangular √3 1 ±0.6 ∞ Boundary effects ±1.0 rectangular √3 1 ±0.6 ∞ Readoutelectronics ±0.3 normal 1 1 ±0.3 ∞ Response time ±0.8 rectangular √3 1 ±0.5 ∞ Integration time ±2.6 rectangular √3 1 ±1.5 ∞ Probe positioning ±0.4 rectangular √3 1 ±0.2 ∞ Extrap. And integration ±4.0 rectangular √3 1 ±2.3 ∞ RF ambient conditiona ±3.0 rectangular √3 1 ±1.7 ∞ RF ambient conditiona ±3.0 rectangular √3 1 ±1.7 ∞ Test Sample Related Device positioning ±2.9 normal 1 1 ±2.9 145 Device holder uncertainty ±3.6 normal 1 1 ±3.6 5 Power drift ±5.0 rectangular √3 1 ±2.9 ∞ Phantom and Set up Phantom uncertainty ±4.0 rectangular √3 1 ±2.3 ∞ Liquid conductivity ±5.0 rectangular √3 0.6 ±1.8/1.2 ∞ Liquid conductivity ±1.5 rectangular √3 0.6 ±0.6 ∞ Liquid permittivity ±5.0 rectangular √3 0.6 ±1.7/1.4 ∞ Liquid permittivity ±1.0 rectangular √3 0.6 ±0.4 ∞ Combined Standard Uncertainty ±10.375/±10.112 Coverage Factor for 95% kp=2 Expanded Standard Uncertainty ±20.75/±19.23 Table: Worst-case uncertainty for DASY5 assessed according to IEEE P1528. The budge is valid for the frequency range 300 MHz to 3G Hz and represents a worst-case analysis. Page 16 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 7. EXPOSURE LIMIT (A).Limits for Occupational/Controlled Exposure (W/kg) Whole-Body Partial-Body Hands, Wrists, Feet and Ankles 0.4 8.0 2.0 (B). Limits for General Population/Uncontrolled Exposure (W/kg) Whole-Body Partial-Body Hands, Wrists, Feet and Ankles 0.08 1.6 4.0 NOTE: Whole-Body SAR is averaged over the entire body, partial-body SAR is averaged over any 1 gram of tissue defined as a tissue volume in the shape of a cube. SAR for hands, wrists, feet and ankles is averaged over any 10 grams of tissue defined as a tissue volume in the shape of a cube. Population/Uncontrolled Environments: are defined as locations where there is the exposure of individuals 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). NOTE GENERAL POPULATION/UNCONTROLLED EXPOSURE PARTIAL BODY LIMIT 1.6 W/kg Page 17 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 8. TYPICAL COMPOSITION OF INGREDIENTS FOR LIQUID TISSUE PHANTOMS The following tissue formulations are provided for reference only as some of the parameters have not been thoroughly verified. The composition of ingredients may be modified accordingly to achieve the desired target tissue parameters required for routine SAR evaluation. Ingredients Frequency (MHz) (% by weight) 450 835 915 1900 2450 Tissue Type Head Body Head Body Head Body Head Body Head Body Water 38.56 51.16 41.45 52.4 41.05 56.0 54.9 40.4 62.7 73.2 Salt (NaCl) 3.95 1.49 1.45 1.4 1.35 0.76 0.18 0.5 0.5 0.04 Sugar 56.32 46.78 56.0 45.0 56.5 41.76 0.0 58.0 0.0 0.0 HEC 0.98 0.52 1.0 1.0 1.0 1.21 0.0 1.0 0.0 0.0 Bactericide 0.19 0.05 0.1 0.1 0.1 0.27 0.0 0.1 0.0 0.0 Triton X-100 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 36.8 0.0 DGBE 0.0 0.0 0.0 0.0 0.0 0.0 44.92 0.0 0.0 26.7 Dielectric Constant 43.42 58.0 42.54 56.1 42.0 56.8 39.9 54.0 39.8 52.5 Conductivity (S/m) 0.85 0.83 0.91 0.95 1.0 1.07 1.42 1.45 1.88 1.78 Salt: 99+% Pure Sodium Chloride Sugar: 98+% Pure Sucrose Water: De-ionized, 16 M+ resistivity HEC: Hydroxyethyl Cellulose DGBE: 99+% Di(ethylene glycol) butyl ether, [2-(2-butoxyethoxy)ethanol] Triton X-100 (ultra pure): Polyethylene glycol mono [4-(1, 1, 3, 3-tetramethylbutyl)phenyl]ether The Device is not supplied with any specific