GSI 38 Auto Tymp Audiometer

GSI 38 Auto Tymp Audiometer

The GSI 38 Auto Tymp Audiometer is an automatic acoustic admittance and reflex measurement system with a screening audiometer. It consists of a probe and a desk-to-base interconnected via a cable.

Features:

The model is a combination of GSI 17 and GSI 37, plus acoustic reflex testing capabilities, both ipsilateral and contralateral. The audiometric portion is a single channel pure tone audiometer, with a pair of air-conduction earphones.

In the tympanometric mode, the measurement of acoustic admittance is corrected for the acoustic admittance of the external auditory meatus, and the ear canal volume is displayed. Also, a test cavity assembly is provided.

Designed to Meet International Standards Organization requirements for Electromagnetic Compatibility and Safety.

Specifications:

• Probe Signals
• Frequency: 226 Hz, +/- 3%
• Sound Pressure Level : 85.5 dB SPL, +/- 2.0 dB, Measured in a 2.0 cm3 coupler
• (ANSI Spec 90 dB SPL Max)
• Harmonic Distortion: < 5%
• Acoustic Admittance Range
• 0.0 to 1.5 cm3 or 0.0 to 3.0 cm3 – selected automatically for compensated tympanogram.
• 0.2 to 6.0 cm3 – ECV/cavity limits for initiating pressurization (starting test)
• The 0.2 to 6. 0 cm3 is the sum of the ear canal volume and the middle ear admittance.
• (Full pressure sweep for 6 cc up to 7000 ft. altitude with no leak)
•  +/- 5% or +/- 0.1 cm3 whichever is greater
• Tympanogram Gradient: Pressure interval at 50% of compensated admittance peak.

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