Test Report HAC T-Coil Appendix B

FCC ID: IHDT56XQ3

Test Report

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Calibration
      ‘     Laboratory of                                         &l
                                                                   \//7s                                    S      Schweizerischer Kalibrierdienst
Schmid & Partner                                                 iE\E'—%EE_                                 c      Service suisse d‘étalonnage
  Englneering AG                                                 grne                                              Servizio svizzero di taratura
Zeughausstrasse 43, 8004 Zurich, Switzerland                      {r/,,/,7/?\\\\‘\\?                       S       Swiss Calibration Service


Accredited by the Swiss Accreditation Service (SAS)                                                         Accreditation No.: SCS 0108
The Swiss Accreditation Service is one of the signatories to the EA
Multilateral Agreement for the recognition of calibration certificates


Client      Sporton (Auden)                                                                     Certificate No: AM1DV3—3130_Nov17




 Object                                AM1DV3 — SN: 3130


 Calibration procedure(s)              QA CAL—24.v4
                                       Calibration procedure for AM1D magnetic field probes and TMFS in the
                                       audio range

 Calibration date:                     November 21, 2017




 This calibration certificate documents the traceability to national standards, which realize the physicalunits of measurements (S1).
 The measurements and the uncertainties with confidence probability are given on the following pages and are part of the certificate.


 All calibrations have been conducted in the closed laboratory facility: environment temperature (22 + 3)°C and humidity < 70%.


 Calibration Equipment used (M&TE critical for calibration)


 Primary Standards                      ID #                      Cal Date (Certificate No.)                            Scheduled Calibration
 Keithley Multimeter Type 2001          SN: 0810278               31—Aug—17 (No. 21092)                                 Aug—18
 Reference Probe AM1DV2                 SN: 1008                  30—Dec—16 (No. AM1D—1008_Dec16)                       Dec—17
 DAE4                                   SN: 781                   13—Jul—17 (No. DAE4—781_Jul17)                        Jul—18




 Secondary Standards                    ID #                      Check Date (in house)                                 Scheduled Check
 AMCC                                   SN: 1050                  01—Oct—13 (in house check Oct—17)                     Oct—19
 AMMI Audio Measuring Instrument        SN: 1062                  26—Sep—12 (in house check Oct—17)                     Oct—19




                                        Name                                      Function                              Signature
 Calibrated by:                         Leif Klysner                             Laboratory Technician                ;W



 Approved by:                           KatJa Pokovic                            Technical Manager              /Z/g 1




                                                                                                                        Issued: November21, 2017
 This calibration certificate shall not be reproduced except in full without written approval of the laboratory.



Certificate No: AM1DV3—3130_Nov17                                     Page 1 of 3


[References

11       ANSI—C63.19—2007
         American National Standard for Methods of Measurement of Compatibility between Wireless
         Communications Devices and Hearing Aids.
[2]      ANS1—C63.19—2011
         American National Standard, Methods of Measurement of Compatibility between Wireless
         Communications Devices and Hearing Aids.
[31      DASY5 manual, Chapter: Hearing Aid Compatibility (HAC) T—Coil Extension

Description of the AM1D probe

      The AM1D Audio Magnetic Field Probe is a fully shielded magnetic field probe for the frequency
      range from 100 Hz to 20 kHz. The pickup coil is compliant with the dimensional requirements of
      [1+2]. The probe includes a symmetric low noise amplifier for the—signal available at the shielded
      3 pin connector at the side. Poweris supplied via the same connector (phantom power supply)
      and monitored via the LED near the connector. The 7 pin connector at the end of the probe does
      not carry any signals, but determines the angle of the sensor when mounted on the DAE. The
      probe supports mechanical detection of the surface.
      The single sensor in the probe is arranged in a tilt angle allowing measurement of 3 orthogonal
      field components when rotating the probe by 120° around its axis. It is aligned with the
      perpendicular component of the field, if the probe axis is tilted nominally 35.3° above the
      measurement plane, using the connector rotation and sensor—angle stated below.
      The probe is fully RF shielded when operated with the matching signal cable (shielded) and
      allows measurement of audio magnetic fields in the close vicinity of RF emitting wireless devices
      according to [1+2] without additional shielding.

