Test report new additional positions

FCC ID: N7NAC750

RF Exposure Info

Download: PDF
FCCID_239709

                in accordance with the requirements of
FCC Report and Order: ET Docket 93-62, and OET Bulletin 65 Supplement C

                                  for

      SIERRA WIRELESS TRI-BAND GSM/GPRS PC CARD
          (This report covers only GPRS mode SAR)

                       MODEL: AirCard 750

                        FCC ID: N7NAC750

                           APRIL 25, 2002

                     REPORT NO: 02U1267-1

                          Prepared for
                     SIERRA WIRELESS INC
              13811 WIRELESS WAY RICHMOND BC
                       CANADA, V5L 2N3

                        Prepared by
            COMPLIANCE CERTIFICATION SERVICES
                  561F MONTEREY ROAD,
               MORGAN HILL, CA 95037, USA
                    TEL: (408) 463-0885


REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750




         CERTIFICATE OF COMPLIANCE (SAR EVALUATION)
                                            Dates of Tests: April 25, 2002
                                                 Report No: 02U1267-1
 APPLICANT:                               SIERRA WIRELESS INC
                                          13811 WIRELESS WAY, RICHMOND BRITISH COLUMBIA
                                          V5L 2N3, CANADA
 TRADE NAME:                              Sierra Wireless AirCard 750
 MODEL:                                   AirCard 750
 FCC ID:                                  N7NAC750
 DEVICE CATEGORY:                         MOBILE DEVICES
 EXPOSURE CATEGORY:                       GENERAL POPULATION/UNCONTROLLED EXPOSURE

 Test Sample is a:               Production unit
 Operating Mode:                 Maximum continuous output
 Tx Frequency:                   1850 – 1910 MHz
 Rx Frequency:                   1930 – 1990 MHz
 Max. Output Power (Conducted): 25.1 dBm (1850.2 MHz)
 Max. SAR (1g):                  0.609 mW/g (1850.2 MHz)
 Application Type:               Certification
 FCC Rule Part(s):               § Part 24 (E)




 This wireless mobile device has been shown to be capable of compliance for localized specific
 absorption rate (SAR) for uncontrolled environment/general population exposure limits
 specified in ANSI/IEEE Std. C95.1-1992 and had been tested in accordance with the
 measurement procedures specified in FCC OET 65 Supplement C (released on 6/29/2001 see
 Test Report).
 I attest to the accuracy of data. All measurements reported herein were performed by me or
 were made under my supervision and are correct to the best of my knowledge and belief. I
 assume full responsibility for the completeness of these measurements and vouch for the
 qualifications of all persons taking them.




   Steve Cheng
   EMC Engineering Manager



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REPORT NO:              02U1267-1                   DATE: April 25, 2002                                            FCC ID: N7NAC750




                                                        TABLE OF CONTENT


   1.       EUT DESCRIPTION..............................................................................................4
   2.       REQUIREMENTS FOR COMPLIANCE TESTING DEFINED BY THE FCC ...............5
   3.       DOSIMETRIC ASSESSMENT SETUP ....................................................................5
   3.1.     MEASUREMENT SYSTEM DIAGRAM .............................................................................................................6
   3.2.     SYSTEM COMPONENTS ..................................................................................................................................7
   3.3.     EUT ARRANGEMENT ......................................................................................................................................11
   3.4.     MEASUREMENT UNCERTAINTY...................................................................................................................12
   4.       EUT TUNE-UP PROCEDURE..............................................................................12
   5.       EVALUATION PROCEDURE ..............................................................................13
   5.1.     SYSTEM ACCURACY VERIFICATION...........................................................................................................13
   5.2.     SAR EVALUATION PROCEDURE ..................................................................................................................14
   5.3.     EXPOSURE LIMIT ............................................................................................................................................14
   6.       MEASUREMENT RESULTS................................................................................15
   7.       EUT PHOTO ......................................................................................................16
   8.       EQUIPMENTS LIST & CALIBRATION STATUS ...................................................17
   9.       REFERENCES ...................................................................................................18
   10.      ATTACHMENT ...................................................................................................19




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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750



