HAC T Coil probecertificate

FCC ID: V65C5215

Test Report

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FCCID_1969574

                                                                          Applicant   Kyocera
                                                                           FCC ID::   V65C5215
                                                                          Report #:   CT-C5215_13D-0313-R0

EXHIBIT 13 Appendix D: T-COIL PROBE CALIBRATION CERTIFICATE

Total pages including cover page = 4




© 2013 Comptest Services LLC                          Page 1 of 1                               T-Coil Probe Cert
    This report shall not be reproduced except in full, without the written consent of CompTest Services LLC.


Calibration Laboratory of                                            im
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Schmid & Partner                                                     w




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                                                                                                                   Service suisse d‘étalonnage
  Engineering AG                                                     z——~                                          Servizio svizzero di taratura
Zeughausstrasse 43, 8004 Zurich, Switzerland                        4          x                                   Swiss Calibration Service




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                                                                     Ulrlupile®

Accredited by the Swiss Accreditation Service (SAS)                                              Accreditation No.: SCS 108
The Swiss Accreditation Service is one of the signatories to the EA
Multilateral Agreementfor the recognition of callbration certificates

Client      Kyocera USA                                                                          Certificate No: AM1D—1045_Sep12

|CALIBRATION CERTIFICATE                                                                                                                             |
 Object                               AM1DV2 — SN: 1045


 Calibration procedure(s)             QA CAL—24.v3
                                      Calibration procedure for AM1D magnetic field probes and TMFS in the
                                       audio range

 Calibration date:                     September 20, 2012




 This calibration certificate documents the traceabllity 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 x 3)°C and humnidity < 70%.


 Calibration Equipment used (M&TE critical for calibration)


 Primary Standards                      ID #                      Cal Date (Certificate No.)                            Scheduled Calibration
 Kelthley Multimeter Type 2001          SN: 0810278               28—Sep—11 (No:11450)                                  Sep—12
 Reference Probe AM1DV2                 SN: 1008                  12—Jan—12 (No. AM1D—1008_Jan12)                       Jan—13
 DAE4                                   SN: 781                   29—May—12 (No, DAE4—781_May12)                        May—13



 Secondary Standards                    ID #                      Check Date (in house)                                 Scheduled Check
 AMCC                                   1050                      12—Oct—11 (in house check Oct—11)                     Oct—13




                                                                                                                        Bb
                                        Name                                       Function
 Calibrated by:                         Claudio Leubler                            Laboratory Technician



 Approved by:                           Katia Pokovie                              Technical Manager



                                                                                                                        Issued: September 20, 2012
 This calibration certificate shall not be reproduced except in full without written approval of the laboratory.



Certificate No: AM1D—1045_Sep12                                        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]      DASYS 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]. 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] 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 [2], 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 sensorin 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.
a     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: AM1D—1045_Sep12                      Page 2 of 3


AM1D probe identification and configuration data

   Item                           AM1DV2 Audio Magnetic 1D Field Probe
   Type No                        SP AM1 001 AF
   Serial No                      1045


   Overall length                 296 mm
   Tip diameter                   6.0 mm (at the tip)
   Sensor offset                  3.0 mm (centre of sensor from tip)
    Internal Amplifier            40 dB


   Manufacturer / Origin          Schmid & Partner Engineering AG, Zurich, Switzerland
    Manufacturing date            September 15, 2006
    Last calibration date         September 15, 2011




Calibration data


Connector rotation angle          (in DASY system)      278.4 °              +/— 3.6 ° (k=2)


Sensor angle                      (in DASY system)      ~1.15°               +/— 0.5 ° (k=2)


Sensitivity at 1 kHz              (in DASY system)      0.0657 V / (A/m)     +/—2.2 % (Kk=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: AM1D—1045_Sep12                      Page 3 of 3



Document Created: 2013-04-22 14:06:41
Document Modified: 2013-04-22 14:06:41

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