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GSI AudioStar Pro Instructions for Use
(<) pushbuttons are operated. If distortion is heard in one earphone but not the other, the
chances are high that the earphones are at fault and should be replaced. In any case, the
audiometer should be scheduled for immediate maintenance.
Speech Level Check
To check the speech level with recorded speech, select the Speech test type button. Place
the earphones on a person with normal hearing and present a word list at 40 dB. If
intelligible speech is not heard, with the Channel 1 Hearing Level control set at 40 dB, the
audiometer should be scheduled for technical service.
Internal Controls Check
Should the front panel controls lock into one state, and it is not possible to change any of
the parameters, turn off the power. Wait one minute and then power on.
Bone Vibrator Check
This check must be performed in a quiet environment or in a sound room. With the
frequency set to 2,000 Hz, the Channel 1 level set at 40 dB HL and the bone vibrator
positioned properly, the tone should be clearly audible to a person with normal hearing –
less than 25 dB. When a bone vibrator fails this test, the calibration should be verified.
Masking Level Check
Select the Tone test type. Ensure the stimulus is narrow band noise on Channel 2. Activate
the Channel 2 Interrupt button and listen for a smooth, even hiss.
Talk Forward Check
Speech should be clearly audible (in the earphones) when spoken in a normal tone with the
Talk Forward dB HL control set at 45 dB HL.
C
ALIBRATION
To guarantee that the AudioStar Pro works properly, the instrument should be checked
and calibrated at least once per year. Have an authorized service technician perform
electrical safety checks on the unit to maintain continued compliance to IEC and UL 60601-
1. The use of non-calibrated devices can lead to incorrect test results.
The service and calibration must be performed by an authorized service center. If these
checks are not done, Medical Device Regulation (EU) 2017/745 and other regulations may
be violated, and warranties may be void.
D-0131088 Rev C, 2022-07
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