1. EUT DESCRIPTION
 APPLICANT:                               SIERRA WIRELESS INC
                                          13811 WIRELESS WAY, RICHMOND BRITISH COLUMBIA
                                          V5L 2N3, CANADA
 TRADE NAME:                              Sierra Wireless AirCard 750
 MODEL:                                   AirCard 750
 FCC ID:                                  N7NAC750
 DEVICE CATEGORY:                         MOBILE DEVICES
 EXPOSURE CATEGORY:                       GENERAL POPULATION/UNCONTROLLED EXPOSURE

 Test Sample is a:               Production unit
 Operating Mode:                 Maximum continuous output
 Tx Frequency:                   1850 – 1910 MHz
 Rx Frequency:                   1930 – 1990 MHz
 Max. Output Power (Conducted): 25.1 dBm (1850.2 MHz)
 Max. SAR (1g):                  0.609 mW/g (1850.2 MHz)
 Application Type:               Certification
 FCC Rule Part(s):               § Part 24 (E)
 Antenna Type:                   Whip
 Antenna Dimensions: Approx.: Length = 75 mm; Diameter = 1.5 mm


 Battery option:                 N/A


 1    Specific Absorption Rate (SAR) is a measure of the rate of energy absorption due to exposure to an RF
      transmitting source (wireless portable device).
 2    IEEE/ANSI Std. C95.1-1992 limits are used to determine compliance with FCC ET Docket 93-62.




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REPORT NO:             02U1267-1              DATE: April 25, 2002                               FCC ID: N7NAC750



2. 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.
3. DOSIMETRIC ASSESSMENT SETUP
     These measurements were performed with the automated near-field scanning system DASY3 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 ET3DV6 SN: 1577 (manufactured by SPEAG), designed in the classical triangular
     configuration [3] and optimized for dosimetric evaluation. The probe has been calibrated according to
     the procedure described in [7] with accuracy of better than ±10%. The spherical isotropy was
     evaluated with the procedure described in [8] 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.

     The Tissue simulation liquid used for each test is in according with the FCC OET65 supplement C as
     listed below.
       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




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REPORT NO:           02U1267-1             DATE: April 25, 2002                                 FCC ID: N7NAC750



     3.1. MEASUREMENT SYSTEM DIAGRAM


                                                                                                                Electro-optical coupler
                      PC


                                                                                                     Opt link
                                                                                                                   DAE

                                                                                     Opt link
                                                                                                                   Field probe
                                                                                                                   (with surface detect)


                      DSP        Warning Remote Teach
                                  Lamp Control Panel                                                                Phantoms

         Serial
                                                                                                                   Tissue simulating
                                                                                                                   liquid

                                                                                                                    Device under test

                                                                                                                   Device holder
                                      Controller
                                        Box
                    Robot
                   Controller
                                                        Option




     The DASY3 system for performing compliance tests consist of the following items:

     1. A standard high precision 6-axis robot (Stäubli RX family) with controller and software.
     2. An arm extension for accommodating the data acquisition electronics (DAE).
     3. 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.
     4. A data acquisition electronic (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.
     5. A unit to operate the optical surface detector, which is connected to the EOC.
     6. The Electro-optical coupler (EOC) performs the conversion from the optical into a digital electric
         signal of the DAE. The EOC is connected to the PC plug-in card.
     7. The functions of the PC plug-in card based on a DSP is to perform the time critical task such as
         signal filtering, surveillance of the robot operation fast movement interrupts.
     8. A computer operating Windows 95 or larger
     9. DASY3 software
     10. Remote control with teaches pendant and additional circuitry for robot safety such as warning
         lamps, etc.
     11. The generic twin phantom enabling testing left-hand and right-hand usage.
     12. The device holder for handheld EUT.
     13. Tissue simulating liquid mixed according to the given recipes (see Application Note).
     14. System validation dipoles to validate the proper functioning of the system.




