HAC 要求??? (Hearing Aid Compliance)

wistron

請問有人知道HAV這樣測試嗎???

leonshaw

<P>樓上的，請問你是在昆山緯創上班  ？？？</P>

wistron

<P>No ^^, I am taipei.</P><P>somebody knows the HAV test and condition ??</P>

leonshaw

<FONT size=2>Hearing Aid Compatibility (HAC)為助听兼容！具體是怎麼測試的，這個我不是很清楚！你查查有關EMI、EMC等方面的資料，看有沒此種測試方法！</FONT>[br]<p align=right><font color=red>+1 RD币</font></p>

wistron

<P>恩恩 這個我知道他是在EMC的規範內,但是聽說很難過關,所以想知道這有沒有高手</P><P>可以解惑...</P>

asjade

<P>以前预见过一个叫James的老美，从Tyco出来，手里有一个专利，利用双天线近场设计在手机上形成对听障人士助听设备无干扰的特征。美国国会曾通过一个法令，好像对手机HAC有一些方面的规定，因此他的专利似乎在美国就有市场。此人曾想在中国推，但中国连SAR都还没有相关规定，遑论HAC呀。结果当然不了了之了。</P><P>老美之不懂中国市场，可见一斑。</P>[br]<p align=right><font color=red>+3 RD币</font></p>

volcano_viva

<P>ANSI C63.19
Contents
1. Overview............................................................................................................................................. 1
1.1 Scope........................................................................................................................................... 1
1.2 Purpose........................................................................................................................................ 1
1.3 Organization and use of the document......................................................................................... 2
2. References........................................................................................................................................... 5
3. Definitions, acronyms and abbreviations............................................................................................. 8
3.1 Definitions................................................................................................................................... 8
3.2 Acronyms and abbreviations...................................................................................................... 11
4. Wireless device, RF emissions test.................................................................................................... 12
4.1 Test equipment and facilities ..................................................................................................... 12
4.2 Test setup and validation ........................................................................................................... 13
4.3 Near-field test procedure............................................................................................................ 14
5. Hearing aid RF near-field immunity test ........................................................................................... 22
5.1 Test facilities and equipment ..................................................................................................... 23
5.2 Test setup and validation ........................................................................................................... 24
5.3 RF immunity test procedure....................................................................................................... 26
6. Wireless device audio band, magnetic signal test.............................................................................. 31
6.1 Test facilities and equipment ..................................................................................................... 31
6.2 Test configurations and setup .................................................................................................... 32
6.3 Test procedure for audio band magnetic field ........................................................................... 33
7. Performance ...................................................................................................................................... 38
7.1 Articulation weighting factor (AWF) ........................................................................................ 38
7.2 Audio coupling mode................................................................................................................. 38
7.3 Audio band magnetic coupling mode ........................................................................................ 40
7.4 Accessories and options............................................................................................................. 42
8. Calibration and measurement uncertainty ......................................................................................... 43
8.1 General...................................................................................................................................... 43
8.2 Ambient conditions.................................................................................................................... 43
8.3 Specific calibration requirements .............................................................................................. 43
8.4 Measurement uncertainty........................................................................................................... 43
9. Test report ......................................................................................................................................... 44
9.1 Test plan.................................................................................................................................... 44
9.2 Applicable standards.................................................................................................................. 44
9.3 Equipment unit tested ................................................................................................................ 44
9.4 Test configuration ...................................................................................................................... 44
vi
Copyright &copy; 2001 IEEE. All rights reserved.
9.5 List of test equipment................................................................................................................. 45
9.6 Units of measurement ................................................................................................................ 45
9.7 Location of test site.................................................................................................................... 45
9.8 Measurement procedures ........................................................................................................... 45
9.9 Reporting measurement data...................................................................................................... 45
9.10 General and special conditions ................................................................................................. 45
9.11 Summary of results ................................................................................................................... 46
9.12 Required signatures................................................................................................................... 46
9.13 Test report annexes ................................................................................................................... 46
9.14 Test report disposition............................................................................................................... 46
10. Bibliography ..................................................................................................................................... 46
Annex A (normative) Definition of reference axes ....................................................................................... 49
Annex B (normative) Acoustic test frequencies ............................................................................................ 52
Annex C (normative) Equipment and setup calibration ................................................................................ 53
Annex D (normative) Test equipment specifications .................................................................................... 62
Annex E (informative) Sample measurement uncertainty estimates............................................................. 75
Annex F (informative) Use of Helmholtz coils for calibration...................................................................... 79
Annex G (informative) RF envelope comparison for US WD systems......................................................... 88
Annex H (informative) Explanation of rationale used in this standard ......................................................... 91
Annex I (informative) Alternate test method for Rf immunity...................................................................... 92
</P>
<P>对HAC有兴趣的朋友可以参考这个规范</P>
<P>同时也可以上speag.com参考他们的仪器设备。</P>
<P>HAC主要是测earpiece附近的近场分布，具体到手机上差不多是E&lt;84.1(M3),H&lt;0.025</P>
【文件名】:06331@52RD_ANSI C63.19.pdf
【格　式】:pdf
【大　小】:812K
【简　介】:
【目　录】:

