GSi 61 User manual

Setting The Clinical Standard www.grason-stadler.com
Grason-Stadler, 7625 Golden Triangle Drive, Suite F, Eden Prairie MN 55344
800-700-2282 • 952-278-4402 • fax [phone] • e-mail [email protected]
GSI 61
™
USER MANUAL
Part Number 1761-0100 Rev B

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. Grason-
Stadler is an ISO 13485 certified corporation.
European Authority Representative
Grason-Stadler
Kongebakken 9
2765 Smørum
Denmark
0344
1761-0100Rev.B i

The GSI 61 ClinicalAudiometer 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 anAC 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
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
withoperationoftheGSI 61Audiometer. Thesemessageswill
be displayed in one of the bottom three message areas.
Warnings, Cautions and Errors
Warnin
g
!
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.
Cautions
ii 1761-0100 Rev. B

Grason-Stadler GSI
®
61 CLINICAL AUDIOMETER
Status Messages
UsingDefaultData Indicates that the selected transducer and stimulus are not
calibrated to standard specified (ANSI/ISO) levels.
ErasingData Indicates that the GSI 61 is clearing stored test information.
SavingData Indicates that the test information is being saved into memory.
NoTestDataStored Indicates that there is no test data available to be erased or
printed.
CheckHi-FreqCables Indicates that the High Frequency function is enabled but the
cables plugged into the L&R phone jacks are not the GSI-
specified type.
InvalidSelection Indicates that an incorrect selection, such as incompatible
transducers, has been made.
NotAvailable Indicates an uninstalled option has been selected.
NoTestDataStored Indicates that there is no data available for printing, although
the Print Audiogram button has been pressed.
DataTransfer Indicates that data has been processed either by the printer or
by a remote computer.
CheckPrinter 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.
Printing This is an informational message which is displayed while
outputting data to the printer. It appears on the lower right
section of the LCD.
NoPrinterResponse Ifcommunicationsproblemsoccur duringthe courseofprinting,
this error message will be flashed.
Communications Error Messages
The following communication errors may occur during data transmission through the RS 232
communications:
Commerror: parity Check GSI61 and PCparitysettings.
Commerror: framing Check GSI 61 and PC selections for number of stop
bits and number of bits per command.
Commerror: overrun See‘framing’.
Commerror: multiple Check parity, baud rate, number of stop bits and
bytesizeonGSI61.
Commerror: spurious Soft error. Should not be repeatable; if so, problem
couldbe anywherein GSI61 digitalcircuitsor PC’s
communicationcircuits.
Commerror: break See ‘spurious’.
Ifthe word “Help” followedbyan errorcodeisdisplayed,notethe Help Codenumber. Seethe
GSI 61 Service Manual (1761-0110) for detailed descriptions of these. Turn off the power to
the GSI61 and wait 30 seconds. Restarttheinstrument. Often theerrorwill becleared bythis
action. If the error persists, contact an authorized Grason-Stadler service representative.
iii
1761-0100 Rev. B

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.
iv
1761-0100 Rev. B

TheGSI®61ClinicalAudiometermeets or exceedsthefollowingstandards:ANSI S3.6-1989;
ANSIS3.43-1992;IEC645-1(1992);IEC645-2(1993);ISO389; UL2601-1MedicalElectrical
Equipment; IEC 601-1 Medical Electrical Equipment and CSA C22.2, No. 601.1-M90
Electromedical Equipment.
TheCEmarkon thisproduct indicatesitconformswith theprovisionsnotedin the93/42/EEC
MedicalDevicesDirective.
CE Mark per Medical Device Directive (93/42/EEC)
Frequency Range
Air Conduction 125Hzto12000Hz
High Frequency (optional) 8kHzto20kHz
Bone Conduction 250Hzto8000Hz
Sound Field (optional) 125Hzto12,000Hz(125Hzto16,000Hz
only withHigh Frequencyoption,1761-9630, enabled)
Paired Insert (optional) 125 Hzto8000Hz
SingleInsert(optional) 250Hzto6000Hz
Accuracy ± 1%
Total HarmonicDistortion £2% (earphones and paired insert phones*)
£5% (bone vibrator)
Intensity Range **
AirConduction: -10dBHLto120dB HL
High Frequency:* -20dBHLto100dB HL(withSennheiserHDA200
Phones)
Bone Conduction:
Mastoid -10 dB HL to 80 dB HL
Forehead -10 dB HL to 70 dB HL
SoundField:* -10dBHLto96dBHL
Paired Inserts:* -10dBHLto110dBHL
SingleInsert:* -10 dBHLto 110dBHL
Masking Intensity Range (Calibrated in effective masking)
NarrowBandNoise: MaximumdBHLis15dBbelowtone
White Noise: MaximumdB HL is30 dBbelow 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.
v
Specifications
Standards
Pure Tone - Channel
1 and Channel 2
European Authority Representative
Grason-Stadler A/S
Kongebakken 9
2765 Smørum
Denmark
0344
1761-0100 Rev. B