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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750




     3.2. SYSTEM COMPONENTS

     ET3DV5 Probe Specification
     Construction Symmetrical design with triangular core
     Built-in optical fiber for surface detection System
     Built-in shielding against static charges
     Calibration In air from 10 MHz to 2.5 GHz
     In brain and muscle simulating tissue at
     Frequencies of 450 MHz, 900 MHz and
     1.8 GHz (accuracy ± 8%)
     Frequency 10 MHz to > 6 GHz; Linearity: ± 0.2 dB
     (30 MHz to 3 GHz)
     Directivity ± 0.2 dB in brain tissue (rotation around probe axis)
     ± 0.4 dB in brain tissue (rotation normal probe axis)
     Dynamic 5 mW/g to > 100 mW/g;
     Range Linearity: ± 0.2 dB
     Surface ± 0.2 mm repeatability in air and clear liquids
     Detection over diffuse reflecting surfaces.
     Dimensions Overall length: 330 mm                                                    Photograph of the probe
     Tip length: 16 mm
     Body diameter: 12 mm
     Tip diameter: 6.8 mm
     Distance from probe tip to dipole centers: 2.7 mm
     Application General dosimetric up to 3 GHz
     Compliance tests of mobile phones
     Fast automatic scanning in arbitrary phantoms


     The SAR measurements were conducted with the dosimetric probe
     ET3DV6 designed in the classical triangular configuration and optimized
     for dosimetric evaluation. The probe is constructed using the thick film
     technique; with printed resistive lines on ceramic substrates. The probe is
     equipped with an optical multi-fiber line ending at the front of the probe
     tip. It is connected to the EOC box on the robot arm and provides an
     automatic detection of the phantom surface. Half of the fibers are
     connected to a pulsed infrared transmitter, the other half to a
     synchronized receiver. As the probe approaches the surface, the
     reflection from the surface produces a coupling from the transmitting to
     the receiving fibers. This reflection increases first during the approach,
     reaches maximum and then decreases. If the probe is flatly touching the
     surface, the coupling is zero. The distance of the coupling maximum to
     the surface is independent of the surface reflectivity and largely
     independent of the surface to probe angle. The DASY3 software reads
     the reflection during a software approach and looks for the maximum
     using a 2 nd order fitting. The approach is stopped when reaching the
     maximum.
                                                                                                     Inside view of
                                                                                                  ET3DV6 E-field Probe




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REPORT NO:           02U1267-1                 DATE: April 25, 2002                        FCC ID: N7NAC750



E-Field Probe Calibration Process

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.

Data Evaluation
The DASY3 software 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, ai10, ai11, ai12
                                - Conversion factor                        ConvFi
                                - Diode compression point                  Dcpi
             Device parameters: - Frequency                                f
                                - Crest factor                             cf
             Media parameters: - Conductivity                              σ
                                - Density                                  r
These parameters must be set correctly in the software. They can either be found in the component
documents or be imported into the software from the configuration files issued for the DASY3
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
                                        ⋅
                                            dcpi

             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)




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REPORT NO:           02U1267-1                                 DATE: April 25, 2002                                    FCC ID: N7NAC750



From the compensated input signals the primary field data for each channel can be evaluated:
             E-field probes:                                                       V
                                                                       =
                                                                                                 i
                                                           E   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)
                                        2
                             µV/(V/m) 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
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                 s
                      SAR           =   E          ⋅
                                                       r
                                             tot
                                                           ⋅   1000
             with    SAR            = local specific absorption rate in mW/g
                     Etot           = total field strength in V/m
                     σ              = conductivity in [mho/m] or [siemens/m]
                     r              = 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 ⋅ 37.7
                      P   pwe
                                    3770
                                                                                   pwe           tot




             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




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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750



SAM Phantom

The SAM Phantom V4.0 is constructed of a fiberglass shell
integrated in a wooden table. The shape of the shell is in
compliance with the specification set in IEEE P1528 and
CENELEC EN50361. The phantom 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 the 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 in the robot.

Shell Thickness: 2 ± 0.2 mm
Filling Volume: Approx. 25 liters
Dimensions (H x L x W): 810 x 1000 x 500 mm
                                                                                           SAM Phantom



Device Holder for Transmitters

In combination with the Generic Twin Phantom V3.0, the
Mounting Device enables the rotation of the mounted
transmitter in spherical coordinates whereby the rotation
points is the ear opening. The devices can be easily,
accurately, and repeatedly positioned according to the FCC
and CENELEC specifications. The device holder can be
locked at different phantom locations (left head, right head,
flat phantom).

* Note: A simulating human hand is not used due to the
complex anatomical and geometrical structure of the hand
that may produced infinite number of configurations [10].
To produce the worst-case condition (the hand absorbs antenna
                                                                                                   Device Holder
output power), the hand is omitted during the tests.




