GSI 61 User Manual Rev A

Title:

GSI 61 User Manual

Copyright © 2011 Grason-Stadler Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means without the prior written permission of Grason-Stadler Inc. The information in this publication is proprietary to Grason-Stadler.

Compliance The CE 0344 mark identifies compliance with the Medical Device Directive 93/42/EEC. GrasonStadler is an ISO 13485 certified corporation.

European Authority Representative Grason-Stadler Kongebakken 9 2765 Smørum Denmark

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1761-0100 Rev. B

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Warnings, Cautions and Errors

Warning! Accessory equipment connected to the analog and digital interfaces must be certified to the respective IEC standards (IEC950 for data processing or IEC 60601-1 for medical equipment). Furthermore, all configurations shall comply with the system standard IEC 60601-1-1. Everyone who connects additional equipment to the signal input or signal output port configures a medical system, and is therefore responsible that the system complies with the requirements of the system standard IEC60601-1-1. If in doubt, consult the technical service department or a local representative.

The GSI 61 Clinical Audiometer is designed to be used with a hospital grade outlet. Injury to personnel or damage to equipment can result when a three-prong or two-prong adaptor is connected between the GSI 61 power plug and an AC outlet or extension cord. Audiometers which bear the Underwriters Laboratories, Inc. label should be interconnected with accessories that have the proper electrical compatibility and are listed as meeting the requirements of the UL Medical and Dental Equipment Standard. Connection of accessories not meeting these requirements may result in electrical leakage currents in excess of those allowed by the standard and present a potential electrical shock hazard to the person being tested. This warning icon found on the back of the LCD panel indicates dangerous voltage within the panel. Access to the LCD panel is limited to authorized Grason-Stadler service representatives. When testing with the High Frequency earphones, do not allow the presentation of the signal at the maximum dB HL to exceed 10 minutes. The buildup of increased temperature can cause harm to the earphones.

This caution label refers the user to the accompanying literature and manuals.

Cautions

Cautions

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This icon indicates that the GSI 61 is in compliance with Class 1, Type B requirements of IEC 601-1.

The following is the list of status messages which will occur with operation of the GSI 61 Audiometer. These messages will be displayed in one of the bottom three message areas.

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Grason-Stadler GSI® 61 CLINICAL AUDIOMETER

Status Messages Using Default Data Erasing Data Saving Data No Test Data Stored Check Hi-Freq Cables

Invalid Selection Not Available No Test Data Stored Data Transfer Check Printer

Printing

No Printer Response

Indicates that the selected transducer and stimulus are not calibrated to standard specified (ANSI/ISO) levels. Indicates that the GSI 61 is clearing stored test information. Indicates that the test information is being saved into memory. Indicates that there is no test data available to be erased or printed. Indicates that the High Frequency function is enabled but the cables plugged into the L&R phone jacks are not the GSIspecified type. Indicates that an incorrect selection, such as incompatible transducers, has been made. Indicates an uninstalled option has been selected. Indicates that there is no data available for printing, although the Print Audiogram button has been pressed. Indicates that data has been processed either by the printer or by a remote computer. A check is done to see if the printer is connected and ready to receive data by checking the hardware flow control line. If printer is not ready this message will be flashed. This is an informational message which is displayed while outputting data to the printer. It appears on the lower right section of the LCD. If communications problems occur during the course of printing, this error message will be flashed.

Communications Error Messages The following communication errors may occur during data transmission through the RS 232 communications: Comm error: Comm error:

parity framing

Comm error: Comm error:

overrun multiple

Comm error:

spurious

Comm error:

break

Check GSI 61 and PC parity settings. Check GSI 61 and PC selections for number of stop bits and number of bits per command. See ‘framing’. Check parity, baud rate, number of stop bits and byte size on GSI 61. Soft error. Should not be repeatable; if so, problem could be anywhere in GSI 61 digital circuits or PC’s communication circuits. See ‘spurious’.

If the word “Help” followed by an error code is displayed, note the Help Code number. See the GSI 61 Service Manual (1761-0110) for detailed descriptions of these. Turn off the power to the GSI61 and wait 30 seconds. Restart the instrument. Often the error will be cleared by this action. If the error persists, contact an authorized Grason-Stadler service representative.

