Аудиометр ad 226 инструкция по эксплуатации

Related Manuals for Interacoustics ad226

Универсальный гибридный аудиометр AD 226 e для анализа слуха по костной и воздушной проводимости с надпороговыми тестами: SISI, ABLB, Stenger, Langenbeck , тест Бекеши, тест автоматического определения порогов слуха

AD 226 модификация E, диагностический аудиометр характеристики:

• Воздушная (125-8000 Гц, интенсивность до 120 дБ) проводимость
• Костная (250-8000 Гц, интенсивность до 80 дБ) проводимость
• Ручная и синхронная маскировка, а также маскировка узкополосным шумом
• Специальные тесты: SISI, ABLB, Stenger, Langenbeck , тест Бекеши, тест автоматического определения порогов слуха
• 2 USB разъема для подключения ПК, принтера, клавиатуры 
• Цветной ЖК дисплей на два уха 4,3″ разрешение 480х272
• Внутренняя память на 500 пациентов
• Питание от сети 220 В или 4 батареек АА
• Размер — 30*23*9 см
• Вес — 1,3 кг

Аудиометр поликлинический AD 226b Комплектация:

• Аудиометр поликлинический AD 226
• Головной телефон
• Костный телефон
• Кнопка ответа пациента
• Сетевой кабель
• Руководство по эксплуатации
• Программное обеспечение

Универсальный гибридный аудиометр AD 226 e для анализа слуха по костной и воздушной проводимости с надпороговыми тестами: SISI, ABLB, Stenger, Langenbeck , тест Бекеши, тест автоматического определения порогов слуха

AD 226 модификация E, диагностический аудиометр характеристики:

• Воздушная (125-8000 Гц, интенсивность до 120 дБ) проводимость
• Костная (250-8000 Гц, интенсивность до 80 дБ) проводимость
• Ручная и синхронная маскировка, а также маскировка узкополосным шумом
• Специальные тесты: SISI, ABLB, Stenger, Langenbeck , тест Бекеши, тест автоматического определения порогов слуха
• 2 USB разъема для подключения ПК, принтера, клавиатуры 
• Цветной ЖК дисплей на два уха 4,3″ разрешение 480х272
• Внутренняя память на 500 пациентов
• Питание от сети 220 В или 4 батареек АА
• Размер — 30*23*9 см
• Вес — 1,3 кг

Аудиометр поликлинический AD 226b Комплектация:

• Аудиометр поликлинический AD 226
• Головной телефон
• Костный телефон
• Кнопка ответа пациента
• Сетевой кабель
• Руководство по эксплуатации
• Программное обеспечение

Поликлинические (диагностические) аудиометры — это устройства, которые используются не только для анализа слуха по костной и воздушной проводимости за счет измерения порогов слышимости, но и для оценки качества речи, ее разборчивости. В аппаратах данной группы предусмотрен автоматический режим для определения порогов слуха.

Прибор Interacoustics AD 226E создан и произведен в Дании. В основе прибора положена схема передачи звука по различным средам (по воздушной и костной проводимости).

Универсальный аудиометр диагностический AD 226 работает по принципу гибридной технологии (true hybrid):

• возможность работать на устройстве в автономном режиме (без подключения к ПК)
• возможность работать в режиме подключения к компьютеру.

При этом вам доступны все преимущества аудиометра, подключенного к компьютеру (ПО Diagnostic Suite) : полноценные базы данных Noah, Otoaccess, интеграция с другими медицинскими протоколами.

Компактный размер позволяет с легкостью использовать данный аудиометр для выездных обследований.

Сравнение аудиометр диагностический AD 226 модификация B аудиометр диагностический AD 226 модификация E Интеракустикс:

Специальные тесты	AD 226 B	AD 226 E
SISI	нет	да
ABLB (Fowler)	да	да
Bekesy	нет	да
Stenger	да	да
Weber	только с PC Suite	только с PC Suite
Tone in noise / Langenbeck	нет	да
Auto threshold (HW)	да	да

Service Manual

Diagnostic Audiometer AD226

Part number 80671106

Valid from serial no. 746702

Contents

Contents ………………………………………………………………………………………………………………………………………………….1

General Technical Specifications ……………………………………………………………………………………………………………..2

Specification of input/output connections ……………………………………………………………………………………………..3

Calibration properties ………………………………………………………………………………………………………………………..4

Survey of reference values for pure tone audiometer calibration …………………………………………………………….4

Disassembly …………………………………………………………………………………………………………………………………………….6

Electrical Assembling Instrument ………………………………………………………………………………………………………..6

Schematics ………………………………………………………………………………………………………………………………………………7

Block Diagram ………………………………………………………………………………………………………………………………….7

Main board Diagram ………………………………………………………………………………………………………………………….8

Component Index …………………………………………………………………………………………………………………..13

Keys and Led’s Index ……………………………………………………………………………………………………………..14

Component Partlist…………………………………………………………………………………………………………………15

Connector Board A Diagram …………………………………………………………………………………………………………….18

Component Index and Partlist………………………………………………………………………………………………….19

Connection Board B Diagram……………………………………………………………………………………………………………20

Component Index and Partlist………………………………………………………………………………………………….21

Fuse PCB ………………………………………………………………………………………………………………………………………22

Calibration Procedure …………………………………………………………………………………………………………………………….23

Service, adjustment and repair………………………………………………………………………………………………………….23

Equipment for adjustment ……………………………………………………………………………………………………….23

Hardware Calibration……………………………………………………………………………………………………………………….23

Calibration of Attenuator in channel 1……………………………………………………………………………………….23

Calibration of Attenuator in channel 2……………………………………………………………………………………….24

LCD angle adjustment…………………………………………………………………………………………………………….25

Software Calibration ………………………………………………………………………………………………………………………..25

General Description ……………………………………………………………………………………………………………….25

Tone Calibration …………………………………………………………………………………………………………………….25

Narrow Band Calibration …………………………………………………………………………………………………………25

White Noise Calibration…………………………………………………………………………………………………………..26

Appendix A Technical Description of the RS232 Interface version 2.00 ……………………………………………………..1

General Specification ………………………………………………………………………………………………………………………..1

Control Wires……………………………………………………………………………………………………………………………………2

Communication…………………………………………………………………………………………………………………………………3

Audiological Information …………………………………………………………………………………………………………………….4

Test Results……………………………………………………………………………………………………………………………………..5

Controlling the AD226 ……………………………………………………………………………………………………………………….6

AD226 Status …………………………………………………………………………………………………………………………………..7

EEPROM Control ……………………………………………………………………………………………………………………………..9

Programming Tips ……………………………………………………………………………………………………………………9

AD226 OnLine ………………………………………………………………………………………………………………………………….9

Examples of Transmission ………………………………………………………………………………………………………..9

Window Routines in C++………………………………………………………………………………………………………………….10

Transmit Data from PC to Instrument ……………………………………………………………………………………….10

Receive Data from Instrument …………………………………………………………………………………………………11

Appendix B Setting of Set-up items ………………………………………………………………………………………………………….1

Introduction………………………………………………………………………………………………………………………………………1

Set-up Items …………………………………………………………………………………………………………………………………….1

Set-up item 3 CRC Check………………………………………………………………………………………………………2

Set-up item 8 Bekesy Deviation ………………………………………………………………………………………………3

Set-up item 13 Buzzer……………………………………………………………………………………………………………4

Set-up item 18 Bone Type ……………………………………………………………………………………………………..5

Set-up item 22 ABLB Pulse Time…………………………………………………………………………………………….6

Set-up item 27 dB Value ………………………………………………………………………………………………………..7

Set-up Item 32 OSHA Level……………………………………………………………………………………………………8

Appendix AD226 U Update News………………………………………………………………………………………………………………1

AD226 Service Manual 1

General Technical Specifications

Medical CE-mark:

The CE-mark indicates that Interacoustics A/S meets the requirements of Annex II of the Medical Device Directive 93/42/EEC.

Approval of the quality system is made by TÜV — identification no. 0123.

Standards:

Power:

Safety:

EMC:

IEC 60601-1, Class I, Type B

(using UPS400 external power supply)

IEC 60601-1-2

Audiometer:

IEC 60645-1/ANSI S3.6 , Type 3 Tone audiometer

UPS400 External power supply

Fuses:

See description in separate Service Manual

2xT1A + 1xT2A located on PCB

Operation environment: Temperature:

Rel. Humidity:

15 – 35  C

30 – 90%

Transport temperature::

-20-50°C

Storage temperature:

0-50°C

Warm up time:

3 minutes at room temperature (20  C).

Functions

Signal sources:

Inputs:

Outputs:

Patient

Communication:

Attenuator:

Tone Switch:

Tone presentation:

Auto Threshold:

Békésy:

Buzzer:

Special test types:

Tone:

Masking:

Pat. response

11 pure tone and warble test frequencies in the range of

125 – 8000Hz

Narrow band noise, in 11 bands.

White noise.

Connection for patient response switch. Response lamp will light when activated.

Connection for external power supply.

Power UPS400

Earphone Right /

Left:

Bone conductor:

Insert masking

Can be selected to be either standard earphones or insert phones by pressing shift Right/Left.

Masking in Right or Left earphone can be selected.

For use of CIR22.

phone

MTP10:

Printer:

RS232

Talk Forward:

Use of MTP10 as printer device

Laser printer with HP GL2 language

Ink jet or matrix printer using IBM mode (optional)

Desk jet printers using HP PCL L3 language (optional)

Input/output for computer communication. See separate section in Service Manual for programming details

Operator to patient communication. 10 – 110 dB continuously adjustable on the operation panel

-10 to 120 dB in 1 or 5 dB steps for tone and speech. The upper 20 dB is accessed by pressing the +20 dB button.

0 – 110 dB in 1 or 5 dB steps for masking noise.

Silent touch switch for soft presentation of signals. Tone lamp will light when activated.

Manual:

Reverse:

Tone is presented by activation of Tone Switch.

Tone is interrupted by activation of Tone Switch.

Pulse:

Single pulse or automatic pulsing with selectable on/off times of

250 – 5000ms.

Patient controlled Hughson-Westlake test according to ISO 8253-1 with automatic storing of the threshold values in the internal memory.

Patient response is open for 2 seconds after signal presentation.

2 out of 3 or 3 out of 5 correct responses can be selected.

Pure tone or narrow band stimulation. Fixed frequency. Continuous and pulsed tone.

If selected, it will indicate end of automatic test.

SISI:

Stenger:

With automatic score calculation (5 dB included for familiarisation).

Binaural pure tone or speech stimulation.

AD226 Service Manual 2

Store When activated, the displayed values for AC L/R, BC L/R are stored in the internal memory.

Stored values can be printed out on a printer if connected.