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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750



     3.3. EUT ARRANGEMENT
    Two specific EUT setups were used to evaluate the SAR
    1. PC back surface touch the flat phantom as in normal operation condition. The antenna end
       section was bend 90° to parallel the phantom surface and the separation distance to the
       phantom surface is 16 mm.
    2. The antenna is configured in normal operation condition, i.e. antenna seat straight up toward
       the keyboard, and the SAR measurement was taken from the left side of the PC as indicated
       on the setup photo. The antenna separation distance to the phantom surface is 25 mm.


    SETUP PHOTO:
                                                 EUT Set-up configuration 1




                16 mm
                                                                                                                 45 mm




                                                 EUT Set-up configuration 2




                                                                                                                   25 mm




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REPORT NO:            02U1267-1           DATE: April 25, 2002                             FCC ID: N7NAC750



     3.4. MEASUREMENT UNCERTAINTY
The uncertainty budget has been determined for the DASY3 measurement system according to the
NIS81 [13] and the NIST1297 [14] documents and is given in the following Table.
 Uncertainty Description                        Error              Distrib.          Weight          Std. Dev.       Offset
                                                        Probe Uncertainty
 Axial isotropy                                 ± 0.2 dB           U-shape           0.5             ±2.4 %
 Spherical isotropy                             ±0.4 dB            U-shape           0.5             ±4.8 %
 Isotropy from gradient                         ±0.5 dB            U-shape           0
 Spatial resolution                             ±0.5 %             Normal            1               ±0.5 %
 Linearity error                                ±0.2 dB            Rectangle         1               ±2.7 %
 Calibration error                              ±3.3 %             Normal            1               ± 3.3 %
                                                 SAR Evaluation Uncertainty
 Data acquisition error                         ±1%                Rectangle         1               ±0.6 %
 ELF and RF disturbances                        ±0.25 %            Normal            1               ±0.25 %
 Conductivity assessment                        ±10 %              Rectangle         1               ± 5.8 %
                                         Spatial Peak SAR Evaluation Uncertainty
 Extrapol boundary effect                       ±3%                Normal            1               ±3%             ± 5%
 Probe positioning error                        ±0.1 mm            Normal            1               ± 1%
 Integrat. and cube orient                      ±3%                Normal            1               ±3%
 Cube shape inaccuracies                        ±2%                Rectangle         1               ±1.2 %
 Device positioning                             ±6%                Normal            1               ± 6%
 Combined Uncertainties                                                              1               ±11.7 %         ± 5%
 Expanded uncertainty (K = 2)                                                                        ± 23.5 %.


4. EUT TUNE-UP PROCEDURE
     1. EUT preparation
        To stabilize the power drift, the EUT was allowed to warm up for 40 minutes in the laptop. Then
        the output power was increased to the specified maximum limit using AT commands supplied by
        the manufacturer. The output power was monitored and fine-tuned for another 10 minutes to
        ensure EUT power drift was stabilized.

     2. EUT operation conditions
        The AirCard 750 was commanded to transmit continuous pseudo random data on 4 timeslots
        (Multi-slot Class 12 GPRS device) at the maximum power level of PCL=0. This was
        accomplished through an AT command interface (Procomm Plus). The frequency of transmission
        (low, middle and high channel) was varied using AT commands as well. Continuous transmission
        was chosen over a signaling mode since no signaling test equipment is available for multi-slot
        operation.
        Maximum average conducted power was measured by replacing the antenna with an adapter for
        conductive measurements, before and after the SAR measurements was done.




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REPORT NO:           02U1267-1            DATE: April 25, 2002                              FCC ID: N7NAC750




5. EVALUATION PROCEDURE
     Simulated Tissue Liquid Parameter confirmation
     The dielectric parameters were checked prior to assessment using the HP85070A dielectric probe kit.
     The dielectric parameters measured are reported in each correspondent section.
     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)                        εr                  σ   (S/m)                 εr                  σ   (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                      45.3                      5.27                 48.2                     6.00
                           (εr = relative permittivity, σ = conductivity and ρ = 1000 kg/m3)