Handling of the item

      The probe is manufactured from stainless steel. In order to maintain the performance and
      calibration of the probe, it must not be opened. The probe is designed for operation in air and
      shall not be exposed to humidity or liquids. For proper operation of the surface detection and
      emergency stop functions in a DASY system, the probe must be operated with the special probe
      cup provided (larger diameter).

Methods Applied and Interpretation of Parameters

      Coordinate System: The AM1D probe is mounted in the DASY system for operation with a HAC
      Test Arch phantom with AMCC Helmholtz calibration coil according to [3], with the tip pointing to
      "southwest" orientation.
      Functional Test: The functional test preceding calibration includes test of
      Noise level
      RF immunity (1kHz AM modulated signal). The shield of the probe cable must be well connected.
      Frequency response verification from 100 Hz to 10 kHz.
      Connector Rotation: The connector at the end of the probe does not carry any signals and is used
      for fixation to the DAE only. The probe is operated in the center of the AMCC Helmholtz coil using a
      1 kHz magnetic field signal. Its angle is determined from the two minima at nominally +120° and —
      120° rotation, so the sensor in the tip of the probe is aligned to the vertical plane in z—direction,
      corresponding to the field maximum in the AMCC Helmholtz calibration coil.
      Sensor Angle: The sensor tilting in the vertical plane from the ideal vertical direction is determined
      from the two minima at nominally +120° and —120°. DASY system uses this angle to align the
      sensor for radial measurements to the x and y axis in the horizontal plane.
Sensitivity: With the probe sensor aligned to the z—field in the AMCC, the output of the probe is
        compared to the magnetic field in the AMCC at 1 kHz. The field in the AMCC Helmholtz coil is
         given by the geometry and the current through the coil, which is monitored on the precision
         shunt resistor of the coil.

Certificate No: AM1DV3—3130_Nov17                   Page 2 of 3


AM1D probe identification and configuration data

    Item                       AM1DV3 Audio Magnetic 1D Field Probe
    Type No                    SP AM1 001 BA
    Serial No                  3130


    Overall length             296 mm
    Tip diameter               6.0 mm (at the tip)
    Sensor offset              3.0 mm (centre of sensor from tip)
    Internal Amplifier         20 dB


    Manufacturer / Origin      Schmid & Partner Engineering AG, Zurich, Switzerland
    Manufacturing date         July 09, 2012
    Last calibration date       November 16, 2016




Calibration data


Connector rotation angle       (in DASY system)       81.2 °              +/— 3.6 ° (k=2)


Sensor angle                   (in DASY system)       1.03 °              +/— 0.5 ° (Kk=2)


Sensitivity at 1 kHz           (in DASY system)       0.00743 V / (A/m)   +/— 2.2 % (k=2)




 The reported uncertainty of measurement is stated as the standard uncertainty of measurement
 mulftiplied by the coverage factor k=2, which for a normal distribution corresponds to a coverage
 probability of approximately 95%.


Certificate No: AM1DV3—3130_Novi7                 Page 3 of 3


Calibration Laboratory of                                                                                          Schweizerischer Kalibrierdienst
Schmid & Partner                                                                                                   Service suisse d‘étalonnage
  Engingering AG                                                                                                   Servizio svizzero di taratura
Zeughausstrasse 43, 8004 Zurich, Switzerland                                                                       Swiss Calibration Service


Accredited by the Swiss Accreditation Service (SAS)                                             Accreditation No.: SCS 0108
The Swiss Accreditation Service is one of the signatories to the EA
Multilateral Agreementfor the recognition of calibration certificates

Client       Auden                                                                              Certificate No: DAE4—910_Jun18

|' CALIBRATION CERTIFICATE                                                                                                                            l
 Object                               DAE4 — SD 000 DO4 BK — SN: 910


 Calibration procedure(s)             QA CAL—06.v29
                                      Calibration procedure for the data acquisition electronics (DAE)



 Calibration date:                    June 21, 2018




 This calibration certificate documents the traceability to national standards, which realize the physicalunits of measurements (S1).
 The measurements and the uncertainties with confidence probability are given on the following pages and are part of the certificate.


 All calibrations have been conducted in the closed laboratory facility: environment temperature (22 + 3)°C and humidity < 70%.