body-worn accessories, the devices is tested at a 0cm(0mm, directed contact to phantom) to demonstrate body-worn accessory SAR compliance. The setup Figure as below: Flat phantom Flat phantom EUT(Front Up) EUT(Back Up) 0mm/ 0mm/ directed directed contact contact Page 18 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 9. MEASUREMENT RESULTS 9.1 TEST LIQUID CONFIRMATION SIMULATING LIQUIDS PARAMETER CHECK The simulating liquids should be checked at the beginning of a series of SAR measurements to determine of the dielectric parameters are within the tolerances of the specified target values The relative permittivity and conductivity of the tissue material should be within  5% of the values given in the table below. 5% may not be easily achieved at certain frequencies. Under such circumstances, 10% tolerance may be used until more precise tissue recipes are available IEEE SCC-34/SC-2 P1528 RECOMMENDED TISSUE DIELECTRIC PARAMETERS The head tissue dielectric parameters recommended by the IEEE SCC-34/SC-2 in P1528 have been incorporated in the following table. These head parameters are derived from planar layer models simulating the highest expected SAR for the dielectric properties and tissue thickness variations in a human head. Other head and body tissue parameters that have not been specified in P1528 are derived from the tissue dielectric parameters computed from the 4-Cole-Cole equations and extrapolated according to the head parameters specified in P1528 Target Frequency Head Body (MHz) r  (S/m) r  (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 Page 19 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF SIMULATING LIQUIDS PARAMETER CHECK RESULTS Date: January 30, 2012 Ambient condition: Temperature 24.2C; Relative humidity: 53% Body Simulating Liquid Parameters Target Measured Deviation[%] Limited[%] f (MHz) Temp. [°C] Depth (cm) Permitivity: 52.80 51.59 -2.29 ±5 2412.00 23.20 15.00 Conductivity: 1.91 1.88 -1.78 ±5 Permitivity: 52.70 51.54 -2.21 ±5 2437.00 23.20 15.00 Conductivity: 1.94 1.92 -0.93 ±5 Permitivity: 52.70 51.57 -2.14 ±5 2450.00 23.20 15.00 Conductivity: 1.95 1.94 -0.41 ±5 Permitivity: 52.70 51.58 -2.12 ±5 2462.00 23.20 15.00 Conductivity: 1.97 1.95 -1.02 ±5 2450MHz Body liquid 15cm Page 20 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 9.2 SYSTEM PERFORMANCE CHECK The system performance check is performed prior to any usage of the system in order to guarantee reproducible results. The system performance check verifies that the system operates within its specifications. The system performance check results are tabulated below. And also the corresponding SAR plot is attached as well in the SAR plots files. SYSTEM PERFORMANCE CHECK MEASUREMENT CONDITIONS  The measurements were performed in the flat section of the SAM twin phantom filled with Body simulating liquid of the following parameters.  The DAST4 system with an E-field probe EX3DV4 SN:3665 was used for the measurements.  The dipole was mounted on the small tripod so that the dipole feed point was positioned below the center marking of the flat phantom section and the dipole was oriented parallel to the body axis (the long side of the phantom). The standard measuring distance was 15 mm (below 1 GHz) and 10 mm (above 1 GHz) from dipole center to the simulating liquid surface.  The coarse grid with a grid spacing of 10mm was aligned with the dipole.  