     5.1. SYSTEM ACCURACY VERIFICATION
     Prior to the assessment, the system validation kit was used to test whether the system was operating
     within its specifications of ±10%. The validation results are tabulated below. And also the
     corresponding SAR plot is attached as well in the SAR plots files.
     IEEE P1528 Recommended Reference Value
        Frequency                                               Local SAR at surface                Local SAR at surface
                           1 g SAR          10 g SAR
          (MHz)                                                  (Above feed point)             (y=2cm offset from feed point)
            900              10.8                 6.9                   16.4                                 5.4
           1800              38.1                 19.8                  69.5                                 6.8


     SYSTEM VALIDATION RESULT
      Ambient conditions - Ambient temperature: 23°C; Relative humidity: 57 %
      System Validation Dipole: D1800V2 SN: 294                                                     Depth of liquid: 15.1 cm
                          Liquid
                                                                                Measured                Deviation          Limit
          Liquid          Temp         Parameters          Target Value
                                                                                 Value                    [%]               [%]
                           [°C]
                                             εr                 40                 40.6                   +1.5              ±5
          Head              21
                                             σ                  1.4                1.44                   +2.9              ±5
        1800 MHz
                            21           1 g SAR                38.1              36.92                    -3.1            ± 10

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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750



     5.2. SAR EVALUATION PROCEDURE
     The evaluation was performed with the following procedure:
     Step 1: Measurement of the SAR value at a fixed location above the ear point or central position
     was used as a reference value for assessing the power drop.
     Step 2: The SAR distribution at the exposed side of the head was measured at a distance of 3.9
     mm from the inner surface of the shell. The area covered the entire dimension of the head or EUT
     and the horizontal grid spacing was 20 mm x 20 mm. Based on these data, the area of the
     maximum absorption was determined by spline interpolation.
     Step 3: Around this point, a volume of 32 mm x 32 mm x 34 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 2.7 mm away
          from the tip of the probe and the distance between the surface and the lowest measuring point
          is 1.2 mm. The extrapolation was based on a least square algorithm [11]. 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) [11], [12]. The volume was
          integrated with the trapezoidal-algorithm. One thousand points (10 x 10 x 10) were
          interpolated to calculate the average.
       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.
     5.3. EXPOSURE LIMIT
     (A) Limits for Occupational/Controlled Exposure (W/kg)
                Whole-Body                           Partial-Body                      Hands, Wrists, Feet and Ankles
                   0.4                                    8.0                                       20.0

     (B) Limits for General Population/Uncontrolled Exposure (W/kg)
                Whole-Body                           Partial-Body                      Hands, Wrists, Feet and Ankles

                     0.08                                  1.6                                         4.0

     NOTE 1: 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 mW/g



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REPORT NO:           02U1267-1                 DATE: April 25, 2002                          FCC ID: N7NAC750



6. MEASUREMENT RESULTS

 LIQUID VERIFY:
 Ambient conditions - Ambient temperature: 23°C; Relative humidity: 57 %

    Liquid          Liquid       Parameters            Target Value       Measured             Deviation [%]          Limit [%]
                  Temp [°C]
                                          εr              53.3               53.3                       0                 ±5
   Muscle
                      21
  1900 MHz
                                          σ               1.52               1.55                   +1.97                 ±5

 SAR MEASUREMENT:
 Model Name: AirCard 750 (Modulation: GPRS 50% duty cycle; Crest factor: 2)
 Phantom Section: Flat (Body)                                                                       Depth of liquid: 15.1 cm
 EUT Set-up configuration 1
             EUT Set-up conditions                      Conducted Power [dBm]       Liquid         SAR (W/kg)
                                                                                    Temp                                   Limit
              Frequency        Antenna          Sep.                                            (1g)           (1g)       (W/kg)
  Channel                                                  Before       After        [°C]
                [MHz]          position         [mm]                                          Measured      Corrected*

    512         1850.2         Vertical          0          25.1        24.9         21         0.257          N/A           1.6

    661         1880.0         Vertical          0          24.8        24.7         21         0.191          N/A           1.6

    810         1909.8         Vertical          0          24.8        24.7         21         0.133          N/A           1.6


 EUT Set-up configuration 2
             EUT Set-up conditions                      Conducted Power [dBm]       Liquid         SAR (W/kg)
                                                                                                                           Limit
                                                                                    Temp                       (1g)       (W/kg)
              Frequency        Antenna          Sep.                                            (1g)
  Channel                                                  Before       After        [°C]
                [MHz]          position         [mm]                                          Measured      Corrected*

    512         1850.2         Vertical          25         25.1        24.9        20.5        0.609          N/A           1.6

    661         1880.0         Vertical          25         24.8        24.7         21         0.393          N/A           1.6

    810         1909.8         Vertical          25         24.8        24.7         21         0.338          N/A           1.6

 Note (s): The data in this table is for GPRS mode only. It does not include GSM mode.




