Samsung SGH-A157 User Manual Ver.lc4_f5 (English(north America)) - Page 117

M-Ratings, National Standards Institute ANSI C63.19,

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Trying out the mobile device with your hearing device is the best way to evaluate it for your personal needs. M-Ratings: Wireless mobile devices rated M3 or M4 meet FCC requirements and are likely to generate less interference to hearing devices than mobile devices that are not labeled. M4 is the better/higher of the two ratings. M-ratings refer to enabling acoustic coupling with hearing aids that do not operate in telecoil mode. T-Ratings: Mobile devices rated T3 or T4 meet FCC requirements and are likely to generate less interference to hearing devices than mobile devices that are not labeled. T4 is the better/ higher of the two ratings. T-ratings refer to enabling inductive coupling with hearing aids operating in telecoil mode. Hearing devices may also be rated. Your hearing aid manufacturer or hearing health professional may help you find this rating. Higher ratings mean that the hearing device is relatively immune to interference noise. Under the current industry standard, American National Standards Institute (ANSI) C63.19, the hearing aid and wireless mobile device rating values are added together to indicate how usable they are together. For example, if a hearing aid meets the M2 level rating and the wireless mobile device meets the M3 level rating, the sum of the two values equals M5. Under the standard, this should provide the hearing aid user with normal use while using the hearing aid with the particular wireless mobile device. A sum of 6 or more would indicate excellent performance. However, these are not guarantees that all users will be satisfied. T ratings work similarly. M3 + M2 = 5 T3 + T2 = 5 The HAC rating and measurement procedure are described in the American National Standards Institute (ANSI) C63.19 standard. Health and Safety Information 113

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Health and Safety Information
113
Trying out the mobile device with your hearing
device is the best way to evaluate it for your
personal needs.
M-Ratings
: Wireless mobile devices rated M3 or
M4 meet FCC requirements and are likely to
generate less interference to hearing devices
than mobile devices that are not labeled. M4 is
the better/higher of the two ratings. M-ratings
refer to enabling acoustic coupling with hearing
aids that do not operate in telecoil mode.
T-Ratings
: Mobile devices rated T3 or T4 meet
FCC requirements and are likely to generate less
interference to hearing devices than mobile
devices that are not labeled. T4 is the better/
higher of the two ratings. T-ratings refer to
enabling inductive coupling with hearing aids
operating in telecoil mode.
Hearing devices may also be rated. Your hearing
aid manufacturer or hearing health professional
may help you find this rating. Higher ratings
mean that the hearing device is relatively
immune to interference noise.
Under the current industry standard, American
National Standards Institute (ANSI) C63.19, the
hearing aid and wireless mobile device rating
values are added together to indicate how usable
they are together. For example, if a hearing aid
meets the M2 level rating and the wireless
mobile device meets the M3 level rating, the sum
of the two values equals M5.
Under the standard, this should provide the
hearing aid user with normal use while using the
hearing aid with the particular wireless mobile
device. A sum of 6 or more would indicate
excellent performance.
However, these are not guarantees that all users
will be satisfied. T ratings work similarly.
The HAC rating and measurement procedure are
described in the American National Standards
Institute (ANSI) C63.19 standard.
M3
+
M2
=
5
T3
+
T2
=
5