Special 7x7x7 fine cube was chosen for cube integration (dx= 5 mm, dy= 5 mm, dz= 5 mm).  Distance between probe sensors and phantom surface was set to 2.5 mm.  The dipole input power (forward power) was 250 mW3%.  The results are normalized to 1 W input power. Reference SAR values The reference SAR values were using measurement results indicated in the dipole calibration document (see table below) Frequency Local SAR at Surface Local SAR at Surface 1g SAR 10g SAR (MHz) (Above Feed Point) (y = 2cm offset from feed point) 900 10.3 6.57 16.4 5.4 1800 38.2 20.3 69.5 6.8 2450(Body) 51.2 24 128.8 N/A SYSTEM PERFORMANCE CHECK RESULTS Dipole: D2450V2 SN: 728 Date: January 30, 2012 Ambient condition: Temperature 24.2C; Relative humidity: 53% B od y S im u la tin g Liq u id P a ra m eters T a rget M ea su red D evia tion [% ] Lim ited [% ] f(M H z) T em p . [°C ] D ep th [c m ] P erm itivity: 5 2 .7 0 5 1 .5 7 -2 .1 4 ± 5 2 4 5 0 .0 0 2 3 .2 0 1 5 .0 0 C on d u ctivity: 1 .9 5 1 .9 4 -0 .4 1 ± 5 1g SAR : 5 1 .2 0 5 3 .6 0 4 .6 9 ± 5 ps. 1g SAR is equal 4x13.4(250mW forward power SAR value) Page 21 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 9.3 EUT TUNE-UP PROCEDURES AND TEST MODE o Software used to control the EUT for staying in continuous transmitting mode was programmed. o The output power setting is according to the original filing that the lower data rate is presented as worse case as they resulted in the highest output power. o The output power(dBm) we measured before and after SAR test in different channel o During SAR test, test maximum output power channel first. o If the SAR measured on the highest output channel is < 50% of the SAR limit, SAR evaluation for the other required channels is unnecessary. o This module is a WLAN with BT combo card. Main antenna is designated for 802.11 b/g/n mode and as for aux antenna, it is the TX for 802.11n and Bluetooth. WLAN and Bluetooth cannot transmit simultaneously. Output powers are measured as below: 802.11b / 802.11g Conducted Power (Avg)(dBm): Mode 802.11b 1M 802.11b 1M 802.11g 6M 802.11g 6M Frequency before SAR test after SAR test before SAR test after SAR test 1(2412 MHz) 17.45 17.40 13.96 Covered by the worst case 802.11b 6(2437 MHz) 17.75 17.66 16.33 mode Legacy 11(2462 MHz) 16.99 16.81 13.27 testing. Ps. 802.11b maximum output power 17.75dBm(59.566mW ) is higher than 24.62mW(60/f), so 802.11b SAR test is required. 802.11n HT20 Conducted Power (Avg)(dBm): Mode 802.11n HT20 802.11n HT20 6.5M 6.5M Frequency before SAR test after SAR test 1(2412 MHz) 12.20 Covered by the worst case 6(2437 MHz) 15.54 802.11b mode 11(2462 MHz) 12.61 Legacy testing. 802.11n HT40 Conducted Power (Avg)(dBm): Mode 802.11n HT40 802.11n HT40 13.5M 13.5M Frequency before SAR test after SAR test 3(2422 MHz) 11.69 Covered by the worst case 6(2437 MHz) 14.67 802.11b mode 9(2452 MHz) 11.92 Legacy testing. PS. KDB 248227 - SAR is not required for 802.11g /HT20/HT40 channels when the maximum average output power is less than 1/4 dB higher than that measured on the corresponding 802.11b channels. Page 22 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF Bluetooth Conducted Power (Avg)(dBm): Mode 1M 3M Frequency GFSK 8DPSK 2402 MHz 0.78 2.66 2441 MHz 1.17 2.78 2480 MHz 1.34 2.84 Ps. Bluetooth maximum output power 2.84dBm(1.923mW ) is less than 24.194mW(60/f), so Bluetooth SAR test is not