Interacoustics AA222 Instructions For Use Manual page 231

AA222 Instructions for Use – US
Function Key
A
B
C
D
E
F
G
H
Intensity scale I
Frequnecy scale J
Maximum output K
L
Speech banan M
Masking table N
O
P
Q
R
Description
Use the tone switch (35) to present a sound to the client. The stimulus area will
light up when a sound is being presented.
This visualizes the dial setting of the stimulus intensity which can be changed by
rotating the wheel (34).
This visual indicator is shown when the patient presses the patient response.
The measurement type (HL, MCL, UCL or Tinnitus) is shown- as well as the
presentation type, e.g. Tone, Stenger, Weber. The test frequency is also shown.
This visualizes the dial setting of the intensity of channel 2, e.g. masking, which
can be changed by rotating the wheel (38).
The stimulus area will light up when a sound is being presented in channel 2,
e.g. when masking is active (33).
Indication of ear side and stimulus type for channel 1.
CPT (CPT AMA: Council on Physical Therapy American Medical Association) is
a weighed pure tone average for the frequencies 0.5, 1, 2, and 4 kHz according
to their importance for speech understanding.
PTA: Indicate the Pure Tone Average (PTA), set up in Tone settings.
The intensity scale ranging from -10 to 120 dB HL.
The frequency scale ranging from 0,125 kHz to 8 kHz.
The darker area indicates the maximum intensity range for the selected
transducer. The range can be extended by pressing the hardkey Ext. range (32).
The cursor in the audiogram visualizes the currently selected stimulus frequency
and intensity.
The speech banana indicates the area important for speech understanding.
The masking table shows the intensity of the masker for the stored threshold.
Indication of ear side and stimulus type for channel 2.
The cursor in the audiogram visualizes the intensity and frequency of the
currently selected masking level.
Press the "1,2,5 dB" button to toggle the dB step size. The current step size is
indicated on the label of this button.
Hold down the Meas.type button and use the wheel (34/38) to select the
threshold type – HL (hearing level), MCL (most comfortable level), UCL
(uncomfortable level), Tinnitus (tinnitus level).
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