Logic X4.5 Lite User Manual - page 34
LOGIC X4.5 Lite 34
users may detect a buzzing or humming noise. Some hearing devices
are more immune than others to
this interference noise. Wireless devices may also vary in the amount of
interference they generate.
The ratings for compatibility of digital wireless devices with hearing aids
are described in the American
National Standards Institute (ANSI) C63.19 standard:
M-Rating: Phones rated M3 or M4 meet FCC requirements and are
likely to generate less interference
with hearing devices than phone that are not labeled. M4 is the
better/higher of the two ratings.
(X4.5LITE) is rated M3.
T-Rating: Phones rated T3 or T4 meet FCC requirements and are likely
be more usable with hearing
devices’ telecoil than unrated phones. T4 is the better/higher of the two
ratings.
(X4.5LITE) is rated T3.
The more immune the hearing aid device is, the less likely one is to
experience interference noise from
the wireless phone. Hearing aid devices may also be rated. Adding the
rating of the hearing aid and the
phone would determine probable usability:
1. Any combined rating equal to or greater than six offers the best use.
2. Any combined rating equal to five is considered normal use.
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 this
device successfully. Trying out this device with your hearing device is
the best way to evaluate it for