User Guide
A5-Turbo
34
Hearing Aid Compatible for
inductive coupling (telecoil mode) if it has a “T3” or “T4” rating.
The tested M-Rating and T-Rating for this device (FCC ID:
2AE4519NOIT21) are M4 and T3.
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 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 M and T marks are recommended by the Alliance for
Telecommunications Industries Solutions
(ATIS). The U marks is referenced in Section 20.19 of the FCC Rules.
The HAC rating and measurement
procedure are described in the American National Standards Institute
