User Manual

55
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