Does the ACS adjust a GSI-61 by itself?
Yes. Under automatic control the ACS sets each test point on the GSI-61 and adjusts its output to the selected standard. The technician is only prompted to change transducers.
Supported instruments · Grason-Stadler (GSI)
Calibrating GSI audiometers and tympanometers
The ACS has built-in setups for 14 Grason-Stadler (GSI) instruments, and every one of them runs under full automatic control. Select the model, start the calibration, and the ACS sets each test point, measures it and adjusts the instrument to ANSI S3.6 and IEC 60645.
14GSI models with built-in setups
14 of 14Under full automatic serial / USB control
Under 10 minExhaustive calibration on most audiometers
ANSI & IECS3.6, IEC 60645, ISO 389 and S3.39 built in
Supported GSI models
Every GSI model the ACS calibrates
Automatic control means the ACS talks to the instrument through its serial or USB port: it sets frequency, level and channel itself and adjusts the instrument to the standard, and you only step in to change transducers.
| Model | Type | Control | What the ACS checks |
|---|---|---|---|
| Audiostar Pro | Clinical audiometer | Automatic | Air, bone and high frequency output levels, frequency, distortion, linearity, masking noise, tone switching, crosstalk, speech |
| GSI Arrow | Screening audiometer | Automatic | Air conduction output levels, frequency, distortion, linearity, tone switching |
| GSI-16 | Diagnostic audiometer | Automatic | Air, bone and high frequency output levels, frequency, distortion, linearity, masking noise, tone switching, crosstalk, speech |
| GSI-17 | Screening audiometer | Automatic | Air conduction output levels, frequency, distortion, linearity, tone switching |
| GSI-18 | Screening audiometer | Automatic | Air conduction output levels, frequency, distortion, linearity, tone switching |
| GSI-37 | Tympanometer / middle ear analyzer | Automatic | Probe tone level, compliance, probe pressure, reflex output level, distortion, linearity |
| GSI-38 | Tympanometer / middle ear analyzer | Automatic | Probe tone level, compliance, probe pressure, reflex output level, distortion, linearity |
| GSI-39 | Audiometer and tympanometer | Automatic | Audiometer output levels, frequency, distortion and linearity, plus probe tone level, compliance, pressure and reflex |
| GSI-61 | Clinical audiometer | Automatic | Air, bone and high frequency output levels, frequency, distortion, linearity, masking noise, tone switching, crosstalk, speech |
| Novus | ABR / OAE instrument | Automatic | Probe and headset output level, distortion, intermodulation, linearity |
| Pello | Clinical audiometer | Automatic | Air, bone and high frequency output levels, frequency, distortion, linearity, masking noise, tone switching, crosstalk, speech |
| Tympstar Version 1 | Tympanometer / middle ear analyzer | Automatic | Probe tone level, compliance, probe pressure, reflex output level, distortion, linearity |
| Tympstar Version 2 | Tympanometer / middle ear analyzer | Automatic | Probe tone level, compliance, probe pressure, reflex output level, distortion, linearity |
| Tympstar Pro | Tympanometer / middle ear analyzer | Automatic | Probe tone level, compliance, probe pressure, reflex output level, distortion, linearity |
GSI model not listed? It can still be calibrated: set it up as a User Defined instrument with its own test configuration. See GSI on the full instrument list.
How it works
A GSI calibration, start to finish
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Select the GSI model
The ACS loads the right calibration routine and sets the headphone type and impedance for that model.
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Connect and start
Connect the instrument’s outputs to the ACS interface, and on automatic-control models its serial or USB port. The ACS steps through every test point, recording the values it found before any adjustment.
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Print the certificate
Every result, the GSI and transducer serial numbers and the standard used, with your company logo. What a certificate should include.
Questions
GSI calibration questions
Can the ACS calibrate GSI tympanometers too?
Yes. The GSI-37, 38 and 39 AutoTymps and the TympStar V1, V2 and Pro are supported, with probe tone level, compliance, pressure and reflex tests to ANSI S3.39.
How often should a GSI audiometer be calibrated?
Under OSHA hearing conservation rules, an acoustic calibration at least yearly and an exhaustive calibration at least every two years. Calibration schedules.
Other calibration guides: Interacoustics (23 models) · MAICO (20 models) · all 22 manufacturers.
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