Table of Contents
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The MICROPHONE
JACK allows
you to
use
the
optional microphone
in
addition to
the
microphone
located in the
ear
hook.
You may
fi
nd
this
feature
helpful
when there
is a lot
of background noise
or if
you are some distance from the speaker. For
example,
if
you are
in
a
lecture hall
you can
put
the
microphone
near the
speaker.
This
will block out
much of
the
background noise
so you can hear the
speaker more clearly.
BATTERY
The sound processor
is
powered by one 9 volt
transistor battery. Depending upon how
long the
sound processor is
used
each day and the
volume
setting required, the battery will
last
four
to
six days.
Alkaline batteries are higher quality so they
will
last longer.
The volume gradually gets weaker as
the
battery
gets
lower.
For
satisfactory use you should change
the battery when you
notice
the volume
decreasing.
You may find it to your advantage to carry a spare
battery with
you.
Do
not
carry your battery in a
pocket with keys, change or other metal
objects.
This
may
cause
the new
battery
to
lose
its
charge.
There are inexpensive battery testers available at
electronic stores.
Yo
u
may wish
to use
one to deter-
mine
if
a battery is
still
good.
If
the
battery does not
have enough power
for
the INERAID
sound pr.oces-
sor you may be able to use
it
for
someth
ing
else.
Many
radios
and battery operated toys will work with
a battery
that
does not have enough charge to
operate the sound
processor
satisfactorily.
To replace
the
battery, open the compartment
on
the
top panel of
the
sound processor by sliding
the cover
in
the
direction
of
the
arrow.
(See photo
on
previous
page .) Remove
the used
battery (it
is
not
a rechargeable
battery). Insert
the
new
battery
as
shown
in the picture.
You
will
know if
you put the
battery in the wrong way because
the compartment
will not
close unless
you
force it.
If
a dead
battery is
left
in
the
sound processor for
several days
it
may release
corrosive
fluids
which
can
damage
the
sound processor.
Of
course you
will not
have
this
problem
if
you are
using
the
sound
processor on a
daily basis.
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