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Warranty

We, Grason-Stadler, warrant that this product is free from defects in material and workmanship and, when properly installed and used, will perform in accordance with applicable specifications. If within one year after original shipment, it is found not to meet this standard, it will be repaired, or at our option, replaced at no charge except for transportation costs, when returned to an authorized Grason-Stadler facility. If field service is requested, there will be no charge for labor or material; however, there will be a charge for travel expense at the service center’s current rate. Note: Changes in the product not approved in writing by Grason-Stadler shall void this warranty. Grason-Stadler shall not be responsible for any indirect, special or consequential damages, even if notice has been given in advance of the possibility of such damages. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

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Specifications Standards

The GSI®61 Clinical Audiometer meets or exceeds the following standards: ANSI S3.6-1989; ANSI S3.43-1992; IEC 645-1 (1992); IEC 645-2 (1993); ISO 389; UL 2601-1 Medical Electrical Equipment; IEC 601-1 Medical Electrical Equipment and CSA C22.2, No. 601.1-M90 Electromedical Equipment. The CE mark on this product indicates it conforms with the provisions noted in the 93/42/EEC Medical Devices Directive. CE Mark per Medical Device Directive (93/42/EEC) 0344

Pure Tone - Channel 1 and Channel 2

European Authority Representative Grason-Stadler A/S Kongebakken 9 2765 Smørum Denmark

Frequency Range Air Conduction High Frequency (optional) Bone Conduction Sound Field (optional) Paired Insert (optional) Single Insert (optional) Accuracy Total Harmonic Distortion

125 Hz to 12000 Hz 8 kHz to 20 kHz 250 Hz to 8000 Hz 125 Hz to 12,000 Hz (125 Hz to 16,000 Hz only with High Frequency option, 1761-9630, enabled) 125 Hz to 8000 Hz 250 Hz to 6000 Hz ±1% £ 2% (earphones and paired insert phones*) £ 5% (bone vibrator)

Intensity Range ** Air Conduction: High Frequency:* Bone Conduction: Mastoid Forehead Sound Field:* Paired Inserts:* Single Insert:*

-10 dB HL to 120 dB HL -20 dB HL to 100 dB HL (with Sennheiser HDA 200 Phones) -10 dB HL to 80 dB HL -10 dB HL to 70 dB HL -10 dB HL to 96 dB HL -10 dB HL to 110 dB HL -10 dB HL to 110 dB HL

Masking Intensity Range (Calibrated in effective masking) Narrow Band Noise: Maximum dB HL is 15 dB below tone White Noise: Maximum dB HL is 30 dB below tone * Optional accessories ** The maximum HL values are applicable to the middle frequencies only.

GSI® 61 is a registered trademark of Grason-Stadler. All rights reserved.

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Grason-Stadler GSI® 61 CLINICAL

Speech Channel 1 and Channel 2

Microphone: For live voice testing and communications External A and External B: Accepts recorded speech material from external stereo tape cassette or CD player Intensity Range: Air Conduction: -10 dB HL to 105 dB HL Bone Conduction: Mastoid -10 dB HL to 65 dB HL Forehead -10 dB HL to 55 dB HL Sound Field:*** -10 dB HL to 90 dB HL Paired Inserts:*** -10 dB HL to 95 dB HL Single Insert:*** -10 dB HL to 95 dB HL Masking Intensity Range Speech Noise: Air Conduction (TDH 50P and Insert Phones*) and Bone Conduction Maximum dB HL are the same as the speech type signals. Sound Field: -10 dB HL to 80 dB HL White Noise: Equal to Speech Noise *** Optional Accessories

Steady: Pulsed: FM:

Tone continuously present. Tone pulsed 200 mSec ON, 200 msec OFF. Tone modulated ± 5% of center frequency at a rate of 5 Hz.

Signal Format

ALT:

Tone alternating between Channel 1 and Channel 2: Channel 1 is 400 mSec ON, 400 mSec OFF followed by Channel 2, 400 mSec ON, 400 mSec OFF.

Special Test Capabilities

SISI:

An intensity increment is added to a tone in the selected channel for 200 mSec, every 5 seconds. The HL increments are available in 1, 2 or 5 dB steps.

