Zte Memo User Manual page 23

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 labeled. M4 is
the better/higher of the two ratings.
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 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
Additional safety information
42
usage" in this context is defined as
a signal quality that is acceptable
for normal operation. 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.
05/11
Note
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