[此贴子已经被作者于2006-3-31 10:28:38编辑过]

volcano_viva

<P>好像FCC应该有准入规定：一家公司的手机在美国销售的至少有50%或者6款要符合HAC要求，才能准入。</P><P>不过在运营商那边是可以谈得下来的</P>[br]<p align=right><font color=red>+1 RD币</font></p>

volcano_viva

4.3 Near-field test procedure
The electric field probe, and, separately, the magnetic field probe, are to be used to measure the highest field
strength in the 5 cm by 5 cm scan surface. The average field strength,14 measured over many pulse cycles,
may be measured, with the peak then being calculated from the measured average value and the known duty
cycle of the WD.
The 5 cm by 5 cm area is divided into nine subgrids (see the diagram in Figure A.2). Three contiguous
subgrids on the perimeter may be excluded from the measurement. This allows for RF “hot spots” that can
easily be avoided in actual use.15 The highest reading found in the area defined by the middle subgrid and
the five remaining subgrids determines the category rating. The field probe is carefully moved through the
measurement area and the maximum reading is located. In order to accurately scan the entire 5 cm by 5 cm
area, the center of the probe shall be moved through this area. Accordingly the total area covered by the outside
edge of the probe shall be the 5 cm by 5 cm area, increased by half (1/2) the probe diameter on all sides.
The method of displaying the data is not important as long as good measurement techniques are followed
and the resultant highest field strength is obtained.
The distance from the WD reference plane to the nearest point on the probe element shall be 1.0 cm. The
WD reference plane is a plane parallel with the front “face” of the WD and containing the highest point on
its contour. The probe element is that portion of the probe that is designed to receive and sense the field
being measured. The physical body of the probe housing shall not be used when setting this 1.0 cm distance
as this would place the sensing elements at an indeterminate distance from the reference plane. Although it is
theoretically possible to measure at almost any distance and calculate the equivalent field strengths at 1.0
cm, it is not recommended as these calculations are very difficult and prone to errors.[br]<p align=right><font color=red>+3 RD币</font></p>

zenger

现在知道HAC怎么测了吗？测试过程怎么样的？等级评定是怎么样？pass和fail的标准是什么？

wistron

恩恩 這幾週下來很了解了....只不過真的很難有對策,因為法規跟法規之間互相牴觸,

鱼缸

请问楼上的，HAC对Receiver有什么要求吗？希望大家继续讨论这个话题。
我听说助听器上把mic关掉，只靠耦合来拾取声音，但手机上的音频范围内辐射的噪音多，请问这些噪音是从天线还是从内部电路来得呢？

ttl020520

很好，thank you

jerry1982

仅仅是出口到美国的有这方面的测试，其他的地方都是没有的。
有一些资料，无奈老大不让传出去，惨啦。呵呵。

yahoocc

【文件名】:0783@52RD_amds_hearing_aid_23july2007.pdf
【格　式】:pdf
【大　小】:392K
【简　介】:
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这上面有一些简单HAC的资料，应该还有一些用。
[em01]

vieri00732

HAC,这个鬼东西太不好过了.弄死人耶.
[em03]

willyamyue

【文件名】:07102@52RD_HAC_ANSI C63[1].19.pdf
【格　式】:pdf
【大　小】:812K
【简　介】:
【目　录】:

jobshu

喔 在緯創上班喔 那你可以去找你們做pda 的那個部門 他們有相關資料

52antenna

HAC可以用测SAR的设备测试，但要增加一些新的选件

a910903

HAC弄死人耶