Locks Channel 2 attenuator to Channel 1 attenuator.

Synchronous

Masking:

Channel 2 options:

Output of Channel 2 can be set up to be either Narrow Band or White noise.

Frequencies and maximum intensities

conduction Masking

Hz dB HL

3A dB HL dB HL dB HL

Specification of input/output connections

Inputs

Power UPS400

Connector type

DIN, 5 pole

Electrical properties

Pin 1 and 2:

Pin 3:

Pin 4:

Pin 5:

Patient response Jack, 6.3mm stereo Handheld switch:

0V

+5V

-12V

+12V

Switches 5V to the logic input.

(The switch current is 40mA)

Outputs:

Bone conductor

Insert masking phone

Phones, Left/ Right Jack, 6.3mm mono Voltage:

Min. load impedance:

Up to 5.5V rms. by 10

Ω load

5

Ω

Jack, 6.3mm mono As for Phones,

Left/Right

Jack, 6.3mm mono Voltage:

Min. load impedance:

Up to 5.5V rms. by 100

Ω load

100

Ω

Data I/O:

RS232C

MTP10

Printer

9 pole Cannon

9 pole Cannon

25 pole Cannon

RS232 serial port for communication

Serial port

Parallel port

See appendix A in service manual for detailed information

For use of MTP10 as printing device.

Standard connection for laser printer, using

HPGL2 language.

By addition of a built-in adapter (IPA26), the range of printers are increased:

IPA26 is not longer available.

Desk jet printer, using HP PCL L3 language.

Matrix and Inc Jet printers using IBM mode.

Other electrical specifications:

Warble

5 Hz sine,

±5% modulation

AD226 Service Manual 3

Calibration properties

Calibrated Transducers:

Earphones:

Accuracies:

Telephonics TDH39 with a static force of 4.5N

±0.5N

Radioear B71 with a static force of 5.4N

±0.5N

E xAxR Tone 3A (Option)

CIR22 (Option) Insert masking phone:

Generally the instrument is made and calibrated to be within and better than the tolerances required in the specified audiometer standards:

Pure tone levels:

±3 dB for 125 – 4000Hz

±5 dB for 6000 – 8000Hz

Tone calibration standards and spectral properties:

Earphones Pure tone:

Narrow band noise:

Bone conductor

Insert phones

Pure tone:

Pure tone:

Narrow band noise:

ISO 389-1/ ANSI S3.6 for TDH39.

ISO 389-1 / ANSI S3.6 + ISO 389-4 values

IEC 60645-1, Narrow band noise

SPL

IEC 60645-1, White noise

ISO 389-3 / ANSI S3.6. Valid for placement on the human mastoid

ISO 389-2

ISO 389-2+ ISO 389-4 values

IEC 60645-1, Narrow band noise, electrically measured.

SPL

IEC 60645-1, White noise, electrically measured.

Insert masking phone Narrow band noise: ISO 389-2 + ISO 389-4 values

IEC 60645-1, Narrow-band noise, electrically measured.

(TDH39)

[Hz] [dB re. 20

µPa]

ANSI S3.6

(TDH39)

[dB re. 20

µPa]

ISO 389-4

(ISO 8798)

(NB masking)

[dB re. 20

µPa]

SPL

IEC 60645-1, White noise, electrically measured.

Survey of reference values for pure tone audiometer calibration

ISO 389-3

(ISO 7566)

(BC)

ANSI S3.6

(BC)

ISO 389-2

(Insert)

[dB re. 1µN] [dB re. 1µN] [dB re. 20

µPa]

ISO 389-7

Free field

(FF)

[dB re. 20

µPa]

ISO 389-7

Diffuse-field

(FF)

[dB re. 20

µPa]

125

250

500

750

45,0 45 4 26 22,0 22,0

25,5 25,5 4 67 67 14 11,0 11,0

11,5 11,5 4 58 58 5,5 4,0 3,5

1000

1500

2000

3000

4000

6000

8000

15,5 15,5 5 40 2 2,5 -0,5

Coupler types used by calibration

− TDH39 is calibrated using a 6cc acoustic coupler made in accordance to IEC 303

− Insert phones are calibrated using a 2cc acoustic coupler made in accordance to IEC 126

− Bone Conductor is calibrated using a mechanical coupler made in accordance to IEC 373

AD226 Service Manual 4

General properties for earphones

Sound attenuation values for earphones

Frequency Attenuation

MX41/AR or PN 51 cushion

[Hz] [dB] [dB]

125 3 32.5

160 4 —

200 5 —

250 5 36

315 5 —

400 6 —

500 7 37.5

630 9

750 —

—

—

800 11 —

1000 15 36.5

1250 18 —

1500 —

1600 21

—

—

2000 26 33

2500 28

3000 —

—

—

3150 31 —

4000 32 39.5

5000 29

6000 —

6300 26

—

—

—

8000 24 42.5

General about Specifications

Interacoustics continuously strive to improve the products and their performance. Therefore the specifications can be subject to change without notice.

The performance and specifications of the instrument can only be guarantied if it is subject to a technical maintenance at least once a year. This should be made by a workshop, authorised by Interacoustics.

Questions about representatives and products may be sent to:

Interacoustics A/S Phone: +45 63713555

DK 5610 Assens email: [email protected]

AD226 Service Manual 5

Disassembly

Electrical Assembling Instrument

I06013601

AD226 Service Manual 6

Schematics

Block Diagram

DSP

BOOT

EPROM

Talk Forward

DSP

2186

STEREO

CODEC

PCM3001

DUAL DAC

AD7249

DUAL PORT

RAM

12KHz

LPF

12KHz

LPF

RS232

MTP10

PRINTER

PARALLEL

PRINTER

0 — 120dB

ATT.

0 — 120dB

ATT.

AA_X X=CHANNEL No.

3 2 1 0

0 0 0 0 -20dB

0 0 0 1 — 0dB

0 0 1 0 — 5dB

0 1 0 0 -10dB

1 0 0 0 -15dB

0 — 20dB

FIX ATT.

AA3_1

AA2_1

AA0_1

AA1_1

0 — 20dB

FIX ATT.

AA3_2

AA2_2

AA0_2

AA1_2

+20dB

CH1

+20dB_1

+20dB

CH2

+20dB_2

0 S X X=CHANNEL N0.

C B A

0 0 0 Left

0 0 1 Right

0 1 0 Bone

0 1 1 Insert Masking

1 0 0 FF1

1 0 1 FF2

1 1 0

1 1 1

OUTPUT

SWITCH

CH1

OS1C OS1A

OS1B

IC61

OUTPUT

SWITCH

CH2

OS2C OS2A

OS2B

EPROM EEPROM

CPU

Z180

5450

KEYBOARD

LIGHT

Brightness

Control

KEYBOARD TONE SWITCH

Pat. Response

VDD

Orange

GND

Green

VDD

Tone On

LCD

Angel Adjust

Organization

Title

Interacoustics a/s

AD226 Blockdiagram

Document Number

Sheet

Date xd bl 0005 00001

1 of 1 Rev MBA

Wednesday, April 12, 2000

Page

Reset

Left

Right

Bone

Insert

Masking

.

AD226 Service Manual 7

VDD

R16

10K

VDD VDD c3 c7 c5 a1 a0 c2 d4 d5 d6 d7 d0 d1 d2 d3 c1

21

22

1

44

43

42

3

2

27

28

26

4

39

40

41

5

7

29

CE

RD

IORQ

M1

C/D

B/A

CLK

6

12

24

25

NC

NC

NC

NC

D0

D1

D2

D3

D4

D5

D6

D7

INT

IEI

IEO

ADDR.

44-47

17

16

15

14

11

10

9

8

20

18

31

32

33

34

35

36

37

38

23

19

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

ARDY

ASTB

PB0

PB1

PB2

PB3

PB4

PB5

PB6

PB7

BRDY

BSTB

VDD

VDD

VDD

VDD

VSS

30

13

GND

AA0_1 Page4

AA1_1 Page4

AA2_1 Page4

AA3_1 Page4

AA0_2 Page4

AA1_2 Page4

AA2_2 Page4

AA3_2 Page4

OS1A Page5

OS1B Page5

OS1C Page5

OS2A Page5

OS2B Page5

OS2C Page5

TONE Page2

PAT.RESP. Page2

VDD

5 X 10K0

X1

12.288MHz

GND

Page2

+

C3

VDD

7

2

SENSE

RESIN

VDD

8

3

CT

1

REF

RES

RES

GND

4

5

6

GND

VDD c8 c7 c4 c3 c1

GND c0 c2 c0 c1 c3 c4 c5 c6 c7

VDD

R3

10K

TSWCLK

24KHz

13

12

2

4

14

15

6

5

9

7

3

1

Q7

Q8

Q9

Q10

Q11

Q12

Q1

Q2

Q3

Q4

Q5

Q6

CLK

RST

10

11

VDD

16

VSS

8

GND c2

VDD

COM1

Page5

Page5

Page5

GND

Page5

TXA0

RXA0

RTS0

CTS0

Printer

TXA1

RXA1 c8

GND GND

GND

55

57

52

54

51

53

56

48

49

45

46

47

50

58

59

8

9

10

11

12

68

67

66

65

63

62

60

5

61

13

7

6

64

3

4

XTAL

EXTAL

RESET

NMI

INT0

INT1

INT2

CLK

RD

WR

M1

MREQ

IORQ

HALT

WAIT

BUSREQ

BUSACK

RFSH

ST

E

TXA0

RXA0

RTS0

CTS0

DCD0

CKA0/DREQ0

DREQ1

TEND1

CKA1/TEND0

TXA1

RXA1

RXS/CTS1

TXS

CKS

TEST

A8

A9

A10

A11

A12

A13

A14

A15

A16

A17

A0

A1

A2

A3

A4

A5

A6

A7

A18/TOUT

33

A19

35

22

23

24

25

26

27

28

29

30

31

32

14

15

16

17

19

20

21 a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 a17 a18 a19

D0

D1

D2

D3

D4

D5

D6

D7

VCC

VSS

VSS

VSS

VSS

34

1

2

18

36

41

42

43

44

37

38

39

40 d0 d1 d2 d3 d4 d5 d6 d7

GND

POWER SUPPLY CONNECTIONS

Digital

Supply

Analog

Supply

VDD = +5V

GND = 0V

VDD1 = +12V

VDDA = +5V

GND = 0V

VEE1 = -12V

VDD d4 d5 d6 d7 d0 d1 d2 d3 c1 c3 c7 c5 a1 a0 c2

6

12

24

25

CE

RD

IORQ

M1

C/D

B/A

CLK

NC

NC

NC

NC

D0

D1

D2

D3

D4

D5

D6

D7

INT

IEI

IEO

4

39

40

41

5

7

29

21

22

1

44

43

42

3

2

27

28

26

ADDR.

