GSI TympStar User manual Versions 1

Grason-Stadler

GSI® TympStar Versions 1 and 2

Middle-Ear Analyzer

Service Manual

Reference Instruction Manual 2000-0110, Rev3.0

Printed October, 2002

GSI

Grason-Stadler - A Division of VIASYS Healthcare			Grason-Stadler
5225 Verona Road, Building 2, Madison, WI 53711
TEL:[phone],FAX:[phone]

Title: GSI TympStar Versions 1 and 2

Middle-Ear Analyzer

Service Manual

Date:

October, 2002

Copyright © 2001 Grason-Stadler. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means without the prior written permission of Grason-Stadler. 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	Thirdprinting	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	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.
Electrical safety	CAUTION
	The GSI TympStar Version 1 and Version 2 instruments are
	IEC 601-1/CSA approved; consequently if any parts are re-
	placed during the repair of these units, only exact replace-
	ments should be made. Any alterations of the present elec-
	trical or mechanical construction or components will void
	these safety approvals.
CMOS handling	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

GSI TympStar Version 1 and Version 2 Service Manual

Contents - 1

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

1

General	The GSI TympStar Version 1and Version 2 Middle-Ear Analyzers are techni-
	cally 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 capa-
	bilities. It contains total capabilities for complete, manual or automatic diag-
	nostic 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 param-
	eter choices and the possible alterna-
	tives. Admittance and pressure
	indications are shown on the
	LCD along with a
	continuous digital
	readout.	Test sta-
	tus 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.

GSI TympStar Version 1 and Version 2 Service Manual

1 - 1

				Chapter 1
Version 1	Admittance (Y) may be measured with a probe tone frequency of 226 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)
	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 mea-
	surement results can be selected manually. A cur-
	sor is available in all test modes for calling out
	numeric positions on the X and Y
	axes.
Version 1 equipment	TympStar Version 1 options that can be
connections and	connected to the rear panel include RS232
options	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

Not used in TympStar

Version 1

1 - 2

Grason-Stadler

				Introduction
Version 2	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” measure-
	ments 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 in-
	put 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.
Version 2 equipment	TympStar options that can be connected to the rear panel include an external
connections and	stimulus source, an external Present control, RS232 serial communication, a
options	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	A combination of hardkeys and softkeys are used to select the test modes and
	parameters and to conduct tests.
Hardkeys and softkeys	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	A rotary pressure control is also provided to change or fine-tune pressure within the
control	ear canal.
Test modes and menu	Selecting a test mode by pressing a hardkey causes the required test screen to be
navigation	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
Tymp hardkey	displayed.

Tymp Diagnostic screen

Tymp parameter menu

GSI TympStar Version 1 and Version 2 Service Manual

1 - 5

First level

Second level

First level

Second level

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.

AUTO	P-RANGE	START			GRADIENT		EAR	MORE
SEQUENCE	daPa	daPa
	NORMAL WIDE -600 -400	-200	+200	+400	MORE TYMP WIDTH	RATIO OFF	RIGHT LEFT
					daPa	ml
	-500	-300	0	+300	MORE
					P-RATE		BASELINE	MORE
					daPa/s
					12.5 50	200 600/200	ON OFF

Default selection

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.

1 - 6

Grason-Stadler

Introduction

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

Sub-menu of

START daPa

Changing parameter	Settings can be changed for a selected parameter by pressing the desired softkey as
settings	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 diagrams	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.

GSI default param- GSI default parameters are circled on eter settings menu structure diagrams shown throughout the remainder of this

manual.

START daPa

-600 -400 -200 +200 +400 MORE

GSI default value

-500 -300 0 +300 MORE

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 1

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Grason-Stadler

Specifications 2

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: [phone]

Fax: [phone]

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

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			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
	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.
Probe signal	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

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		Specifications
Pneumatic System	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.)
Acoustic Reflex	Pure Tone Stimulus
Activating (Stimulus)	Frequencies for Contra phone and for Ipsi phone with time multiplexed
Signal	stimulus. See Table 3.
	FrequencyAccuracy: ±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.

GSI TympStar Version 1 and Version 2 Service Manual

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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

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	Specifications
Stimulus	Signal ON/OFF Ratio:	>70 dB
Presentation Control	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 Specifica-	Steady State Stimulus
tions of Stimulus	Initial Delay (elapsed time from present bar activation to 10% stimulus
Presentation	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

GSI TympStar Version 1 and Version 2 Service Manual

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	Chapter 2
Environmental	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 IEC60601-
	1 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)
Warm-UpTime	At room temperature; +15°C to +35°C:	10 Minutes
	At room temperature; below +15°C:	1 Hour

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	Specifications
Calibration Stability	All GSITympStar 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 instru-
	ment 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)
Connectors	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 VGAport for external monitor.

GSI TympStar Version 1 and Version 2 Service Manual

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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

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Grason-Stadler

	Specifications
SuppliedAccessories	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	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

Materials of manufacture

Calibration requirements

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

GSI recommends quarterly calibration checks for the GSI TympStar along with annual certification. ASHArequires 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.

GSI TympStar Version 1 and Version 2 Service Manual

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Chapter 2

Version 2 Specifications

Standards	The GSI TympStar Version 2 meets or exceeds the following standards and speci-
	fications 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: [phone]

Fax: [phone]

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.

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Grason-Stadler