to a comfortable level. If you have two hearing aids
with telecoils, the signal will couple into both hearing
aids.
Direct Audio Input Hearing Aids
If your hearing aid has a direct audio input boot, you
can obtain a cord from your hearing aid manufactur-
er to plug directly into the PFM receiver. The cord’s
plug should be of a 3.5mm diameter in order to match
the receiver jack.
Applications
The Personal FM is designed to provide hearing
assistance for anyone when background noise or dis-
tance from the sound source make listening difficult.
The microphone and transmitter are placed close to
the desired sound source to help minimize back-
ground noise and to effectively eliminate the distance
between the listener and the sound source. Because
hearing ability varies, three categories of amplifica-
tion have been delineated:
1. No Hearing Loss–Low Amplification
Among Low Amplification applications are class-
room and related uses. The PFM System can be used
with headphones or earphones for Central Auditory
Processing Disorders, Learning Disabilities, or
Attention Deficit Disorders. The PFM System is used
primarily to boost speech sounds above other back-
ground noises, making it easier for the listener to
focus on what is being said. The optional Rugged
Headphone (HED 012–children’s size, and HED
014–adult’s size) are recommended for this applica-
tion. The EAR 013 Single Mini Earphone, EAR 008
Surround Earphone, or EAR 014 Dual Mini Earphone
can also be used.
2. Mild–Moderate Hearing Loss
These applications include the classroom, TV listen-
ing, car riding, and one-on-one conversations. The
PFM System can be used with the Single or Dual
Mini Earphone (EAR 013 or EAR 014) for moderate
amplification fittings. The Button Receiver Earphone
(EAR 012 WC) is also available for use with a snap-
on custom earmold. The PFM System is also suitable
for temporary mild hearing loss due to Otitis Media.
The Rugged Headphones (HED 008) or Surround
Earphone (EAR 022 or EAR 008) are recommended
since they do not enter the ear canal.
3. Severe–Profound Hearing Loss
These applications include the classroom, TV listen-
ing, car riding, and one-on-one conversations. For
severe to profound hearing loss, the PERSONAL FM
System should be used in conjunction with a hearing
aid. A Neckloop can be used with hearing aids that
have a telecoil. An adaptor cord can be used with
hearing aids that have direct audio input.
In Case of Difficulty
If your Personal FM System is not working, check the
following:
1. Make sure the batteries are fresh or completely
charged and that the “plus” and “minus” termi-
nals are installed correctly.
2. If the rechargeable batteries will only work for a
short period of time (less than 1 hour) even after
it is fully charged, it must be regenerated. Leave
it in the unit, with the unit turned on, for 5 - 6
hours. Then turn the unit off and charge for 14 -
16 hours. This should restore normal battery life.
The rechargeable battery will gradually lose its
capacity over time and should be replaced every
year.
7
7
Содержание PFM SYS A
Страница 9: ......