High Frequency:

Tone testing in the frequency range of 8 kHz to 20 kHz using High Frequency phones or Sound Field. The frequencies available for testing are: 8 kHz, 9 kHz, 10 kHz, 11.2 kHz, 12.5 kHz, 14 kHz, 16 kHz, 18 kHz and 20 kHz (Optional).

Talk Forward:

Permits the tester to speak through the test microphone into the selected transducer at the intensity level set by the front panel controls.

Talk Back:

Allows the tester to listen to comments from the subject in the testing booth.

Monitor:

The monitor headset or monitor speaker can be used by the tester to listen to Channel 1, Channel 2 and/or Talk Back signals.

W x D x H:

20 inches x 15 inches x 12.6 inches (LCD raised) 50 cm x 39 cm x 32 cm Height with LCD lowered - 6 inches (15 cm) 19 pounds 8.7 kg 30 pounds 13.6 kg

Communications and Monitoring

Dimensions and Weight

Weight: Shipping Weight:

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1761-0100 Rev. B

Instrument Specifications

Power Consumption

90 Watts

Accessories Supplied

Test Headset (Matched set TDH-50P) -------------------------------------------------- 8000-0063 Bone Vibrator (B71) ----------------------------------------------------------------------- 8000-0130 Subject Response Handswitch ----------------------------------------------------------- 7874-0156 Test Microphone/Monitor Headset with coiled cord ---------------------------------- 1761-9623 Talk Back Microphone -------------------------------------------------------------------- 8000-0039 Patch Cords, 6 ft. Grey (4/each) ---------------------------------------------------------- 4204-0505 Power Cord --------------------------------------------------------- (Country and voltage specific) Instruction Manual - English ------------------------------------------------------------- 1761-0100 Instruction Manual - Spanish ------------------------------------------------------------- 1761-0104 GSI Suite Audiometic Data Management Software ----------------------------------- 1010-9600

Optional Accessories

CD Player ----------------------------------------------------------------------------------- 1761-9621 Stereo Tape Cassette ---------------------------------------------------------------------- 1761-9622 Speakers, Basic (90 dB) with cables (125 - 16 kHz) ------------------------------------- 1761-9630 Speakers, High Performance (96 dB) with cables (125 - 8 kHz) ----------------------- 1761-9635 Booster Amplifier (220-240V) with cables, for use with the High Performance Speakers only----------------------------------- 1761-9636 Booster Amplifier (100-120V) with cables, for use with the High Performance Speakers only----------------------------------- 1761-9637 Sound Field System, High Performance (102 dB, 220-240V, 125 - 8 kHz) includes High Performance Speakers and Booster Amp ---------------------------- 1761-9638 Sound Field System, High Performance (102 dB, 100-120V, 125 - 8 kHz) includes High Performance Speakers and Booster Amp ---------------------------- 1761-9639 Paired Insert Phones (E•A•RTONETM 3A) ----------------------------------------------- 1700-9606 E•A•RTONETM Replacement Foam Eartips, Std----------------------------------------- 1700-9604 E•A•RTONETM Replacement Foam Eartips, Small -------------------------------------- 1700-9605 Single Insert Phone (470) ----------------------------------------------------------------- 1700-9609 High Frequency Headphones w/booth cables ----------------------------------------- 1761-9602 High Frequency Cables (to sound booth) ---------------------------------------------- 1761-9603 (If using High Freq Headphones, these cables are required to connect to the GSI 61) High Frequency Headphones w/cables to GSI 61 ------------------------------------- 1761-9604 High Frequency Cables (to GSI 61) ------------------------------------------------------ 1761-9605 (If using High Freq Headphones, these cables are required to connect to the GSI 61) Remote RS 232/Printer Interface ---------------------------------------------------------- 1761-9680 Printer, Color (North America only) ------------------------------------------------------ 1761-9610 Service Manual ----------------------------------------------------------------------------- 1761-0110 Audiocups ---------------------------------------------------------------------------------- 8000-0155 OtoAccess (Network Software for GSI Suite) --------------------------------------- 1015-9600

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Grason-Stadler GSI® 61 CLINICAL