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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750



7. EUT PHOTO




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REPORT NO:           02U1267-1            DATE: April 25, 2002                              FCC ID: N7NAC750



8. EQUIPMENTS LIST & CALIBRATION STATUS
                                                                                                                  Calibration
                Name of Equipment                   Manufacturer        Type/Model      Serial Number
                                                                                                             last cal.   due date
      S-Parameter Network Analyzer               Agilent               8753ES         MY40001647            5/19/01      6/4/02
      Electronic Probe kit                       Hewlett Packard       85070A         N/A                   N/A          N/A
      3.5 mm Calibration Kit                     Agilent         85033D               3423A07200            6/4/01       6/4/02
      Power Meter                                Rohde & Schwarz NRVD                 842093/017            1/21/02      1/21/03
      Power Sensor                               Rohde & Schwarz NRV-Z51              841275/013            1/21/02      1/21/03
      Universal Radio Communication
                                                 Rohde & Schwarz CMU 200              838114/032            11/20/01 11/20/02
      Tester
      Amplifier                                  Mini-Circuit          ZHL-42W        D072701-5             N/A          N/A
      DC Power generator                         Kenwood               PA36-3A        7060074               N/A          N/A
      Data Acquisition Electronics (DAE)         SPEAG                 DAE3 V1        500                   2/26/02      2/26/03
      Dosimetric E-Field Probe                   SPEAG                 ET3DV6         1578                  2/22/01      2/22/03
      900 MHz System Validation Dipole           SPEAG                 D900V2         108                   4/17/01      4/17/03
      1800 MHz System Validation Dipole          SPEAG                 D1800V2        294                   4/19/01      4/19/03
      450 MHz System Validation Dipole           SPEAG                 D450V2         1003                  4/5/02       4/19/04
      Probe Alignment Unit                       SPEAG                 LB (V2)        261                   N/A          N/A
      Dummy Probe                                SPEAG                 DP1            N/A                   N/A          N/A
      Robot                                      Staubli               RX90B L        F00/5H31A1/A/01 N/A                N/A
      Generic Twin Phantom                       SPEAG                 N/A            N/A                   N/A          N/A
      SAM Phantom                                SPEAG                 N/A            N/A                   N/A          N/A
      Devices Holder                             SPEAG                 N/A            N/A                   N/A          N/A
      Head 450 MHz                               CCS                   H450A          N/A                   Daily        N/A
      Muscle 450 MHz                             CCS                   M450A          N/A                   Daily        N/A
      Head 835 MHz                               CCS                   H835A          N/A                   Daily        N/A
      Muscle 835 MHz                             CCS                   M835A          N/A                   Daily        N/A
      Head 900 MHz                               CCS                   H900A          N/A                   Daily        N/A
      Muscle 900 MHz                             CCS                   M900A          N/A                   Daily        N/A
      Head 1800 MHz                              CCS                   H1800A         N/A                   Daily        N/A
      Muscle 1800 MHz                            CCS                   M1800A         N/A                   Daily        N/A
      Head 1900 MHz                              CCS                   H1900A         N/A                   Daily        N/A
      Muscle 1900 MHz                            CCS                   M1900A         N/A                   Daily        N/A
      Head 2450 MHz                              CCS                   H2450A         N/A                   Daily        N/A
      Muscle 2450 MHz                            CCS                   M2450A         N/A                   Daily        N/A




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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750



9. 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




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REPORT NO:           02U1267-1            DATE: April 25, 2002                             FCC ID: N7NAC750



10. ATTACHMENT

      Exhibit                                           Content                                              No. of page (s)
          1        SAR System Validation Plots                                                                        2
          2        SAR Test Plots                                                                                    12
          3        Dosimetric E-Field Probe (ET3DV6, S/N: 1578)                                                      12
          4        System Validation Dipole (D1800V2, S/N: 294)                                                       7




                                                      End of Report




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04/25/02


System Validation - D1800V2 S/N: 294
(Iuput power: 250 mW)