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:
AirConduction: -10dBHLto105dBHL
Bone Conduction:
Mastoid -10 dB HLto 65dBHL
Forehead -10 dBHL to55 dBHL
Sound Field:*** -10dBHLto90dBHL
Paired Inserts:*** -10dBHLto95dBHL
Single Insert:*** -10dBHLto95dBHL
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.
SoundField: -10dBHL to80dBHL
White Noise: Equal to Speech Noise
*** Optional Accessories
Steady: Tone continuously present.
Pulsed: Tonepulsed200mSecON,200msecOFF.
FM: Tone modulated ± 5% of center frequency at a rate of 5 Hz.
ALT: Tone alternating between Channel1 and Channel 2: Channel
1is400mSecON, 400mSecOFF followedbyChannel2,400mSec
ON,400mSecOFF.
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.
HighFrequency: Tone testing in the frequency range of 8kHz to 20 kHz
using High Frequency phones or Sound Field.
Thefrequenciesavailablefortesting are:8 kHz, 9kHz,
10kHz,11.2kHz,12.5kHz,14kHz,16kHz,18kHz
and20 kHz(Optional).
TalkForward: Permits the tester to speak through the test microphone into the
selected transducer at the intensity level set by the front panel
controls.
TalkBack: 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/orTalk Back signals.
WxDxH: 20inchesx15inchesx 12.6 inches(LCDraised)
50cmx39cmx32cm
Heightwith LCDlowered-6 inches(15cm)
Weight: 19 pounds 8.7kg
Shipping Weight: 30 pounds 13.6kg
Grason-
S
tadler GSI® 61 CLINICAL
Speech Channel 1 and
Channel 2
Signal Format
Special Test
Capabilities
Communications and
Monitoring
Dimensions and
Weight
vi 1761-0100 Rev. B

Instrument Specifications
90 Watts
Test Headset (Matched set TDH-50P) -------------------------------------------------- 8000-0063
BoneVibrator(B71) ----------------------------------------------------------------------- 8000-0130
Subject Response Handswitch ----------------------------------------------------------- 7874-0156
Test Microphone/Monitor Headset with coiled cord---------------------------------- 1761-9623
Talk Back Microphone -------------------------------------------------------------------- 8000-0039
PatchCords,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
CD Player ----------------------------------------------------------------------------------- 1761-9621
Stereo Tape Cassette ---------------------------------------------------------------------- 1761-9622
Speakers,Basic(90 dB) with cables(125 -16kHz) ------------------------------------- 1761-9630
Speakers, HighPerformance(96dB)with cables (125 -8kHz) ----------------------- 1761-9635
Booster Amplifier(220-240V)withcables,
for use with the High Performance Speakers only----------------------------------- 1761-9636
Booster Amplifier(100-120V)withcables,
for use with the High Performance Speakers only----------------------------------- 1761-9637
SoundFieldSystem,HighPerformance(102dB, 220-240V, 125 -8 kHz)
includes High Performance Speakers and BoosterAmp---------------------------- 1761-9638
SoundFieldSystem,HighPerformance(102dB, 100-120V, 125 -8 kHz)
includes High Performance Speakers and BoosterAmp---------------------------- 1761-9639
PairedInsert Phones(E•A•RTONETM 3A)----------------------------------------------- 1700-9606
E•A•RTONETM ReplacementFoamEartips,Std----------------------------------------- 1700-9604
E•A•RTONETM ReplacementFoamEartips,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)
RemoteRS232/PrinterInterface---------------------------------------------------------- 1761-9680
Printer, Color (NorthAmerica only) ------------------------------------------------------ 1761-9610
Service Manual ----------------------------------------------------------------------------- 1761-0110
Audiocups ---------------------------------------------------------------------------------- 8000-0155
OtoAccess (Network Software for GSI Suite)--------------------------------------- 1015-9600
vii
Power Consumption
Accessories Supplied
Optional Accessories
1761-0100 Rev. B