48-4B

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

ARDY

ASTB

PB0

PB1

PB2

PB3

PB4

PB5

PB6

PB7

BRDY

BSTB

31

32

33

34

35

36

37

38

23

19

17

16

15

14

11

10

9

8

20

18

VDD

VSS

30

13

VDD ee0 ee1 ee2 ee3

VDD

VDD dB1A Page2 dB1B Page2

LCLK Page2

SDATA Page2 dB2A Page2 dB2B Page2

GND d[0..7] c[0..8] a[0..19]

VDD a2 a3 a4 a6 a5 c7 a12 a13 a14 a15 a16 a17 a18 a19 c6

VDD

R9

301

3

2

7

4

1

5

6

15

13

14

A0

A1

A2

A3

A4

A5

A6

A7

CE1

CE2

O1

O2

O3

O4

VDD

12

11

10

9

16

GND

8

VDD

GND

1

16

8

6

2

3

4

5

A

B

C

VDD

VSS

G1

G2A

G2B

Y0

Y1

Y2

Y3

Y4

Y5

Y6

Y7

15

9

7

14

13

12

11

10

GND

GND ee[0..3] d0 d1 d2 d3 d4 d5 d6 d7 c1 c3 c7 c5 a1 a0 c2

6

12

24

25

CE

RD

IORQ

M1

C/D

B/A

CLK

NC

NC

NC

NC

D0

D1

D2

D3

D4

D5

D6

D7

INT

IEI

IEO

4

39

40

41

5

7

29

21

22

1

44

43

42

3

2

27

28

26

ADDR.

4C-4F

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

ARDY

ASTB

PB0

PB1

PB2

PB3

PB4

PB5

PB6

PB7

BRDY

BSTB

31

32

33

34

35

36

37

38

23

19

17

16

15

14

11

10

9

8

20

18

VDD

VSS

30

13

VDD

VDD

VDD

GND

TSW Page2

SHIFT Page2

+20dB_2 Page5

+20dB_1 Page5

ROW0 Page2

ROW1 Page2

ROW2

ROW3 Page2

COL0 Page2

COL1 Page2

COL2 Page2

COL3 Page2

COL4 Page2

COL5 Page2

COL6 Page2

COL7 Page2

VDD

R10

301

GND

VDD

R11

301

CSLCD

Page2

VDD ee0

GND a18

R13

0

VDD a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 a17 a0 a1 a2 a3 a4 a5 c3

VDD ee0 ee1 ee2 ee3

1

2

3

4

CS

SK

DI

DO

VCC

NC

NC

GND

8

7

6

5

12

11

10

9

8

7

6

5

28

29

3

2

30

27

26

23

25

4

31

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16

A17

A18

GND

O0

O1

O2

O3

O4

O5

O6

O7

13

14

15

17

18

19

20

21 d0 d1 d2 d3 d4 d5 d6 d7

VDD

22

24

1

CE

OE

VPP

VCC

32

GND

16

GND

0000-CFFF d0 d1 d2 d3 d4 d5 d6 d7 c1 c3 c7 c5 a1 a0 c2

21

22

1

44

43

42

3

2

27

28

26

4

39

40

41

5

7

29

CE

RD

IORQ

M1

C/D

B/A

CLK

6

12

24

25

NC

NC

NC

NC

D0

D1

D2

D3

D4

D5

D6

D7

INT

IEI

IEO

ADDR.

50-53

VDD

GND

VEE1

VDD1

7

8

5

6

3

4

1

2

16

15

14

13

12

11

10

9 d0 d1 d2 d3 a0

CSAUTO c4 c3 wr rd d7 d6 d5 d4 a6 a7 a8 a9 a10 a11 a12 a0 a1 a2 a3 a4 a5 a14

A4

A5

A6

A7

A8

A0

A1

A2

A3

A9

A10

A11

A12

1

NC

10

9

8

5

4

7

6

3

25

24

21

23

2

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

I/O8

11

12

13

15

16

17

18

19

VDD a13

E000-FFFF

R14 0

R15 NP

CE2

CE1

WE

OE

26

20

27

22 c4 c3

VCC

GND

28

14

GND d0 d1 d2 d3 d4 d5 d6 d7

VDD

17

16

15

14

11

10

9

8

20

18

31

32

33

34

35

36

37

38

23

19

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

ARDY

ASTB

PB0

PB1

PB2

PB3

PB4

PB5

PB6

PB7

BRDY

BSTB

VDD

VDD

VSS

30

13

GND

GND

DATA[0..7]

Page2,3

CNTRL.[0..8]

Page3,5

D000-DFFF

CSDSP Page3

IC17,51

ADDR.[0..19]

Page2,3

GND

RC1

VDD1 VDD

PD0

PD1

PD2

PD3

PD4

PD5

PD6

PD7

RC3,16

PSTROBE

BUSY

PE

-PERR

PB4 Page2

PB5 Page2

DSP dc1 Page3

VDD

VDD

VEE1 GND GND

091098

030506

Mainboard 071

69011001

MBA

PSC

IBP

HBJ

Page 8

SHIFT

Page1

TSWCLK

Page1

VDD

R18

4K75

1

SHIFT

2

GND

Page1

Page1

Page1

Page1

ROW0

ROW1

ROW2

ROW3

Page1

Page1

Page1

Page1

Page1

Page1

Page1

Page1

COL7

COL6

COL5

COL4

COL3

COL2

COL1

COL0

POWER SUPPLY CONNECTIONS

Digital

Supply

VDD = +5V

GND = 0V

Analog

Supply

VDD1 = +12V

VDDA = +5V

GND = 0V

VEE1 = -12V

VDD1

GND

GND

GND

11

13

5

9

VDD

R19

4K75

1 2

TALK FWD.

GND

6

IC14C

74HC04

8

IC14D

74HC04

10

IC14E

74HC04

12

IC14F

74HC04

VDD

R20

4K75

1

STORE

2

10p

5%

Touch Switch

TONE

Page1

GND

VDD

Kulfilm

Modstand

VDD

R21

4K75

Patient response

1

HZ. DEC.

2

GND

VDD

1

2

GND

1

GND

2

IC14A

74HC04

5

6

3

4

1

2

VDD

R22

4K75

1 2

AUTO THR.

VDD

R23

4K75

1

SYNCH

2

VDD

R24

4K75

2 1

EXT.RANGE

VDD

R25

4K75

2

LEFT

1

VDD

R26

4K75

2

RIGHT

1

VDD

GND

4

HZ. INC.

3

2

1dB/5dB

1

1 2 dB DEC.CH2

2

MAN/REV

1

4 3 dB INC.CH2

2

PULSE

1

1 2 dB DEC.CH1

2

BONE L/R

1

4 dB INC.CH1

3

BONE L

1dB

MAN.

SINGLE PULSE

BONE R

AUT. THR.

SYNCH.

EXT.RANG.

LEFT

RIGHT

VDD

12

13

14

15

16

9

10

7

8

11

1

23

3

4

5

6

17

18

19

20

21

22

NC

NC

OUT17

OUT16

OUT15

OUT14

OUT13

OUT12

OUT11

OUT10

OUT09

NC

OUT08

OUT07

OUT06

OUT05

OUT04

OUT03

OUT02

OUT01

BC

VDD

OUT29

OUT30

OUT31

OUT32

OUT33

OUT34

ENABLE

DATA

CLK

VSS

OUT18

OUT19

OUT20

OUT21

OUT22

OUT23

OUT24

OUT25

OUT26

OUT27

NC

OUT28

38

37

36

35

34

33

32

31

30

29

44

43

42

41

40

39

28

27

26

25

24

2

GND

VDD

VDD

MULTI PULSE

REV.

5dB

SDATA Page1

LCLK Page1

VDD

GND GND

Page1

Page1

Page1

Page1 dB2A dB2B dB1A dB1B

VDD

GND

15

2

13

4

11

6

16

AOUT

BOUT

COUT

DOUT

EOUT

FOUT

VDD

8

GND

AIN

BIN

CIN

DIN

EIN

FIN

OSCI

1

14

3

12

5

10

7

OSCO

9

GND

GND

1

3

2

CH2 GND

1

3

2

CH1 GND

VDD1 VDD

J2

NP

J1

0

GND

3

+

C45

+

C26

11

GND

8

9

IC13C

4070

10

TSW Page1

GND

4

12

13

GND

GND

IC4,10

Page1 CSLCD

Page1 ADDR.[0..19]

Page1

PAT.RESP.

VDD

GND

GND

VDD VDD

GND

Green

Pat. Response

R42 82R5

R43 82R5

Orange

GND

VEE1

GND

6

7

2

3

IN

IN

IN

IN

OUT

1

VDD

+ +

VEE-ADJ

BRIGHTNESS

CONTROL

1

IN

4

SD

GND d0 d2 d4 d6

GND a1

GND

VDD

OUT

2

ERR

5

+5V a[0..19]

+

C161

PD0

PD1

PD3

GND

PD6

BUSY

PB5

Page1

GND

LCD DISPLAY

1

4

5

2

3

6

7

8

TO DISPLAY

16

15

14

13

12

11

10

9 d1 d3 d5 d7

VDD a0

VDD

Metalfilm

Modstand

7

8

5

6

3

4

1

2

Ekstern Printer

16

15

14

13

12

11

10

9

PSTROBE

-PERR

PD2

PD4

PD5

PD7

PE

PB4 Page1

GND

VDD

VEE-ADJ a0 a1

CE LCD d0 d1 d2 d3 d4 d5 d6 d7

DISPLAY CONNECTION

RC1

13

5

12

6

11

7

10

1

16

2

15

3

14

4

8

LCM-523

1

4

5

2

3

6

7

8

9

10

11

12

13

14

VSS

VDD

V 0

R S

R/W

E

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

LCD BACKLIGHT

9

Tone CH1

Page1,3 DATA[0..7]

GND d[0..7]

3 4

IC14B

74HC04

091098

030506

Mainboard 071

69011001

MBA

PSC

IBP

HBJ

Page 9

VDD

GND

VDD

GND

GND

GND

VDD

VDD

DSP dc1

Page1 dc2 dc1 dc5 dc6 dc4 dc3 dc1 dc1 dc2 dc5 dc6

GND

L1 — L6

30

29

27

26

88

89

93

94

91

96

54

95

24

21

22

14

13

16

44

52

25

23

19

20

XTAL

CLKIN

CLKOUT

RESET

BR

BG

BGH

IOMS

BMS

DMS

CMS

PMS

WR

RD

IRQ2+PF7

IRQL1+PF6

IRQL0+PF5

IRQE+PF4

PF3

PF2[MODE C]