SAM; Flat
Probe: ET3DV6 - SN1578; ConvF(5.50,5.50,5.50); Crest factor: 1.0
Head 1800 MHz: σ = 1.44 mho/m εr = 40.6 ρ = 1.00 g/cm3
Cube 5x5x7: Peak: 16.9 mW/g, SAR (1g): 9.23 mW/g, SAR (10g): 4.87 mW/g, (Worst-case extrapolation)
Penetration depth: 8.5 (8.1, 9.4) [mm]
Powerdrift: -0.12 dB

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21.0




                                                                                                SARTot [mW/g]




                                                                                                       8.77E+0

                                                                                                       6.82E+0

                                                                                                       4.87E+0

                                                                                                       2.92E+0

                                                                                                       9.75E-1




COMPLIANCE CERTIFICATION SERVICES


04/25/02


System Validation - D1800V2 S/N: 294
(Iuput power: 250 mW)

SAM;
Probe: ET3DV6 - SN1578; ConvF(5.50,5.50,5.50); Crest factor: 1.0
Head 1800 MHz: σ = 1.44 mho/m εr = 40.6 ρ = 1.00 g/cm3
: , , ()
Penetration depth: 8.4 (8.0, 9.4) [mm]


Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21.0




                      18

                      16

                      14

                      12
     SAR tot [mW/g]




                      10

                      8

                      6

                      4

                      2

                      0
                           0   10     20             30            40   50   60   70
                                                            [mm]




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04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1850.2 MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Flat Section; Position: (90°,90°)
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:Cube 5x5x7: Peak: 1.02 mW/g, SAR (1g): 0.609 mW/g, SAR (10g): 0.362 mW/g, (Worst-case extrapolation)
Penetration depth: 10.9 (9.6, 12.7) [mm]; Powerdrift: 0.02 dB
Coarse: Dx = 14.0, Dy = 14.0, Dz = 10.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 20.5




                                                                                             SARTot [mW/g]




                                                                                                    5.20E-1

                                                                                                    4.05E-1

                                                                                                    2.89E-1

                                                                                                    1.73E-1

                                                                                                    5.78E-2




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1850.2 MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Section; Position:
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:: , , ()
Penetration depth: 11.0 (9.8, 12.6) [mm];
Z-Axis: Dx = 0.0, Dy = 0.0, Dz = 2.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 20.5




                     1.1

                     1.0

                     0.9

                     0.8
    SAR tot [mW/g]




                     0.7

                     0.6

                     0.5

                     0.4

                     0.3

                     0.2

                     0.1

                     0.0
                           0   10   20       30          40        50   60   70   80
                                                         [mm]




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1880.0 MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Flat Section; Position: (90°,90°)
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:Cube 5x5x7: Peak: 0.661 mW/g, SAR (1g): 0.393 mW/g, SAR (10g): 0.235 mW/g, (Worst-case extrapolation)
Penetration depth: 10.6 (9.4, 12.1) [mm]; Powerdrift: -0.01 dB
Coarse: Dx = 14.0, Dy = 14.0, Dz = 10.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                                                                                             SARTot [mW/g]




                                                                                                     3.65E-1

                                                                                                     2.83E-1

                                                                                                     2.03E-1

                                                                                                     1.22E-1

                                                                                                     4.05E-2




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1880.0 MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Section; Position:
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:: , , ()
Penetration depth: 10.6 (9.5, 12.2) [mm];
Z-Axis: Dx = 0.0, Dy = 0.0, Dz = 2.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                     0.7


                     0.6


                     0.5
    SAR tot [mW/g]




                     0.4


                     0.3


                     0.2


                     0.1


                     0.0
                           0   10   20       30          40        50   60   70   80
                                                         [mm]




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1909.8MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Flat Section; Position: (90°,90°)
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:Cube 5x5x7: Peak: 0.572 mW/g, SAR (1g): 0.338 mW/g, SAR (10g): 0.201 mW/g, (Worst-case extrapolation)
Penetration depth: 10.4 (9.3, 12.0) [mm]; Powerdrift: -0.01 dB
Coarse: Dx = 14.0, Dy = 14.0, Dz = 10.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                                                                                             SARTot [mW/g]