Catalog Listings GSI61 Clinical Audiomete
r
withou
t
Remote
English ---------------------------------------------------------------------------------- 1761-9700-XX
E
French ----------------------------------------------------------------------------------- 1761-9700-XX
F
German ---------------------------------------------------------------------------------- 1761-9700-XX
G
Italian -----------------------------------------------------------------------------------1761-9700-XXI
Spanish --------------------------------------------------------------------------------- 1761-9700-XXS
GSI61 Clinical Audiometer withUSB 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.
Grason-
S
tadler GSI® 61 CLINICAL
viii 1761-0100 Rev. B

Electromagnetic Compatibility (EMC)
ix
1761-0100 Rev. B

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
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
ValidStimuliCombinations --------------------------------------------------------------------2-8
Valid Transducer Combinations --------------------------------------------------------------2-8
Displays ----------------------------------------------------------------------------------------2-14
Test Microphone/Monitor Headset -------------------------------------------------------------2-17
Optional Accessories ------------------------------------------------------------------------------2-18
Hearing LevelAnd Frequency Limits------------------------------------------------------------2-24
Initial Installation ----------------------------------------------------------------------------------2-26
Single Room Environment -------------------------------------------------------------------2-27
TwoRoomInstallation ------------------------------------------------------------------------2-27
Loudspeaker Installation ---------------------------------------------------------------------2-29
Preface
Chapter 1
Introduction
Chapter 2
Installation
Contents-1
Table of Contents
1761-0100 Rev. B

Preliminary Checks--------------------------------------------------------------------------------- 3-1
Patient Instructions --------------------------------------------------------------------------------- 3-2
Placement of the Earphones ------------------------------------------------------------------3-2
Placement of the Insert Phone ----------------------------------------------------------------3-2
Placement oftheBoneVibrator---------------------------------------------------------------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(PBWords)-----------------------------------------------------------3-4
Alternate Binaural Loudness Balance (ABLB) or Fowler Test -------------------------------- 4-2
Monaural Loudness Balance (MLB) Test-------------------------------------------------------- 4-3
Short-Increment SensitivityIndex(SISI) --------------------------------------------------------- 4-4
Modifications to the SISI test---------------------------------------------------------------- 4-4
High Frequency Testing (Optional)--------------------------------------------------------------- 4-5
High Frequency Testing: Setup Diagrams ---------------------------------------------------4-5
SensorineuralAcuity Level (SAL) Test ---------------------------------------------------------- 4-6
HearingAid Evaluation ---------------------------------------------------------------------------- 4-6
Tone Decay Test ------------------------------------------------------------------------------------ 4-8
LombardorVoice-ReflexTest ---------------------------------------------------------------------- 4-8
Delayed Auditory Feedback (DAF)--------------------------------------------------------------- 4-9
Staggered Spondaic Word Test (SSW)----------------------------------------------------------4-10
Doerfler-Stewart Test ------------------------------------------------------------------------------4-11
Modified Doerfler-StewartTest--------------------------------------------------------------4-11
Pure Tone Stenger Test ---------------------------------------------------------------------------4-12
BiologicalCalibrationCheck----------------------------------------------------------------------- 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
Grason-Stadler GSI
®
61 CLINICAL AUDIOMETER
Chapter 3
Operation
Chapter 4
Special Test
Procedures
Chapter 5
Routine
Maintenance
Contents-2 1761-0100 Rev. B
Grason-Stadler GSI
®
61 CLINICAL AUDIOMETERGrason-Stadler GSI
®
61 CLINICAL AUDIOMETER

Table of Contents
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
HardwareFlowControl ------------------------------------------------------------------------6-5
SoftwareFlowControl -------------------------------------------------------------------------6-5
Cable Connections-----------------------------------------------------------------------------6-5
Data Transfer ----------------------------------------------------------------------------------------- 6-6
Record andField 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 HLRecord ----------------------------------------------------------------------- 6-12
Remote Output Operation---------------------------------------------------------------------------6-13
Type 1- GSI 16 Compatible Short DataRecord----------------------------------------------6-13
Type4 -ErrorRecord --------------------------------------------------------------------------6-16
Type 5 - GSI 61 Short Data Record----------------------------------------------------------6-16
Type 6 - Test Battery Data Record -----------------------------------------------------------6-18
RecordPrefix -----------------------------------------------------------------------------------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
RecordTerminator ----------------------------------------------------------------------------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
Contents-3
Chapter 6
Remote Options
Appendix
Bibliography
Regulatory
S
y
mbols
1761-0100 Rev. B

Grason-Stadler GSI
®
61 CLINICAL AUDIOMETER
Blank page.
Contents-4 1761-0100 Rev. B

The GSI 61 Clinical Audiometer isa 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.
TheGSI 61permits theoutput routingof the testsignal through
earphones(matchedTDH-50P),abonevibrator (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.
Alldata, includingthe instrumentselectedparameters,aredisplayedon anarticulatingLiquid
Crystal Display(LCD). Pure tone testresults are presented ineither a “status” or an audiogram
format. The status format clearly shows all test conditions and permits the calibration check
of inputfromthe microphone or fromrecorded testmaterials. Theaudiogramformatforpure
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 frequencyrange(from8kHz to20kHz)for ototoxicdrugmonitoring.
The GSI 61 has the optional capability of printing the stored audiogram data or of sending the
datatoaremotecomputerthroughanRS232 or USBinterface. TheRS232 and USBinterface
arebidirectionalto allow the operator to transmit test results to a computer and to control the
audiometer from a remotecomputersystem. Thetransmittabledata record canbeconfiguredto
beeither asingle value (threshold and frequency) or battery transfer (all stored parameters for
a patient).
1-1
n
Introduction
Chapter 1
Introduction
1761-0100 Rev. B

Grason-Stadler GSI
®
61 CLINICAL AUDIOMETER
Blank page.
1-2 1761-0100 Rev. B

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 theGSI 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.
2
Installation
External Inspection
n
Accessories Supplied
Test Microphone /
Monitor Headset
Patient Talkbac
k
Microphone
Test Headset
Assembly
Bone
Vibrator
Assembly
Patien
t
Response
Handswitch
Not Shown: For Sound Booth use:
O
t
her :
Handswitch Patch Cord (1)
Bone Vibrator Patch Cord (1)
Earphone Patch Cord (2)
Instruction Manual.....Power Cord and
GSI Suite CD 2-1
Chapter 2
Installation
1761-0100 Rev. B

The connectors on the rear panel of the GSI61 are shown in the following diagram.
The label and jacks are visible looking down onto the instrument, behind the LCD.
R9 R8 R7 R6 R5 R4 R3 R2 R1
(Modular Phone Jack)
Pin Function Output Voltage Impedance
1 Mic High and +6 VDC 0.2 to 6.0 mV RMS 1.8 K ohm (output)
2 Phone Low GND 0ohm
3 Phone High 3.0 mV to 1.0 V 300ohm
4 MicShield GND 0ohm
(RCAplug)
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
(3.5 mm stereo jack)
Position Function Output Voltage Impedance
1 Tip MicHigh 0.2 to 2.0 mV RMS and +6V AC 10 K ohm
2 Ring Mic Low - - - - - - - - - -
3 Shield Chassis Ground - - - - - - - - - -
(1/4 inch stereo jack)
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
(1/4 inch monaural jack)
Grason-Stadler GSI
®
61 CLINICAL AUDIOMETER
Connectors, Controls and Indicators
Rear Panel
R1 - Monitor
Headset
R2 - Ext A and Ext
B
R3 - Talkback
Microphone
R4 - Left and Right
Ear
Phone Outputs
R5 - Left and Right
2-2 1761-0100 Rev. B

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 (1/4 inch phone jack)
Response
Handswitch Accepts plug from the cable attached to the patient’s response handswitch or
handswitch patch cord.
Pin Function Voltage Impedance
1 Shield GND 0 ohm
2 Digital GND GND 0 ohm
3 Response input +5V/GND 1K ohm/0 ohm
R8 - CD Player Power (2 pin power jack)
Jack Provides 5 V DC for CD Player.
R9 - Dip Switch/Cal Aneighthpositionbankofswitchesaccessiblebyanauthorizedservicerepresentative.
Switch
R10 – Speakers (5 pin Din connector) Located on rear of instrument.
Connects to left and right loudspeakers.
Pin Function Impedance
1 Left speaker (high) 1.0 ohm
2 Left GND 0ohm
3 Right speaker (high) 1.0ohm
4 Left speaker (low) 1.0 ohm
5 Right speaker (low) 1.0 ohm
SHLD RightGND 0ohm
2-3
1761-0100 Rev. B

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
initializationstate.
The frequency is set at 1000 Hz and:
Channel 1 Channel 2
Steady tone NB Noise
Phone-Right Phone-Left
0 dB HL -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:
Remote/Printer Option
RS 232 Remote Port
A mini-DIN connector uses a standard Apple “Hayes Modem” cable (supplied) to
provide serial connection to theequipment.
USB Remote Port
A Standard A/B USB cable provides connection to a PC.
Printe
r
Port
A 25-pin PC-Printer Interface Connector. Connects to the printer via a standard PC-
parallel 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.
Grason-Stadler GSI
®
61 CLINICAL AUDIOMETER
!
Printer Port
Dip Switches
Left Side
Panel
RightSide
Panel
2-4
RS232
Remote Port
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.
1761-0100 Rev. B