The phones are connected to the panel
on the rear of the GSI 61 in the position
labeled Insert Left and Insert Right
The use of these insert earphones is
recommended in order to minimize
collapsing of the ear canals while reducing the occlusion effect seen in bone conduction
testing when the ear is covered. Insert phones are ideal for hearing aid evaluations
where they can used to accurately simulate situations for speech testing of hearing
aided patients. Noise exclusion is improved at low frequencies where background
noise may be a problem. These insert phones may be used with tone (125 Hz to
8000 Hz), speech and noise signals.
The second insert phone option is a single phone. This
insert may be used with tone (250 Hz to 6000 Hz), speech
and noise signals.
Note: When the single insert option is used, the insert
phone is connected to the rear of the GSI 61 at the Insert
Left position.
An optional color or black-and-white printer may be attached to the GSI61 to allow
printing of the audiometric test results. This option may be factory installed on the
GSI 61. In addition to a choice of color or black-and-white, a choice of separate
left and right or overlaid left and right audiograms is provided.
The GSI 61 supports most HP (Hewlett Packard) DeskJet Series Printers that use
PCL-3. Contact GSI Service for specific models
.
The Remote/Printer board option includes a set of external DIP switches which
enable the operator to reconfigure the printer color and the audiogram format. The
board is located on the right side, near the rear of the instrument. Refer to the figure
on page 2-4. The switch definitions are as follows:
There are two insert earphones options
available for use with the GSI 1. The
first option is the paired E•A•RTONE
TM
Insert Earphone Set which allows for
the use of these insert phones in
addition to the TDH 50P earphones.
Grason-Stadler GSI
61 CLINICAL AUDIOMETER
Optional Accessories
E•A•RTONE
TM
Insert
Earphone Set
Single Insert
Phone
Printer
2-18
1761-0100 Rev. B
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