                                                                                                     3.10E-1

                                                                                                     2.41E-1

                                                                                                     1.72E-1

                                                                                                     1.03E-1

                                                                                                     3.44E-2




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1909.8MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Section; Position:
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:: , , ()
Penetration depth: 10.5 (9.3, 12.1) [mm];
Z-Axis: Dx = 0.0, Dy = 0.0, Dz = 2.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                     0.6


                     0.5


                     0.4
    SAR tot [mW/g]




                     0.3


                     0.2


                     0.1


                     0.0
                           0   10   20       30          40        50   60   70   80
                                                         [mm]




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1850.2MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Flat Section; Position: (90°,270°)
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:Cube 5x5x7: Peak: 0.418 mW/g, SAR (1g): 0.257 mW/g, SAR (10g): 0.165 mW/g, (Worst-case extrapolation)
Penetration depth: 12.5 (10.3, 15.7) [mm]; Powerdrift: -0.13 dB
Coarse: Dx = 14.0, Dy = 14.0, Dz = 10.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                                                                                             SARTot [mW/g]




                                                                                                     2.51E-1

                                                                                                     1.95E-1

                                                                                                     1.40E-1

                                                                                                     8.37E-2

                                                                                                     2.79E-2




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1850.2MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Section; Position:
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:: , , ()
Penetration depth: 12.7 (10.4, 16.0) [mm];
Z-Axis: Dx = 0.0, Dy = 0.0, Dz = 2.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                     0.5



                     0.4
    SAR tot [mW/g]




                     0.3



                     0.2



                     0.1



                     0.0
                           0   10   20       30          40        50   60   70   80
                                                         [mm]




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1880.0 MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Flat Section; Position: (90°,270°)
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:Cube 5x5x7: Peak: 0.317 mW/g, SAR (1g): 0.191 mW/g, SAR (10g): 0.116 mW/g, (Worst-case extrapolation)
Penetration depth: 10.4 (9.6, 11.7) [mm]; Powerdrift: 0.10 dB
Coarse: Dx = 14.0, Dy = 14.0, Dz = 10.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                                                                                             SARTot [mW/g]




                                                                                                     1.85E-1

                                                                                                     1.44E-1

                                                                                                     1.03E-1

                                                                                                     6.15E-2

                                                                                                     2.05E-2




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1880.0 MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Section; Position:
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:: , , ()
Penetration depth: 10.5 (9.3, 12.4) [mm];
Z-Axis: Dx = 0.0, Dy = 0.0, Dz = 2.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                     0.4




                     0.3
    SAR tot [mW/g]




                     0.2




                     0.1




                     0.0
                           0   10   20       30          40        50   60   70   80
                                                         [mm]




COMPLIANCE CERTIFICATION SERVICES


04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1909.8MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Flat Section; Position: (90°,270°)
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:Cube 5x5x7: Peak: 0.229 mW/g, SAR (1g): 0.133 mW/g, SAR (10g): 0.0818 mW/g, (Worst-case extrapolation)
Penetration depth: 10.7 (9.0, 13.2) [mm]; Powerdrift: -0.01 dB
Coarse: Dx = 14.0, Dy = 14.0, Dz = 10.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                                                                                              SARTot [mW/g]




                                                                                                     1.25E-1

                                                                                                     9.73E-2

                                                                                                     6.95E-2

                                                                                                     4.17E-2

                                                                                                     1.39E-2




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04/25/02


Sierra_AirCard 750; Flat section; Frequency: 1850.2MHz)
Frequency: 1900 MHz; Crest factor: 2.0
Medium: Muscle 1900 MHz: σ = 1.55 mho/m εr = 53.3 ρ = 1.00 g/cm3
SAM Phantom; Section; Position:
Probe: ET3DV6 - SN1578; ConvF(5.10,5.10,5.10);
SAR:: , , ()
Penetration depth: 12.7 (10.4, 16.0) [mm];
Z-Axis: Dx = 0.0, Dy = 0.0, Dz = 2.0

Ambient Temperature (degree C): 23
Liquid Temperature (degree C): 21




                     0.5



                     0.4
    SAR tot [mW/g]




                     0.3



                     0.2



                     0.1



                     0.0
                           0   10   20       30          40        50   60   70   80
                                                         [mm]




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Document Created: 2002-04-26 18:27:31
Document Modified: 2002-04-26 18:27:31

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