PF1[MODE B]

PF0[MODE A]

PWD

PWDACK

DSP CONTROL BUS

C35 100n

C36 100n

C37 100n

C49 100n

C50 100n

C51 100n

GND

GND dc[0..6]

ADDR.[0..19]

Page1

DATA[0..7]

Page1,2

CSDSP

Page1

CNTRL.[0..8]

Page1 a[0..19] d[0..7] c[0..8] c0 reset d4 d5 d6 d7 d0 d1 d2 d3 a5 a6 a7 a8 a9 a0 a1 a2 a3 a4 c4 wr c3 rd

VDD

A0R

A1R

A2R

A3R

A4R

A5R

A6R

A7R

A8R

A9R

D0R

D1R

D2R

D3R

D4R

D5R

D6R

D7R

45

44

43

42

41

40

39

38

37

36

27

28

29

30

31

32

33

34

51

50

49

48

46

CSR

R/WR

BUSYR

INTR

OER

A0L

A1L

A2L

A3L

A4L

A5L

A6L

A7L

A8L

A9L

D0L

D1L

D2L

D3L

D4L

D5L

D6L

D7L

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

CSL

R/WL

BUSYL

INTL

OEL

1

4

6

2

3 dd8 dd9 dd10 dd11 dd12 dd13 dd14 dd15 da0 da1 da2 da3 da4 da5 da6 da7 da8 da9 d_dms d_wr

IRQ2 d_rd

52

26

VDD

GND dc6 dc4 dc1 dc3

GND

POWER SUPPLY CONNECTIONS

Digital

Supply

Analog

Supply

VDD = +5V

GND = 0V

VDD1 = +12V

VDDA = +5V

GND = 0V

VEE1 = -12V

D15

D14

D13

D12

D11

D10

D9

D8

D23

D22

D21

D20

D19

D18

D17

D16

76

75

74

73

72

70

69

68

65

84

83

82

81

79

78

77

FL0

FL1

FL2

87

86

85 dd23 dd22 dd21 dd20 dd19 dd18 dd17 dd16 dd15 dd14 dd13 dd12 dd11 dd10 dd9 dd8 dd23 dd22 dd21 dd20

GND

GND

GND

GND dd19 dd18 dd17 dd16 da0 da1 da2 da3 da4 da5 da6 da7 da8 da9 da10 da11 da12 da13 dd16 dd17

GND dc5 dc3

VDD

VDD

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16

A0

A1

A2

A3

A4

A5

A6

27

26

6

5

23

25

4

28

29

3

2

12

11

10

9

8

7

22

24

31

1

CE

OE

PGM

VPP

30

NC

O0

O1

O2

O3

O4

O5

O6

O7

13

14

15

17

18

19

20

21

VCC

32

VDD

GND

16

GND dd8 dd9 dd10 dd11 dd12 dd13 dd14 dd15

GND

GND

GND

GND

GND

VDD

VDD

GND

GND

10

11

16

8

CLK

RST

VDD

GND

Q8

Q9

Q10

Q11

Q12

Q1

Q2

Q3

Q4

Q5

Q6

Q7

4

13

12

14

15

1

6

5

9

7

3

2

11

GND

10

GND

IC46E

74HC04

9 8

GND

GND

1u 10%

1

10

VinL

Cin+L

4u7 20%

9

4u7 20%

4

5

7

Cin-L

VrefL

VrefR

Cin+R

8

6

Cin-R

VinR

16

17

18

19

28

LRCIN

BCKIN

DIN

DOUT

RSTB

27

26

25

FMT0

FMT1

FMT2

GND da[0..13]

DSP ADDRESS BUS

VDD1

DSP DATA BUS

MIC. PRE.AMP.

+ C40

N3 NP

MIC.

N4 NP

GND

R65

4K75

GND GND

GND

1 dd[8..23]

3

2

2

IC46A

74HC04

VDD1

6

GND

C44 10n

GND

VEE1 GND

GND GND

D26

LL4148

VoutL

VoutR

VCOM

15

12

11

VDD

23

DGND

24

VccADC

2

GNDADC

VccDAC

3

14

GNDDAC

13

GND

GND

GND

GND

GND

3

2

1

L_OUT

Page4

R_OUT

Page4

GND

VREF DSP

VDDA

GND c0 reset

VDD1

GND

3 4

IC46B

74HC04

VDD1

7

GND

VREF DAC

5 6

IC46C

74HC04

5

6

GND

13 12

IC46F

74HC04

VEE1 GND

+-5V

R74 NP

+

C65

GND

GND

1

2

REFOUT

REFIN

RA

16

VOUTA

14

11

9

12

SCLK

SDIN

SYNC

6

10

7

CLR

LDAC

BIN/COMP

VOUTB

4

RB

3

13

VDD

8

15

DGND

VSS

AGND

5

GND

GND

+

C67

0-10V

R71 0

GND

0-5V

R72 0

DCATT_1

Page4

DCATT_2

Page4

VEE1

091098

030506

Mainboard 071

69011001

MBA

PSC

IBP

HBJ

Page 10

VDD1

Page3

L_OUT R75

10K

VREF DSP

R76

10K

2

3

GND

1

GND

VEE1

GND

GND

R80

5K36

GND

6

5

7

Page3

R_OUT

VREF DSP

VDD1

GND

R99

4K99

2

3

1

GND

VEE1

GND GND

GND

6

5

7

DCATT_1

Page3

VDD1

R134

21K

GND

GND

2

3

1

GND

VEE1 GND

GND

6

5

100p 1%

VREF DAC

+

C73

Offset

P3 5K

GND

Gain

P4 1K

7

+ +

GND

GND

6

5

GND

7

DCATT_2

Page3

VDD1

GND

R158

21K

GND

2

3

GND

1

VEE1 GND

GND

6

5

100p 1%

VREF DAC

+

C93

Offset

P5 5K

GND

Gain

7

+ +

GND

GND

6

5

7

GND

1u 10%

VDD1

GND

2

3

GND

1

VEE1

GND

VDD1

GND

1

GND

GND

VDD1

VEE1 GND

VDD1

6

+ +

Page1

AA0_1

0dB

R90 1K1

Page1

AA1_1

-5dB

R91 2K21

Page1

AA2_1

-10dB

R92 4K75

Page1

AA3_1

-15dB

R93 13K3

15

11

SW/C

SW/I

5

1

SW/C

SW/I

6

10

SW/C

SW/I

16

SW/C

20

SW/I

-20dB

R94 10K5

+

C82

SW/O

13

SW/O

3

SW/O

8

SW/O

18

GND

2

3

VDD1

100p

GND

6

1%

VEE1 GND

8

VDD1

GND

2

3

GND GND

GND

VEE1

GND

VEE1

VEE1

GND

47p 5%

VDD1

GND

2

3

1

GND

VEE1

GND

VDD1

GND

1

1u

10%

1u 10%

GND VEE1

GND

GND

GND

VDD1

VEE1

IC30A

SSM2404

GND

VDD1

8

VDD1

GND

2

3

GND

VEE1

6

VEE1

GND

47p 5%

+ +

Page1

AA0_2

0dB

R112 1K1

Page1

AA1_2

-5dB

R113 2K21

Page1

AA2_2

-10dB

R114 4K75

Page1

AA3_2

-15dB

R115 13K3

-20dB

R116 10K5

+

C102

15

11

SW/C

SW/I

5

1

SW/C

SW/I

6

10

SW/C

SW/I

16

20

SW/C

SW/I

SW/O

13

SW/O

3

SW/O

8

SW/O

18

GND

2

3

VDD1

100p

GND

6

1%

VEE1 GND

ATOUT_1

Page5

ATOUT_2

Page5

POWER SUPPLY CONNECTIONS

Digital

Supply VDD = +5V

GND = 0V

Analog

Supply

VDD1 = +12V

VDDA = +5V

GND = 0V

VEE1 = -12V

091098

030506

Mainboard 071

69011001

MBA

PSC

IBP

HBJ

Page 11

VDD1

LEFT

ATOUT_1

Page4

ATOUT_2

Page4

+20dB

Page1

+20dB_1

Page1

+20dB_2

OUTPUT SWITCH

15

SW/C

13

SW/I

+20dB CH1

GND

2

4

SW/C

SW/I

+20dB CH2

SW/O

11

VDD1

GND

VDDA

GND

CH1

3

X

16

8

7

VDD

VSS

VEE

2

4

1

5

13

14

15

12

6

11

10

9

X0

X1

X2

X3

X4

X5

X6

X7

INH

A

B

C

Page1 OS1C

Page1 OS1B

Page1 OS1A

VEE1 GND

SW/O

6

VDDA

GND

CH2

3

X

16

8

VDD

VSS

7

VEE

6

11

10

9

13

14

1

5

15

12

2

4

X0

X1

X2

X3

X4

X5

X6

X7

INH

A

B

C

Page1 OS2C

Page1 OS2B

Page1 OS2A

GND

GND

TXA1

RXA1

VDD

R147

10K

11

10

T1I

T2I

12

9

R1O

R2O

1u 10%

1

C1+

3

C1-

1u 10%

4

C2+

5

C2-

T1O

T2O

R1I

R2I

14

7

13

8

GND

VDD

V+

16

2

C147 1u 10%

V-

GND

6

C148 1u 10%

15

GND GND

4

3

2

1

Printer

VDD

VDD VDD1 GND

VDD1

GND

From

External

Power

Supply

GND

6

5

4

3

2

1

VEE1

VDD1

GND

VEE1

VDD

GND

Page1

Page1

Page1

Page1

TXA0

RTS0

RXA0

CTS0

GND

POWER SUPPLY CONNECTIONS

Digital

Supply VDD = +5V

GND = 0V

Analog

Supply

VDD1 = +12V

VDDA = +5V

GND = 0V

VEE1 = -12V

VEE1

VDD1

22p 5%

2

3

GND

GND_LEFT

VEE1

GND

6

GND

GND

GND

VEE1

GND

VDD

3

1

2

3

1

2

4

LEFT OUT

4

RIGHT OUT

VDD

VDD1

100p 1%

22p 5%

2

3

GND

GND_RIGHT

VEE1

GND

6

GND

VDD1

RIGHT

GND

GND

VEE1

GND

R130

10

VDD1

11

10

T1I

T2I

12

9

R1O

R2O

1u 10%

1

C1+

3

C1-

1u 10%

4

C2+

5

C2-

T1O

T2O

R1I

R2I

14

7

13

8

VDD

GND

VDD

V+

16

2

C152 1u 10%

V-

GND

6

15

C153 1u 10%

GND GND

VDD

GND

10

7

6

5

4

9

8

3

2

1

To PC

DSR

RXD

TXD

CTS

DTR

VDD

GND

RESET

c0 c[0..8]

