HAC T-Coil Appendix B Test Report

FCC ID: 2ABZ2-EE133

Test Report

Download: PDF
FCCID_4476256

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 Schmid & Partner s C Schweizerischer Kalibrierdienst Service suisse d'etalonnage Engineering AG 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 Client Sporton Certificate No: DAE4-854_May19 !CALIBRATION CERTIFICATE Object DAE4 - SD 000 D04 BM - SN: 854 Calibration procedure(s) QA CAL-06.v29 Calibration procedure for the data acquisition electronics (DAE) Calibration date: May 2 1, 2019 This calibration certificate documents the traceability to national standards, which realize the physical units of measurements (SI). 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 Cal Date (Certificate No.) Scheduled Calibration Keithley Multimeter Type 2001 I SN: 0810278 03-Sep-18 (No:23488) Sep-19 Secondary Standards ID# Check Date (in house) Scheduled Check Auto DAE Calibration Unit SE UWS 053 AA 1001 07-Jan-19 (in house check) In house check: Jan-20 Calibrator Box V2. 1 SE UMS 006 AA 1002 07-Jan-19 (in house check) In house check: Jan-20 Name Function Signature Calibrated by: Adrian Gehring Laboratory Technician Approved by: Sven Kuhn Deputy Manager Issued: May 21, 2019 This calibration certificate shall not be reproduced except in full without written approval of the laboratory. Certificate No: DAE4-854_May19 Page 1 of 5

Calibration Laboratory of S 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: DAE4-854_May19 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 404.909 ± 0.02% (k=2) 404.692 ± 0.02% (k=2) 405.783 ± 0.02% (k=2) Low Range 3.97164 ± 1.50% (k=2) 3.94913 ± 1.50% (k=2) 3.99482 ± 1.50% (k=2) Connector Angle Connector Angle to be used in DASY system 325.0 ° ± 1 ° Certificate No: DAE4-854_May19 Page 3 of 5

Appendix (Additional assessments outside the scope of SCS0108) 1. DC V 0 Itage L"meanty High Range Reading (µV) Difference (µV) Error(%) ChannelX + Input 199994.47 0.40 0.00 Channel X + Input 20000.57 -0.74 -0.00 Channel X - Input -19999.89 1.86 -0.01 ChannelV + Input 199996.63 2.65 0.00 ChannelV + Input 19998.60 -2.61 -0.01 ChannelV - Input -20002.11 -0.26 0.00 Channel Z + Input 199993.70 -0.37 -0.00 Channel Z + Input 19998.50 -2.78 -0.01 ChannelZ - Input -20002.17 -0.31 0.00 Low Range Reading (µV) Difference (µV) Error(%) ChannelX + Input 2000.92 0.14 0.01 ChannelX + Input 201.80 0.54 0.27 ChannelX - Input -198.07 0.52 -0.26 ChannelV + Input 2000.75 -0.14 -0.01 ChannelV + Input 200.51 -0.64 -0.32 ChannelV - Input -199.85 -1.04 0.52 Channel Z + Input 2000.81 0.06 0.00 Channel Z + Input 200.50 -0.57 -0.28 Channel Z - Input -199.70 -0.76 0.38 2. Common mode sensitivity DASY measurement parameters: Auto Zero Time: 3 sec; Measuring time: 3 sec Common mode High Range Low Range Input Voltage (mV) Average Reading (µV) Average Reading (µV) ChannelX 200 -11.53 -13.11 - 200 15.52 13.66 ChannelV 200 -8.40 -8.84 - 200 7.27 6.80 Channel Z 200 16.75 16.91 - 200 -18.58 -18.86 3. Channel separation DASY measurement parameters: Auto Zero Time: 3 sec; Measuring time: 3 sec Input Voltage (mV) Channel X (µV) Channel V (µV) Channel Z (µV) ChannelX 200 - 1.02 -3.37 ChannelV 200 7.97 - 3.67 Channel Z 200 9.63 4.81 - Certificate No: DAE4-854_May19 Page 4 of 5

4. AD-Converter Values with inputs shorted DASY measurement parameters: Auto Zero Time: 3 sec; Measuring time: 3 sec High Range (LSB) Low Range (LSB) ChannelX 16127 15569 ChannelY 15969 16516 ChannelZ 15864 16505 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 (µV) (uV) ChannelX 0.80 0.09 2.25 0.35 Channel V -0.13 -1.04 0.67 0.35 ChannelZ -0.21 -1.03 0.51 0.33 6. Input Offset Current Nominal Input circuitry offset current on all channels: <25fA 7. Input Res1stance (Typical values for information) Zeroing (kOhm) Measuring (MOhm) ChannelX 200 200 Channel V 200 200 Channel Z 200 200 8. Low Bat terv Al arm V0 Itaae (Typical values for information) Typical values Alarm Level (VDC) Supply(+ Vee) +7.9 Supply (- Vee) -7.6 9. Power C onsumpt1on (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: DAE4-854_May19 Page 5 of 5


Document Created: 2019-10-24 21:54:03
Document Modified: 2019-10-24 21:54:03
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC