GSI TympStar User manual Versions 1

Grason-Stadler

GSI TympStar Versions 1 and 2

Middle-Ear Analyzer

Reference Instruction Manual 2000-0110, Rev3.0 Printed October, 2002

Grason-Stadler - A Division of VIASYS Healthcare 5225 Verona Road, Building 2, Madison, WI 53711 TEL: 608-441-2323, 800-700-2282, FAX: 608-441-2234

Service Manual

GSI

Grason-Stadler

Title: GSI TympStar Versions 1 and 2

Middle-Ear Analyzer Service Manual

Date: October, 2002

transmitted in any form or by any means without the prior written permission of Grason-Stadler. The information in this publication is proprietary to Grason-Stadler.

Part number: 2000-0110

Printing history: November, 2001 First printing Rev 1.0

June, 2002 Second printing Rev 2.0 October, 2002 Third printing Rev 3.0

Warranty for the GSI TympStar Versions 1 & 2

Grason-Stadler warrants the GSI TympStar Versions 1 and 2 to be free of original defects in material and workmanship and to perform in accordance with manufacturers specifications for a period of one year from the date of purchase. If this instrument or any component thereof is found to be defective or at variance from the manufacturers specifications during the warranty period, Grason-Stadler will repair, replace, or recalibrate the instrument or component at no cost to the purchaser.

This warranty only applies to instruments purchased new from Grason-Stadler or its authorized distributors or representatives. The purchaser must return the instrument directly to Grason-Stadler or an authorized GSI TympStar distributor or representative and bear the costs of shipping.

This warranty does not cover breakage or failure due to tampering, misuse, neglect, accidents, modification, or shipping, and is void if the instrument is not used in accordance with manufacturers recommendations or if repaired or serviced by other than Grason-Stadler or a Grason-Stadler authorized representative.

WARNING

The GSI TympStar Versions 1 and 2 are designed to be used with a hospital grade outlets. Injury to personnel or damage to equipment can result when a three-prong adapter is connected between the instrumentss power plug and an A/C outlet or extension cord.

Accessory Hazard Warning

This IEC 601-l/CSA C22.2 No. 601.1M90 listed medical instrument should be interconnected with accessories that have proper electrical compatibility and which are listed as conforming to Part 1: General Requirements for Safety of the UL Medical Electrical Equipment Standard UL2601-1. 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.

User manuals

Installation, setup and operating information can be found in the Reference Instruction Manuals:

TympStar Version 1: 2000-0100 TympStar Version 2: 2000-0120

Service personnel

Electrical safety

CMOS handling

Repair and/or bench testing of the GSI TympStar Version 1 and Version 2 instruments should be performed only by trained personnel. The following instructions are provided primarily for use by persons who are skilled in the repair of electronic equipment.

CAUTION The GSI TympStar Version 1 and Version 2 instruments are IEC 601-1/CSA approved; consequently if any parts are replaced during the repair of these units, only exact replacements should be made. Any alterations of the present electrical or mechanical construction or components will void these safety approvals.

Many of the integrated circuits on the PC Boards are constructed of CMOS and NMOS materials. Please observe the following precautions:

CAUTION Failure to observe the following precautions whenever a circuit board or an integrated circuit package is handled can result in damage to the GSI TympStar Version 1 or Version 2 instrument. Please observe these precautions:

1) Place the instrument and parts on a grounded, conductive work surface.

2) Ground yourself (with a strap having about 1 Meg-Ohm resistance) to discharge or prevent static charges.

3) Ground the frame of any test instrument or soldering iron to be used.

4) If any circuit boards are to be stored or transported, enclose them in conductive (antistatic) envelopes.

Contents

Introduction ..................................1-1

General ..................................................................................................................... 1-1

Version 1 ................................................................................................................... 1-2

Version 1 equipment connections and options ..................................................... 1-2

Version 2 ................................................................................................................... 1-3

Version 2 equipment connections and options ..................................................... 1-3

The probe ................................................................................................................. 1-4

Instrument controls ................................................................................................. 1-5

Hardkeys and softkeys ......................................................................................... 1-5

Rotary pressure control ....................................................................................... 1-5

Test modes and menu navigation .......................................................................... 1-5

Changing parameter settings .................................................................................. 1-7

Menu diagrams ........................................................................................................ 1-7

GSI default parameter settings ............................................................................... 1-7

Specifications ...............................2-1

Introduction .............................................................................................................. 2-1

Standards ................................................................................................................. 2-1

Version 1 Specifications ................................................... 2-1

Sensitivity ranges .................................................................................................... 2-2

Probe signal .............................................................................................................2-2

Pneumatic System ................................................................................................... 2-3

Acoustic Reflex Activating (Stimulus) Signal......................................................... 2-3

Stimulus Presentation Control ................................................................................ 2-5

Temporal Specifications of Stimulus Presentation ............................................... 2-5

Environmental .......................................................................................................... 2-6

Warm-Up Time.......................................................................................................... 2-6

Calibration Stability.................................................................................................. 2-7

Connectors ............................................................................................................... 2-7

Electrical ................................................................................................................... 2-8

Supplied Accessories .............................................................................................. 2-9

Mechanical ............................................................................................................... 2-9

Materials of manufacture ........................................................................................ 2-9

Contents - 1GSI TympStar Version 1 and Version 2 Service Manual

Table of Contents

Calibration requirements ......................................................................................... 2-9

Version 2 Specifications ................................................. 2-10

Standards ............................................................................................................... 2-10

Sensitivity ranges .................................................................................................. 2-11

Temporal Latency in ARLT Mode .......................................................................... 2-12

Multi Frequency ..................................................................................................... 2-12

Probe Signal (Sinusoidal) ...................................................................................... 2-12

Pneumatic System ................................................................................................. 2-13

Acoustic Reflex Activating (Stimulus) Signal....................................................... 2-13

Click Stimulus ........................................................................................................ 2-16

Stimulus .................................................................................................................. 2-16

Presentation Control.............................................................................................. 2-16

Temporal Specifications Of Stimulus Presentation ............................................ 2-17

Environmental ........................................................................................................ 2-17

Warm-Up Time........................................................................................................ 2-17

Calibration Stability................................................................................................ 2-18

Connectors ............................................................................................................. 2-18

Electrical ................................................................................................................. 2-19

Supplied Accessories ............................................................................................ 2-20

Mechanical ............................................................................................................. 2-20

Materials of manufacture ...................................................................................... 2-20

Calibration requirements ....................................................................................... 2-20

Operation summary......................3-1

Front panel controls ......................................................... 3-1

Hardkeys................................................................................................................... 3-2

Tymp ....................................................................................................................3-2

Reflex ................................................................................................................... 3-2

Etf ......................................................................................................................... 3-2

Special ................................................................................................................. 3-2

Page ..................................................................................................................... 3-2

Print ...................................................................................................................... 3-2

Remote ................................................................................................................. 3-2

Data Transfer ....................................................................................................... 3-2

Pressure control ................................................................................................... 3-2

Manual ................................................................................................................. 3-2

Hold ...................................................................................................................... 3-2

Stop ...................................................................................................................... 3-2

Start ...................................................................................................................... 3-3

Stimulus ............................................................................................................... 3-3

Intensity ................................................................................................................ 3-3

Contents - 2

Grason-Stadler

Table of Contents

Present ................................................................................................................. 3-3

LCD hardkeys ........................................................................................................... 3-3

Clear .................................................................................................................... 3-3

Erase .................................................................................................................... 3-3

Return................................................................................................................... 3-3

Softkeys .................................................................................................................... 3-3

Menus and LCD screens ................................................. 3-4

Menus ....................................................................................................................... 3-4

Program modes ........................................................................................................ 3-5

Version 1 probe tone frequencies .......................................................................... 3-5

Version 2 probe tone frequencies .......................................................................... 3-5

Version 1 LCD graphic traces ................................................................................. 3-5

Version 2 LCD graphic traces ................................................................................. 3-5

Probe lights .............................................................................................................. 3-6

LCD screen............................................................................................................... 3-6

Erasing and clearing test data ................................................................................ 3-7

Version 2 External reflex test stimuli ..................................................................... 3-7

Paging test data ....................................................................................................... 3-7

Version 2 cursor....................................................................................................... 3-8

Printing tests ............................................................................................................ 3-8

Preparing an external printer .................................................................................. 3-8

Setting the printer parameters .............................................................................. 3-9

Left column printout data .................................................................................... 3-10

Color or black and white .................................................................................... 3-10

Changing Instrument Versions ....................................... 3-11

Changing from a Version 2 to a Version 1 ........................................................... 3-11

Switching to V1 temporarily ................................................................................ 3-12

Switching back to V2 .......................................................................................... 3-12

Switching to V1 permanently .............................................................................. 3-12

Changing from a Version 1 to a Version 2 ........................................................... 3-13

Obtaining a License Code .................................................................................. 3-14

Replacing the V1 Probe with a V2 Probe ........................................................... 3-15

Switching to Version 2 software ......................................................................... 3-16

Version 1 test procedures .............................................. 3-17

Tymp diagnostic ..................................................................................................... 3-17

Manual Tymp .......................................................................................................... 3-17

Tymp screening ..................................................................................................... 3-18

Reflex threshold ..................................................................................................... 3-18

Automatic Auto Zero ........................................................................................... 3-18

Mark Threshold .................................................................................................. 3-19

Reflex Threshold Seeking .................................................................................. 3-19

Reflex decay ........................................................................................................... 3-20

Eustachian tube function ...................................................................................... 3-20

Pressure Swallow Test (intact TM) ..................................................................... 3-20

GSI TympStar Version 1 and Version 2 Service Manual

Contents - 3

Table of Contents

Perforated Ear Test (Perforated TM) .................................................................. 3-20

Auto sequence testing .......................................................................................... 3-21

Programming auto sequence tests ...................................................................... 3-21

Version 2 test procedures .............................................. 3-22

Tymp diagnostic ..................................................................................................... 3-22

Manual tymp........................................................................................................... 3-23

Tymp screening ..................................................................................................... 3-23

Reflex threshold ..................................................................................................... 3-24

Automatic auto zero ........................................................................................... 3-25

Mark Threshold .................................................................................................. 3-25

Reflex Threshold Seeking .................................................................................. 3-25

Reflex decay ........................................................................................................... 3-26

Acoustic reflex latency test (ARLT) ...................................................................... 3-26

Acoustic reflex sensitization (A.R. SENSI) ........................................................... 3-27

Eustachian tube function ...................................................................................... 3-28

Pressure Swallow Test (intact TM) ..................................................................... 3-28

Perforated Ear Test (Perforated TM) .................................................................. 3-28

Multiple frequency tympanometry (MULTIPLE Hz) ............................................. 3-29

Auto sequence testing .......................................................................................... 3-30

Programming auto sequence tests ...................................................................... 3-31

Calibration....................................4-1

Introduction .............................................................................................................. 4-1

When to calibrate the TympStar .............................................................................4-2

Calibration requirements ......................................................................................... 4-2

Complete calibration sequence ............................................................................4-2

Routine calibration sequence ...............................................................................4-3

Preparing for calibration ................................................... 4-4

Tools and equipment required ................................................................................ 4-4

Cleaning the probe and Contra phone ................................................................... 4-4

Probe .................................................................................................................... 4-4

Contra phone........................................................................................................ 4-5

Cal/Normal switch ............................................................ 4-6

Cal Option DIP switch ...................................................... 4-6

Switch 1: Factory use only ................................................................................... 4-7

Switch 2: GSI/custom RTL transducer calibration.............................................. 4-7

Switch 3: Unused ................................................................................................... 4-7

Switch 4: Unused ................................................................................................... 4-7

Switch 5: Unused ................................................................................................... 4-7

Switch 6: Diagnostic mode ................................................................................... 4-8

Contents - 4

Grason-Stadler

Table of Contents

Hardware Diagnostics ............................................................................................. 4-8

DAC LEVELS ....................................................................................................... 4-9

IPSI SOURCE ..................................................................................................... 4-11

IPSI ON/OFF ...................................................................................................... 4-11

CONTRA SOURCE ............................................................................................ 4-11

CONTRA ON/OFF ............................................................................................. 4-12

MUX INPUTS ..................................................................................................... 4-12

PROBE/FILER .................................................................................................... 4-13

ROUTING ........................................................................................................... 4-14

PROBE ON/OFF ................................................................................................ 4-15

PORTS DIAG. .......................................................................................................... 4-15

RS-232 INT. ON/OFF ......................................................................................... 4-15

RS-232 INT. ON/OFF ......................................................................................... 4-16

PARALLEL ON/OFF ........................................................................................... 4-16

MISC. DIAG ............................................................................................................. 4-17

CALENDAR CLOCK ........................................................................................... 4-18

DISPLAY & LEDS ............................................................................................... 4-20

KEYS .................................................................................................................. 4-21

DIP SWITCHES .................................................................................................. 4-22

EEPROM ............................................................................................................ 4-22

SOFTWARE TIMER ........................................................................................... 4-23

WATCHDOG TIMER .......................................................................................... 4-24

ERROR LOG ........................................................................................................... 4-25

Switch 7: Self-Cal .................................................................................................. 4-26

Switch 8: Load default calibration data ............................................................... 4-26

Probe serial number....................................................... 4-26

Resolving problems ....................................................... 4-27

Calibration procedures ................................................... 4-28

Hardkeys ............................................................................................................ 4-28

Softkeys ............................................................................................................. 4-29

Printing calibration sheets .................................................................................. 4-30

Adjusting Cal HL and Target SPL levels............................................................. 4-31

Custom transducers .............................................................................................. 4-32

Transducerconnections ........................................................................................ 4-32

Calibration requirements ....................................................................................... 4-33

Complete calibration sequence .......................................................................... 4-33

Routine calibration sequence ............................................................................. 4-33

TympStar Version 1 Calibration...................................... 4-33

Version 1 Calibration Procedures................................... 4-34

Self-Cal ................................................................................................................... 4-34

Loading default data .............................................................................................. 4-35

Contra, Ipsi and Probe tone calibration ............................................................... 4-36

Contra SPL Cal .................................................................................................. 4-36

GSI TympStar Version 1 and Version 2 Service Manual

Contents - 5

Table of Contents

Ipsi SPL Cal ....................................................................................................... 4-37

Probe Tone SPL Cal............................................................................................... 4-38

Y Cal........................................................................................................................ 4-39

Altitude Cal ......................................................................................................... 4-39

Pressure Cal........................................................................................................... 4-41

Set ambient ........................................................................................................ 4-42

Set -600/400 ............................................................................................................ 4-44

Leak rate ............................................................................................................ 4-45

Verify Cal ................................................................................................................ 4-47

Diagnostic............................................................................................................... 4-49

Returning to the Normal Test Mode ..................................................................... 4-50

TympStar Version 2 Calibration ..................................... 4-51

Calibration requirements ...................................................................................... 4-51

Complete calibration sequence .......................................................................... 4-51

Routine calibration sequence ............................................................................. 4-51

Version 2 Calibration Procedures .................................. 4-52

Self-Cal ................................................................................................................... 4-52

Loading default data ........................................................................................... 4-53

Contra, Ipsi and Probe tone calibration ............................................................... 4-54