Catalog Listings

GSI 61 Clinical Audiometer without Remote English ---------------------------------------------------------------------------------- 1761-9700-XXE French ----------------------------------------------------------------------------------- 1761-9700-XXF German ---------------------------------------------------------------------------------- 1761-9700-XXG Italian -----------------------------------------------------------------------------------1761-9700-XXI Spanish --------------------------------------------------------------------------------- 1761-9700-XXS GSI 61 Clinical Audiometer with USB Remote English -------------------------------------------------------------------------------- 1761-9780-XXE French --------------------------------------------------------------------------------- 1761-9780-XXF German -------------------------------------------------------------------------------- 1761-9780-XXG Italian -----------------------------------------------------------------------------------1761-9780-XXI Spanish--------------------------------------------------------------------------------- 1761-9780-XXS Notes -XX refers to the voltage and plug requirements for the country of operation.

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Table of Contents Preface

Title---------------------------------------------------------------------------------------------------------i Warnings, Cautions and Errors------------------------------------------------------------------------ii Warranty ------------------------------------------------------------------------------------------------iv Specifications -------------------------------------------------------------------------------------------v Standards -------------------------------------------------------------------------------------------v Pure Tone - Channel 1 and Channel 2 ---------------------------------------------------------v Speech Channel 1 and Channel 2 --------------------------------------------------------------vi Signal Format -------------------------------------------------------------------------------------vi Special Test Capabilities ------------------------------------------------------------------------vi Communications and Monitoring --------------------------------------------------------------vi Dimensions and Weight--------------------------------------------------------------------------vi Power Consumption -----------------------------------------------------------------------------vii Accessories Supplied----------------------------------------------------------------------------vii Optional Accessories ----------------------------------------------------------------------------vii Catalog Listings ---------------------------------------------------------------------------------viii Electromagnetic Compatibility (EMC)-------------------------------------------------------------ix

Chapter 1 Introduction

Chapter 2 Installation

1761-0100 Rev. B

Introduction ------------------------------------------------------------------------------------------- 1-1

External Inspection --------------------------------------------------------------------------------- 2-1 Unpacking ------------------------------------------------------------------------------------------- 2-1 Accessories Supplied ------------------------------------------------------------------------------ 2-1 Connectors, Controls and Indicators ------------------------------------------------------------- 2-2 Rear Panel -------------------------------------------------------------------------------------------- 2-2 Left Side Panel--------------------------------------------------------------------------------------- 2-4 Right Side Panel ------------------------------------------------------------------------------------- 2-4 Front Panel Controls -------------------------------------------------------------------------------- 2-5 Valid Stimuli Combinations --------------------------------------------------------------------2-8 Valid Transducer Combinations --------------------------------------------------------------2-8 Displays ----------------------------------------------------------------------------------------2-14 Test Microphone/Monitor Headset -------------------------------------------------------------2-17 Optional Accessories ------------------------------------------------------------------------------2-18 Hearing Level And Frequency Limits------------------------------------------------------------2-24 Initial Installation ----------------------------------------------------------------------------------2-26 Single Room Environment -------------------------------------------------------------------2-27 Two Room Installation ------------------------------------------------------------------------2-27 Loudspeaker Installation ---------------------------------------------------------------------2-29

Contents-1

Grason-Stadler GSI® 61 CLINICAL AUDIOMETER

Chapter 3 Operation

Chapter 4 Special Test Procedures

Chapter 5 Routine Maintenance

Contents-2

Preliminary Checks--------------------------------------------------------------------------------- 3-1 Patient Instructions --------------------------------------------------------------------------------- 3-2 Placement of the Earphones ------------------------------------------------------------------3-2 Placement of the Insert Phone ----------------------------------------------------------------3-2 Placement of the Bone Vibrator ---------------------------------------------------------------3-2 Routine Test Procedures -------------------------------------------------------------------------- 3-3 Threshold Determination (Pure Tone): Modified Hughson-Westlake ------------------3-3 Spondaic Speech Testing, Speech Reception Threshold (SRT) --------------------------3-4 Speech Discrimination (PB Words) -----------------------------------------------------------3-4

Alternate Binaural Loudness Balance (ABLB) or Fowler Test -------------------------------- 4-2 Monaural Loudness Balance (MLB) Test -------------------------------------------------------- 4-3 Short-Increment Sensitivity Index (SISI) --------------------------------------------------------- 4-4 Modifications to the SISI test ---------------------------------------------------------------- 4-4 High Frequency Testing (Optional)--------------------------------------------------------------- 4-5 High Frequency Testing: Setup Diagrams ---------------------------------------------------4-5 Sensorineural Acuity Level (SAL) Test ---------------------------------------------------------- 4-6 Hearing Aid Evaluation ---------------------------------------------------------------------------- 4-6 Tone Decay Test ------------------------------------------------------------------------------------ 4-8 Lombard or Voice-Reflex Test ---------------------------------------------------------------------- 4-8 Delayed Auditory Feedback (DAF)--------------------------------------------------------------- 4-9 Staggered Spondaic Word Test (SSW)----------------------------------------------------------4-10 Doerfler-Stewart Test ------------------------------------------------------------------------------4-11 Modified Doerfler-Stewart Test--------------------------------------------------------------4-11 Pure Tone Stenger Test ---------------------------------------------------------------------------4-12

Biological Calibration Check ----------------------------------------------------------------------- 5-1 Periodic Checks ------------------------------------------------------------------------------------- 5-1 Calibration Reference Levels ---------------------------------------------------------------------- 5-3 Line Voltage Brownout and Interruptions -------------------------------------------------------- 5-6 The Message “CAL” -------------------------------------------------------------------------------- 5-6 The Message “Help” -------------------------------------------------------------------------------- 5-6

1761-0100 Rev. B

Table of Contents

Chapter 6 Remote Options

Appendix

Bibliography

Regulatory

RS 232 Configuration --------------------------------------------------------------------------------6-1 USB Overview ---------------------------------------------------------------------------------------- 6-3 Driver Installation and System Setup --------------------------------------------------------------6-4 GSI Suite -----------------------------------------------------------------------------------------------6-4 Data Flow Control Operation ----------------------------------------------------------------------- 6-5 Hardware Flow Control ------------------------------------------------------------------------ 6-5 Software Flow Control ------------------------------------------------------------------------- 6-5 Cable Connections ----------------------------------------------------------------------------- 6-5 Data Transfer ----------------------------------------------------------------------------------------- 6-6 Record and Field Formatting ------------------------------------------------------------------ 6-6 Checksums -------------------------------------------------------------------------------------- 6-6 Remote Input Operation----------------------------------------------------------------------------- 6-7 Input Record Type ------------------------------------------------------------------------------ 6-7 Input Record Type 1 to 4 ---------------------------------------------------------------------- 6-7 Input Record Type 5 - Pushbutton Code Record ------------------------------------------- 6-7 Type 6- Set Test Frequency Record --------------------------------------------------------- 6-11 Type 7 - Set HL Record ----------------------------------------------------------------------- 6-12 Remote Output Operation---------------------------------------------------------------------------6-13 Type 1- GSI 16 Compatible Short Data Record----------------------------------------------6-13 Type 4 - Error Record --------------------------------------------------------------------------6-16 Type 5 - GSI 61 Short Data Record ----------------------------------------------------------6-16 Type 6 - Test Battery Data Record -----------------------------------------------------------6-18 Record Prefix -----------------------------------------------------------------------------------6-18 Left Ear Test Data - Pure Tone ---------------------------------------------------------------6-18 Speech Test ------------------------------------------------------------------------------------6-20 SISI Test ----------------------------------------------------------------------------------------6-20 Alternate (ABLB) ------------------------------------------------------------------------------6-22 Right Ear Test Data ----------------------------------------------------------------------------6-23 Record Terminator ----------------------------------------------------------------------------6-23 Type 7 - Instrument Type ---------------------------------------------------------------------6-23 Remote Output Operation continued -------------------------------------------------------------6-24 Type 8 - Unit Configuration Record ---------------------------------------------------------6-24

Test Words ---------------------------------------------------------------------------------------- A1-1 Part One -------------------------------------------------------------------------------------------- A1-1 Part Two -------------------------------------------------------------------------------------------- A1-1

Bibliography ------------------------------------------------------------------------------------------B-1 Bibliography for Test Procedures ----------------------------------------------------------------- B-2

Regulatory Symbols------------------------------------------------------------------------------------C-1

Symbols

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Introduction

Chapter 1

Introduction The GSI 61 Clinical Audiometer is a microprocessor controlled, two channel audiometer for use in the clinical/diagnostic environment. It has two separate sets of controls, one for each of the channels. Each channel can be operated independently by its tone bar, or the two channels can be activated simultaneously through use of the interlock button. The GSI 61 permits the output routing of the test signal through earphones (matched TDH-50P), a bone vibrator (B71), optional loudspeakers, optional paired Insert Phones (EAR) or single Insert Phone, and optional High Frequency (Sennheiser HDA 200) Earphones.

The diagnostic tests are easily selected through use of the ergonomically designed front key panel. Flexible routing selections permit the user to select that which is appropriate for the test sequence. The Tracking pushbutton allows the operator to synchronize intensity changes on Channel 2 with those made on Channel 1. All data, including the instrument selected parameters, are displayed on an articulating Liquid Crystal Display (LCD). Pure tone test results are presented in either a “status” or an audiogram format. The status format clearly shows all test conditions and permits the calibration check of input from the microphone or from recorded test materials. The audiogram format for pure tone testing displays the stored threshold values for the patient under test. The display can be tilted to improve the viewing angle for an individual user and to allow easy access to the rear jack panel. The GSI 61 provides testing capabilities for a standard battery of diagnostic audiometric tests including ABLB, SISI, Tone Decay, Stenger, Doerfler-Stewart, Lombard, and Staggered Spondaic Word test (using a three head tape recorder). The High Frequency option extends the frequency range (from 8 kHz to 20 kHz) for ototoxic drug monitoring. 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 232 or USB interface. The RS 232 and USB interface are bidirectional to allow the operator to transmit test results to a computer and to control the audiometer from a remote computer system. The transmittable data record can be configured to be either a single value (threshold and frequency) or battery transfer (all stored parameters for a patient).

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Chapter 2

Installation

Installation

External Inspection Although this GSI 61 Clinical Audiometer was carefully tested, inspected and packed for shipping, it is good practice after receiving the instrument to immediately examine the outside of the container for any signs of damage. Notify the carrier if any damage is observed.

Unpacking Carefully remove the GSI 61 from its shipping container. If the instrument appears to have suffered mechanical damage, notify the carrier immediately so that a proper claim can be made. Be certain to save all packing material so that the claim adjuster can inspect it as well. As soon as the carrier has completed the inspection, notify a Grason-Stadler representative. If the instrument must be returned to the factory, repack it carefully (in the original container, if possible) and return it prepaid to the factory for the necessary adjustments. Check that all accessories itemized below are received in good condition. If any accessories are missing, a Grason-Stadler representative should be notified immediately. See the Specifications Section of this manual for the catalog numbers of accessories and also for a listing of the optional accessories.

Accessories Supplied Test Microphone / Monitor Headset

Patient Talkback Microphone

Test Headset Assembly

Patient Response Handswitch

Not Shown: For Sound Booth use:

Other: 1761-0100 Rev. B

Bone Vibrator Assembly

Handswitch Patch Cord (1) Bone Vibrator Patch Cord (1) Earphone Patch Cord (2) Instruction Manual...Power Cord and GSI Suite CD 2-1

Grason-Stadler GSI® 61 CLINICAL AUDIOMETER

Connectors, Controls and Indicators Rear Panel

The connectors on the rear panel of the GSI 61 are shown in the following diagram. The label and jacks are visible looking down onto the instrument, behind the LCD.

R9

R1 - Monitor Headset

R6

R5

R4

R3

R2

R1

(Modular Phone Jack) Pin 1 2 3 4

R2 - Ext A and Ext B

R8 R7

Function Mic High and +6 VDC Phone Low Phone High Mic Shield

Output Voltage 0.2 to 6.0 mV RMS GND 3.0 mV to 1.0 V GND

Impedance 1.8 K ohm (output) 0 ohm 300 ohm 0 ohm

(RCA plug) Input jacks for optional stereo tape cassette or CD player. Voltage range required: 0.2 to 1.0 V to obtain 0 VU Input Impedance: 15 K ohm

R3 - Talkback Microphone

(3.5 mm stereo jack) Position 1 Tip 2 Ring 3 Shield

Function Mic High Mic Low Chassis Ground

R4 - Left and Right Ear Phone Outputs

(1/4 inch stereo jack)

