1、September 20, 2006 ANSI-PC63.19-2001 Revision Draft 3.17 DRAFT Copyright 2006 IEEE. All rights reserved. This is a draft, subject to change until final approval by ANSI and publication. 1Source: ANSI/IEEE C63.19 Editor This draft has been prepared to present proposed amendments per six points listed
2、 in the PINS for ANSI C63.19. This version is built on revision draft 3.12, with all changes from previous versions accepted. The document is subject to change until it receives ANSI approval and is published. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS unde
3、r license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-September 20, 2006 ANSI-PC63.19-2001 Revision Draft 3.17 DRAFT Copyright 2006 IEEE. All rights reserved. This is a draft, subject to change until final approval by ANSI and publication. 2American Na
4、tional Standard for Methods of Measurement of Compatibility between Wireless Communications Devices and Hearing Aids Accredited Standards Committee on Electromagnetic Compatibility, C63 accredited by the American National Standards Institute Secretariat Institute of Electrical and Electronic Enginee
5、rs, Inc January 10, 2006 Abstract: Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth. Keywords: hearing aid, hearing aid compatibility (HAC), wireless communications device, personal communications service (PCS), American National
6、 Standard, electromagnetic compatibility, operational compatibility, measurement methods Copyright 2006 by the Institute of Electrical and Electronics Engineers, Inc. 345 East 47thStreet New York, NY 10017, USA All Rights Reserved This is an unapproved draft of a proposed IEEE Standard, subject to c
7、hange. Permission is hereby granted for IEEE Standards Committee participants to reproduce this document for purposes of IEEE standardization activities. If this document is to be submitted to ISO or IEC, notification shall be given to the IEEE Copyright Administrator. Permission is also granted for
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9、se of information contained in the unapproved draft is at your own risk. IEEE Standards Department Copyright and Permissions 445 Hoes Lane PO Box 1331 Piscataway, NJ 08855-1331 USACopyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for Res
10、aleNo reproduction or networking permitted without license from IHS-,-,-September 20, 2006 ANSI-PC63.19-2001 Revision Draft 3.17 DRAFT Copyright 2006 IEEE. All rights reserved. This is a draft, subject to change until final approval by ANSI and publication. 3Foreword (This introduction is not a part
11、 of C63.19-2005, American National Standard for Methods of Measurement of Compatibility between Wireless Communications Devices and Hearing Aids.) In the fall of 1995 the Federal Communications Commission (FCC) initiated a Steering Committee to initiate a summit on Hearing Aid Compatibility and Acce
12、ssibility to Digital Wireless Telecommunications. The goal of the summit was to formalize and continue discussions among the three key affected interests in this issue; organizations representing people with hearing loss, hearing aid manufacturers, and the digital wireless telephone industry. The ul
13、timate purpose of the summit was to find a resolution of the interference problem that was acceptable to the industries involved. A summit meeting was held on January 3-4, 1996, in Washington, D.C. At this summit meeting three working groups were formed to pursue issue resolution. Subsequently, the
14、Long-Term Solutions User and Bystander Interference Group reached a consensus that a standards project was needed to document the consensus definition of and method of measurement for Hearing Aid Compatibility and Accessibility to Wireless Telecommunications. Subsequently ANSI C63 was petitioned to
15、undertake the joint standards projects documenting the methods of measurement and defining the limits for Hearing Aid Compatibility and Accessibility to Wireless Telecommunications. At its April 1996 meeting, ANSI C63 established a task group under its subcommittee on medical devices (SC 8). The cha
16、rge to this task group (TC C63.19) was to develop such standards in cooperation with representatives of organizations representing people with hearing loss, hearing aid manufacturers, the digital wireless telephone industry and other interested parties. The 2001 version of this document was the resu
17、lt of that committees efforts. The FCC adopted this standard to provide the technical requirements for its Report and Order establishing mandatory requirements for wireless hearing aid compatibility on July 10, 2003.1Following the adoption by the FCC and for several reasons, including technical chan