R109 4K75

+

C100

CNTRL.[0..8]

Page1

GND

BONE

100p 1%

22p 5%

VDD1

2

3

GND

GND_BONE

VEE1

GND

6

GND

VDD1

100p 1%

VEE1

GND

GND

GND

BONE OUT

INSERT

VDD1

2

3

GND

GND_INSERT

VEE1

GND

6

GND

INS OUT

VDD1

8

IN OUT

1

VDDA

+

C144

GND

GND GND

GND

GND

GND

Chassis

Chassis

Chassis

GND_LEFT

GND_RIGHT

GND_BONE

GND_INSERT

Mounted on the jacksocket. ( rearplate )

6

5

4

3

2

8

7

1

4 x 100pF

Chassis

091098

030506

Mainboard 071

69011001

MBA

PSC

IBP

HBJ

Page 12

Component Index

AD226 Service Manual 13

Component Partlist

Assembled Board PCA 51001902

Quantity Part Reference Part Number Value Tolerance

4 A3 A4 A5 A6

1 A9

1 A10

1 A11

1 A12

35500201 pertinaxskive

3 A15 A16 A17

1 A18

4

3

86

36307201 tast_2

A21 RC1 RC2 RC3

C3 C73 C93

C4 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17

C18 C19 C25 C28 C29 C30 C32 C35 C36 C37 C38 C39

C42 C43 C49 C50 C51 C53 C54 C62 C63 C64 C66 C68

C69 C76 C77 C78 C79 C80 C83 C84 C86 C87 C88 C89

C96 C97 C98 C99 C103 C104 C106 C107 C109 C110

C111 C113 C119 C120 C126 C127 C135 C136 C138 C139

C140 C141 C142 C155 C156 C159 C160 C171 C172 C173

C174 C179 C180 C181 C182 C183 C184

75801301 DIP16

61420301 5%

61000301 68u 20%

61401101 100n 10%

1 C5

9 C20 C21 C27 C44 C70 C90 C143 C169 C175

1 C22

9 C23 C24 C33 C34 C47 C48 C115 C122 C131

1 C26

11

61400101

61401001

61400501

10n

61415301 5%

22p

61002701

C31 C45 C52 C65 C67 C82 C100 C102 C144 C162 C163 61000201 10u

10%

5%

5%

20%

20%

1 C40

13 C41 C56 C57 C58 C116 C117 C118 C123 C124 C125

C132 C133 C134

17 C46 C72 C74 C92 C94 C128 C129 C145 C146 C147 C148

C149 C150 C151 C152 C153 C154

61003001 20%

61401201 220n 20%

61401601 1u 10%

7

14

C60 C61 C75 C95 C108 C112 C161

C71 C85 C91 C105 C114 C121 C130 C137 C157 C164

C165 C166 C167 C177

61401501 5%

61000501 4u7

61400201 100p

20%

1%

1 C158

4 C168 C170 C176 C178

1 D1

13 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14

6

4

D15 D16 D17 D25 D26 D31

D18 D19 D20 D21

1 D24

1 HF1

61407901 5%

61400901 10%

61401801 1n 1%

61700101

71700101

61700201

LED

LL4148

71700301 LED

71700201

61700501

61700301

Earthgnd

AD226 Service Manual 15

Keys and Led’s Index

AD226 Service Manual 14

Quantity Part Reference

1 HF3

1 HF5

1 IC1

4 IC10 IC11 IC9 IC42

1 IC12

1 IC13

Part Number Value Tolerance

Earthgnd

Earthgnd

62002601 Z84C20

62000301

1 IC15

1 IC16

1 IC17

9 IC18 IC26 IC31 IC43 IC44 IC50 IC51 IC52 IC53

1 IC19

7 IC20 IC22 IC23 IC27 IC28 IC47 IC48

1 IC21

62031601

62000701

OP27

OP275

1 IC3

1 IC32

1 IC4

1 IC5

1 IC6

1 IC7

1 IC8 62008801

62001601

1 IC41

8 J1 R13 R14 R54 R71 R72 R162 R163

8 L1 L2 L3 L4 L5 L6 L7 L8

1 LS1

11

60400101

60204701

MP1 MP2 MP3 MP4 MP5 MP6 MP7 MP8 MP9 MP10 MP11 74000101

0

0

MP

1%

1%

1 MX2

1 MX3

1 MX5

1 P1

1 P2

28

6

R1 R3 R4 R5 R6 R7 R8 R16 R28 R31 R32 R39 R40 R41

R49 R50 R51 R52 R66 R75 R76 R95 R97 R98 R117 R147

R152 R153

R2 R9 R10 R11 R48 R151

75800201

75801101

75800601

75810901

73400101

73400201

63403101

60400201 10K 1%

60401401 301

60401101 4K75

1%

1%

1% 16 R18 R19 R20 R21 R22 R23 R24 R25 R26 R64 R65 R92

R109 R114 R154 R155

3

3

3

R27 R53 R61

R29 R30 R47

R33 R34 R35

1 R36

60401801

60401701

60402501

200

100K

47K5

1%

1%

1%

70100101 5%

60402601 1%

60425201 1%

60402801 1%

AD226 Service Manual 16

3

4

5

5

4

Quantity Part Reference

1 R46

14 R56 R57 R58 R59 R60 R63 R68 R96 R118 R121 R124

R131 R132 R157

1 R62

4 R67 R127 R130 R144

4

4

R77 R78 R99 R100

R79 R80 R101 R102

R83 R105 R125 R128 R142

R86 R89 R108 R111

R126 R129 R143

R134 R135 R146 R158

R136 R138 R140 R141 R156

1 R145

Part Number Value Tolerance

70106101 5%

60403601 1K 1%

60420301 1%

60401301

60403001

60403101

10

4K99

5K36

1%

1%

1%

60403201 1%

60403301 1%

60400701 3K01 1%

60403401 1%

60402401 18K2 1%

60403501 1%

60402701 1%

60403701 1%

60403801 1%

60403901 1%

60404001 1%

60400801 1%

60401601 1%

60401201 100 1%

60400401 1%

60400301

60401901

21K

1K5

1%

1%

60402301 1%

60416601 1%

36302001 SW

PUSHBUTTON

51000301

12 S1 S2 S3 S4 S5 S6 S7 S8 S9 S13 S14 S15

1 S12

1 SW1

1 T1

3

3

T3 T5 T8

T4 T6 T9

1 T7

1 V1

1 V2

1 V3

1 X2

64600201

64600301

MJD122

MJD127

AD226 Service Manual 17

Left

J1

Phonejack Stereo SW

Right

J2

Phonejack Stereo SW

Bone

J3

Phonejack Stereo SW

GND_Left

C1

22n

LEFT

C2

100p

Chassis

GND_Right

C3

22n

RIGHT

C4

100p

Chassis

Model 071: InsertMask.

Model 093: Pat.Respose

J4

Phonejack Stereo SW

GND_Bone

C5

22n

BONE

C6

100p

Chassis

GND_INS

INS

PAT_RES

C7

22n

C8

100p

C9

NP

5

6

3

4

7

8

1

2

Mainboard 071: MX2

Model 093 = NP

GND_INS

INS

GND_Bone

BONE

GND_Right

RIGHT

GND_Left

LEFT

Chassis

1

4

5

2

3

6

GND_Bone

BONE

GND_Right

RIGHT

GND_Left

LEFT

Model 071 = NP

Mainboard 093: MX1

+5V

Model 071: Pat.Response

Model 093 = NP

J5

Phonejack Stereo SW

+5V

C10

22n

Chassis

+5V

PAT_RES

C11

22n

PAT_RES

3

4

1

2

Mainboard 071: MX1

Display Board 093: MX3

Presskrue-3mm

Chassis

Lodde ø

080403 PSC

121250 PSC

Rear Panel 071/093

69011301

TKJ

TKJ

Page 18

Component Index and Partlist

Quantity Part Reference Part Number Value Tolerance

6

4

C1 C3 C5 C7 C10 C11

C2 C4 C6 C8

1 CO1

65651 Labels

60658

59751

22n

100p

42457 8pol

1 CO3

5 J1 J2 J3 J4 J5

42455 4pol

60120 Phone jack Stereo SW

10%

1%

60324 0 1%

AD226 Service Manual 19

Mainboard 071: RC3

Mainboard 093: NP

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

C26 22n

C27 22n

C28 22n

Chassis

3 5 2 4 1 1 2 4 5 7 8

3

4

1

2

5

6

NC

GND

+5V

-12V

GND

+12V

Mainboard 071: MX3

Mainboard 093: MX4

Mainboard 071: MX5

Mainboard 093: MX2

Mainboard 071: MX4

Mainboard 093: MX5

Chassis

C10 1n

C11 1n

C12 1n

C13 1n

C14 1n

C15 1n

C16 1n

C17 1n

C18 1n

C19 1n

C20 1n

C21 1n

C22 1n

C23 1n

C24 1n

C25 1n

Chassis

CO2 25pol

PRINTER

Chassis

Chassis

Chassis

RS232

Chassis

Chassis

Chassis

CO7 9pol

Model 041

Chassis

080403 PSC

121205 PSC

Rear Panel B 071/093

69011401

TKJ

TKJ

Page 20

Component Index and Partlist

Quantity Part Reference Part Number Value Tolerance

65651 Labels

43 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15

C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C29 C30 C31

C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44

C45 C46

3 C26 C27 C28

1 CO1

1 CO2

1 CO3

1 CO4

1 CO5

60658 22n 10%

42461 16pol

65898 25pol

42456 6pol

42458 10pol

42455 4pol

62179 9pol

AD226 Service Manual 21

Fuse PCB

Fuses:

2x 1A 125V Slo-Blo part number 63600801

1x 2A 125V Slo- Blo part number 63601001

AD226 Service Manual 22

Calibration Procedure

Service, adjustment and repair

This instrument can be serviced, adjusted and repaired without loosening the validity of the CE-marking provided the measuring equipment used is fulfilling the demands below, the adjustment procedures are followed and the personnel is having the necessary qualifications approved by Interacoustics.

Equipment for adjustment

In order to assure correct calibration of the audiometric equipment, it is important that the necessary measuring equipment is present and that it is reliable and stable.

Minimum requirements for measuring equipment:

−

Measuring amplifier with input for condenser microphone or a sound level meter, fulfilling the demands of IEC 651 Type 1.

−

Acoustical coupler, 6cc and 2cc. Fulfilling the demands of IEC 308 and IEC 126.

−

1” pressure field condenser microphone for the above mentioned couplers, fulfilling the demands of

IEC 1094-1.

−

Artificial mastoid, fulfilling the demands of IEC 373.

−

Furthermore it is recommended to have an acoustic calibrator for the control of the complete measuring chain.

−

General purpose frequency counter.

−

General purpose digital multimeter.

In order to be able to trace and monitor the signals it will be convenient also to have an oscilloscope.

Hardware Calibration

The calibration of AD226 is separated in two parts, a hardware calibration and a software calibration (sound level adjustment and modification register adjustment).

While keeping shift and Talk Forward buttons down, switch on power on the rearside of the instrument. The AD226 is now in software calibration menu. Wait 3 minutes, while the instrument stabilises.

All measuring points (MP) and potentiometers(P) are located on the main board, and measurements are made with reference to MP11 (GND) — see Main board Index page 13.

Calibration of Attenuator in channel 1

Select software calibration(see description above).

Select shift — Ext Range and the AD226 will turn to attenuator calibration menu. The display will show:

0 dB on channel 1

* step(s)

1. Connect an AC voltmeter to MP4 and notice the output V1.

2. Connect the AC voltmeter to MP7.

4. Press Frequency Decr. and the display will show:

-60 dB on channel 1

* step(s)

AD226 Service Manual 23

5.

Adjust P4 until the AC voltmeter shows exactly 60 dB less than V2.

6. Press Frequency Decr. and the display will show.

-120 dB on channel 1

* step(s)

Notice: Point 7 can only be done by use of an AC voltmeter with 1000 Hz band pass filter.

7. Press Intensities Decr. or Incr. in channel 1 until the AC voltmeter with 1000 Hz Filter shows exactly

120 dB less than V2. ( * = number of steps, max

± 8 steps).

Calibration of Attenuator in channel 2

9. Press Intensities Decr. or Incr. in channel 2, the display will show.

0 dB on channel 2

* step(s)

10.

Connect an AC voltmeter to MP5 and notice the output V3.

11. Connect the AC voltmeter to MP8.

13. Press Frequency Decr. and the display will show .

-60 dB on channel 2

* step(s)

14. Adjust P6 until the AC voltmeter shows exactly 60 dB less than V4.

15. Press Frequency Decr. and the display will show .

-120 dB on channel 2

* step(s)

Notice: Point 16 can only be done by use of an AC voltmeter with 1000 Hz band pass filter.

16. Press Intensities Decr. or Incr. In channel 1 until the AC voltmeter With 1000 Hz Filter shows exactly

120 dB less than V4. ( * = number of step max

± 8 step).

Activate shift Intensity Decr in channel 2 ( off ) to leave the hardware calibration

AD226 Service Manual 24

LCD angle adjustment

Adjust by means of P2 the LCD angel on the display to a suitable readability.

Software Calibration

General Description

Before the calibration can begin, the Set-up Item “Bone Type” in the Set-up menu, must be set to a correct value.

(See list of Set-up items on page Appendix AD226 B1).

Enter the Set-up menu by activating <shift> Pulse key. The Item can only be changed, when the shift key is activated.

To get into Calibration menu, press <shift> Talk Forward, when the instrument is powered up, until the display shows “ Welcome to the AD226 Calibration “. The AD226 will now be in calibration mode.

Select the output that has to be calibrated.

Connect the output to an artificial ear or mastoid (Air or Bone), or 2ccm coupler.

To leave the Set-up menu or the Calibration Menu, press <shift> Decr on channel 2 (off).

What to do

1. Select the output to be calibrated

(Phone Right/Phone Left/Bone Right/Bone Left(=Insert Masking)/Insert phone Right/ Insert Phone Left).

Insert Phones is selected by activating <shift> Right or Left

2. Select input (Tone/Narrow Band/White Noise) by activating the channel 2 Intensity Keys.

3. Follow the procedure as described below for the selected inputs

Tone Calibration

See General Description above and select Tone.

1.

Select by means of Frequency Incr/ Decr the frequency that is to be calibrated.

2.

Activate Intensity Incr/Decr channel 1 until the desired sound pressure level has been achieved.

3.

Activate STORE.

4. Go to point 1 until all frequencies have been calibrated.

5. Select a new output

(Phone Right/Phone Left/Bone Right/Bone Left (=Insert Masking)/Insert phone Right/ Insert Phone Left). and repeat point 1-2-3-4.

Narrow Band Calibration

See General Description above and select NB in channel 2.

Follow the procedure from Tone Calibration point 1-2-3-4-5.

AD226 Service Manual 25

White Noise Calibration

See General Description and select WN in channel 2.

1. Activate Intensity Incr/Decr channel 1, until the desired sound pressure level has been achieved.

3. Select a new output

(Phone Right/Phone Left/Insert phone Right/ Insert Phone Left(=Insert masking)) and repeat 1 and 2.

Activate shift Intensity Decr in channel 2 ( off ) to leave the software calibration

AD226 Service Manual 26

Appendix A Technical Description of the RS232 Interface version 2.00

General Specification

The RS232 interface is designed to transmit data from the audiometer to a computer, and to control the audiometer from a computer.

Pin Connection

The following pins on the RS232 socket are used:

Plug for computer (25 pins) Plug for audiometer (9 pins)

2

3

5

6

7

20

Received data (RXD)

Transmitted data (TXD)

Clear To Send (CTS)

Data Set Ready (DSR)

Signal Ground

Data Terminal Ready (DTR)

Logic Levels

Data:

Mark: «1» = -12 volt

Space: «0» = 12 volt

Control:

On: = 12 volt

2

6

4

3

8

5

Data Format

Data transmitted to the audiometer is and must be asynchronously and consist of:

1 bit

8 bits

2 stop bit even parity is used

The baud rate can be selected internally ( by use of set-up ) between the following values:

9600,19200,38400 B/S.

AD226 Service Manual Appendix A 1

Control Wires

The DSR pin is always ON when the RS232 cable is connected.

The pins DTR and CTS is used for handshake in the following way:

The Computer wants to transmit data to audiometer.

1. If the CTS is OFF no data transmission is possible.

2. If the CTS is ON 1 byte can be transmitted.

3. The audiometer will send an Acknowledge pulse on the CTS (low going) on app 0.5 mS when the byte is

received.

The audiometer wants to transmit data to the computer.

1. If the DTR is OFF, no data transmission will take place.

2. If the DTR is ON 1 byte will be transmitted.

3. The audiometer will wait for an Acknowledge pulse on the DTR (low going) which must be at least 0.5 mS.

Transmission. Figure 1.

AD226 Service Manual Appendix A 2

Communication

RS232 Standard for Interacoustics A/S

Both the computer and the instrument can send out a request for information or send back requested information.

To make it easier to understand how the philosophy behind the RS232 communication standard works for an instrument and a PC the following terms will be used. The part that request information will be called a Master and the part who will send back requested information will be called a Slave.

Master Slave

RS232 communication

Master/slave communication. Figure 2

Data transmission between the Master and the Slave are using the following format.

Data packet from a Master device.

Recipient Sender Direction Header Data

Data packet from a Slave device.

Recipient Sender Header Data

“Recipient” and “sender” are revered for later use and can be ignored. Both the Recipient and the Sender are consisting of two bytes each.

A data packet form a Master will always contain a Direction. This direction tells the slave if it has to store or to send out the kind of data the header describes. The header is an indicator for the type of data and how the are transmitted.

Control Codes

All information’s in the transmission between a Master and a Slave are controlled by control codes (see table 1).

Code Hex Description Code Hex Description

STX 02 Start of TeXt GS

EOT 04 End Of Transmission RS

1D

1E

Group Separator

Record Separator

SOH 01 Start Of Header

US 1F Unit Separator

SI

SO

0F

0E

Control Codes. Table 1.

A datapacket from a Master will look like this with all it’s control codes :

Shift In

Shift Out

STX Recipient

US

Sender

US

Direction

SOH

Header

US

Data

EOT

Direction can either be SO or SI. If It is a SO (shift out) direction the Master wants to send data into the slave and if it is a SI (shift in) direction the Master wants to receive data.

AD226 Service Manual Appendix A 3

A datapacket from a Slave will look like this with all it’s control codes :

STX

Recipient

US

Sender US SOH Header

US

Data

EOT

Note ! When a Master is using a SO direction the slave will send back nothing !

Each time data is transmitted a US control code is added. Ex. 10 US 125 US …. With this construction it is always possible to see when all bytes in a single data transmission is completed.

Header and Data Formats

A header consists of a control code (SOH) and 6 byte (header). Each header tells witch kind of data that follows and how the data format is. The following table describes the different types of headers and there data format.

Audiological Information

Tone Audiogram

Free Field 1

Header

GTF100

GTF105

Description

Hearing Level

Masking

Format

frequency US dB US frequency US …. frequency US masking US frequency US ….

Free Field 1. Table 3

Free Field 2

Header

GTF200

GTF205

Description

Hearing Level

Masking

Format

frequency US dB US frequency US …. frequency US masking US frequency US ….

Free Field 2. Table 4

Insert Masking

Header

GTIM00

GTIM05

Description

Hearing Level

Masking

Format

frequency US dB US frequency US …. frequency US masking US frequency US ….

Insert Masking. Table 5

Left Bone

Header

GTLB00

GTLB05

Description

Hearing Level

Masking

Format

frequency US dB US frequency US …. frequency US masking US frequency US ….

Left Bone. Table 6

Left Phone

Header Description

GTLP00 Hearing Level

GSLP01 Left Phone UCL

GTLP05 Masking

Format

Frequency US dB US frequency US ….

Frequency US dB US frequency US ….

Frequency US masking US frequency US ….

Left phone. Table 7

AD226 Service Manual Appendix A 4

Right Bone

Header Description

GTRB00 Hearing Level

GTRB05 Masking

Format

Frequency US dB US frequency US ….

Frequency US masking US frequency US ….

Right phone. Table 8

Header Description

GTRP00 Hearing Level

GSRP01 Right Phone UCL

GTRP05 Masking

Format

Frequency US dB US frequency US ….

Frequency US dB US frequency US ….

Frequency US masking US frequency US ….

Right phone. Table 9

Test Results

Hughson/Westlake Test

To get stored data from the Hughson/Westlake test it is necessary to use the headers for LEFT and RIGHT

(GTLP00 and GTRP00). This has to be so because the data from the Hughson/Westlake test is stored in the same place as the normal data.

Bekesy Test

Header Description Format

ATBL00

ATBR00

ATBL01

ATBR01

Bekesy test — left tone

Bekesy test — right tone

Bekesy test — left average tone

Bekesy test — right average tone

Tone Type* US L/H* US M/F* US Freq US dB

US… GS Tone Type* US L/H* US M/F* US

Freq US dB… etc.

Tone Type* US L/H* US M/F* US Freq US dB

US… GS Tone Type* US L/H* US M/F* US

Freq US dB…etc.

L/H US Freq US dB US Freq US dB US…. GS

L/H US Freq US dB…

L/H US Freq US dB US Freq US dB US…. GS

L/H US Freq US dB

ATBA00

ATBA01

ATBA02

ATBA03

ATBA04

ATBA05

Bekesy Average left phone continuos tone Stimuli* US Masking* US Freq US dB US Freq dB US …

Bekesy Average right phone continuos tone Stimuli* US Masking* US Freq US dB US Freq dB US …

Bekesy Average left phone pulse tone Stimuli* US Masking* US Freq US dB US Freq dB US …

Bekesy Average right phone pulse tone Stimuli* US Masking* US Freq US dB US Freq dB US …

Bekesy Average FF1 continuos tone

Bekesy Average FF2 continuos tone

Stimuli* US Masking* US Freq US dB US Freq dB US …

Stimuli* US Masking* US Freq US dB US Freq dB US …

ATBA06

ATBA07

Bekesy Average FF1 pulse tone

Bekesy Average FF2 pulse tone

Stimuli* US Masking* US Freq US dB US Freq dB US …

Stimuli* US Masking* US Freq US dB US Freq dB US …

Bekesy test. Table 10

Stimuli can be Warble (1502), Tone (1501) or Narrow Band Noise (1503).

Masking can be nothing (12), fixed (13) or synchronised (14).

AD226 Service Manual Appendix A 5

Bekesy Test Categorisation

Header Description

ATBC00 Receive Bekesy Categorisation’s old audiogram

ATBC01 Send Bekesy Categorisation’s result

Format

Age US MSLT* US Right Side* US Left Side*

Right Low* GS Right High* RS Left Low* GS

Left High* US

Bekesy test. Table 11

ATBC00 :

MSLT is Month Since Last Test.

The sides have 6 fixed frequencies where dB values have to be filled in.

Right Side : 500 US dB US 1000 US dB US 2000 US dB US 3000 US dB US 4000 US dB US 6000

Left Side : 500 US dB US 1000 US dB US 2000 US dB US 3000 US dB US 4000 US dB US 6000 US

ATBC01 :

Values for Right Low, Right High, Left Low and Left High are 1,2,3/4 or 5. Depending on the test result 1 and/or 2 and/or 3/4 can be send back for each of the 4 categorises mentioned above.

Information

Header Description Format

GDID01 Brand name and version Brand name US Program Version US

GDID02 DSP program version data US

GDID04 Instrument name and version AD226 US Program Version US

Information. Table 12

Difference on GDID01 and GDID04 is that GDID01 returns with the brand name that can be changed by user and

GDID04 always return with the same name.

Controlling the AD226

It is possible to remote the AD226 from the computer via the RS232 link with different commands. One of the commands is SPKY00 — the set key command.

Set Key Command

Keys, special keys and menu’s has each a specific number that can be overruled by the RS232 link. In the following all available codes are shown and the syntax for SPKY00 is shown below.

Header Description

SPKY00 Remote command for the AD226

Format

Code US

Set key command. Table 13

Keys are grouped the following way :

AD226 Service Manual Appendix A 6

Key

Key name

Tone/warble

Code Key name

2

Store

Code Key Name

25

Off

Code

50

Autotest

Synch.

Extended Range

Left

3

Hz decr

4

Hz incr

5

dB decr Ch2

6

dB incr Ch2

7

dB decr Ch1

26

Delete

27

Familiarisation

28

Headset Left

29

Headset Right

30

SISI

54

56

59

60

Right

1/5 dB

Manual/Reverse

Single/Multi Pulse

Bone

12

dB incr Ch1

13

Stenger

14

ABLB

15

Langenbeck

31

41

40

45

No Response

UCL/HL

67

69

81

Key codes. Table 14

Beside the SPKY00 command there are other possibilities to control the AD226. With the following commands the frequency, intensity and interrupter for both channel can be set .

Header Description

SPF100 Set frequency for both channels

SPA100 Set attenuator for channel 1

SPA200 Set attenuator for channel 2

SPI100

SICP01

Set interrupter for channel 1

Delete all patient data

Format

freq1 US freq2 US freq3 US….. dB1 US dB2 US dB3 US….. dB1 US dB2 US dB3 US…..

“1” is on and “0” is off

SICP02 Reset to power-up menu

Other remote commands. Table 15

AD226 Status

The AD226 can transmit different status information

Header

SGTS00

SGSS00

Description

Total instrument status

Stored instrument status

Format

Struct Ch1 GS struct Ch2 GS Key US GS Pat.

Resp Left US Pat. Resp Right US GS

Interrupter Ch1 US Interrupter Ch2 US dB level Ch1 US dB level Ch2 US frequency

US Speech % normal US Speech % stored

US Store Flag US Pat. Resp. Left US Pat.

Resp. Right US Interrupter Ch1 US Interrupter

Ch2 US.

SGRS00

SGGA00

Reduced instrument status

Send all stored data

Ch1 intensity US -15(Ch2 off)/Ch2 intensity

US Ch1 Frequency US Ch1 input US Ch1 output US store flag US

Returns with all data stored. Look for headers in the return string and see in this manual for format description.

Active Menu US Submenu US SGME00 Menu Status

Status information’s. Table 16

struct Ch1 and struct Ch2

Intensity dB level US frequency US input* US phase* US output* US Bone side* US FF side* US discrimination US extended range extern US extended range intern* US stored discrimination

Bone side is ‘0’ if Bone Left is active, and ‘1’ if Bone Right is active.

FF side is ‘0’ if FF2 is active, and ‘1’ if FF1 is active.

Extended range internal is ‘1’ if the +20 dB step is active in the audiometer but not displayed on the Extended range Key.

AD226 Service Manual Appendix A 7

Key

Warble US Multifrequency US Multi pulse US Synch US Sim US Alt US Man Ch1 US HL US Single Pulse US Five dB US Man Ch2 US Store Flag US Talk Back US Monitor Ch1 US Monitor Ch2 US.

The value for the key is ‘1’ if active and ‘0’ if not active.

In struct Ch1 and struct Ch2 three types of data occurs : Input, phase and output. Each one represents a part of the way the signal is gated in the AD226 and is represented by a code

Input

Input Channel 1 Code Input Channel 2 Code

Pure Tone

Warble

100

Pure Tone

106

Warble

Narrow Band Noise

White Noise

Input codes Table 17.

120

126

123

124

Output

Code

128

161

Output Channel 1 Code Output Channel 2

Phone Left

141

Channel 2 off

Phone Right

140

Phone Left

Insert Left

143

Phone Right

Insert Right

Bone Right

142

Insert Left

171

Insert Right

Bone Left

170

Insert Masking

Output codes. Table 18

Active Menu and Submenu

Here is a table with a list of menus and submenus.

Active Menu

Tone Menu

H.W. Test

H.W. Trainer

Code

101

Submenu

ABLB

103

Stenger

104

Langenbeck

Setup Menu

Show Data

SISI

Bekesy Test

108

109

112

119

120

Bekesy Trainer

OSHA

OSHA Trainer

124

125

Menu codes. Table 19

160

163

162

165

Code

116

117

118

AD226 Service Manual Appendix A 8

EEPROM Control

It is possible to read and write the hole EEPROM using the command GDE100. If stored in a file the size will be about 4 Kbytes. Be aware that calibration values and set-up data are stored in the EEPROM. These data will be overwritten when data is transmitted back into the AD226.

Header Description Format

GDE100 EEPROM data Data1 US Data 2 US ……

EEPROM control command. Table 20

Programming Tips

Interacoustics RS232 Utility Program

A test program running under WINDOWS from version 3.1, called “Coupler”, has been made for testing the RS232 functions. Further more, with this program, the NAME of the instrument and some other «fixed» parameters can be set.

AD226 OnLine

It is possible to control the AD226 Online. The following steps is an example of how it can be done.

1. Init the instrument using the SPKY00 Header.

2. Use the SGRS00 to get running information about the status of the instrument.

3. if the store flag in the SGRS00 shows “1”, send a SGGA00 header in order to get all stored data.

4. repeat from point 2.

An example of this has been made in our PrintView program. This program runs under Window 3.11 or higher and can view online data from one of our instruments and make a print out of a desired menu.

Examples of Transmission

All ASCII characters are separated form control codes with “ “ ! Ex. “00” means two byte each representing a zero.

Ex. 1 Transmitting all EEPROM data from the AD226

Master STX “00” US “00” US SI SOH “GDE100” US EOT Ask for EEPROM data.

STX “00” US “00” US SOH “GDE100” US data…………. EOT Send EEPROM data. Slave :

Ex. 2 Sending all EEPROM data from to AD226

Master STX “00” US “00” US SO SOH “GDE100” US data……. EOT Send EEPROM data

Slave : Nothing.

Ex. 3 Setting a key or menu in the AD226

Master

Slave :

STX “00” US “00” US SO SOH “SPKY00” US “101” US EOT

Nothing

Switch to Tone audiogram

AD226 Service Manual Appendix A 9

Ex. 4 Getting all relevant subject data from the AD226

Master STX “00” US “00” US SI SOH “SGGA00” US EOT Ask for all data

STX “00” US “00” US SOH “SGGA00” US data…………. EOT Send relevant data. Slave :

Ex. 5 Getting data — left phone from the AD226

Master STX “00” US “00” US SI SOH “GTLP00” US EOT

Slave : STX “00” US “00” US SOH “GTLP00” US data…………. EOT

Ask for data

Send relevant data.

Window Routines in C++

In the following you will find C++ code for the PC that shows how we handle the RS232 transmission in the PC.

The first function is how we transmit data to the instrument. The code is compiled with a Visual C++ 4.2 compiler as a 16 bit program.

Note this line “modem_status += 35;”. It gives the address of the modem status register for monitoring communication signals. Without this the communication will not work properly.

{

Transmit Data from PC to Instrument

IaRs232Transm(int idComDev,char FAR* source,DWORD num) unsigned int i; char FAR * modem_status; modem_status = (char FAR *) SetCommEventMask(idComDev,0); modem_status += 35; // this is the address of the modem_status register

SetCommEventMask(idComDev,EV_CTS); for( i =0; i < num; i++,source++)

{ millisec = GetTickCount(); while( GetTickCount() — millisec < 5000 ) // Wait max 5 sec on CTS

{ if ( *modem_status & 0x10 ) // CTS is bit 4 in modem_status register

break;

} if ( !(*modem_status & 0x10 )) // CTS was not on

return(FALSE);

GetCommEventMask(idComDev,EV_CTS); // Reset «CTS»

WriteComm(idComDev,source,1); // Transmit 1 char

RetVal = FALSE; // Wait til CTS will go Low millisec = GetTickCount(); while( GetTickCount() — millisec < 5000 )

{ if ( GetCommEventMask(idComDev,EV_CTS) == EV_CTS )

AD226 Service Manual Appendix A 10

{

break;

}

} if ( RetVal == FALSE )

return(FALSE);

}

return(TRUE);

}

Receive Data from Instrument

{

In the following you will find our receiving routine.