R5 - Left and Right

(1/4 inch monaural jack)

2-2

Output Voltage 0.2 to 2.0 mV RMS and +6V AC ---------

Impedance 10 K ohm ---------

Stereo phone jacks for left (blue) and right (red) earphones, patch cords, or High Frequency earphone connector cords. Voltage: 1µV to 7.0 V RMS (4.45 V RMS for High Frequency) Output impedance: 5 ohms or less

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Chapter 2 - Installation

Insert Phone Outputs Monaural phone jacks for left and right insert phones or patch cords. Voltage: 1µV to 4.0 V Output impedance: 5 ohms or less Note: When the Single Insert Phone option is used, it must be plugged into the left insert phone output. R6 - Bone Vibrator

(1/4 inch phone jack) Jack for bone vibrator or gray patch cord. Voltage: 200 µV to 5.00 V RMS Output impedance: 5 ohms or less

R7 - Subject Response Handswitch

(1/4 inch phone jack) Accepts plug from the cable attached to the patient’s response handswitch or handswitch patch cord. Pin 1 2 3

R8 - CD Player Power Jack

Function Shield Digital

Voltage GND GND GND

Impedance 0 ohm 0 ohm

Response input

+5V/GND

1K ohm/0 ohm

(2 pin power jack) Provides 5 V DC for CD Player.

R9 - Dip Switch/Cal Switch

An eighth position bank of switches accessible by an authorized service representative.

R10 – Speakers

(5 pin Din connector) Located on rear of instrument. Connects to left and right loudspeakers.

Pin 1 2 3 4 5 SHLD

1761-0100 Rev. B

Function Left speaker (high) Left GND Right speaker (high) Left speaker (low) Right speaker (low) Right GND

Impedance 1.0 ohm 0 ohm 1.0 ohm 1.0 ohm 1.0 ohm 0 ohm

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Grason-Stadler GSI® 61 CLINICAL AUDIOMETER

Left Side Panel

The connectors on the left side panel are shown below. The power entry module is composed of the power switch, fuse drawer and voltage selection switch, and power cord with hospital grade plug appropriate for the country of destination. When turned ON, the GSI 61 automatically initializes and displays a screen which states the type of audiometer (IEC and ANSI specified for speech audiometry) followed by a status screen. With the status display, the GSI 61 is brought to the initialization state. The frequency is set at 1000 Hz and: Channel 1 Steady tone Phone-Right 0 dB HL

Right Side Panel

Channel 2 NB Noise Phone-Left -10 dB HL

Serial Port This instrument has Remote and Printing capability, or the following connectors will be visible on the right side panel of the GSI61:

Please Note: Depending on the date product configuration purchased, the GSI 61 is either equipped with a Serial Port, a USB Port, or no Remote port at all.

!

RS232

Printer Port

Dip Switches

Remote Port

Remote/Printer Option RS 232 Remote Port USB Remote Port

A mini-DIN connector uses a standard Apple “Hayes Modem” cable (supplied) to provide serial connection to the equipment. A Standard A/B USB cable provides connection to a PC.

Printer Port

A 25-pin PC-Printer Interface Connector. Connects to the printer via a standard PCparallel printer cable.

USB Printer Port

A Standard USB cable provides connection to a printer. See Chapter 6 for more

DIP Switches

For more detail on these DIP switch settings, and attaching and using a printer, refer to the Optional Accessories section beginning on page 2-18.

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Chapter 2 - Installation

Front Panel Controls The controls on the front panel of the GSI 61 are shown below.

Attenuators (HL Controls) Channel 1 and Channel 2

The GSI 61 contains two independent HL rotary controls for test signal and masking intensity level control with a range of -10 dB HL to 120 dB HL (If the High Frequency option using Sennheiser earphones is installed and active, the High Frequency intensity level control ranges from -20 dB HL to 110 dB HL). Maximum dB HL values apply to the mid-frequencies with earphones only. Refer to the specific transducer for dB HL limits in the Table on page 2-24.

dB Step Size

These pushbuttons allow the operator to change the intensity step size to 1.0, 2.0 or 5.0 dB. When the GSI 61 is powered up, the dB step size is automatically set to the default of 5 dB increments. These pushbuttons are also used to select the intensity increase when testing in the SISI mode.

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