Contra and Ipsi Cal ............................................................................................ 4-54

External Input Calibration ................................................................................... 4-55

Click Calibration ................................................................................................. 4-55

Contra SPL Cal ....................................................................................................... 4-56

Ipsi Channel ....................................................................................................... 4-56

Contra Channel .................................................................................................. 4-57

Ipsi SPL Cal ............................................................................................................ 4-59

Ipsi Channel ....................................................................................................... 4-59

Contra Channel .................................................................................................. 4-60

Probe Tone SPL Cal............................................................................................... 4-62

Y/B/G Cal ................................................................................................................ 4-64

Altitude Cal ......................................................................................................... 4-64

Pressure Cal and diagnostics ............................................................................... 4-66

Returning to Normal Test Mode ........................................................................... 4-66

Disassembly ................................. 5-1

Introduction .............................................................................................................. 5-1

Disassembly Procedure ................................................... 5-3

Tools Required .........................................................................................................5-3

Opening the cover ...................................................................................................5-3

Removing the analog board ................................................................................... 5-4

Removing the Pump ................................................................................................ 5-6

Contents - 6

Grason-Stadler

Table of Contents

Removing the power supply ................................................................................... 5-8

Removing the power module ................................................................................. 5-9

Fuse holder .......................................................................................................... 5-9

Removing the LCD contrast control .................................................................... 5-10

Removing the printer board .................................................................................. 5-11

Removing the printer ............................................................................................. 5-12

Removing the PC104 Board .................................................................................. 5-15

Removing the digital board ................................................................................... 5-17

Removing the LCD or Softkeypad cables ............................................................ 5-20

Removing the LCD ................................................................................................. 5-25

Removing the LCD front panel label (softkey panel)........................................... 5-27

Removing the instrument front panel label .......................................................... 5-29

Removing panel keypads....................................................................................... 5-29

System Level Parts ......................6-1

General ..................................................................................................................... 6-1

Assembly drawings .................................................................................................. 6-1

Case/chassis ............................................................................................................ 6-2

Overall assembly ..................................................................................................... 6-4

LCD assembly ..........................................................................................................6-5

Top case assembly .................................................................................................. 6-6

Bottom case assembly ............................................................................................ 6-7

Instrument assembly ............................................................................................... 6-8

Labels .......................................................................................................................6-9

Printer Assembly .................................................................................................... 6-11

Hardware description ................... 7-1

General ..................................................................................................................... 7-1

System boot sequence .................................................... 7-1

Pre-CP Control ......................................................................................................... 7-1

Main() ........................................................................................................................ 7-1

Set_op_mode() ........................................................................................................ 7-3

Tymp_sk() ................................................................................................................. 7-4

Interconnection diagram .................................................. 7-5

Block diagram description of assemblies ............................................................. 7-6

LCD assembly ..................................................................................................... 7-6

Printer................................................................................................................... 7-6

Probe ................................................................................................................... 7-6

GSI TympStar Version 1 and Version 2 Service Manual

Contents - 7

Table of Contents

Pump ................................................................................................................... 7-6

Digital board ......................................................................................................... 7-7

PC104 board ........................................................................................................ 7-7

Analog board........................................................................................................ 7-7

Power supply board .............................................................................................. 7-8

Printer board ........................................................................................................ 7-8

System assembly diagram .............................................. 7-9

Troubleshooting ...........................8-1

System power supply measurements .............................. 8-1

Power Supply (J2) .................................................................................................... 8-1

Power Supply (set +5VDC) ...................................................................................... 8-2

Analog Board (J7) .................................................................................................... 8-2

Analog Board (J6) .................................................................................................... 8-2

Analog Board (J10) .................................................................................................. 8-3

Digital Board (J28) ................................................................................................... 8-3

Digital Board (J34) ................................................................................................... 8-3

Printer Board (Full View) .........................................................................................8-4

Printer Board (J6) .................................................................................................... 8-4

Printer Board (J4) .................................................................................................... 8-4

Printer Board (J8) .................................................................................................... 8-5

Pressure Potentiometer (Digital Board) .................................................................8-5

Error Codes ..................................................................... 8-6

CP Error codes ........................................................................................................8-6

SP Error codes....................................................................................................... 8-16

Error Messages .............................................................. 8-19

LCD problem symptoms and probable causes .............. 8-22

Probe problem symptoms and probable causes ............ 8-22

Pump problem symptoms and probable causes ............ 8-23

Printer problem symptoms and probable causes ........... 8-23

Hardware Diagnostic mode ............................................ 8-24

Functional description ........................................................................................... 8-24

Pressure A/D MUX ................................................................................................. 8-24

Mic. MUX................................................................................................................. 8-25

Probe tone and filter mode ................................................................................... 8-25

DAC levels .............................................................................................................. 8-25

Routing ................................................................................................................... 8-25

IPSI/CONTRA and OSC l/OSC 2 ............................................................................ 8-26

Contents - 8

Grason-Stadler

Introduction

General

The GSI TympStar Version 1and Version 2 Middle-Ear Analyzers are technically advanced, computer-based admittance instruments designed to be used in clinical or research settings. The TympStar builds on the sophistication, functionality and flexibility of the GSI 33, offering unparalleled testing capabilities. It contains total capabilities for complete, manual or automatic diagnostic testing for analysis of middle ear function.

Operators have a choice of using GSI preprogrammed test parameters, or programming their own test criteria. A large liquid crystal display (LCD) clearly displays test parameter choices and the possible alternatives. Admittance and pressure indications are shown on the LCD along with a continuous digital readout. Test status and invalid choices are also shown on the LCD.

Test results are displayed in real-time. The user can view the results as they are being measured and then has the choice of printing the display or retesting the patient. The high-speed printer generates reports in concise graphical formats that are easy to read.

This manual addresses the service requirements of the Version 1 and the Version 2 instruments, and calls attention to the differences when necessary. Please refer to the appropriate Reference Instruction Manual for more detailed information regarding instrument installation and operation.

1 - 1GSI TympStar Version 1 and Version 2 Service Manual

Chapter 1

Version 1

Version 1 equipment connections and options

Admittance (Y) may be measured with a probe tone frequency of 226 Hz. The extensive battery of test mode choices include:

The tympanometric measurement results are automatically scaled and presented in equivalent ml of compliance at Y, 226 Hz. Sensitivity scales for the display of reflex measurement results can be selected manually. A cursor is available in all test modes for calling out numeric positions on the X and Y axes.

TympStar Version 1 options that can be connected to the rear panel include RS232 serial communication, a keyboard for entering patient information and a VGA monitor for displaying test results. Other options offered for the TympStar Version 1 for managing and archiving data, include:

 Internal memory for storing up to 26 test results  Data export to an external PC via RS232 serial interface

1 - 2

Not used in TympStar

Version 1

Grason-Stadler

Introduction

Version 2

Version 2 equipment connections and options

Admittance (Y), and its components Susceptance (B) and Conductance (G), may be measured with probe tone frequencies of 226, 678, and 1000 Hz. The extensive battery of test mode choices include:

 Diagnostic Tympanometry  Acoustic Reflex Threshold and Decay Measurements  Eustachian-Tube Function Testing (Both intact and perforated eardrums)  Screening Tympanometry/Reflex (Automatic Only)  Acoustic Reflex Latency Testing  Acoustic Reflex Sensitization  Multiple Frequency Tympanometry (250 Hz to 2000 Hz)

The tympanometric measurement results are automatically scaled and presented in equivalent ml of compliance at Y, 226 Hz. All B and G measurements and measurements performed at probe tone frequencies of 678 Hz and 1000 Hz are expressed in mmhos. Sensitivity scales for the display of reflex measurement results can be selected manually. Reflex test stimuli can be input from an external source and presented via external control. A cursor is available in all test modes for calling out numeric positions on the X and Y axes.

TympStar options that can be connected to the rear panel include an external stimulus source, an external Present control, RS232 serial communication, a keyboard for entering patient information and a VGA monitor for displaying test results. Other options offered for the TympStar for managing and archiving data, include:

 Internal memory for storing up to 26 test results  Data export to an external PC via RS232 serial interface

Used only in TympStar

Version 2

GSI TympStar Version 1 and Version 2 Service Manual

1 - 3

Chapter 1

The probe

The innovative lightweight probe is designed for patient comfort, ease-of-seal, and accurate test results. A wide variety of both standard and special sized eartips are supplied with the GSI TympStar to hermetically seal the ear canal. In addition, a set of screening eartips is provided for screening tymp and reflex tests.

The operator has a choice of three mountings to support the probe box; the standard lightweight shoulder mounting, standard clothes clip, or an optional operator wrist attachment. The probe box has 2 LEDs to indicate test status.

Within the probe box there are two small loudspeakers, a microphone and a pressure transducer. One loudspeaker delivers the probe tone to the ear canal,

while the microphone monitors the intensity of the probe tone within the ear canal.

The second loudspeaker delivers the ipsilateral (ipsi) stimuli to the ear canal.

The contralateral (contra) insert phone contains its own loudspeaker. The

pressure within the ear canal can be varied within the range of +400 daPa

to -600 daPa. At no time is it possible to exceed specified maximum

limits. Pressure can be varied automatically or manually and from nega-

tive to positive or from positive to negative values. Pressure within

the ear canal is monitored continuously in order to maintain pressure

accuracy throughout each test sequence.

1 - 4

Grason-Stadler

Introduction

Instrument controls

Hardkeys and softkeys

A combination of hardkeys and softkeys are used to select the test modes and parameters and to conduct tests.

Hardkeys are located on the front panel and the sides of the LCD panel and provide fixed functions that do not change. Softkeys are located directly under the LCD and change to support the requirements of a test session.

LCD panel

Softkey

Hardkeys

Front panel

Pressure control

Rotary pressure control

Test modes and menu navigation

Tymp hardkey

A rotary pressure control is also provided to change or fine-tune pressure within the ear canal.

Selecting a test mode by pressing a hardkey causes the required test screen to be displayed on the LCD with the appropriate menu of test parameters shown across the bottom. The softkeys are then used in conjunction with a few hardkeys to navigate through the menus and set parameter values for the selected tests. For example, pressing the TYMP hardkey causes the Tymp Diagnostic screen to be displayed.

Tymp Diagnostic screen

Tymp parameter menu

GSI TympStar Version 1 and Version 2 Service Manual

1 - 5

Chapter 1

Pressing the softkeys displayed across the bottom of the LCD allows the user to navigate through the Tymp Diagnostic parameter menus diagrammed below. These menus are from the Version 1, however, the process is the same in both versions. GSI default softkey selections are circled on menu diagrams.

The first level of parameter menu selections includes AUTO SEQUENCE, P-RANGE, START, GRADIENT, EAR and MORE.

First level

Second level

First level

AUTO

SEQUENCE

P-RANGE

daPa

NORMAL WIDE

START

daPa

-600 -400 -200 +200 +400 MORE

-500 -300 0 +300 MORE

Default

selection

GRADIENT

TYMP WIDTH RATIO daPa ml

P-RATE

daPa/s

12.5 50 200 600/200

OFF

EAR

RIGHT LEFT

BASELINE

ON OFF

Second level

1 - 6

A second level of menus can be displayed by pressing the MORE softkey and includes P-RATE, BASELINE and MORE.

The MORE softkey is used to toggle between the top and lower levels of menus while the test screen portion above the softkeys remains unchanged.

Grason-Stadler

Introduction

Sub-menu of

START daPa

Pressing a parameter menu softkey causes a sub-menu of parameter settings to be displayed. Often submenus will also contain MORE softkey selections that provide access to additional setting alternatives.

Sub-menu of

START daPa

START

daPa

-600 -400 -200 +200 +400 MORE

-500 -300 0 +300 MORE

Changing parameter settings

Menu diagrams

GSI default parameter settings

Settings can be changed for a selected parameter by pressing the desired softkey as shown in this example of changing the Probe Hz from 226 to 1000.

Making the new selection returns the display to the previous menu level with the new setting shown above the selected parameter.

If no change is desired, the display can be returned to the previous level by pressing the RETURN hardkey.

In the manner described above, menus can be navigated and settings can be changed for any of the test modes.

Menu structure diagrams like the diagrams shown on these pages will be used throughout the remainder of this manual as a convenience to the user.

START

GSI default parameters are circled on menu structure diagrams shown throughout the remainder of this manual.

-600 -400 -200 +200 +400 MORE

GSI default value

daPa

-500 -300 0 +300 MORE

GSI TympStar Version 1 and Version 2 Service Manual

1 - 7

Chapter 1

1 - 8

Grason-Stadler

Specifications

Introduction

Detailed specifications are provided in this chapter for the TympStar Version 1 and TympStar Version 2 instruments. The specifications for each instrument can also be found in its corresponding Reference Instruction Manual.

Version 1 Specifications

Standards

The GSI TympStar Version 1 meets or exceeds the following standards and specifications for aural acoustic admittance instruments: IEC 1027 1991-03 ANSI S3.39-1987 ANSI S3.6-1996 ANSI S3.7-1995 IEC 645-1 1992 IEC 126-1973 (also BS 6111-1981) BS ISO 389-2 1994

Y2K Compliant UL 2601-1 Part 1: General Requirements for Safety CSA C22.2 No. 601.1-M90 (Canada)

CE Mark per Medical Device Directive (93/42/EEC) European Representative: Mr. Leo Hoogendoorn Nicolet Biomedical GMBH Saalackerstrasse 8 63801 Kleinostheim, Germany Tel: 011-49-6027-46980 Fax: 011-49-6027-469815

EN60601-1:1990 Safety Requirements for Medical Electrical Equipment EN60601-1-2 Medical Electrical Equipment Emissions and Immunity Requirements

This equipment has been tested for radio frequency emissions and has been verified to meet Radiated and Conducted Emissions per EN 55011-1998, Group 1, Class A and per CISPR, Class A.

GSI TympStar Version 1 and Version 2 Service Manual

2 - 1

Chapter 2

Sensitivity ranges

The following admittance measurements give maximum range at 226 Hz, Y in ml.

Table 1: Tymp Mode

Frequency Digital Read-Out Graphical

Including Cursor Display

226 Hz -7.0 to +7.0 -1.0 to +7.0

Accuracy at 226Hz: 0.1 ml or 5%, whichever is greater.

Table 2: Reflex Mode

Frequency Digital Read-Out Graphical

Including Cursor Display

Probe signal

226 Hz -7.0 to +7.0 -0.16 to +0.80

+0.16 to -0.80

Accuracy: 226 Hz is 0.02 ml or 5%,whichever is greater.

Sinusoidal signal with the following characteristics: Frequency: 226 Hz Frequency accuracy: ±1% Harmonic distortion: <2%

(Measured in an HA-1 2cc coupler)

Signal level: 85 dB SPL

(In Real Ear and in Normal Test Mode)

NOTE The probe tone level is set to be nominally 70 dB HL.

Signal level accuracy: ±1.5 dB SPL

Grason-Stadler2 - 2

Specifications

Pneumatic System

Acoustic Reflex Activating (Stimulus) Signal

Pressure Maximum Limits: -800 daPa to +600 daPa Programmed Pressure Ranges:

Normal: + 200 to - 400 daPa Wide: + 400 to - 600 daPa

Pressure Accuracy: ±10% or ±10 daPa, Whichever is greater in cavities

from 0.5 cc to 5.0 cc.