required. And the antenna-to-antenna distance is 28.4cm which is >5cm , and Bluetooth and WLAN cannot transmit simultaneously; therefore, co-location SAR is not required per KDB616217. Page 23 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 9.4 SAR MEASUREMENTS RESULTS Body position: Test mode: 802.11b, Duty Cycle: 100%, Rate= 1M, Crest Factor: 1 Depth of liquid: 15.0 cm Frequency Liquid SAR (1g) Limit EUT Position Antenna Channel MHz Temp_C (W/kg) (W/kg) Bottom Flat main 6 2437 23.2 0.234 1.6 Notes: 1) Please refer to attachment for the result presentation in plot format. Page 24 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 10. EQUIPMENT LIST & CALIBRATION STATUS Calibration Calibration Name of Equipment Manufacturer Type/Model Serial Number Cycle(days) Due S-Parameter Network Analyzer Agilent E8358A US40260243 365 07/04/2012 Electronic Probe kit Hewlett Packard 85070D N/A N/A N/A Amplifier Mini-Circuit ZVE-8G 665500309 N/A N/A Amplifier Mini-Circuit ZHL-1724HLN D072602#2 N/A N/A DC Power generator ABM 8301HD N/A N/A N/A Attenuator Mini-Circuit BW-S20W5 N/A N/A N/A Directional Coupler Agilent 778D MY48220487 N/A N/A Thermometer Amarell 4046 25060 3650 10/02/2014 Signal Generator Agilent 83630B 3844A01022 365 08/01/2012 Spectrum Analyzer Agilent E4446A US42510252 365 11/04/2012 Power Meter Anritsu ML2495A 1012009 365 03/27/2012 Power Sensor Anritsu MA2411B 0917072 365 03/08/2012 Data Acquisition Electronics (DAE) SPEAG DAE4 877 365 03/17/2012 Data Acquisition Electronics (DAE) SPEAG DAE4 558 365 07/25/2012 Dosimetric E-Field Probe SPEAG EX3DV4 3665 365 04/18/2012 Dosimetric E-Field Probe SPEAG EX3DV4 3554 365 09/28/2012 2450 MHz System Validation Dipole SPEAG D2450V2 728 365 11/21/2012 Probe Alignment Unit SPEAG LB (V2) 348 N/A N/A Robot Staubli TX60L F08/5A6GA1/ A/01 N/A N/A SAM Twin Phantom V4.0 SPEAG N/A N/A N/A N/A Devices Holder SPEAG N/A N/A N/A N/A Head/ Muscle 2450 MHz CCS H/M 2450A N/A N/A N/A Page 25 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 11. FACILITIES All measurement facilities used to collect the measurement data are located at No. 81-1, Lane 210, Bade Rd. 2, Luchu Hsiang, Taoyuan Hsien, Taiwan, R.O.C. No.11, Wu-Gong 6th Rd., Wugu Industrial Park, New Taipei City 248, Taiwan (R.O.C.) No. 199, Chunghsen Road, Hsintien City, Taipei Hsien, Taiwan, R.O.C. 12. REFERENCES [1] Federal Communications Commission, \Report and order: Guidelines for evaluating the environ-mental 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 Commision, 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-_eld probes in tissue simulating liquids at mobile communications frequencies", in ICECOM _ 97, Dubrovnik, October 15{17, 1997, pp. 120{124. [8] Katja Pokovic, Thomas Schmid, and Niels Kuster, \E-_eld 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 dependence of EM energy absorption upon human head modeling at 900 MHz", IEEE Transactions onMicrowave 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 Page 26 Rev. 00

Compliance Certification Services Inc. Report No.: T120112G02-SF 13. ATTACHMENTS Exhibit Content 1 System Performance Check Plots 2 SAR Test Plots 3 Probe_EX3DV4_sn3665_20110419c 4 Dipole_D2450v2_sn728_20111122c 5 Thermometer END OF REPORT Page 27 Rev. 00


Document Created: 2012-03-14 16:14:43
Document Modified: 2012-03-14 16:14:43
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC