The GSI 61 is the versatile, two-channel clinical audiometer from the most respected name in the audiologic industry — Grason-Stadler. With its state-of-the -art. GSI 61™. CLINICAL AUDIOMETER. Product. Specifications. General Specifications. • ”(W) x ”(D) x ”(H) (LCD raised). • Height with LCD. GSI 61 ™ CLINICAL TWO-CHANNEL AUDIOMETER Configure Your Own Audiometric System Thanks to all the options available with the GSI 61, you can.
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Grason-Stadler GSI is a world leader in audiometric assessment instrumentation and carries a full line of audiometers, tympanometers, otoacoustic emissions audiomter auditory evoked potential instruments. Instruct the patient to depress the handswitch as soon as a tone is heard, and to release the handswitch only when the tone becomes inaudible.
The dashed grid lines are displayed at the intermediate frequencies of 9 kHz, Seat the patient in a sound field room 6 feet by 6 feet at a distance equal to one meter from the speakers. Present the audiomster tones. Open the catalog to page 3. Using earphones or speakers in a sound field, establish a recorded binaural spondee threshold SRT. If the RTS signal is false at the start of a transmission, or goes seervice during a transmission, the GSI 61 will wait for 6 seconds for the signal to return true.
No part of this publication may be reproduced or transmitted in any form or by any means without sevice prior written permission of Grason-Stadler Inc. At delivery audiomeher GSI 67 and 68 all frequencies are activated but the user might have deactivated some of them. Score each correct response by pressing the Correct button and each wrong response by pressing the Incorrect button to obtain an unaided Speech Reception Threshold SRT.
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.
68 Technical Manual | Frank Humberto Hernández Maita –
The general system state, including signal format, dB step size, special tests, monitor speaker, High Frequency optionalRemote optional with data transfer, and print optional. B Chapter 2 – Installation Interlock This pushbutton locks both tone bars together so that operating one channel will also operate the other, according to the status of the Interrupt buttons. Counseling overlays assist the clinician with counseling patients about hearing loss results.
The GSI 61 is the only audiometer that can keep growing as your needs do. White Noise — This pushbutton selects White Noise. Turn the unit on and observe that the GSI 61 is receiving power.
Grason-Stadler GSI 61 Manual Rev B
Year List 4A 1. Permits the tester to speak through the test microphone into the selected transducer at the intensity level set by the front aduiometer controls.
The GSI 61 has the optional capability of printing the stored audiogram data or of sending the data to a remote computer through an RS or USB interface. The threshold is considered to be the minimum intensity setting at which a response has occurred two out of aidiometer times at a single level. Valid for version 4. Assist the patient with the placement of earphones. Maintain speech signal auviometer Channel 1 at the same level while increasing mamual intensity of the noise Channel 2 in 5 dB steps to a level 20 dB above NIL.
Store for future reference. Familiarize the patient with responding to noticeable increments in intensity by providing practice trials selecting each available dB step 5 dB, 2 dB or 1 dB. The indicator bar for the subject response displays when the handswitch is depressed. The patient is given a clearly typed paragraph to read aloud into the talk back microphone. The principle used, is that if a square-wave is sufficiently low-pass filtered, only the fundamental frequency will remain on the filtered output and all harmonics will be gone.
Modifications to the SISI test 1. The max and higher level can however never be set to a level lower that 10 dB above the audiometfr test level. Refer to the chapter Set-Up Menu in this manual.
It is possible to copy all values for Right earphone to Left earphone.
The case and chassis are connected to the protective earth contact of the appliance inlet. When the Data Erase pushbutton is pressed for at least 0.
The tone may be manually alternated between Channel 1 – Right and Channel 2 – Left by pressing the gxi bar with the Interrupt in the off position for the duration of the time the signals are to be presented.
Grason-Stadler GSI 61 Manual Rev B
Seat the patient comfortably audlometer the test area. The LCD will be turned on to indicate that the power up initialisation is in progress.
The hearing levels listed in this table are guaranteed maximum levels. If no printer is connected make a note for future reference.
Actual data capture and transfer occurs when the Data Transfer button on the front panel is pressed. Continue until the patient has difficulty with the words. The GSI 61 resumes the test status held prior to pressing the Talk Forward pushbutton when the manuql is released.
Masking Level Check Activate the masking noise.