HTC HTC Evo View 4G 기본 매뉴얼 - 페이지 36
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36 Basics Guide
hearing devices. Not all phones have been rated. Phones that are rated have the rating on
their box or a label located on the box. The ratings are not guarantees. Results will vary
depending on the user's hearing device and hearing loss. If your hearing device happens
to be vulnerable to interference, you may not be able to use a rated phone successfully.
Trying out the phone with your hearing device is the best way to evaluate it for your
personal needs.
M-Ratings: Phones rated M3 or M4 meet FCC requirements and are likely to generate less
interference to hearing devices than phones that are not rated. M4 is the better/higher of
the two ratings. Your PG86100 is rated M4.
T-Ratings: Phones rated T3 or T4 meet FCC requirements and are likely to be more usable
with a hearing aid's telecoil than phones that are not rated. T4 is the better/higher of the
two ratings. Your PG86100 is rated T3.
Please power off the Bluetooth function while using hearing aid devices with your
PG86100.
Hearing devices may also be rated. Your hearing device
manufacturer or hearing health professional may help you
find this rating. Higher ratings mean that the hearing device is
relatively immune to interference noise.
The hearing aid and wireless phone rating values are then added together. A sum of 5 is
considered acceptable for normal use. A sum of 6 is considered for better use. A sum of 8
is considered for best use. In the above example, if a hearing aid meets the M2 level rating
and the wireless phone meets the M3 level rating, the sum of the two values equal M5. This
should provide the hearing aid user with "normal usage" while using their hearing aid with
the particular wireless phone. "Normal usage" in this context is defined as a signal quality
that is acceptable for normal operation.
This methodology applies equally for T ratings. The M mark is intended to be synonymous
with the U mark. The T mark is intended to be synonymous with the UT mark. The M and
T marks are recommended by the Alliance for Telecommunications Industries Solutions
(ATIS). The U and UT marks are referenced in Section 20.19 of the FCC Rules. The HAC
rating and measurement procedure are described in the American National Standards
Institute (ANSI) C63.19 standard.