 Calibration Equipment used (M&TE critical for calibration)


 Primary Standards                   LD #                         Cal Date (Certificate No.)                           Scheduled Calibration
 Keithley Multimeter Type 2001         ] SN: 0810278              31—Aug—17 (No:21092)                                 Aug—18


 Secondary Standards                 J ID #                       Check Date (in house)                                Scheduled Check
 Auto DAE Calibration Unit              SE UWS 053 AA 1001        04—Jan—18 (in house check)                            In house check: Jan—19
 Calibrator Box V2.1                    SE UMS 006 AA 1002        04—Jan—18 (in house check)                            In house check: Jan—19




                                        Name                                   Function                                 Signature
 Calibrated by:                         Dominique Steffen                      Laboratory Technician                  %


 Approved by:                           Sven ven Kiuhn
                                                    Kih                        Deputy Manager                             %          p           \(
                                                                                                                              t \/          W

                                                                                                                        Issued: June 21, 2018
 This calibration certificate shall not be reproduced except in full without written approval of the laboratory.




Certificate No: DAE4—910_Jun18                                        Page 1 of 5


Calibration Laboratory of                                                     $   Schweizerischer Kalibrierdienst
Schmid & Partner                                                                  Service suisse d'etalonnage
 Engineering AG                                                               C   Servizio svizzero di taratura
Zeughausstrasse 43, 8004 Zurich, Switzerland                                  s   Swiss Calibration Service


Accredited by the Swiss Accreditation Service (SAS)                           Accreditation No.:   SCS 0108
The Swiss Accreditation Service is one of the signatories to the EA
Multilateral Agreement for the recognition of calibration certificates



Glossary
DAE                          data acquisition electronics
Connector angle              information used in DASY system to align probe sensor X to the robot
                             coordinate system.

Methods Applied and Interpretation of Parameters
  •   DC Voltage Measurement: Calibration Factor assessed for use in DASY system by
     comparison with a calibrated instrument traceable to national standards. The figure given
     corresponds to the full scale range of the voltmeter in the respective range.
    •    Connector angle: The angle of the connector is assessed measuring the angle
         mechanically by a tool inserted. Uncertainty is not required .
    •    The following parameters as documented in the Appendix contain technical information as a
         result from the performance test and require no uncertainty.
         •     DC Voltage Measurement Linearity: Verification of the Linearity at + 10% and -10% of
               the nominal calibration voltage. Influence of offset voltage is included in this
               measurement.
         •     Common mode sensitivity: Influence of a positive or negative common mode voltage on
               the differential measurement.
         •     Channel separation: Influence of a voltage on the neighbor channels not subject to an
               input voltage.
         •     AD Converter Values with inputs shorted: Values on the internal AD converter
               corresponding to zero input voltage
         •     Input Offset Measurement Output voltage and statistical results over a large number of
               zero voltage measurements.
         •     Input Offset Current: Typical value for information; Maximum channel input offset
               current, not considering the input resistance.
         •     Input resistance: Typical value for information: DAE input resistance at the connector,
               during internal auto-zeroing and during measurement.
         •     Low Battery Alarm Voltage: Typical value for information. Below this voltage, a battery
               alarm signal is generated.
         •     Power consumption: Typical value for information. Supply currents in various operating
               modes.




Certificate No: DAE4-91O_Jun 18                                 Page 2 of 5


DC Voltage Measurement
   AID - Converter Resolution nominal
       HighRange:           1LSB=     6.1µV,          fullrange= -100 ... +300mV
       Low Range:           1LSB =     61 nV ,        full range = -1 . .. .... +3mV
   DASY measurement parameters: Auto Zero Time : 3 sec; Measuring time: 3 sec

     Calibration Factors               X                           y                    z
     High Range              403.316 ± 0.02% (k=2)   402.740 ± 0.02% (k=2)    403.223 ± 0.02% (k=2)
     Low Range               3.98189 ± 1.50% (k=2)   3.94034 ± 1.50% (k=2)    3 .94948 ± 1.50% (k=2)



Connector Angle

     Connector Angle to be used in DASY system                                     270.0 ° ± 1 °




Certificate No: DAE4-91O_Jun 18                      Page 3 of 5


Appendix (Additional assessments outside the scope of SCS0108)
1. DC V0 Itage meanty
      High Range                                Reading (µV)          Difference (µV)               Error(%)
      ChannelX         + Input                   200036.85                    -0.57                  -0.00
      ChannelX         + Input                    20007.13                    1.21                   0.01
      ChannelX         - Input                   -20003.15                    2.23                   -0.01
      ChannelY         + Input                   200035.57                    -4.86                  -0.00
      ChannelY         + Input                   20005.66                     -0.36                  -0.00
      ChannelY         - Input                   -20005.78                    -0.47                  0.00
      ChannelZ         + Input                   200031.43                    -6.16                 -0.00
      ChannelZ         + Input                   20004.85                     -0.87                 -0.00
      ChannelZ         - Input                   -20006.04                    -0.58                  0.00

      Low Range                                 Reading (µV)          Difference (µV)               Error(%)
      ChannelX         + Input                    2001.67                     0.16                   0.01
      ChannelX         + Input                    201 .92                     0.42                   0.21
      ChannelX         - Input                    -198.17                     0.31                  -0.16
      ChannelY         + Input                    2001 .38                   -0.14                  -0.0 1
      ChannelY         + Input                    201.49                     -0.03                  -0.01
      ChannelY         - Input                    -198.91                    -0.42                   0.21
      ChannelZ         + Input                    2002.08                     0.66                   0.03
      ChannelZ         + Input                    199.86                     -1.52                  -0.75
      ChannelZ         - Input                    -200.22                    -1 .73                  0.87



2. Common mode sensitivity
                                    t Zero T1me: 3 sec; Measurmg r1me: 3 sec
    DASY measurement paramet ers: Auo
                         Common mode                       High Range                            Low Range
                         Input Voltage (mV)            Average Reading (µV)                 Average Reading (µV)
     Channel X                           200                      -12.45                         -14.44
                                        - 200                     16.44                          14.50
     ChannelY                            200                       6.37                           5.97
                                        - 200                      -7.85                          -7.73
     ChannelZ                            200                      -11.52                         -12.01
                                        - 200                     10.51                          10.13



3. Channel separation
    DASY measuremen t parame ers: At
                                   uo Zero T 1me: 3 sec; M easunng 1me: 3 sec  r
                        Input Voltage (mV)        Channel X (µV)           Channel Y (µV)       ChannelZ(µV)
     ChannelX                     200                        -                  4.62                 -2.89
     ChannelY                     200                   9.63                       -                 4.93
     ChannelZ                     200                  10.63                    7.69                      -

Certificate No: DAE4-91O_Jun 18                              Page 4 of 5


4. AD-Converter Values with inputs shorted
    DASY measurement parameters: Auto Zero T1me: 3 sec; Measunng time: 3 sec

                                                     High Range (LSB)                      Low Range (LSB)

     ChannelX                                                16196                              17184
     ChannelY                                                15388                              15032
     ChannelZ                                                16713                              16294



5. Input Offset Measurement
    DASY measurement parameters: Auto Zero Time: 3 sec; Measuring time: 3 sec
    Input 10MQ

                            Average (µV)                                                         Std. Deviation
                                                min. Offset (µV)        max. Offset (µV)
                                                                                                      (µV)
     ChannelX                    1.84                 0.59                       3.46                  0.62
     ChannelY                    1.42                 0.15                       2.77                  0.52
     ChannelZ                    -0.96                -2.82                      0.61                  0.60


6. Input Offset Current
     Nominal Input circuitry offset current on all channels: <25fA


7. I nput Res1s
             . tance (Typical values for information)
                                                  Zeroing (kOhm)                          Measuring (MOhm)
     ChannelX                                             200                                   200
     ChannelY                                             200                                   200
     ChannelZ                                             200                                   200


8. Low Batterv Al arm VI
                       O taQe            (Typical values for information)
     Typical values                               Alarm Level (VDC)
     Supply(+ Vee)                                                                +7.9
     Supply (- Vee)                                                                -7.6


9. p ower Consumpf 10n           (Typical values for information)
     Typical values                         Switched off (mA)        Stand by (mA)           Transmitting (mA)
     Supply(+ Vee)                                +0.01                    +6                      +14
     Supply (- Vee)                               -0.01                     -8                        -9




Certificate No: DAE4-910_Jun18                            Page 5 of 5



Document Created: 2019-03-26 14:46:39
Document Modified: 2019-03-26 14:46:39

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