XT1952-T HAC T-Coil Appendix B Test Report

FCC ID: IHDT56XR4

Test Report

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FCCID_4262044

Calibration Laboratory of                                           wl‘m                                   S      Schweizerischer Kalibrierdienst
Schmid & Partner                                                                                           C      Service suisse d‘étalonnage
  Engineering AG                                                 $ zmng                                           Servizio svizzero di taratura
Zeughausstrasse 43, 8004 Zurich, Switzerland                      4'/,,//r_\\\ y                           S      Swiss Calibration Service
                                                                      mhitabs®

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       Sportgn                                                                            Certificate No: AM1DV3—3130_Nov18

 CALIBRATION CERTIFICATE                                                                                                                            |
 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 20, 2018




 This calibration certificate documents the traceability to nationalstandards, which realize the physical units 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               03—Sep—18 (No. 23488)                                Sep—19
 Reference Probe AM1DV2                 SN: 1008                  03—Jan—18 (No. AM1DV2—1008_Jan18)                    Jan—19
 DAE4                                   SN: 781                   17—Jan—18 (No. DAE4—781_Jan18)                       Jan—19




 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:                          Katia Pokovic                             Technical Manager                  /c ’(%


                                                                                                                       issued: November20, 2018
 This calibration certificate shall not be reproduced exceptin full without written approval of the laboratory.



Certificate No: AM1DV3—3130_Nov18                                    Page 1 of 3


[References

[1]      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.
[3]      DASY5 manual, Chapter: Hearing Aid Compatibility (HAG) T-Coil Extension

Description of the AM1 D probe

      The AM1 D 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. Power is 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 AM1 D probe is mounted in the DASY system for operation with a HAG
      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 (1 kHz 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_Nov18                    Page 2 of 3


AM1 D probe identification and configuration data


   Item                        AM1 DV3 Audio Mannetic 1D Field Probe
   Tvoe No                     SP AM1 001 BA
   Serial No                   3130


   Overall lenath              296mm
   Tio diameter                6.0 mm (at the tinl
   Sensor offset               3.0 mm (centre af sensor from tinl
   Internal Amolifier          20 dB


  I Manufacturer/ Origin      I Schmid & Partner Engineering AG, Zurich, Switzerland



Calibration data


Connector rotation angle       (in DASY system)      80.9°                 +/- 3.6 ° (k=2)


Sensor angle                   (in DASY system)       1.06 °               +/- 0.5 ° (k=2)


Sensitivity at 1 kHz           (in DASY system)       0.00743 V / (Alm)    +/- 2.2 % (k=2)




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




Certificate No: AM1DV3-3130_Nov18                 Page 3 of 3


Calibration Laboratory of                                                                                          Schweizerischer Kalibrierdienst
Schmid & Partner                                                                                                   Service suisse d‘étalonnage
   Engineering 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
Muitilateral Agreement for the recognition of calibration certificates

Client       Sporton                                                                            Certificate No: DAE4—854_Jun18

CALIBRATION CERTIFICATE                                                                                                                              I
 Object                                DAE4 — SD 000 DO4 BM — SN: 854


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



 Calibration date:                     June 14, 2018




 This calibration certificate documents the traceability to national standards, which realize the physical units 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

 Secondary Standards                    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
 Calibrated by:                         Eric Hainfeld                          Laboratory Technician




                                                                                                                          \ N ./&me
 Approved by:                           Sven Kiuhn                             Deputy Manager



                                                                                                                        Issued: June 14, 2018
 This calibration certificate shall not be reproduced except in full without written approval of the laboratory.




Certificate No: DAE4—854_Jun18                                        Page 1 of 5


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


 Accredited by the Swiss Accreditation Se Nice (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 converte r
               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: DAE4-854_Jun18                                  Page 2 of 5


DC Voltage Measurement
    AID - Converter Resolution nominal
        High Range:          1LS8 =     6.1µV,        full range= -100 ... +300 mV
        Low Range:           1LS8 =     61nV,         full range= -L ..... +3mV
    DASY measurement parameters: Auto Zero Time: 3 sec; Measuring time: 3 sec