18、ges in WDs and hearing aids and new understanding coming from experience gained in working with the 2001 version of this standard, a new revision effort was started. The result of this revision effort culminated in the production of this version of the standard. Membership of Accredited Standards Co
19、mmittee on Electromagnetic Compatibility, C63 At the time that the Accredited Standards Committee on Electromagnetic Compatibility, C63, approved this standard the officers of ANSI ASC C63 were: Ralph M. Showers, Chairman Donald N. Heirman, Vice Chairman Robert Pritchard, Secretary At the time that
20、the ANSI ASC C63, approved this standard the chairs of the working group were: H. Stephen Berger, Chairman Tom Victorian, Vice Chairman The members of ANSI ASC C63 who participated on the balloting group were: Organization Represented Name of Representative Particpants on Balloting Group 1FCC 03-168
21、. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-September 20, 2006 ANSI-PC63.19-2001 Revision Draft 3.17 DRAFT Copyright 2006 IEEE. All rights reserved. T
22、his is a draft, subject to change until final approval by ANSI and publication. 4Contents Section Page 1. OVERVIEW 11 1.1 Scope 11 1.2 Purpose 11 1.3 Organization and use of the document 12 2. REFERENCES 15 3. DEFINITIONS, ACRONYMS AND ABBREVIATIONS 18 3.1 Definitions 18 3.2 Acronyms and abbreviatio
23、ns 20 4. WIRELESS DEVICE, RF EMISSIONS TEST 22 4.1 Measured RF interference level 23 4.2 Test equipment and facilities 24 4.2.1 Test equipment 24 4.2.2 Near-field measurement system 25 4.2.2.1 Probe modulation factor 25 4.3 Test setup and validation 25 4.3.1 Device support and check for reflections
24、25 4.3.2 Setup validation 26 4.3.2.1 Validation procedures using dipoles 26 4.3.2.1.1 Validation procedure 27 4.3.2.1.2 Test cases 27 4.3.2.1.2.1 Measurement of real or emulated signal 28 4.3.2.1.2.2 Measurement of CW and AM modulated signals 28 4.3.2.1.3 Procedure using regular dipoles 28 4.3.2.1.4
25、 Procedure using planar dipoles 28 4.3.3 WD setup and use 28 4.4 Near-field test procedure 29 4.4.1 Detailed near-field test procedure 30 4.4.1.1 Pre-test procedure 30 4.4.1.2 Test procedure 32 4.4.1.2.1 Manual scanning method 32 4.4.1.2.2 Automated scanning method 37 5. HEARING AID RF NEAR-FIELD IM
26、MUNITY TEST 39 5.1 Test facilities and equipment 39 5.1.1 General test conditions 39 5.1.1.1 Ambient conditions 39 5.1.1.2 Power supply voltage 39 5.1.1.3 Test sites 39 5.1.2 Test equipment 39 5.2 Test setup and validation 40 5.2.1 Hearing aid near-field immunity test setup 40 5.2.2 Check for RF int
27、erference to test equipment 40 5.2.3 Characterization of tubing acoustic attenuation and resonances (Informative) 41 5.2.4 Audio input source setup 41 5.2.5 RF field strength validation 41 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENo
28、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-September 20, 2006 ANSI-PC63.19-2001 Revision Draft 3.17 DRAFT Copyright 2006 IEEE. All rights reserved. This is a draft, subject to change until final approval by ANSI and publication. 55.2.6 Pre-tests required for the
29、 hearing aid under test (Informative) 41 5.3 RF immunity test procedure - primary 41 5.4 RF immunity test procedure alternate 48 5.4.1 WB TEM RF immunity test procedures 49 6. WIRELESS DEVICE T-COIL SIGNAL TEST 52 6.1 Test facilities and equipment 52 6.1.1 Test equipment 52 6.1.1.1 Foundational test
30、 equipment 52 6.1.1.2 Additional test equipment 52 6.2 Test configurations and setup 52 6.2.1 Ambient and test system noise 54 6.2.2 Base station simulator method 54 6.2.3 Manufacturers test mode method 54 6.2.4 Calibration of the probe coil 54 6.3 Test procedure for T-Coil signal 54 6.3.1 Test flow
31、 for T-Coil signal test 57 6.3.2 Test signals 58 6.3.2.1 Reference input level 58 6.3.3 Measurement of source magnitude 59 6.3.4 Measurement of source magnitude and direction 59 6.3.4.1 Setup of receiver assembly 59 6.3.4.1.1 Auxiliary induction sources 59 6.3.4.2 Desired plus undesired T-Coil signa
32、l measurement 59 6.3.4.3 Undesired audio band magnetic signal measurement 59 6.3.4.4 Probe coil position and orientation 60 6.3.5 Calculation of signal quality 60 6.3.6 Magnetic field frequency response measurement 60 6.4 Broadband test procedure - alternate 60 6.4.1 Test procedure for broadband tes
33、t 60 6.4.2 Calculation of signal magnitude 61 6.4.3 Calculation of frequency response 61 6.4.4 Calculation of signal quality 61 7. PERFORMANCE 62 7.1 Articulation weighting factor (AWF) 62 7.2 Audio coupling mode 62 7.3 T-Coil coupling mode 66 7.3.1 T-Coil coupling field intensity 66 7.3.2 Frequency