Pressure Sweep Rate: 12.5 daPa/sec

50 daPa/sec

600/200 daPa/sec Manual Sweep Rate Limit: 600 daPa/sec Sweep Rate Accuracy: ±10% Pressure System Leak Rate: < 1. 0 daPa/sec

(Measured at -600 and +400 daPa, while pressure servo is disabled.)

Pure Tone Stimulus

Frequencies for Contra phone and for Ipsi phone with time multiplexed stimulus. See Table 3.

Frequency Accuracy: ±1% Total Harmonic Distortion (Acoustically): <2%

(Measured 5 dB HL below guaranteed maximum HL)

Noise Stimulus

The uniformity of the spectrum level of acoustic pressure for the noise signal over 20 averages measured acoustically within their respective band limits will be:

±10 dB for insert or probe type earphones ±5 dB for supra-aural type earphones

Noise Band Widths:

Low Band: 125 -1600 Hz High Band: 1600 - 4000 Hz Broad Band: 125 - 4000 Hz (Relative to level at 1 kHz) Band-edges accurate to within ±15%

Roll off rate: >12 dB/Octave

Stimulus Level Control Tone Stimulus: The transfer of reference equivalent threshold values are based on the article; Reference Threshold Levels For The ER-3A Insert Phone, by Laura Ann Wilber, Barbara A. Krueger and Mead C. Killion, J. Acoustic Soc. Am. Suppl. 1, Vol. 81 Spring 1987. GSI determined the transfer data from an IEC 711 coupler to an ANSI HA-1 coupler. Using this data, the reference threshold values were determined for both the Ipsi and Contra insert earphones for calibration in an ANSI HA-1 2cc coupler.

Noise Stimulus: The transfer of reference threshold values was done by GSI using the Threshold Determination Method. The transfer data from an IEC 711 to an ANSI HA- 1 coupler was determined by GSI.

2 - 3GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Intensity levels are reduced as a function of volume at a rate of 1 dB SPL for each .1 ml. Intensity reduction begins at 1.2 ml.

Table 3: Upper limit of HL range in Reflex Threshold Mode

110

105

Lower limit of HL range for all stimulus signals (35 dB HL). Hearing Level Increment: 5.0 dB Hearing Level Increment Accuracy: ±0.5 dB Hearing Level Control Linearity: ±1.0 dB

Grason-Stadler2 - 4

Specifications

Stimulus Presentation Control

Signal ON/OFF Ratio: >70 dB

OFF mode signal level: <20 dB SPL

Signal To Noise Ratio: >70 dBA

Measured with disabled probe signal and A weighting for noise measurement. Residual noise: <25 dBA SPL

(Stimulus Present switch in OFF position)

Unwanted Acoustic Probe Signals: <60 dBA

Measured while pump is operating and probe tone is disabled. Measure it with A weighted filter in SLOW Time mode. The noise in normal operating mode will not effect the immittance measurement accuracy.

Signal separation between Ipsi and Contra channels; all frequencies: >70 dB

(Measured at the probes with the ON channel set to 90 dB)

Leaked signal: <20 dB SPL

The radiated acoustic noise from the instrument (with reflex stim off) when measured at 1 meter from the instrument, shall be: <50 dBA (A weighting and SLOW averaging)

Temporal Specifications of Stimulus Presentation

Steady State Stimulus

Initial Delay (elapsed time from present bar activation to 10% stimulus amplitude): < 100 msec

Terminal Delay (elapsed time from present bar deactivation to 90% stimulus amplitude): <100 msec

Rise time: 7.5 ± 2.5 msec Fall time: 7.5 ± 2.5 msec

Multiplexed Stimulus (Used in Reflex Threshold test mode)

Period data for frequencies: 250 and 500 Hz:

Period 124 msec Stimulus on time 44 msec Stimulus off time 62 msec Rise and fall time 18 msec

Period data for all other frequencies:

Period 115 msec Stimulus on time 44 msec Stimulus off time 53 msec Rise and fall time 18 msec

Temporal Spec. Accuracy: ±10% or 5 msec, whichever is greater

2 - 5GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Environmental

Warm-Up Time

The GSI TympStar Version 1 meets ANSI S3.6-1996 Standards for temperature and humidity specifications, and it meets the UL 2601-1, CSA 22.2 and IEC606011 standards for safety.

Temperature:

Storage: -40 degrees C to +75 degrees C Operating: +15 degrees C to +35 degrees C

Humidity: 90% at 35 degrees C (non-condensing)

At room temperature; +15°C to +35°C: 10 Minutes At room temperature; below +15°C: 1 Hour

Grason-Stadler2 - 6

Specifications

Calibration Stability

Connectors

All GSI TympStar Version 1 specifications are met over the range of specified power line, temperature and humidity variations.

Power Line:

Voltage Variation: ±10%

Frequency Variation: ± 5% Power line short term variation which affects the performance of the instrument will turn off all probe and stimulus signals.

Power Rating: 120 Watts maximum Line Voltage Range: 100 VAC to 240 VAC Power Line Frequency Range: 50 - 60 Hz Temperature Operating Range: +15°C to +35°C Relative Humidity Operating Limit: 90% Guaranteed Operating Elevation: 6000 Ft. (1800m)

STIMULUS: External Stimulus Input

(Phone Jack) Peak Voltage: 3 VAC Input Impedance: 15,000 Ohms

PRESENT: External Present Control Input that turns the stimulus signal ON

and OFF (Phone Jack).

Voltage Range: STIM OFF: +5.0 VDC

STIM ON: 0.0 v

Input Impedance: 11,000 Ohms

Contra PHONE: Output Voltage: 7 VAC

Output Impedance: 2.5 Ohms

Standard 9-pin RS232C serial port for interfacing with outside computer.

RXD CTS

TXD

RTS

Standard VGA port for external monitor.

2 - 7GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Standard PS-2 keyboard port for external Keyboard.

Standard parallel printer port for external printer.

Electrical

The following apply to the TympStar system:

1) Class 1 Medical Equipment

2) Type B Medical Equipment

3) IPXO ingress of water (ordinary equipment)

4) Equipment not suitable for use in the presence of flammable anesthetic mixture with air or with oxygen or nitrous oxide.

5) Mode of operation - continuous

Input Voltage: 100  240 VAC Input Frequency: 50  60 Hz Input Current: 3.2 A maximum Power Consumption: 120W maximum

Grason-Stadler2 - 8

Specifications

Supplied Accessories

Contra insert phone GSI Part # 8000-0078 Calibration cavity (V1) GSI Part # 2000-1036 Probe cleaning kit (2 boxes) GSI Part # 2000-9610 Eartips:

1 pkg. 8 standard sizes, 4 ea. (Color coded) GSI Part # 1700-9660 1 pkg. 6 special sizes, 2 ea. GSI Part # 1700-9670

1 pkg. 6 screening sizes, 2 ea. GSI Part # 1700-9622 Reference Instruction Manual GSI Part # 2000-0100 Quick User Guide GSI Part # 2000-0108 Printer paper (2 rolls) for orders including printer GSI Part # 1700-9619 Spare set of probe tubing GSI Part # 2000-9617 Probe mount - shoulder GSI Part # 1700-9646 Probe mount - wrist GSI Part # 1700-9642 Probe mount - clothes GSI Part # 1700-9608 Printer paper, adhesive-backed

for orders including a printer GSI Part # 1770-9643 GSI TympStar dustcover GSI Part # 1700-9618 Power cord with hospital-grade plug GSI Part # 4204-0251

(USA)

Power cord part # varies depending on location

Mechanical

Materials of manufacture

DIMENSIONS AND WEIGHT W x D x H: 20.38 inches x 15 inches x 12.6 inches (LCD raised)

52cm x 38cm x 32cm

Height with LCD lowered - 6 inches (15cm) Weight: 16.58 pounds, 7.53 kg Shipping weight: 29.50 pounds, 13.38 kg

Top Case, LCD Housing Front & Rear & Hinges: Lexan 500 w/10% Glass & 2% Blowing Agent,

UL 94V0 Rated LCD Lense: GE HP40S -OR- Duralan II Switches: Shincor Shin-Etsu/Novacor KE-951 U Labels: Lexan & Polycarbonate Softkey Panel: Mylar Probe Cord: Polyvinyl Chloride (PVC) Probe Top & Bottom Housings: Cycolac KJW, UL 94V0 Rated Probe Tip: Polypropolene Eartips: Kraton 3226 Tubing: Vinyl and Polyurethane

Calibration requirements

GSI recommends quarterly calibration checks for the GSI TympStar along with annual certification. ASHA requires quarterly electro-acoustic calibration checks and annual electro-acoustic calibration. It is good practice to perform daily biologic checks. See Chapter 4: Calibration for complete calibration instructions.

2 - 9GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Version 2 Specifications

Standards

The GSI TympStar Version 2 meets or exceeds the following standards and specifications for aural acoustic admittance instruments: IEC 1027 1991-03 ANSI S3.39-1987 ANSI S3.6-1996 ANSI S3.7-1995 IEC 645-1 1992 IEC 126-1973 (also BS 6111-1981) BS ISO 389-2- 1994

Y2K Compliant UL 2601-1 Part 1: General Requirements for Safety CSA C22.2 No. 601.1-M90 (Canada)

EN60601-1:1990 Safety Requirements for Medical Electrical Equipment EN60601-1-2 Medical Electrical Equipment Emissions and Immunity Requirements

This equipment has been tested for radio frequency emissions and has been verified to meet Radiated and Conducted Emissions per EN 55011-1998, Group 1, Class A and per CISPR, Class A.

Grason-Stadler2 - 10

Specifications

Sensitivity ranges

The following admittance measurements give maximum range at standard probe tone frequencies. Compliance Y, 226 Hz is measured in ml. All other units are in mmhos. (1 acoustic mmho = 10-8 m3) /Pa.s)

Table 1: Tymp Mode (Y, B, G)

Frequency Digital Read-Out Graphical

Including Cursor Display

226 Hz -7.0 to +7.0 -1.0 to +7.0

678 Hz -21 to + 21 -5.0 to +25

1000 Hz -30 to +30 -5.0 to +30

Accuracy:

226Hz: 0.1 ml or 5%, whichever is greater. Above 226Hz: (F/226) x 0.1 mmho or K% whichever is greater.

K FACTOR: From 250 to 1500 Hz = 5%

Above 1500 Hz =10%

Table 2: Reflex Mode (Y, B, G)

Frequency Digital Read-Out Graphical

Including Cursor Display

226 Hz -7.0 to +7.0 -0.16 to +0.80

+0.16 to -0.80

678 Hz -21 to + 21 -0.48 to +0.80

+0.48 to -0.80

1000 Hz -30 to +30 -0.64 to +0.80

+ 0.64 to -0.80

Accuracy: 226 Hz is 0.02 ml or 5%,whichever is greater.

2 - 11GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Temporal Latency in ARLT Mode

Multi Frequency

Probe Signal (Sinusoidal)

Initial Latency Li: < 5 ± 5 msec.

(From signal onset to 10% of Amplitude)

Terminal Latency Lt: < 5 ± 5 msec

(From signal offset to 90% of Amplitude)

Rise Time Tr: <30 ±5 msec.

(From 10% to 90% of Amplitude)

Fall Time Tt: <25 ±5 msec.

(From 90% to 10% of Amplitude)

Resonant Frequency Measurement Accuracy: 50 Hz or 5%,

Whichever Is Greater

NOTE Resonant frequency is defined as the frequency at which Delta B  is zero (B is measured at + 200 daPa and at Peak Pressure).

Frequencies:

Discrete: 226 Hz, 678 Hz, 1000 Hz

Multi Freq: From 250 Hz to 2000 Hz Multi Frequency Increment:50 Hz Frequency Accuracy:

Discrete and Sweep ±1%

From 250 to 1000 Hz ±1%

Above 1000 Hz ±2% Harmonic Distortion: <2%

(Measured in an HA-1 2cc Coupler) Signal Level (In Real Ear and In Normal Test mode):

226 Hz: 85 dB SPL

678 Hz: 80 dB SPL

1000 Hz: 75 dB SPL

NOTE All Probe Tone levels at all frequencies are set to be nominally 70 dB HL.

Signal Level Accuracy: 226 Hz: ±1.5 dB SPL Other Frequencies: ±3.0 dB SPL

Grason-Stadler2 - 12

Specifications

Pneumatic System

Acoustic Reflex Activating (Stimulus) Signal

Pressure Maximum Limits: -800 daPa to +600 daPa Programmed Pressure Ranges:

Normal: + 200 to - 400 daPa Wide: + 400 to - 600 daPa

Pressure Accuracy: ±10% or ±10 daPa, Whichever is greater in cavities

from 0.5 cc to 5.0 cc.

Pressure Sweep Rate: 12.5 daPa/sec

50 daPa/sec 600/200 daPa/sec

200 daPa/sec Manual Sweep Rate Limit: 600 daPa/sec Sweep Rate Accuracy: ±10% Pressure System Leak Rate: < 1. 0 daPa/sec

(Measured at -600 and +400 daPa, while pressure servo is disabled.)

Pure Tone Stimulus

Frequencies for Contra phone and for Ipsi phone with time multiplexed stimulus. See Table 3.

Frequency Accuracy: ±1% Total Harmonic Distortion (Acoustically): <2%

(Measured 5 dB HL below guaranteed maximum HL)

Noise Stimulus

The uniformity of the spectrum level of acoustic pressure for the noise signal over 20 averages measured acoustically within their respective band limits will be:

±10 dB for insert or probe type earphones ±5 dB for supra-aural type earphones

Noise Band Widths:

Low Band: 125 -1600 Hz High Band: 1600 - 4000 Hz Broad Band: 125 - 4000 Hz (Relative to level at 1 kHz) Band-edges accurate to within ±15%

Roll off rate: >12 dB/Octave

2 - 13GSI TympStar Version 1 and Version 2 Service Manual

Ipsi Pulsed

Contra Pulsed

Contra Steady

Probe Tone

226 Hz 678 Hz 1000 Hz 226 Hz 678 Hz 1000 Hz 226 Hz 678 Hz 1000 Hz

Chapter 2

Intensity levels are reduced as a function of volume at a rate of 1 dB SPL for each .1 ml. Intensity reduction begins at 1.2 ml.

Table 3A: Upper limit of HL range in Reflex Threshold Mode

Pure Tone Stimulus (Hz) Noise Stimulus Other Stimulus

250

95 95 95 110 110 110 n/a 110 110

500

110 110 110 120 120 120 120 n/a 120

1000

110 110 110 120 120 120 120 120 n/a

2000

105 105 105 120 120 120 120 120 120

4000

100 100 100 115 115 115 115 115 115

LBN

95 95 95 115 115 115 115 115 115

HBN

95 95 95 115 115 115 115 115 115

BBN

95 95 95 115 115 115 115 115 115

Click (SPL)

110 110 110 120 120 120 120 120 120

EXT (SPL)

110 110 110 120 120 120 120 120 120

Lower limit of HL range for all stimulus signals (35 dB HL). Hearing Level Increment: 1.0, 2.0, 5.0 dB Hearing Level Increment Accuracy: ±0.5 dB Hearing Level Control Linearity: ±1.0 dB

Contra

Ipsi

Table 3B: Upper limit of HL range in ARLT and Reflex Decay Modes

Stimulus Selections (Hz) Noise Stimulus Other Stimulus

Probe Tone

226Hz 678Hz 226Hz 678Hz

Limits apply for Reflex Decay and ARLT modes.

Limits apply for Reflex Decay only. ARLT not available at 678 Hz.

Limits apply for Reflex Decay only. ARLT limit is 105 dB.

250

n/a

110

n/a

500

120 n/a 105 n/a

1000

120 120 110 110

2000

120 120

105 100

4000

115 115 100 100

LBN

115 115 n/a n/a

HBN

115 115 n/a n/a

BBN

115 115 n/a n/a

Click (SPL)

120 120 n/a n/a

EXT (SPL)

120 120 110 110

Grason-Stadler2 - 14

Specifications

TABLE 4: UPPER HL LIMIT IN ACOUSTIC REFLEX

SENSITIZATION MODE

Cf Versus l

Ipsi Actuator Cf (Contra facilitator)

(Hz) (HL) 500Hz 1000 2000 4000 6000 BBN EXT(SPL)

(dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbSPL) 500 105 --- 120 120 115 115 115 120 1000 110 120 --- 120 115 115 115 120 2000 105 120 120 --- 115 115 115 120 4000 100 120 120 120 --- 115 115 120 EXT 101 120 120 120 115 115 115 120

Cf Versus C

Contra Actuator Ct (Contra facilitator)

(Hz) (HL) 500Hz 1000 2000 4000 6000 BBN EXT(SPL)

(dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbSPL) 500 120 --- 120 120 115 115 115 120 1000 120 120 --- 120 115 115 115 120 2000 120 120 120 --- 115 115 115 120 4000 115 120 120 120 --- 115 115 120 BBN 115 120 120 120 115 115 115 120 EXT 120 120 120 120 115 115 115 120

Cf Versus C

Contra Actuator If (Ipsi facilitator)

(Hz) (HL) 500Hz 1000 2000 4000 6000 EXT(SPL)

(dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbSPL) 500 120 --- 110 105 100 90 110 1000 120 105 --- 105 100 90 110 2000 120 105 110 --- 100 90 110 4000 115 105 110 105 --- 90 110 BBN 115 105 110 105 100 90 110 EXT 120 105 110 105 100 90 110

If Versus l

Ipsi Actuator If (Ipsi facilitator)

(Hz) (HL) 500Hz 1000 2000 4000 6000 EXT(SPL)

(dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbSPL) 500 105 --- 110 105 100 90 110 1000 110 105 --- 105 100 90 110 2000 105 105 110 --- 100 90 110 4000 100 105 110 105 --- 90 110 EXT 110 105 110 105 100 90 110

2 - 15GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Click Stimulus

Guaranteed Peak Equivalent SPL Levels:

Ipsi: 110 dB SPL Contra: 120 dB SPL

Peak hold SPL to peak equivalent SPL transfer data.

(Peak hold SPL = peak equivalent SPL + transfer data) Ipsi: 8.5 dB Contra: 5.5 dB ClickRate Range: 50-300 Pulse/sec.

Click rate accuracy: ±1pulse/sec. Pulse Width (Electrically Measured): 100 msec. Pulse Rise/Fall Time (Electrically): 5.0 msec. Frequency Spectrum:

Ipsi: 50 - 4000 Hz

Contra: 50 - 3600 Hz

NOTE Frequency spectrum uniformity better than: 10 dB

External Input: At 0.5 VRMS:

1 KHz Upper Limits:

Ipsi: 110 dB SPL

Contra: 120 dB SPL

Stimulus Presentation Control

Signal ON/OFF Ratio: >70 dB

OFF mode signal level: <20 dB SPL

Signal To Noise Ratio: >70 dBA

Measured with disabled probe signal and A weighting for noise measurement. Residual noise: <25 dBA SPL

(Stimulus Present switch in OFF position) Unwanted Acoustic Probe Signals: <60 dBA

Signal separation between Ipsi and Contra channels; all frequencies: >70 dB

(Measured at the probes with the ON channel set to 90 dB) Leaked signal: <20 dB SPL

The radiated acoustic noise from the instrument (with reflex stim off) when measured at 1 meter from the instrument, shall be: <50 dBA (A weighting and SLOW averaging)

Grason-Stadler2 - 16

Specifications

Temporal Specifications Of Stimulus Presentation

Steady State Stimulus

Initial Delay (elapsed time from present bar activation to 10% stimulus amplitude): < 100 msec

Terminal Delay (elapsed time from present bar deactivation to 90% stimulus amplitude): <100 msec

Rise time: 7.5 ± 2.5 msec Fall time: 7.5 ± 2.5 msec

NOTE Initial and terminal delays do not effect temporal measurement of ARLT test (software compensates for them).

Multiplexed Stimulus (Used in Reflex Threshold test mode)

Period data for frequencies: 250 and 500 Hz:

Period 124 msec Stimulus on time 44 msec Stimulus off time 62 msec Rise and fall time 18 msec

Environmental

Warm-Up Time

Period data for all other frequencies:

Period 115 msec Stimulus on time 44 msec Stimulus off time 53 msec Rise and fall time 18 msec

Temporal Spec. Accuracy: ±10% or 5 msec, whichever is greater

The GSI TympStar Version 2 meets ANSI S3.6-1996 (Rl986) Standards for temperature and humidity specifications, and it meets the UL 2601 Standards in terms of shock hazards and leakage.

Temperature:

Storage: -40 degrees C to +75 degrees C Operating: +15 degrees C to +35 degrees C

Humidity: 90% at 35 degrees C (non-condensing)

At room temperature; +15°C to +35°C: 10 Minutes At room temperature; below +15°C: 1 Hour

2 - 17GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Calibration Stability

Connectors

All GSI TympStar Version 2 specifications are met over the range of specified power line, temperature and humidity variations.

Power Line:

Voltage Variation: ±10%

Frequency Variation: ± 5% Power line short term variation which affects the performance of the instrument will turn off all probe and stimulus signals.

STIMULUS: External Stimulus Input

(Phone Jack) Peak Voltage: 3 VAC Input Impedance: 15,000 Ohms

PRESENT: External Present Control Input that turns the stimulus signal ON

and OFF (Phone Jack).

Voltage Range: STIM OFF: +5.0 VDC

STIM ON: 0.0 v

Input Impedance: 11,000 Ohms

Contra PHONE: Output Voltage: 7 VAC

Output Impedance: 2.5 Ohms

Standard 9-pin RS232C serial port for interfacing with outside computer.

RXD CTS

TXD

RTS

Standard VGA port for external monitor.

Grason-Stadler2 - 18

Specifications

Standard PS-2 keyboard port for external Keyboard.

Standard parallel printer port for external printer.

Electrical

The following apply to the TympStar system:

1) Class 1 Medical Equipment

2) Type B Medical Equipment

3) IPXO ingress of water (ordinary equipment)

4) Equipment not suitable for use in the presence of flammable anesthetic mixture with air or with oxygen or nitrous oxide.

5) Mode of operation - continuous

Input Voltage: 100  240 VAC Input Frequency: 50  60 Hz Input Current: 3.2 A maximum Power Consumption: 120W maximum

2 - 19GSI TympStar Version 1 and Version 2 Service Manual

Chapter 2

Supplied Accessories

Contra insert phone GSI Part # 8000-0078 Calibration cavity (V2) GSI Part # 2000-1035 Probe cleaning wire (2 boxes) GSI Part # 2000-9610 Eartips:

1 pkg. 8 standard sizes, 4 ea. (Color coded) GSI Part # 1700-9660 1 pkg. 6 special sizes, 2 ea. GSI Part # 1700-9670

1 pkg. 6 screening sizes, 2 ea. GSI Part # 1700-9622 Reference Instruction Manual GSI Part # 2000-0120 Quick User Guide GSI Part # 2000-0126 Printer paper (2 rolls) for orders including printer GSI Part # 1738-9619 Spare set of probe tubing GSI Part # 2000-9617 Probe mount - shoulder GSI Part # 1700-9646 Probe mount - wrist GSI Part # 1700-9642 Probe mount - clothes GSI Part # 1700-9608 Printer paper, adhesive-backed

for orders including a printer GSI Part # 1770-9643 GSI TympStar dustcover GSI Part # 1700-9618 Power cord with hospital-grade plug GSI Part # 4204-0251

(USA)

Power cord part # varies depending on location

Mechanical

Materials of manufacture

DIMENSIONS AND WEIGHT W x D x H: 20.38 inches x 15 inches x 12.6 inches (LCD raised)

52cm x 38cm x 32cm

Height with LCD lowered - 6 inches (15cm) Weight: 16.58 pounds, 7.53 kg Shipping weight: 29.50 pounds, 13.38 kg

Top Case, LCD Housing Front & Rear & Hinges: Lexan 500 w/10% Glass & 2% Blowing Agent,

Calibration requirements

Grason-Stadler2 - 20

Operation summary

This chapter summarizes the operation of the TympStar Verrsion 1 and TympStar Version 2 Middle-ear Analyzers. A brief introduction to the TympStar controls, menus and LCD screens will be followed by summarized test procedures for each instrument. Please refer to the Reference Instruction Manuals for more detailed operating instructions.

NOTE Most generic LCD screen and menu examples use TympStar Version 2 images. However, the concepts and processes described apply equally well to both instruments.

Front panel controls

Front panel controls consist of a combination of hardkeys with fixed functions that do not change, and softkeys located under the LCD that change to support the changing requirements of a test session. A rotary pressure control is provided to change or fine-tune pressure within the ear canal.

LCD housing

Softkey

Front panel

Pressure control

Hardkey

3 - 1GSI TympStar Version 1 and Version 2 Service Manual

Chapter 3

Hardkeys

Tymp

Reflex

Etf

All of the push-button controls on the front panel are hardkeys. Three hardkeys are also located on the left and right sides of the LCD housing. Their functions are printed directly on the push-button or nearby on the panel and do not change. The front panel hardkey functions include:

Causes GSI (or operator programmed) default criteria for diagnostic tymp test to be automatically set up.

Causes GSI (or operator programmed) default criteria for reflex threshold testing to be automatically set up.

Causes GSI (or operator programmed) default criteria for eustachian tube function (intact eardrum) test to be automatically set up.

Special

Page

Remote

Data Transfer

Pressure control

Manual

Hold

Causes GSI TympStar to initialize to GSI (or operator programmed) default criteria for reflex decay test.

Allows operator to recall and display tests in memory or in progress.

Allows operator to print selected test results.

Used when GSI TympStar is interfaced with external computer. Implements a common handshake routine to ensure that the RS232 link is in place.

Used to send test data to an external computer.

Rotary knob used to manually change or fine-tune the pressure within the ear canal.

Allows the user to run each applicable test procedure manually. The pressure control is used to change pressure manually within the ear canal.

Allows the current test sequence to be temporarily halted without venting the ear canal pressure.

Stop

3 - 2

Allows the current test sequence to be terminated. The ear canal is vented. Data on the current page is stored in memory.

Grason-Stadler

Operation Summary

Start

Stimulus

Intensity

Present

LCD hardkeys

Clear

Erase

Return

Causes the selected test sequence to begin in the direction indicated by the associated arrow.

Allows available stimuli to be scrolled up or down and selected. This feature is available only for Reflex type tests.

Allows operator to select and set desired intensity (dB HL). This feature is available only for Reflex type tests.

Allows selected stimulus to be presented either manually or according to preset automatic timing. This feature is available only for Reflex type tests.

Three hardkeys are also located on the left and right sides of the LCD housing. Their functions are printed directly on the push-button and do not change. The LCD housing hardkey functions include:

Deletes selected tests stored in memory.

Erases current display of test results prior to placing test results in memory.

Allows the operator to go back to the next higher level in the softkey menu. Depressing Return while in Clear, Page, or Print mode restores the instrument to the mode previously selected.

Softkeys

The push-buttons located directly under the LCD are the only softkeys. Their functions are displayed on the LCD and change in support of the current test activities.

Test parameters

Test parameter softkeys

GSI TympStar Version 1 and Version 2 Service Manual

3 - 3

Chapter 3

Menus and LCD screens

Hardkeys are located on the front panel and the sides of the LCD panel and provide fixed functions that do not change, such as selection of test type. Softkeys located directly under the LCD change to support the requirements of each test session.

Test parameters

Menus

Test parameter softkeys

Selecting a test mode by pressing a hardkey causes the required test screen to be displayed with the appropriate menu of test parameters shown across the bottom of the LCD. The softkeys are then used in conjunction with a few hardkeys to navigate through menus and set parameter values for the selected tests. For example, pressing the TYMP hardkey causes the Tymp Diagnostic screen to be displayed.

GSI-developed default parameters for each selected test are displayed on the lower portion of the LCD above the six softkeys. Alternative choices may be made by pressing the appropriate test parameter softkey.

Pressing a test parameter softkey causes a new menu of choices to be presented across the bottom of the screen for that function. The menu structure for the TympStar Version 2 Tymp diagnostic functions is diagrammed on the next page as an example.

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Grason-Stadler

Operation Summary

AUTO

SEQUENCE

226 678 1000

P-RATE

daPa/s

12.5 50 200 600/200

GSI default

parameter

Program modes

PROBE

-600 -400 -200 +200 +400 MORE

-500 -300 0 +300 MORE

ADMITTANCE

Y B G B/G ml mmho mmho mmho

START

daPa

The MORE softkey is used to toggle between the top and lower levels of menus while the test screen portion above the softkeys remains unchanged.

NOTE The GSI default parameters are circled on the menu structure diagrams.

All test modes allow the user to individually program a unique set of default test parameters. User-programmed parameters override GSI-developed default parameters.

P-RANGE

daPa

NORMAL WIDE

BASELINE

ON OFF TYMP WIDTH RATIO

GRADIENT

daPa ml

EAR

RIGHT LEFT

OFF

CURSOR

OFF TYMP 1 TYMP 2 TYMP 3 SET PEAK SET PEAK SET PEAK

Version 1 probe tone frequencies

Version 2 probe tone frequencies

Version 1 LCD graphic traces

Version 2 LCD graphic traces

The TympStar Version 1 measures compliance using a 226 Hz probe tone.

The following probe tone frequencies are available:

 226 Hz - All Tests  678 Hz - Tymp Diagnostic, Reflex Threshold, Reflex Decay, ETF  1000 Hz - Tymp Diagnostic, Reflex Threshold, ETF  250 Hz - 2000 Hz Sweep - Multiple Frequency Tympanometry

The TympStar Version 1 measures compliance, and shows the tracing on the graphic display as a solid line.

The TympStar Version 2 measures admittance (Y), and its components: Susceptance (B) and Conductance (G). Admittance (Y) and Susceptance (B) tracings are solid lines, while tracings of conductance (G) values are dotted lines.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

Probe lights

LCD screen

Lights are provided on the probe to indicate test status in the following manner:

 Solid Green = Test In Progress  Solid Amber = Occlusion  Blinking Amber = Leak  Blinking Green = OK to begin a test

Probe lights

The liquid crystal display (LCD) shows axes for the graphic display of the selected test, and pressure and compliance or admittance meters.