      Calibration Factors              X                           y                       z
      High Range             404.937 ± 0.02% (k=2)    404. 730± 0.02% (k=2)   405.829 ± 0.02% (k=2)
      Low Range              3.97284 ± 1.50% (k=2)    3.94535 ± 1.50% (k=2)   3.99553 ± 1 .50% (k=2)


Connector Angle

      Connector Angle to be used in DASY system                                    325.0   °±1 °




Certificate No: DAE4-854_Jun18                       Page 3 of 5


Appendix (Additional assessments outside the scope of SCS0108)

1. DC Voltaae Linearitv
      High Range                               Reading (µV)         Difference (µV)               Error(%)
      Channel X       + Input                   200033.40                   -4.54                  -0.00
      ChannelX        + Input                   20004.28                    -1.77                  -0.01
      ChannelX        - Input                   -20002.65                   2.58                  -0.01
      Channel Y       + Input                   200036.32                   -2.03                 -0.00
      Channel Y       + Input                   20002.05                    -3.86                 -0.02
      ChannelY        - Input                   -20005.10                   0.28                  -0.00
      ChannelZ        + Input                   200036.91                  -1.46                  -0.00
      ChannelZ        + Input                   20003.85                   -2.05                  -0.01
      ChannelZ        - Input                   -20005.17                   0.36                  -0.00


      Low Range                                Reading (µV)         Difference (µV)               Error{%)
      ChannelX        + Input                    2002.16                    0.22                   0.01
      ChannelX        + Input                    202.15                     0.38                   0.19
      Channel X       - Input                    -198.29                   -0.31                   0.16
      Channel Y       + Input                    2001.95                    0.27                   0.01
      ChannelY        + Input                    201.01                    -0.63                  -0.31
      Channel Y       - Input                    -198.91                   -0.79                   0.40
      Channel Z       + Input                    2001.73                   -0.08                  -0.00
      Channel Z       + Input                    200.57                    -1.12                  -0.56

      ChannelZ        - Input                    -199.68                   -1.47                   0.74



2. Common mode sensitivity
    DASY measurement parameters: Auto Zero Time: 3 sec; Measunno time: 3 sec

                        Common mode                       High Range                           Low Range
                        Input Voltage (mV)            Average Reading (µV)                Average Reading (µV)

     ChannelX                           200                     -11.94                         -13.63
                                       -200                     15.47                           13.71
     Channel Y                          200                     -8.45                           -8.32
                                       - 200                     7.64                           7.27
     ChannelZ                           200                     16.23                          16.03
                                       - 200                    -18.86                         -19.07



3. Channel separation
    DASY measurement parameters: Auto Zero Time: 3 sec; Measurina time: 3 sec
                       Input Voltage (mV)         Channel X (µV)         Channel Y (µV)       Channel Z (µV)
     Channel X                   200                       -                  1.45                 -3.45
     Channel Y                   200                   7.54                     -                  3.39
    ChannelZ                     200                   9.04                   5.14                      -

Certificate No: DAE4-854_Jun18                             Page 4 of 5


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

                                                     High Range (LSB)                      Low Range (LSB)

     Channel X                                               16138                              16479

     ChannelY                                               16030                               14603

     Channel Z                                              15846                               16180



5. Input Offset Measurement
    DASY measurement parameters: Auto Zero Time: 3 sec; Measuring time: 3 sec
    Input 10MQ
                                                                                                 Std. Deviation
                            Average (µV)        min. Offset (µV)         max. Offset (µ V)
                                                                                                      (µV)
     ChannelX                    0.51                 -0.22                       1.41                 0.30
     Channel Y                   1.02                 -0.44                       1.87                 0.35
     Channel Z                   0.62                 -0.69                       1.46                 0.38



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


7. In out Resistance        (Tvoical values for information)
                                                  Zeroing (kOhm)                          Measuring (MOhm)
     ChannelX                                              200                                  200
     Channel Y                                             200                                  200
     Channel Z                                             200                                  200



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



9. Power Consumot1on             (Typical values for information)
     Typical values                         Switched off (mA)        Stand by (mA)           Transmitting (mA)
     Supply(+ Vee)                                 +0.01                    +6                     +14
     Supply (- Vee)                                -O.Q1                     -8                       -9




Certificate No: DAE4-854_Jun18                             Page 5 of 5



Document Created: 2019-05-15 22:14:46
Document Modified: 2019-05-15 22:14:46

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