User's Manual
uses, and can radiate radio frequency
energy and, if Not installed and used in
accordance with the instructions, may
cause harmful Interference to radio
communications. However, there is
no guarantee that interference will
not occur in a particular Installation.
If this equipment does cause harmful
interference to radio or television
reception, which can be determined
by turning the equipment o and
on, the user is encouraged to try to
correct the interference by one or
more of the following measures:
*- Reorient or relocate the receiving
antenna. Increase the separation
between the equipment and
receiver.
*- Connect the equipment into an
outlet of a circuit dierent from that
to which the receiver is connected.
*- Consult the dealer or an
experienced radio/TV technician for
assistance.
Changes or modification not
expressly approved by the party
responsible for Compliance could
void the user’s authority to operate
the equipment. Connecting of
peripherals requires the use of
grounded shielded signal cables.
FCC hearing-aid compatibility
(HAC) regulations for wireless
devices
On July 10, 2003, the U.S. Federal
Communications Commission (FCC)
Report and Order in WT Docket
01-309 modified the exception of
wireless phones under the Hearing
Aid Compatibility Act of 1988 (HAC
Act) to require digital wireless phones
be compatible with hearing-aids. The
intent of the HAC Act is to ensure
reasonable access to
telecommunications services for
persons with hearing disabilities.
While some wireless phones are used
near some hearing devices (hearing
aids and cochlear implants), users may
detect a buzzing, humming, or whining
noise. Some hearing devices are
more immune than others to this
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Additional safety information
interference noise, and phones also
vary in the amount of interference
they generate. The wireless
telephone industry has developed
a rating system for wireless phones,
to assist hearing device users find
phones that may be compatible with
their 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 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 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
Additional safety information
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