3 - 6

THE TEST STATUS line to the right of the graphics area of screen displays alert messages, invalid selections, and other messages to user.

Test Status Line

Test tracings, meter displays with digital readouts, and ear canal volume are recorded in real time.

Grason-Stadler

Operation Summary

Erasing and clearing test data

CLEAR hardkey

ERASE hardkey

The display of current test data may be erased prior to stopping a test or continuing to the next test by pressing the ERASE hardkey. Previous test data can be selectively cleared from the instruments storage by selecting the desired test with the PAGE hardkey, then pressing the CLEAR hardkey

PAGE hardkey

PRINT hardkey

It is suggested that all testing be completed on one ear before proceeding to the other ear. Changing the test ear causes a new page of test data to be generated.

Version 2 External reflex test stimuli

External reflex test stimuli

Paging test data

Reflex test stimuli may be input from an external source and presented via external control. The connections for these external inputs are provided on the rear panel of the Version 2 instrument. These jacks are unused in the TympStar Version 1.

input

External present control

input

Up to 26 test screens can be stored in memory as pages. These pages of data can be recalled with appropriate titles and labels for viewing by pressing the PAGE hardkey, then scrolling through pages using up/down arrows. Each screen of data equals a page.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

Version 2 cursor

A cursor is available in the TympStar Version 2 on all test data pages for scrolling left or right on the graphics area and can be used to set or reset tymp peak values for tests. A cursor box describes the numeric position of the cursor on both the X and Y axes. Cursors are not available in the Version 1.

Cursor Cursor box

NOTE The cursor must be used to set tymp values when testing at anything other than 226Hz, Y in the Version 2.

Printing tests

Preparing an external printer

Up to 26 test screens stored in memory can be printed by selecting PAGE-ALL followed by PRINT. Individual test results can be printed by selecting PAGE and then using the arrow key to display the test. To begin printing, press the PRINT hardkey.

The TympStar supports the full line of Hewlett Packard DeskJet® and LaserJet printers. These printers provide full sheet printouts of test data. A test printout of results containing:

 One left and right tympanogram graph  A reflex threshold table for both left and right (Ipsi or Contra only)  A reflex decay table for both left and right (Ipsi or Contra only)

will print on one 8.5 x 11 inch sheet of paper.

1) Turn the TympStar and printer off, then attach the printer data cable to the

printer connector on the rear of the TympStar. Connect the printer power cable to AC power.

WARNING ANY EQUIPMENT CONNECTED TO THE GSI TYMPSTAR AND USED IN THE PATIENT VICINITY MUST BE POWERED BY AN ISOLATED POWER SOURCE TO MAINTAIN THE ELECTRICAL SAFETY OF THE OVERALL SYSTEM. The isolated power source can be purchased directly from GSI, or elsewhere when approved for use by GSI.

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Grason-Stadler

Operation Summary

2) Turn the TympStar and printer on. Anytime the external printer is connected and turned on, the TympStar will automatically direct printing to the external printer. To redirect printing to the internal printer, turn the external printer off or disconnect it.

Setting the printer parameters

To set the external printer parameters:

1) Press the ETF hardkey to select the ETF test mode, then press the RETURN hardkey to display the ETF sub-menu.

2) Press the INSTRUMENT OPTIONS

INTACT

PERF

INSTRUMENT

OPTIONS

PROGRAM

MODE

softkey, then the MORE softkey to display the PRINT FORMAT softkey selection.

3) Press the PRINT FORMAT softkey, and then the MORE softkey to display the EXTERNAL PRINTER SETUP softkey selection.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

4) Press the EXTERNAL PRINTER SETUP softkey to display the External Printer Setup Menu.

Left column printout data

Color or black and white

5) Press the LEFT COLUMN SETTING softkey of the External Printer Setup Menu to set the left column of the printed data to the left or right ear.

6) Press the PRINT TYPE softkey of the External Printer Setup Menu to set the printout to Black and White or Color.

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NOTE The setting must be Black and White for grayscale printers.

Grason-Stadler

Operation Summary

Changing Instrument Versions

Changing from a Version 2 to a Version 1

The Version function provides an easy way for a TympStar Version 2 to be changed to a Version 1 instrument either temporarily or permanently. Version 1 functionality is a limited subset of Version 2 functionality and does not include 678 and 1000 Hz probe tones, multi-frequency tympanometry or ARLT testing.

To change from a TympStar Version 2 to a Version 1:

1) Press the ETF hardkey to select the ETF test mode, then press the RETURN hardkey to display the ETF submenu.

INTACT

PERF

INSTRUMENT

OPTIONS

PROGRAM

MODE

2) Press the INSTRUMENT OPTIONS softkey, then the MORE softkey to display the VERSION softkey selection.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

3) Press the VERSION softkey to display the Version Menu.

NOTE To return to the Instrument Options menu with no version switching action taken, press the RETURN hardkey from the Version menu.

Switching to V1 temporarily

Switching back to V2

Switching to V1 permanently

1) Press the V1 TEMPORARY softkey to change the instrument to V1 functionality temporarily. The message: SWITCHING TO A V1 INSTRUMENT. WAITING FOR WARMSTART will appear. The system will then reboot and reinitialize as a TympStar Version 1.

The V1 Temporary mode allows the instrument to be switched back to V2 mode. The instrument will stay in V1 Temporary mode indefinitely, until changed back to V2 mode as described below.

1) Press the V2 softkey in the Version Menu. Lock and key codes are displayed on the screen.

NOTE Press the CONTINUE softkey from this screen to keep the TympStar in the V1 Temporary mode.

2) Press the DATA TRANSFER hardkey. The message: SWITCHING TO A V2 INSTRUMENT. WAITING FOR WARMSTART will appear. The system will then reboots and reinitialize as a TympStar Version 2.

1) Press the V1 PERMANENT softkey in the Version Menu to change the instrument to V1 functionality permanently. The message: ARE YOU SURE YOU WANT TO CHANGE THIS TO A V1 INSTRUMENT? will appear.

3 - 12

CAUTION Once an instrument is changed to V1 permanently it cannot be changed back to V2 without a license key from Grason-Stadler.

Grason-Stadler

Operation Summary

2) Press the YES softkey to switch the TympStar to a V1 instrument permanently. The message: SWITCHING TO A V1 INSTRUMENT. WAITING FOR WARMSTART will appear. The system will then reboot and reinitialize as a TympStar Version 1.

Changing from a Version 1 to a Version 2

The Version function provides an easy way for a TympStar Version 1 to be upgraded to a Version 2 instrument. Version 2 functionality provides expanded testing capability and includes 678 and 1000 Hz probe tones, multifrequency tympanometry and ARLT testing. A license code must be obtained from Grason-Stadler. to upgrade a TympStar Version 1 to a Version 2.

To change from a TympStar Version 1 to a Version 2:

1) Press the ETF hardkey to select the ETF test mode, then press the RETURN hardkey to display the ETF sub-menu.

2) Press the INSTRUMENT OPTIONS

INTACT

PERF

INSTRUMENT

OPTIONS

PROGRAM

MODE

softkey, then the MORE softkey to display the VERSION softkey selection.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

3) Press the VERSION softkey to display the Version Menu.

Obtaining a License Code

NOTE To return to the Instrument Options menu with no version switching action taken, press the RETURN hardkey from the Version menu.

4) Press the V2 softkey. The following messages will appear: YOU MUST OBTAIN A LICENSE KEY TO LAUNCH V2 TYMPSTAR CONTACT YOUR GSI REPRESENTATIVE WITH THE FOLLOWING

CODE:

0A2B3C4E5D (example of lock code)

YOUR GSI REPRESENTATIVE WILL PROVIDE YOU WITH A LICENSE KEY CODE.

ENTER THE LICENSE KEY CODE HERE:

THEN PRESS THE DATA TRANSFER KEY

5) Press the PRINT hardkey to print out the lock code. Contact your GSI representative with the lock code. If a V2 upgrade is purchased, you will be provided with a license key code and V2 probe. Once you have received the V2

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Grason-Stadler

Operation Summary

license key and probe, follow the instructions below to change the TympStar to V2 functionality.

NOTE Press the CONTINUE softkey from this screen to keep the TympStar in V1 mode.

Replacing the V1 Probe with a V2 Probe

To replace the TympStar probe:

WARNING Turn off power to the TympStar.

1) Disconnect the air tubing to the brass fitting on the side of the TympStar.

2) Remove the cable clamp on the side of the TympStar

3) Remove the two retaining screws that secure the probe connector to the TympStar.

4) Pull the connector straight out and away from the side of the TympStar chassis.

Reverse this sequence to connect the new Version 2 probe to the TympStar. Contact your GSI representative to have the removed probe returned to GSI.

5) Connect an external keyboard, power the instrument and return to the VERSION sceen.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

Switching to Version 2 software

1) Press the V2 softkey from the Version menu. The following messages will appear:

YOU MUST OBTAIN A LICENSE KEY TO LAUNCH V2 TYMPSTAR CONTACT YOUR GSI REPRESENTATIVE WITH THE FOLLOWING CODE: 0A2B3C4E5D (example of lock code)

YOUR GSI REPRESENTATIVE WILL PROVIDE YOU WITH A LICENSE KEY CODE. ENTER THE LICENSE KEY CODE HERE: THEN PRESS THE DATA TRANSFER KEY

Using an external keyboard, type in the license key code as indicated by the on-screen instructions. Press the DATA TRANSFER hardkey. The message: SWITCHING TO A V2 INSTRUMENT. WAITING FOR WARMSTART will appear. The system will then reboot and reinitialize as a V2 TympStar.

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Grason-Stadler

Operation Summary

Version 1 test procedures

The following TympStar Version 1 test procedures are summarized. Comprehensive procedures are provided in the TympStar Version 1 Reference Instruction Manual.

Tymp diagnostic

Manual Tymp

1) Select test mode by turning POWER ON, or by pressing TYMP hardkey. Default test parameters are displayed above softkeys on the LCD.

2) Attach the probe box to the velcro strip on the shoulder probe mount.

3) Position the shoulder probe mount on the patient.

4) Position the appropriate size eartip on the probe tip and securely insert into the ear canal.

5) Press EAR softkey, then select LEFT or RIGHT ear.

6) Press START hardkey to initiate test.

7) View ongoing test results on the graphic display area, and on the pressure and compliance meters.

8) Press the STOP hardkey to end the test, store the results in memory, and display the summary data on the screen.

NOTE A MANUAL TYMP test may be initiated by pressing the MANUAL hardkey. Rotate the PRESSURE KNOB to vary pressure and view ongoing test results graphically, or on the pressure and compliance meters.

1) Securely insert the probe tip within the patients ear canal and press the TYMP hardkey.

2) Press the EAR softkey and select the right or left ear.

3) Press the MANUAL hardkey to pressurize the ear canal to the previously selected start pressure. Manual mode will appear below the Name, ID and Tester Information on the display.

4) Use the PRESSURE CONTROL knob to vary the pressure within the ear canal and control the speed of the tympanometric test.

5) View test results on the display along with the pressure and compliance meters. Test summary information is displayed to the right of the meters for the two most recent pressure sweeps.

NOTE The ERASE hardkey can be used to delete test data prior to pressing the STOP hardkey.

6) Press the STOP hardkey to store the last two tracings in memory.

7) Press the PAGE hardkey to view test results.

8) Press the PRINT hardkey while in the PAGE mode for printed tests. MANUAL will appear on the printout indicating a manual test.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

Tymp screening

1) Enter test mode by pressing TYMP followed by RETURN. Press the SCREEN softkey. Test will automatically start once a seal is detected.

2) Default test parameters are displayed above softkeys on the LCD.

3) Attach the probe box to the velcro strip on the shoulder probe mount or to the wristband probe mount.

4) Press the EAR softkey, then press LEFT or RIGHT ear.

5) Position the appropriate size SCREENING eartip on probe tip.

6) With the hand-held probe, obtain a seal at entrance to ear canal.

Probe lights indicate the following:

Solid Green = Test In Progress Solid Amber = Occlusion Blinking Amber = Leak Blinking Green = OK To Begin A Test

7) Test will start automatically if ear canal seal is good. Screening IPSI Reflex test at 1 kHz will follow tymp.

8) A Test Complete Remove Probe message will appear on the display when the test is complete.

9) View test results on the graphic display area along with summary data at the right of the pressure and compliance meters.

Reflex threshold

Automatic Auto Zero

1) Select test mode by pressing the REFLEX hardkey. Default test parameters are displayed above softkeys on the LCD.

NOTE AUTO ZERO is used to baseline compliance.

2) Press the START hardkey to pressurize the ear to dynamic peak pressure maintained from the last Tymp, or to 0 daPa if no previous Tymp data is available. Pressure control is active for fine-tuning pressure if Tymp is sharply sloped.

3) Select intensity of stimulus by pressing the INTENSITY up and down arrow hardkeys.

4) Present auto-timed stimulus by momentarily pressing the PRESENT bar.

5) Press the ERASE hardkey to erase sub-threshold presentations or unwanted data (i.e. amplitudes of less than 0.02).

6) Press the CONTINUE softkey to allow reflex tracings to continue on next line of reflex screen and onto the next page in memory.

7) Use the STIMULUS up and down arrow hardkeys to select alternative test stimuli.

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Grason-Stadler

Operation Summary

Before pressing START, select the AUTO ZERO softkey followed by the AUTOMATIC softkey to activate this feature. The Admittance meter will automatically be zeroed each time the PRESENT bar is pressed.

The Admittance meter may be zeroed manually after pressing START by pressing the AUTO ZERO softkey as frequently as needed.

Mark Threshold

Reflex Threshold Seeking

Often multiple tracings are obtained per stimulus presentation, but only one represents the reflex threshold. Mark Threshold allows the operator to scroll across each line of data and select the intensity value determined to be the threshold.

1) Select the MARK THRESHOLD softkey.

2) Select the softkey to move the cursor.

3) Press the MARK LINE 1 or MARK LINE 2 softkey to display the threshold marker (an asterisk).

4) Press the NR LINE 1 or NR LINE 2 softkey to display no response (NR).

5) Select EXIT softkey to return to the reflex threshold diagnostic menu.

Threshold Seek automates the sequence of button presses used to arrive at reflex threshold values and also automates the marking of reflex threshold values.

NOTE Threshold Seek should only be used with quiet, cooperative patients.

1) Select test mode by depressing REFLEX. Default test parameters are displayed above softkeys on the LCD.

2) Press the THRESHOLD SEEK softkey.

3) Press ON or CONFIGURE to change test parameters.

4) Press START to pressure ear to dynamic peak pressure maintained from last tymp, or to 0 daPa if no previous tymp data is available.

5) Present auto timed stimulus by momentarily depressing the PRESENT bar.

6) Press ERASE to erase unwanted data.

7) Select the CONTINUE softkey to allow reflex tracing to continue on the next line on the reflex screen.

NOTE MANUAL REFLEX testing may be performed by pressing MANUAL and viewing responses to stimuli presentations on the compliance meter.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

Reflex decay

1) Select test mode by pressing SPECIAL hardkey. Default test parameters are displayed above softkeys on the LCD.

NOTE Alternative sensitivities for displayed reflex response may be selected by pressing ml SCALE softkey.

2) Dotted vertical lines are displayed above the X-axis of each graph marking 5 sec. and 10 sec. points.

3) Pressure is automatically maintained at the pressure of the last reflex threshold test. PRESSURE CONTROL is active for fine-tuning pressure.

4) Set the intensity of stimulus to 10 dB HL above the reflex threshold using the INTENSITY up and down arrow hardkeys.

5) Present stimulus by pressing the PRESENT bar momentarily.

NOTE Summary data indicates the time at which 50% decay occurred, if appropriate.

6) Additional frequencies may be selected for testing using the STIMULUS up and down arrow hardkeys. (500 Hz and 1000 Hz are the best frequencies for this test.)

7) Press the STOP hardkey to end the reflex decay test and store current screen data in memory.

Eustachian tube function

Pressure Swallow Test (intact TM)

1) Select test mode by pressing ETF. Default test parameters for ETFINTACT TM are displayed above softkeys on the LCD.

2) Press START to initiate automated test (TYMP 1).

3) View ongoing test results as shown on the graphic display area, or pressure compliance admittance meters.

4) Press HOLD when the desired pressure sweep limit is reached.

5) Follow the user directions displayed on status line of LCD prior to obtaining TYMP 2 results using the CONTINUE softkey.

6) Press HOLD when the desired pressure sweep limit for TYMP 2 is reached.

7) Follow the user directions displayed on status line of LCD prior to obtaining TYMP 3 results using the CONTINUE softkey.

8) Press STOP when the desired pressure sweep limit for TYMP 3 is reached.

9) If the Eustachian tube is functioning properly, view the shift in pressure peaks of TYMPS 2 and 3 relative to TYMP 1 on the graphic display area. Numeric summary data is displayed at the right of the compliance/ admittance meter.

Perforated Ear Test (Perforated TM)

1) Select ETF-Perforated TM by pressing ETF (if not already pressed) and RETURN followed by the PERF TM softkey.

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Grason-Stadler

Operation Summary

2) Position the eartip within the ear canal.

3) Press START to initiate pressure sweep.

4) If the Eustachian tube opens during pressurization, the opening and closing pressures will be indicated in the summary data.

5) If the Eustachian tube doesnt open during pressurization, instruct the patient to swallow some water. The opening and closing pressures will be indicated.

6) Press STOP to end the test and store the results in memory.

Auto sequence testing

Programming auto sequence tests

1) Press the TYMP hardkey to place the instrument in the tymp diagnostic

mode.

2) Press the EAR softkey to select the test ear.

3) Select the AUTO SEQUENCE softkey to initiate the automatic sequencingof tests.

4) The test sequence will automatically terminate upon completion of the last test with test results automatically stored in memory.

5) Test results can be viewed by pressing the PAGE hardkey and can then be printed by pressing the PRINT hardkey.

NOTE The sequence of tests always includes Tymp 226 Hz, Y, and can be configured to include or exclude Reflex Threshold and Reflex Decay tests.

1) Select the ETF hardkey followed by the RETURN hardkey.

2) Select the INSTRUMENT OPTIONS softkey and then press the TEST SEQUENCE softkey.

3) Select the REFLEX THRESHOLD softkey and press the ON/OFF softkey to activate or deactivate the reflex threshold.

4) Acoustic reflex measurements can be obtained ipsilaterally or contralaterally. Select the STIMULUS EAR softkey to choose from Ipsi only, Contra only, or Ipsi and Contra for reflex testing.

5) Press the STIMULUS Hz softkey to select the stimulus to be included in the Reflex Threshold Auto Sequence. Scroll through each stimulus by pressing the up and down arrow softkeys to scroll through the stimuli and toggle the YES/NO softkey to program each stimulus for Reflex Threshold testing in the auto test sequence.

6) Select the REFLEX DECAY softkey and press the ON/OFF softkey to activate or deactivate reflex decay.

7) Select the STIMULUS Hz softkey to select the stimuli for Reflex Decay testing. Press the up and down arrow softkeys to scroll through the stimuli and toggle the YES/NO softkey to select or de-select the stimulus.

8) Press the RETURN hardkey twice and press the STORE softkey to store test selections in memory.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

Version 2 test procedures

The following TympStar Version 2 test procedures are summarized. Comprehensive procedures are provided in the TympStar Version 2 Reference Instruction Manual.

Tymp diagnostic

1) Select test mode by turning the POWER ON, or by pressing the TYMP hardkey.

2) Default test parameters are displayed above softkeys on the LCD. A) Selectable Probe Tone Hz: 226 Hz, 678 Hz, 1000 Hz B) Selectable Admittance Components: Y, B, G, B/G

3) Temporarily modify test parameters, if desired, by pressing the parameter softkey(s) to be changed. Use PROGRAM mode for more permanent changes. A) Alternative test parameters are displayed above the selected softkey. B) Press the desired test parameter softkey. The selected value is

displayed on the parameter status line.

C) Press BASELINE-OFF if the tymp test is performed with the

following parameters:  Y with 678 Hz or 1000 Hz  B, G, or B/G with 226 Hz, 678 Hz, or 1000 Hz

NOTE Pressing the B/G softkey allows B and G tracings to be run simultaneously.

4) Attach the probe box to the velcro strip on the shoulder probe mount.

5) Position the shoulder probe mount on the patient.

6) Position the appropriate size eartip on the probe tip and securely insert in the ear canal.

7) Press the EAR softkey, then press LEFT or RIGHT ear.

8) Press START to initiate test.

9) View ongoing test results on the graphic display area, and on pressure and admittance meters.

10) For tymp tests other than Y 226 Hz, the cursor is used to identify and set peak data points as follows: A) Press the CURSOR softkey. B) Use arrow softkeys to move the cursor to left or right on the graphics

area. Observe numeric data in cursor box at the right of pressure meter.

C) Press TYMP 1 SET PEAK softkey to specify and store peak data

for TYMP 1. Follow the same procedure to specify and store selected peak data for TYMP 2 and 3, if appropriate.

D) Press CURSOR-OFF.

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11) Press STOP to end the test, store the results in memory, and display the summary data on the screen.

Grason-Stadler

Operation Summary

NOTE A manual tymp test may be initiated by pressing the MANUAL hardkey. Rotate the pressure knob to vary pressure and view ongoing test results graphically, or on pressure and admittance meters.

Manual tymp

1) Securely insert the probe tip within the patients ear canal and press the TYMP hardkey.

2) Press the EAR softkey and select the right or left ear.

3) Press the MANUAL hardkey to pressurize the ear canal to the previously selected start pressure. Manual mode will appear below the Name, ID and Tester Information on the display.

4) Use the PRESSURE CONTROL knob to vary the pressure within the ear canal and control the speed of the tympanometric test.

5) View test results on the display along with the pressure and compliance meters. Test summary information is displayed to the right of the meters for the two most recent pressure sweeps.

NOTE The ERASE hardkey can be used to delete test data prior to pressing the STOP hardkey.

6) Press the STOP hardkey to store the last two tracings in memory.

7) Press the PAGE hardkey to view test results.

8) Press the PRINT hardkey while in the PAGE mode for printed tests. MANUAL will appear on the printout indicating a manual test.

Tymp screening

1) Enter test mode by pressing TYMP followed by RETURN. Press the SCREEN softkey. The test will automatically start once a seal is detected.

2) Default test parameters are displayed above softkeys on the LCD. Only 226 Hz Y is available in this test mode.

3) Attach the probe box to the velcro strip on the shoulder probe mount or to the wristband probe mount.

4) Press the EAR softkey, then press LEFT or RIGHT ear.

5) Position the appropriate size SCREENING eartip on the probe tip.

6) With hthe and-held probe, obtain a seal at the entrance to the ear canal.

Probe lights indicate the following:

Solid Green = Test In Progress Solid Amber = Occlusion Blinking Amber = Leak Blinking Green = OK To Begin A Test

7) The test will start automatically if ear canal seal is good. Screening IPSI Reflex test at 1 kHz will follow tymp.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 3

8) A Test Complete Remove Probe message will appear on the display when the test is complete.

9) View test results on the graphic display area along with summary data at the right of the pressure and compliance meters.

Reflex threshold

1) Select test mode by pressing REFLEX.

2) Default test parameters are displayed above softkeys on the LCD. A) Selectable Probe Tone Frequencies: 226 Hz, 678 Hz, 1000 Hz. B) Selectable Admittance Components: Y, B, G. C) AUTO ZERO is used to baseline admittance between stimulus

presentations.

NOTE Reflex responses may be inverted, or deflected in an upward direction when using higher probe tones. Direction of response may also differ when testing with Y, B or G components.

D) Alternative sensitivities for displayed reflex response may be selected

by pressing the ml SCALE softkey.

3) Press START to pressurize the ear to dynamic peak pressure maintained from last tymp, or to 0 daPa if no previous tymp data is available. Pressure control is active for fine-tuning pressure if tymp is sharply sloped, i.e.: offset from peak by 10 to 15 daPa.

4) Select intensity of stimulus by pressing the INTENSITY up or down arrow. Press the STEP SIZE softkey to set 1, 2, or 5 dB steps.

5) Present auto-timed stimulus by momentarily pressing the PRESENT bar. (Stimulus may also be presented with manual timing.)

6) Press ERASE to erase sub-threshold presentations or unwanted data, i.e.: amplitudes of less than 0.02 ml with 226 Hz, 0.06 mmhos with 678 Hz, or 0.09 mmhos with 1000 Hz.

7) Press the CONTINUE softkey to allow reflex tracings to continue onto the next line of reflex screen and onto the next page in memory.

3 - 24

NOTE Once CONTINUE is selected, test results are stored in memory and may not be erased.

8) The STIMULUS up and down arrow hardkeys are used to select alternative test stimuli.

9) The CURSOR softkey may be used to examine data points from individual tracings.

10) If Reflex Decay, ARLT, or AR Sensitization testing is to be done on the same ear, press the SPECIAL hardkey without pressing STOP. This allows the pressure from Reflex Threshold to be maintained for the next test. If not, press STOP to terminate testing.

Grason-Stadler

Operation Summary

Automatic auto zero

Mark Threshold

Auto Zero is used to baseline admittance prior to or between stimulus presentations when performing acoustic Reflex Threshold, Reflex Decay, Acoustic Reflex Latency and Acoustic Reflex Sensitization tests. Before pressing START, select the AUTO ZERO softkey followed by the AUTOMATIC softkey to activate this feature. The Admittance meter will automatically be zeroed each time the PRESENT bar is pressed.

The Admittance meter may be zeroed manually after pressing START by pressing the AUTO ZERO softkey as frequently as needed.

1) Select the MARK THRESHOLD softkey.

2) Select the softkey to move the cursor.

3) Press the MARK LINE 1 or MARK LINE 2 softkey to display the threshold marker (an asterisk).

4) Press the NR LINE 1 or NR LINE 2 softkey to display no response (NR).

5) Select the EXIT softkey to return to the reflex threshold diagnostic menu.

Reflex Threshold Seeking

Threshold Seek automates the sequence of button presses used to arrive at reflex threshold values and also automates the marking of reflex threshold values.

NOTE Threshold Seek should only be used with quiet, cooperative patients.

1) Select test mode by depressing REFLEX. Default test parameters are

displayed above softkeys on the LCD.

2) Press the THRESHOLD SEEK softkey.

3) Press ON or CONFIGURE to change test parameters.

4) Press START to pressure the ear to the dynamic peak pressure maintained from the last tymp, or to 0 daPa if no previous tymp data is available.

5) Present auto timed stimulus by momentarily depressing the PRESENT bar.

6) Press ERASE to erase unwanted data.

7) Select the CONTINUE softkey to allow reflex tracing to continue on the next line on the reflex screen.

NOTE MANUAL REFLEX testing may be performed by pressing MANUAL and viewing responses to stimuli presentations on the compliance meter.

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Chapter 3

Reflex decay

1) Select test mode by pressing SPECIAL.

2) Default test parameters are displayed above softkeys on the LCD. A) Selectable Probe Tone Frequencies: 226 Hz, 678 Hz. B) Selectable Admittance Components: Y, B, G. C) Alternative sensitivities for displayed reflex response may be selected

by pressing the ml SCALE softkey.

D) Maximum selectable stimulus ON TIME is limited by selected

TIMEBASE.

E) AUTO ZERO is used to baseline admittance between stimulus

presentations.

3) Dotted vertical lines indicate 5 sec. and 10 sec. points.

4) Pressure control is active for fine-tuning pressure.

5) Set intensity of stimulus to 10 dB above reflex threshold by pressing the INTENSITY up or down arrows. Step size may be set to 1, 2, or 5 dB using STEP SIZE softkey.

6) Present stimulus by pressing the PRESENT bar momentarily. First press START if pressure was not maintained from a prior reflex test.

NOTE Summary data indicates the time at which 50% decay occurred, if appropriate. CURSOR softkeys may be used to call out numeric points on Line 1 and Line 2 of the graphics area.

Acoustic reflex latency test (ARLT)

7) Additional frequencies may be tested by using the STIMULUS up and down arrow hardkeys. (500 Hz and 1000 Hz are the best frequencies for this test.)

8) Go directly to another reflex test without pressing STOP to maintain pressure within the ear canal, or press STOP to terminate reflex decay testing.

1) Press SPECIAL followed by RETURN.

2) Select test mode by pressing the ARLT softkey. Default test parameters are displayed above softkeys on the LCD. A) ARLT is performed with a 226 Hz Probe Tone. Y, B or G may be

selected.

B) Maximum selectable ON TIME of the stimulus is limited by selected

TIMEBASE.

C) Alternative sensitivities for displayed reflex response may be selected

by pressing the ml SCALE softkey.

D) Press the AVERAGE softkey to change number of reflex responses to

be averaged.

3) The pressure knob is active for fine-tuning pressure.

4) Set the intensity of stimulus to 10 dB above the reflex threshold by pressing INTENSITY up and down arrows. Step size may be set to 1, 2, or 5 dB using the STEP SIZE softkey.

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Grason-Stadler

Operation Summary

5) Use AUTO ZERO, if necessary, to zero admittance prior to presenting stimulus.

6) Present stimulus by pressing the PRESENT bar momentarily. First press START if pressure was not maintained from a prior reflex test.

7) The following points are identified by short vertical lines on the ARLT display: A) Time from signal onset to points where reflex curve reaches 10% and

90% of its maximum amplitude.

B) Time from signal offset to points where reflex curve decays to 90%

and 10% of its maximum amplitude.

NOTE Numeric summary data indicates the 10%/90% ON and OFF points of the response for Line 1 and Line 2. CURSOR softkeys may be used to call out numeric points on X and Y axes of Line 1 and 2.

8) Additional frequencies may be tested by using STIMULUS up and down

arrow hardkeys.

9) Go directly to another reflex test without pressing STOP to maintain pressure within the ear canal, or press STOP to terminate ARLT testing.

Acoustic reflex sensitization (A.R. SENSI)

1) Press SPECIAL followed by RETURN.

2) Select test mode by pressing the A.R. SENSI softkey. Default test parameters are displayed above the softkeys on the LCD. The test is performed with a 226 Hz probe tone. Y, B, or G may be selected.

NOTE The facilitator (sensitizing signal) threshold level should be known prior to selecting the facilitator parameters. (6 kHz or BBN are most suited for facilitator stimuli.)

3) Press the STIMULUS EAR softkey and press IPSI or CONTRA to obtain reflex threshold data if threshold information per stimulus has not already been obtained. Use the same procedure as in Reflex Threshold. A) IPSI stimuli available: 0.5, 1, 2, 4, 6 kHz, EXT, and N-A. B) CONTRA stimuli available: 0.25, 0.5, l, 2, 4, 6 kHz, BBN, EXT,

and N-A.

NOTE STEP SIZE should be set to 1 or 2 dB to obtain precise threshold data.

4) The facilitating (f) and activating (a) stimuli may be presented IPSI (I) or CONTRA (C). Use the STIMULUS EAR softkey to press the desired combination: CfIa, CfCa, IfCa, Ifia.

5) To select the facilitator stimulus and intensity, press the FACILITATOR

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Chapter 3

softkey.

A) Use the STIMULUS up and down arrows to select the desired high

frequency stimulus.

B) Use the INTENSITY up and down arrows to set the intensity level.

Try 3 to 4 dB below threshold level for selected stimulus.

C) Press EXIT.

6) The activator stimulus and intensity may now be selected. A) Use the STIMULUS up and down arrows to select the desired

stimulus. B) Press the STEP SIZE softkey to select 1, 2, or 5 dB steps. C) Use the INTENSITY up and down arrows to set dB level. Start the

intensity of the activator at a very low level, e.g.: 40 dB to arrive at the

threshold value.

 IPSI Stimuli available: 0.5, 1, 2, 4 kHz, EXT, and N-A.  CONTRA Stimuli available: 0.25, 0.5, l, 2, 4 kHz, BBN, EXT,

and N-A.

7) Press PRESENT to simultaneously present facilitating and activating stimuli. First press START if pressure was not maintained from a prior reflex test.

8) Press ERASE to delete sub-threshold presentations or unwanted data, i.e.: amplitudes below 0.02 ml.

9) Press STOP to terminate testing.

Eustachian tube function

Pressure Swallow Test (intact TM)

1) Select test mode by pressing ETF. Default test parameters for ETFINTACT TM are displayed above the softkeys on the LCD.

2) Press START to initiate automated test (TYMP 1).

3) View ongoing test results as shown on graphic display area, or pressure compliance admittance meters.

4) Press HOLD when desired pressure sweep limit is reached.

5) Follow the user directions displayed on the status line of the LCD prior to obtaining the TYMP 2 results using the CONTINUE softkey.

6) Press HOLD when the desired pressure sweep limit for TYMP 2 is reached.

7) Follow user directions displayed on status line of LCD prior to obtaining TYMP 3 results using CONTINUE softkey.

8) Press STOP when desired pressure sweep limit for TYMP 3 is reached.

Perforated Ear Test (Perforated TM)

1) Select ETF-Perforated TM by pressing ETF (if not already pressed) and RETURN followed by PERF TM softkey.

2) Position eartip within ear canal.

3) Press START to initiate the pressure sweep.

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Grason-Stadler

Operation Summary

4) If the Eustachian tube opens during pressurization, the opening and clos ing pressures will be indicated in the summary data.

5) If the Eustachian tube doesnt open during pressurization, instruct the

patient to swallow some water. The opening and closing pressures will be indicated.

6) Press STOP to end the test and store the results in memory.

Multiple frequency tympanometry (MULTIPLE Hz)

1) Press CLEAR. Press the CLEAR ALL softkey to ensure the availability of

26 pages of memory.

2) Press SPECIAL followed by RETURN.

3) Select test mode by pressing the MULITIPLE Hz softkey. Default test

parameters for TEST 1 of the test series are displayed above softkeys on the LCD. A) The GSI TympStar automatically runs a 226 Hz Y tymp to determine

the peak pressure value for the second probe frequency sweep.

B) The ADMITTANCE softkey indicates which component is measured

as a function of probe frequency at the start and peak pressures. (B is the best component for this test.)

NOTE It may be helpful to select a sweep rate of 12.5 daPa/sec for sharply sloped tymps.

4) Ensure that the ear canal is securely sealed.

5) Press START to initiate test. Probe tone automatically sweeps

from 250 Hz to 2000 Hz in 50 Hz steps at start pressure.

6) Next, Y 226 Hz tymp data is collected and displayed as TEST 1 of the

series. As in Tymp Diagnostic Mode, press HOLD at desired stopping pressure or allow pressure sweep to continue to -400 daPa. A) Tymp summary data will be displayed at the right of the admittance

meter.

B) Use CURSOR if a different peak pressure value is desired.

7) Press the CONTINUE softkey to initiate TEST 2 of the series. Probe tone

automatically sweeps from 250 Hz to 2000 Hz in 50 Hz steps at tymp peak pressure.

8) DB (or DY, or DG, if selected) are calculated and plotted as a function of

probe frequency on upper graph display. Changes in phase of admittance (Dq) as a function of probe frequency are calculated and plotted on the lower graph.

NOTE DY, B, or G values and Dq values are calculated as the difference between values obtained at peak pressure versus start pressure.

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Chapter 3

9) A cursor line approximates the resonance point of the ear along the Hz axis.

A) CURSOR left and right arrow softkeys may be used to specify a

different Hz point for DY, B, or G values and Dq . Press SET Hz softkey to record

B) Cursor position now determines probe frequency for next tymp.

10) Press CONTINUE to display tymp format for TEST 3 of the series.

11) Press START or CONTINUE to obtain a tymp at this probe frequency. A) Tymp data is displayed on screen for selected probe frequency. B) Use CURSOR left and right arrow softkeys to specify and set peak

admittance and pressure.

12) Test sequence can be terminated by selecting STOP,

13) Tymps can be obtained for frequencies below and above identified resonance point of the ear. To select probe tone frequency for next tymp: A) Press

B) Press DELTA DISPLAY softkey to return to delta display screen.

14) Press STOP to end the test.

the PROBE Hz softkey. Use up and down arrows to arrive at

desired Hz. Press SET Hz softkey to select probe tone. Use START or CONTINUE to run next tymp.

Cursor line indicates probe frequency from last tymp. Press CURSOR to select new probe tone frequency. Press CONTINUE followed by START or CONTINUE to begin next tymp.

the new value.

Auto sequence testing

1) Press the TYMP hardkey to place the instrument in the tymp diagnostic mode.

2) Press the EAR softkey to select the test ear.

3) Select

4) The test sequence will automatically terminate upon completion of the

5) Test results can be viewed by pressing the PAGE hardkey and can then

NOTE The sequence of tests always includes Tymp 226 Hz, Y, and can be configured to include or exclude Reflex Threshold and Reflex Decay tests.

the AUTO SEQUENCE softkey to initiate the automatic sequencing

of tests.

last test with test results automatically stored in memory.

be printed by pressing the PRINT hardkey.

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Grason-Stadler

Operation Summary

Programming auto sequence tests

1) Select the ETF hardkey followed by the RETURN hardkey.

2) Select the INSTRUMENT OPTIONS softkey and then press the TEST SEQUENCE softkey.

3) Select

4) Acoustic reflex measurements can be obtained ipsilaterally or

5) Press the STIMULUS Hz softkey to select the stimulus to be included in

6) Select the REFLEX DECAY softkey and press the ON/OFF softkey to

7) Select the STIMULUS Hz softkey to select the stimuli for Reflex Decay

8) Press the RETURN hardkey twice and press the STORE softkey to

the REFLEX THRESHOLD softkey and press the ON/OFF softkey

to activate or deactivate reflex threshold.

contralaterally. Select the STIMULUS EAR softkey to choose from Ipsi only, Contra only, or Ipsi and Contra for reflex testing.

the Reflex Threshold Auto Sequence. Scroll through each stimulus by pressing the up and down arrow softkeys to scroll through the stimuli and toggle the YES/NO softkey to program each stimulus for Reflex Threshold testing in the auto test sequence.

activate or deactivate reflex decay.

testing. Press the up and down arrow softkeys to scroll through the stimuli and toggle the YES/NO softkey to select or de-select the stimulus.

store test selections in memory.

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Chapter 3

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Grason-Stadler

Calibration

Introduction

This chapter describes how to calibrate the TympStar Middle-Ear Analyzer. These instructions are intended for persons experienced in the use of sound level meters, calibration sound sources, acoustic test cavities and the requirements of test calibration documentation.

Calibration measurement data will be recorded by the TympStar and can be printed during the calibration process.

Cal/Normal

switch

The calibration mode of the TympStar is activated by configuring the DIP switch on the digital board and turning the boards Cal/ Normal switch to the ON position. This changes the function of the front panel controls, permitting the calibration data to be stored in the TympStars memory. Calibration is an interactive process and is assisted greatly by instruction provided on the TympStars LCD display. The display will show current measurement parameters and give instructions for completing the calibration.

Calibration parameters

Calibration

instructions

4 - 1GSI TympStar Version 1 and Version 2 Service Manual

Cal Options

switch

Chapter 4

This chapter includes:

When to calibrate the TympStar page 4-2 Calibration requirements page 4-2 Preparing for calibration page 4-4

Cautions and warnings page 4-4 Tools and equipment required page 4-4

Cleaning the probe page 4-4 Cal/Normal switch page 4-6 Cal Options switch page 4-6 Probe serial number page 4-26 Resolving problems page 4-27 Calibration procedures page 4-28

TympStar calibration controls page 4-28

Custom transducers page 4-32

Transducer connections page 4-32

Version 1 calibration page 4-33

Version 2 calibration page 4-51 Returning to Normal Test mode page 4-66

When to calibrate the TympStar

Calibration requirements

Complete calibration sequence

The TympStar must be calibrated when the digital, PC104 or analog board is repaired, if a transducer is changed or if the probe is repaired. Probe tone frequency data (Self-Cal data) are stored in the TympStar instrument. All other data for transducers and pressure are stored in the probe. Normally, circuit boards or the probe can be replaced with new complements from the factory without the need for calibration.

Some aspects of TympStar calibration can be checked singularly without the need for a complete or routine calibration sequence by simply navigating through the calibration menus to the desired screen and performing the check. However, typically calibration is performed as a complete calibration sequence or as a routine calibration sequence.

A complete calibration sequence must be performed if:

 A performance problem is suspected  A repair has been made to the TympStar involving the digital board,

analog board, PC104 board, probe box or transducers

4 - 2

The complete calibration sequence must include:

 Loading default data and performing Self-Cal  Contra, Ipsi and probe tone SPL calibrations  Y (Version 1) or Y/B/G (Version 2) calibration  Pressure system calibration

Grason-Stadler

Calibration

Upon completion of a complete calibration sequence, return to the normal mode and check compliance calibration at 0 daPa. Then enter Reflex Decay test (under the SPECIAL hardkey) and verify that Ipsi and Contra sound pressure levels are within the specified accuracy. Attenuator linearity and distortion can also be checked in this mode. A routine calibration sequence should be performed quarterly or annually and includes:

 Check the Contra, Ipsi and probe tone SPL calibration and recalibrate if

necessary  Perform Y or Y/B/G calibration  Check the pressure system calibration and recalibrate if necessary

Routine calibration sequence

Upon completion of a routine calibration sequence, return to the normal mode and check compliance calibration at 0 daPa. Then enter Reflex Decay test (under the SPECIAL hardkey) and verify that Ipsi and Contra sound pressure levels are within the specified accuracy. Attenuator linearity and distortion can also be checked in this mode.

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Chapter 4

Preparing for calibration

WARNING It will be necessary to perform tasks within the TympStar enclosure while power is applied to the instrument. Do not touch electrical circuitry, wiring or complements. Voltages are present inside the enclosure that can cause severe personal injury or death!

CAUTION Verify that the probe tip is clean and the probe tubes are clean and undamaged before attempting calibration.

Tools and equipment required

Cleaning the probe and Contra phone

Probe

The tools and equipment required for calibration includes:

 Type 1 sound level meter  2 cc HA-1 coupler  Electronic manometer  Philips screwdriver  Small straight edge screwdriver

To ensure calibration accuracy, it is essential to clean the probe tip and Contra phone prior to calibration.

Step 1 Remove the probe eartip and tygon tubing attached to the three metal probe tubes at the rear of the probe tip.

CAUTION Do not alter the length of the tubing by cutting it. When reconnecting the tygon tubing to the probe tubes, ensure that there are no sharp edges or burrs on the probe tubes that could cut the tygon tubing.

4 - 4

Step 2 Using the cleaning floss shipped with your instrument, remove debris from each tube by pushing the floss through the tube from the back to the front of the probe tip.

CAUTION Avoid getting the probe moist. Clean the eartips separately. Do not place an eartip on the probe unless it is thoroughly dry.

Grason-Stadler

Calibration

Feed the stiff end of the cleaning floss into the tube and pull the floss completely through the tube. Discard the used floss. Repeat this process for each of the remaining probe tubes. Do not reuse floss.

Step 3 Reconnect the tygon tubing to the probe tubes. The center tube has the larger diameter.

Contra phone

Step 1 Unplug the Contra phone from the jack on the probe box and make sure the main transducer opening is clear.

Step 2 Unplug the Contra phone cable from the transducer by pulling the cable connector straight away from the transducer body.

Step 3 Use isopropyl alcohol and a clean tissue or Q-tip to clean the two jacks in the Contra phone body, and the two Contra phone cable plugs.

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4 - 5

Cal/Normal switch

The Cal/Normal switch is located on the digital board and is used to gain access to the calibration mode. Access to the switch is gained by removing the three Philips retaining screws from the bottom front edge of the TympStar case, lifting the front panel and locking the panel stay in the open position.

The Cal/Normal switch is located on the top left of the digital board and is used to switch between the normal test mode and the calibration mode. The switch must be placed in the down position to perform calibrations and diagnostics.

Chapter 4

NORMAL

Mode

CAL

Mode

Cal/Normal

switch

Cal Option DIP switch

The Cal Option DIP switch is located on the digital board are is used to configure calibration options. Access to the switch is gained by removing the three Philips retaining screws from the bottom front edge of the TympStar case, lifting the front panel and locking the panel stay in the open position.

The Cal Option switch is an eight position DIP switch located on the rightcenter portion of the digital board. Individual switches are ON in the up position or OFF in the down position. The individual switches are numbered on the switch.

Cal Options

switch

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Grason-Stadler

Calibration

Cal Option switch position functions are listed below: Switch 1: Factory use only Switch 2: GSI/custom RTL transducer calibration Switch 3: Unused Switch 4: Unused Switch 5: Unused Switch 6: Diagnostic mode Switch 7: Self-Cal Switch 8: Load default calibration data

The Cal Option switch settings are read by the system when:

 The system power is on and the Cal/Normal switch is moved to the Cal

position  The Cal/Normal switch is in the Cal position and the system power is

turned on

Switch 1: Factory use only

Switch 2: GSI/custom RTL transducer calibration

Factory use only

This position is used to activate the TARG SPL softkeys in the Ipsi and Contra calibration modes. The TARG SPL softkeys allow the reference threshold values (RTL) and output levels to be offset from the default GSI values by a maximum of plus or minus 10 dB. If the TARG SPL softkeys are pressed and released, the output level and LCD indicated value will change by 0.5 dB. If these softkeys are pressed and held, the output level and LCD indicated value would scroll in the direction indicated by the TARG SPL arrow. The custom calibration levels will be stored by the system when the Data Transfer button is pressed.

NOTE If the TympStar is set to the custom mode, all references to dB HL on the LCD and printer during normal operation will be followed by the words NON-GSI. This is so that all test results will clearly indicate that the stimulus SPLs were not at GSI standard levels. Also, the program that adjusts stimulus SPL based on total load volume is bypassed. The program subtracts 1.0 dB per 0.1 ml for loads of 1.1 ml down to 0.15 ml (-1.0db/0.1 ml).

Switch 3: Unused

Switch 4: Unused

Switch 5: Unused

Unused

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Chapter 4

Switch 6: Diagnostic mode

This position will activate the diagnostic portion of the Cal mode when the Cal/ Normal switch is in the Cal position. The Diagnostic Mode Screen will be displayed.

Four diagnostic functions are displayed above softkeys at the bottom of the screen. These include:

 Hardware Diagnostics  Ports Diagnostics  Miscellaneous Diagnostics  Error Log

Hardware Diagnostics

Pressing the HARDWARE DIAG softkey displays the Hardware Diagnostic Mode screen.

The right side of the screen shows real-time analog to digital (A/D) values for the Y, B, G and q MIC circuit outputs. Minimum and maximum values are also shown.

The CP value displays the control processor A/D output for the selected source to the pressure MUX.

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Grason-Stadler

Calibration

The Hardware Diagnostic Mode Menu structure is shown below.

DAC LEVELS

Digital to analog (DAC) converters are used to adjust the gain of voltage controlled amplifiers for the IPSI, CONTRA, PROBE and MIC circuits. The DAC levels and associated circuit gain can be manually adjusted using the DAC LEVEL function.

Pressing the DAC LEVEL softkey displays the DAC level menu above softkeys at the bottom of the LCD.

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Chapter 4

The gain for the desired circuit can be adjusted by pressing the corresponding softkey.

The selected circuit will be indicated in the left column of the DAC LEVELS portion of the LCD screen with its level shown in the right column. The example below shows the contra circuit selected with a level of 255.

NOTE The IPSI/CONTRA/PROBE outputs must be turned ON using the IPSI ON/ OFF, CONTRA ON/OFF or PROBE ON/OFF softkey.

The minimum gain for each circuit corresponds to a DAC value of 0, the maximum corresponds to 255.

The DAC Level is adjusted by pressing the UP and DOWN ARROW softkeys. The adjustment increment can be set to step values of 1 or 10 by pressing the STEP=1 or STEP=10 softkey.

Pressing EXIT returns the display to the DAC level menu, where other circuits can be selected and adjusted in the same manner.

Pressing the RETURN hardkey displays the Hardware Diagnostic Mode menu at the bottom of the screen again.

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Grason-Stadler

Calibration

IPSI SOURCE

The signal source for the IPSI channel can be selected by pressing the IPSI SOURCE softkey. The possible IPSI sources are shown in the center of the LCD in the IPSI list.

The desired source can be selected by scrolling through the list using the UP and DOWN ARROW softkeys. This example shows the 1K Hz source selected.

Pressing the EXIT softkey displays the Hardware Diagnostic Mode menu at the bottom of the screen again.

IPSI ON/OFF

CONTRA SOURCE

The IPSI output channel is toggled ON or OFF by pressing the IPSI ON/OFF softkey.

The signal source for the CONTRA channel can be selected by pressing the CONTRA SOURCE softkey. The possible CONTRA sources are shown in the center of the LCD in the CONTRA list.

The desired source can be selected by scrolling through the list using the UP and DOWN ARROW softkeys. This example shows the 1K Hz source selected.

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Chapter 4

CONTRA ON/OFF

MUX INPUTS

Pressing the EXIT softkey displays the Hardware Diagnostic Mode menu at the bottom of the screen again.

The CONTRA output channel is toggled ON or OFF by pressing the CONTRA ON/OFF softkey.

The desired PRESSURE MUX or MIC MUX input can be selected for measurement by pressing the MUX INPUTS softkey. The MUX Input menu will be displayed at the bottom of the LCD.

Pressing the PRESSURE MUX or MIC MUX softkey displays UP and DOWN ARROW softkeys that can be used to select a MUX source.

The PRESSURE MUX sources are shown in the upper-left portion of the LCD. This example shows the CONTRA SPKR source selected as the input for the PRESSURE MUX.

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Grason-Stadler

Calibration

The MIC MUX sources are shown in the center-left portion of the LCD. This example shows the PROBE SPKR1 source selected as the input for the MIC MUX.

Pressing the EXIT softkey displays the MUX input menu again. Pressing the RETURN hardkey displays the Hardware Diagnostic Mode menu.

PROBE/FILER

The probe output tone and input filter mode can be selected by pressing the PROBE/FILTER softkey. The output can also be toggled between standard and multi-frequency tones. The PROBE/FILTER menu will be displayed.

Selected probe tones are displayed in the PROBE TONE list in the center-left of the LCD, and can be changed for standard and multi-frequency tones by pressing the PROBE TONE UP and DOWN ARROWS.

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4 - 13

Chapter 4

The probe tone can be toggled between STANDARD and MULTI-FREQ by pressing the STANDARD/MF softkey. This example shows a standard probe tone of 1000 Hz selected.

Selected input filters are displayed in the FILTER list in the center of the LCD, and can be changed by pressing the FILTER MODE UP and DOWN ARROWS. This example shows a filter mode of 4 SWEPT BP selected.

ROUTING

4 - 14

Pressing the EXIT softkey displays the Hardware Diagnostic Mode menu again.

Output signal routing for IPSI and CONTRA channels by pressing the ROUTING softkey. The Routing menu will be displayed.

The desired channel routing can be selected by pressing the corresponding softkey, as shown below:

I  I: IPSI channel to IPSI transducer I  C: IPSI channel to CONTRA transducer C  I: CONTRA channel to IPSI transducer C  C: CONTRA channel to CONTRA transducer

Grason-Stadler

Calibration

Pressing the EXIT softkey displays the Hardware Diagnostic Mode menu again.

PROBE ON/OFF

PORTS DIAG.

The probe tone output can be toggled on and off by pressing the PROBE ON/OFF softkey.

The internal and external RS-232 ports and the parallel port can be tested by pressing the PORTS DIAG softkey. The Ports Diagnostic mode screen will be displayed.

Test results are displayed in the center of the LCD.

RS-232 INT. ON/OFF

Pressing the RS-232 INT. ON/OFF softkey toggles the loopback test sequence for the internal RS-232 port on or off. Data is sent to the port, looped back and compared to the original output. Good and bad data counts are accumulated until the test is stopped by pressing the RS-232 INT ON/OFF softkey again.

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Chapter 4

RS-232 EXT. ON/OFF

PARALLEL ON/OFF

Pressing the RS-232 EXT ON/OFF softkey toggles the loopback test for the external port on or off. Loopback testing of the external RS-232 port requires the use of a male RS-232 loopback connector. The connector wiring is shown here. The TympStar is DCE relative to RS232 data flow.

Plug the loopback connector into the

Rear view of male connector

RS-232 port on the Tympstar rear panel, and press the RS-232 EXT ON/OFF softkey to begin the test. Good and bad data counts are accumulated until the RS232 EXT ON/OFF softkey is pressed again.

Pressing the PARALLEL ON/OFF softkey toggles the parallel port test on or off. When an external printer is connected to the TympStar parallel port, test data will be printed on the external printer. When no external printer is connected, test data is printed on the internal thermal printer.

In either case, the test will continue sending data to the printer until the PARALLEL ON/OFF softkey is pressed again. An example of the printed test data is shown below.

4 - 16

NOTE Any two or all of the PORTS DIAG. Tests can be conducted simultaneously. Pressing the RETURN hardkey displays the Hardware Diagnostic Mode menu again.

Grason-Stadler

Calibration

MISC. DIAG

The miscellaneous diagnostics provide test functions for the display, probe LEDs, panel hardkeys and softkeys, DIP switches, system EEPROM, software timer, and watchdog timer. The system calendar and clock can also be set from the MISC. DIAG menu.

Pressing the MISC. DIAG softkey displays the Miscellaneous Diagnostic Mode screen.

The MISC. DIAG menu is displayed above the softkeys at the bottom of the LCD.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 4

CALENDAR CLOCK

Pressing the CALENDAR CLOCK softkey displays the Calendar Clock screen.

Current date and time settings are shown at the center of the screen, and the Calendar Clock menu is displayed above the softkeys at the bottom.

Pressing the SET softkey displays the Set Date/Time menu at the bottom of the LCD.

Pressing the SET DATE or SET TIME softkey displays the current settings for the date or time respectively across the bottom of the screen.

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Grason-Stadler

Calibration

The example below shows date settings.

Pressing a setting category softkey such as MONTH or HOUR displays UP and DOWN ARROWS for increasing or decreasing the setting value.

When the desired value is displayed, press the RETURN hardkey to display all of the date or time settings again.

Pressing the SET softkey stores the current date or time settings in system memory, and returns to the Set Date/Time menu.

Pressing the RETURN hardkey, then the EXIT softkey displays the MISCELLANEOUS Diagnostic menu again.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 4

DISPLAY & LEDS

Pressing the DISPLAY & LEDS softkey starts an automatic test sequence that displays decreasing size checkerboard patterns on the LCD and flashes the probe box LEDs.

The LCD pattern automatically progresses through the following sequence:

 LCD is all black  LCD is all white  LCD is a checkerboard. Black on white squares, then white on black squares.

The checkerboard pattern automatically decreases in size until the test is complete.

The probe box LEDs illuminate as follows: LCD is all black: Green LED is ON LCD is all white: Orange LED is ON LCD is checkerboard: Repeating pattern:

3 green flashes, then 1 orange Flash

Upon conclusion of the test, the Miscellaneous Diagnostic menu is displayed again.

Green LED

Orange LED

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Calibration

KEYS

Pressing the KEYS softkey displays instructions in the center of the screen, and starts a test sequence that displays hardkey or softkey activations on the LCD.

Pressing and holding any hardkey or softkey causes the system to display the name of the key, and to indicate that it is pressed.

Releasing the key changes the display to indicate that the hardkey or softkey was released.

Pressing the EXIT softkey three times in rapid succession ends the test and displays the Miscellaneous Diagnostic menu again.

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Chapter 4

DIP SWITCHES

Pressing the DIP SWITCHES softkey displays the current settings of the Cal options DIP switch on the LCD.

The DIP switch settings can be changed and verified on the LCD.

EEPROM

WARNING Do not touch any wires, circuitry or components in the Tympstar enclosure directly, or with conductive tools. AC power present in the enclosure can cause serious injury or death.

Pressing the EXIT softkey displays the Miscellaneous Diagnostic menu again.

Pressing the EEPROM softkey displays a sequence of serial EEPROM test addresses and test results.

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Calibration

Pressing the START softkey initiates a test sequence that evaluates an incrementing series of memory locations by writing to and reading from each location in the series. The test continues looping through memory addresses until the test fails, or the STOP softkey is pressed. If the test fails, the address, expected contents, and actual contents of the problem memory location are displayed.

Pressing the STOP softkey halts the test. Pressing the EXIT softkey displays the Miscellaneous Diagnostic menu again.

SOFTWARE TIMER

Pressing the SOFTWARE TIMER softkey displays the software timer test results and starts an automatic timer test. The software timer test confirms correct processor instruction execution by using

the processor clock and a software instruction loop to count to approximately 10 seconds.

Upon conclusion of the test, the timer value is compared to the actual elapsed time, and a pass/fail indication is displayed. Pressing the EXIT softkey displays the Miscellaneous Diagnostic menu again.

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Chapter 4

WATCHDOG TIMER

Pressing the WATCHDOG TIMER softkey displays the watchdog timer test instructions and test results.

Pressing the smaller time value softkey tests the system for premature watchdog timer triggering. The software timer should complete its cycle without triggering the watchdog timer error.

Pressing the larger time value softkey tests the system for watchdog timer failures. The software timer cycle is long enough to trigger the watchdog timer, and should trigger an error. When the error is triggered, an error message is displayed that contains instructions. Follow the instructions on the LCD to PRINT control information or RESUME operation.

Pressing the RESUME softkey restarts the TympStar system and displays the Diagnostic Mode menu.

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Calibration

ERROR LOG

Pressing the ERROR LOG softkey displays a date/time-stamped log of errors.

The Error Log displays the processor, major error number and minor error number are listed.

Refer to Chapter 8: Troubleshooting for error descriptions.

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Chapter 4

Switch 7: Self-Cal

Switch 8: Load default calibration data

If this switch is in the ON position when the Cal mode is entered, the TympStar will perform a Self-Calibration. The Self-Cal automatically adjusts the probe tone frequencies to within plus or minus one percent of nominal and balances some microphone filters for proper linearity. Once Self-Cal is complete, all the pertinent calibration data is stored in the TympStar.

Default calibration data is stored by the TympStar and is used as a basis for calibrations. This data consists of operational parameters for stimulus SPL, compliance circuits, probe tone frequencies and microphone filters. When the Cal mode is entered with the switch in the ON position, softkeys will be displayed on the LCD providing a choice of default data that can be loaded.

CAUTION Default data is not accurate for test measurements. It is only useful as a starting point for complete calibration. A Self-Cal followed by a complete system calibration must be performed after loading default data.

Probe serial number

The TympStar calibration can be performed only when the TympStar system is operating with the correct probe. The serial number of the correct probe is shown on the TympStars initialization screen when power is applied to the system.

CAUTION If the serial number shown on the initialization screen does not match the TympStars probe serial number label, abort the calibration and contact GSI technical support.

Probe serial number

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Resolving problems

It is unlikely that you will encounter problems during calibration. However, if you are unable to meet a calibration objective at any point in the process you must take corrective action and start the process again from the beginning.

If you encounter a problem: Check your equipment, test cavities and connections, and start over.

Still have a problem: Clean the probe or Contra phone, check the probe tubes and start over.

Still have a problem: Change the probe assembly and start over.

Still have a problem: Contact your local GSI representative or GSI technical support.

Calibration

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Chapter 4

Calibration procedures

TympStar calibration controls

Hardkeys

The TympStar is calibrated using a combination of front panel hardkeys and LCD panel softkeys.

Hardkeys are used as follows: Stimulus Up/Down arrows: Scrolls up or down through available stimulus tone frequencies.

Intensity Up/Down arrows: Adjusts output level of stimulus tone up or down in 0.5dB increments.

Present bar: Toggles the stimulus tone on and off.

Data transfer key: Stores currently displayed calibration values of tone frequency and level in the TympStars memory.

Return key (LCD panel): Returns to previous (higher) level in the calibration menu hierarchy.

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Softkey

functions

RETURN

hardkey

Grason-Stadler

GSI TympStar User manual Versions 1

Specifications and Main Features

Frequently Asked Questions

User Manual