34、 response 66 7.3.3 Relationship of M a sum of 5 would indicate that the WD and hearing aid would provide normal use; and a sum of 6 or greater would indicate that the WD and hearing aid would provide excellent performance. The measurements of WD emissions and hearing aid electromagnetic compatibilit
35、y (EMC) are performed fairly close to the source of these emissions, where small errors in instrumentation, EM field measurements, and hearing aid position can manifest in large uncertainties in measurement results. Section 8 describes the uncertainties involved in these measurements and instrument
36、calibration procedures to control these. This standard also contains several annexes with additional information about the measurements, instrumentation, calibration of instruments, and uncertainty of the measurements. This document is intended to provide a measure of the compatibility between heari
37、ng aid devices and WD products. The device categories are based on testing with hearing aid devices in the laboratory and in actual use. However, there is a wide range of human perceptions of normal communications with WD or even wired communications. Thus, even when compatibility between a particul
38、ar hearing aid and WD is indicated by these tests, it cannot be guaranteed that the vocal output of the WD will be intelligible to all users of the two devices.Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction o
39、r networking permitted without license from IHS-,-,-September 20, 2006 ANSI-PC63.19-2001 Revision Draft 3.17 DRAFT Copyright 2006 IEEE. All rights reserved. This is a draft, subject to change until final approval by ANSI and publication. 14ORGANIZATION AND USE OF THIS STANDARD WIRELESS DEVICE Testin
40、g and Categorization RF Test(s) RF Emissions Section 4 RF Emissions Category Section 7 T-Coil Test(s) T-Coil Mode Section 6 T-Coil Category Section 7 HEARING AID Testing and Categorization RF Test(s) RF Immunity Section 5 RF Immunity Category Section 7 T-Coil Test(s) T-Coil Immunity Section 5 T-Coil
41、 Category Section 7 Category Information Category Information END USER COMBINED PERFORMANCE Section 7 System Performance Classification Table Figure 1-1 Organization of this standard Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for
42、ResaleNo reproduction or networking permitted without license from IHS-,-,-September 20, 2006 ANSI-PC63.19-2001 Revision Draft 3.17 DRAFT Copyright 2006 IEEE. All rights reserved. This is a draft, subject to change until final approval by ANSI and publication. 152. References The following reference
43、s shall form a part of this standard to the extent that they are referenced herein. When any of the references are superseded by a revision, the version specified in this document shall apply. 1. ANSI C63.2-1996, American National Standard for Instrumentation-Electromagnetic Noise and Field Strength
44、, 10 kHz to 40 GHz-Specifications.22. ANSI C63.4-2003, American National Standard for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz. 3. ANSI C63.5-2004, American National Standard for Electromagnetic Compatibility
45、 - Radiated Emission Measurements in Electromagnetic Interference (EMI) Control - Calibration of Antennas (9 kHz to 40 GHz). 4. ANSI C63.14-1998, American National Standard Dictionary for Electromagnetic Compatibility (EMC), Electromagnetic Pulse (EMP), and Electrostatic Discharge (ESD) (Dictionary
46、of EMC/EMP/ESD Terms and Definitions). 5. ANSI C95.1-1999, IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. 6. ANSI C95.3-1991, IEEE Recommended Practice for the Measurement of Potentially Hazardous Electromagnetic Fields RF
47、and Microwave (ANSI). 7. ANSI S1.4-1983 (R 2005), American National Standard Specification for Sound Level Meters. 8. ANSI S3.5-1997, American National Standard, Methods for the Calculation of the Speech Intelligibility Index. 9. ANSI S3.7-1995, American National Standard Method for Coupler Calibrat
48、ion of Earphones. 10. ANSI S3.22-2003, American National Standard, Specification of Hearing Aid Characteristics. 11. ANSI S3.25-1979, American National Standard, Occluded-Ear Simulator. 12. Cellular Telecommunications and Internet Association (CTIA) Performance Evaluation Standard for 800 MHz AMPS a
49、nd Cellular/PCS CDMA Dual Mode Wireless Subscriber Stations, 2003, Revision 3.21. 13. CISPR/TR 16-4-1 (2003-11), Specification for radio disturbance and immunity measuring apparatus and methods - Part 4-1: Uncertainties, statistics and limit modeling - Uncertainties in standardized EMC tests. 14. CISPR 16-4-2 (2003-11), Specification for radio disturbance and
