Frye FONIX 7000 User Manual

Page 68

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FONIX 7000 Hearing Aid Analyzer

to duplicate that used by the manufacturer to obtain the original data. For ANSI
tests, use #13 thick-walled tubing with a length of 0.4 inches (10 mm). When
cutting tubing to length, leave extra space at each end to go around the nubs of
the ear-level adapter and the hearing aid hook.

Both the HA-1 and the HA-2 couplers have an O-ring located deep within them
that reduces pressure on the inserted microphone, thereby reducing damage to
the microphone. When inserting the microphone into the coupler, you will feel
a point of resistance when the microphone reaches the O-ring. You must contin-
ue to push the microphone into the coupler past that first resistance or incorrect
data will be collected.

3.3.2 In-The-Ear (ITE) and Canal Aids

1. Roll the Fun-Tak, provided with each

instrument, into a rod long enough
to go around the transmitting end
of the aid (approximately 2 inches).
(Modeling clay can also be used, but
it doesn’t work as well.)

2. Bend the Fun-Tak rod around the

canal of the aid, making the result-
ing “donut” flush with the end of the
aid. (Some users choose to seal the
vent opening at this end with a small
amount of Fun-Tak.)

3. Align the sound opening of the aid

to the hole at the conical end of the
coupler. Look through the open end
of the coupler to be sure the sound
opening of the aid is clear of obstruc-
tions and correctly placed.

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