IaRs232Receiv(int idComDev,char FAR* dest,unsigned int max) unsigned int i,first = 0,NrOfByte;

*dest = 0;

NrOfByte = 0;

while(1)

{ millisec = GetTickCount(); while( GetTickCount() — millisec < 10000 ) // try in 3000 mSec

{

GetCommError(idComDev,&comstat); if (comstat.cbInQue > 0 )

break;

} if (comstat.cbInQue == 0 )

return(FALSE);

ReadComm(idComDev,dest,1); if( NrOfByte == max )

return(FALSE);

NrOfByte++; for( i=0;i < DTROFF;i++) // Acknowledge

EscapeCommFunction(idComDev,CLRDTR);

EscapeCommFunction(idComDev,SETDTR); if ( !(*dest == EOT || *dest == CR)) else

{ dest++;

*dest++ = »; // End of string

return(TRUE);

}

}}

AD226 Service Manual Appendix A 11

Appendix B Setting of Set-up items

Introduction

To Enter the Set-up

Hold down «shift» while activating the Pulse Key

The LCD display will now show:

Welcome

to AD226 Set-up

The Set-up item number can be changed by activating the Intensity Increase / Decrease Keys in channel 2. The contents of the Set-up item can be changed by turning the HL dB Increase / Decrease Keys in channel 1. To set all items to there previous settings in one action hold down «shift» while activating the Synchr. Key when the AD226 is in calibration mode.

To Leave the Set-up

Hold down «shift «while turning the HL dB Increase / Decrease Key channel 2, or hold down «shift» while activating the Pulse key.

Restoring one Set-up item

AD226 remembers the previous setting of a Set-up item. Hold down «shift» while activating the Synchr. Key when the AD226 is in the Set-up menu. This action will restore the Set-up item to what it was before it was changed.

Set-up Items

In the following all set-up items will be shown with the factory set-up.

Set-up item 1 Baudrate

Is used to select the Baudrate (RS232 transmission speed) from 9600-19200-38400.

Set-up Item 1

Baudrate : 38400

Set-up item 2 RS232 — Handshake

Is used to turn “Special”/”Normal” the handshake control between a PC and the instrument. Handshake is used with RS232 communication in order to make the flow of data correct. In some cases the computers requires this option to be “Special”.

Set-up Item 2

Handshake : Normal

AD226 Service Manual Appendix B 1

Set-up item 3 CRC Check

Is used increase safety level when transmitting data via the RS232 link. Contact Interacoustics A/S for more information about the CRC algorithm and use of the feature. Default setting is Normal.

Set-up Item 3

CRC Check : Normal

Set-up item 4 Auto Test

Is used to select what kind of auto test the key Auto Threshold will start. The choices are Hughson Westlake or

Bekesy test

Set-up Item 4

Auto Test : H.W. Test.

Set-up item 5 H.W. Bottom

Is used to select the lowest intensity level for the HW test.

Set-up Item 5

H.W. Bottom :-10 dB

Set-up item 6 H.W. Test

Is used to select the threshold method in ‘H.W. Test’. The possibilities are 2 responses out of 3 presentations, or 3 responses out of 5 presentations on the same dB value.

Set-up Item 6

H.W. Test : 2-3

Set-up item 7 Bekesy Reversals

Is used to set the minimum number of reversals within the frequency, before a retest of that frequency will be made. The number of reversals that can be selected goes from 5 to 40.

Set-up Item 7

Bek. reversals : 6

AD226 Service Manual Appendix B 2

Set-up item 8 Bekesy Deviation

Is used to set the maximum dB value that the peaks or valleys must deviate among themselves, before a retest of the active frequency will be made. The deviation that can be selected goes from 5 to 60 dB.

Set-up Item 8

Bek. deviation : 10 dB

Set-up item 9 Bekesy Stimuli

Is used to select between Tone and NB as stimulus during a Bekesy test

Set-up Item 9

Bek. Stimuli : Tone

Set-up item 10 Bekesy Categorisation

Is used to set activate the Bekesy Categorisation mode.

Set-up Item 10

Bek Categorisation : Off

Set-up item 11 Bekesy Stimuli to Print

Is used to select the type of curve that will appear on the printout. Select between All, Continuously or Pulse stimuli.

Set-up Item 11

Bek Stimuli Pnt : All

Set-up item 12 Bekesy Curve to Print

Is used to select what curve or curves that will appear on the printout. Select between All, Average or Tracing curves.

Set-up Item 12

Bek Curve Pnt : All

AD226 Service Manual Appendix B 3

Set-up item 13 Buzzer

This item is used to select Buzzer after Auto test

Set-up Item 13

Buzzer after Auto test : On

Set-up item 14 Print After Test

Is used to select if the instrument should print out automatically after the Autotest is finished.

Set-up item 15 Printer

Set-up Item 14

Printer after test : Off

Is used to select between 3 types of printers. The choices are MTP10, HP GL 2, IBM Mode (matrix / most Ink jets) or HP PCL L3 (Hp DiskJet printer and Hp Laser printer). The IBM mode and HP PCL L3 can only be selected if the adapter IPA26 (optional) has been built into the instrument. IPA26 is not longer available.

Set-up Item 15

Printer : HP GL 2

Set-up item 16 Frequency Deactivation in Auto Test

Is used to disable one or more of the following frequencies : 125 Hz, 250 Hz, 500Hz, 750 Hz, 1500 Hz, 8000 Hz.

The frequencies can be selected by activating the frequency Keys.

Set-up Item 16

Freq. Select : * * * * On

Set-up item 17 Frequency Deactivation in Manual Threshold

Is used to select between all frequencies or the reduced frequencies selected in item 16 in manual threshold mode.

Set-up Item 17

Man Mode : All Freq.

AD226 Service Manual Appendix B 4

Set-up item 18 Bone Type

Is used to select the maximum output on “Bone”, depending on the type of bone conductor used. The choices are

B71 & A20

The content can only be changed by holding down «shift» while turning the HL dB Increase/decrease key in channel 1. New Calibration of Bone is necessary.

Notice:

Set-up Item 18

Bone mode : B71

Set-up item 19 Bone Symbols

Is used to decide how the bone symbol should look on printouts. The choices are :

Display shows : ‘< : Right’

Display shows : ‘> : Right’

Right

<

>

Left

>

<

Set-up Item 19

Bone symbols : < : Right

Set-up item 20 Bone Output

Is used to select between Bone Conductor or Loudspeaker (PLS), as the connected transducer to the bone output.

Notice: The content can only be changed by holding down «shift» while turning the HL dB Increase/decrease key in channel 1. New Calibration of Bone is necessary.

Set-up item 21 Bone Masking

Set-up Item 20

Bone output : Bone

Is used to select masking phone output on channel 2 when bone on channel 1 is selected.

“Insert Masking” or “Opposite Ch1” (headphones)can be chosen.

Set-up Item 21

Bone Mask : Opposite Ch1

AD226 Service Manual Appendix B 5

Set-up item 22 ABLB Pulse Time

Is used to select the pulse speed in ABLB mode. The pulse speed can be changed from 250 mS to 5000mSin steps of 50 mS..

Set-up Item 22

ABLB pulse time : 500 mS

Set-up item 23 Multipulse Length

Is used to select the pulse length. The pulse speed can be changed from 250 mS to 5000mSin steps of 50 mS..

Set-up Item 23

Multipulse : 500 mS

Set-up item 24 Singlepulse Length

Is used to select the pulse length. The pulse length can be changed from 250 mS to 5000 mSin steps of 50 mS..

Set-up Item 24

Singlepulse : 500 mS

Set-up item 25 Noise in Channel 2

Is used to select between Narrow Band or White Noise for output in channel 2.

Set-up Item 25

Noise in Ch 2 : NB

Set-up item 26 Attenuator Position

Is used to select the attenuator position when a new transducer is activated. It can be selected from -10 to 50 dB, in steps of 1 dB , or Off.

Set-up Item 26

Default int. : 30 dB

AD226 Service Manual Appendix B 6

Set-up item 27 dB Value

Is used select the step-down value of the attenuator, when the frequency is changed. It can be selected from 5 to

40 dB, in steps of 5 dB , or Off.

Set-up Item 27

Int. stepdown : Off

Set-up item 28 Not Heard Line

Is used to enable/disable lines between not heard symbols on printouts.

Set-up Item 28

Not heard line : No

Set-up item 29 Frequency Jump

Is used to select how the frequency jumps, when activating the frequency keys. Select between Bottom and

Butterfly.

Bottom Trying to increase the frequency selection beyond 8 kHz, will cause the frequency to jump to 125 Hz, ready to perform increasing frequency selection.

Butterfly Trying to increase the frequency selection beyond 8 kHz, will cause the frequency to jump to 1 kHz, ready to perform decreasing frequency selection. Trying to decrease the frequency below the lowest frequency, will cause the frequency to go to 1 kHz ready to perform increasing frequency selection.

Set-up Item 29

Freq. Jump : Bottom

Set-up item 30 Function Key

With the function key it is possible to select between SISI, Langenbeck, Stenger or ABLB. The selected test will be the default test.

Set-up Item 30

Func. key : SISI

Set-up Item 31 OSHA Retest

With this option you can set a level for when the test can continue. If the threshold at 1000 Hz retest is below the value the test can continue.

Set-up Item 31

OSHA Retest pass : 10 dB

AD226 Service Manual Appendix B 7

Set-up Item 32 OSHA Level

At frequency shift the OSHA Level is added to the intensity.

Set-up Item 32

OSHA Level : +15 dB

Set-up Item 33 OSHA Stimuli

What stimuli to use in the OSHA test.

Set-up Item 34 Delete Key

Set-up Item 33

OSHA Stimuli : Tone

How the delete key will work. Selecting “Partial” the delete key will work as always. Selecting “All” the key will delete all data pressed once.

Set-up Item 34

Delete key : Partial

Set-up Item 35 Phone Selection

Select whether you want to use HDA200 or TDH39 as phone.

Notice: The content can only be changed by holding down «shift» while turning the HL dB Increase/decrease key in channel 1

Set-up item 36 DSP Version

Set-up Item 35

Phone Selection : TDH39

This register cannot be changed, but it tells what version the DSP (Signal Source) have.

Set-up Item 36

DSP Version : * * * * *

AD226 Service Manual Appendix B 8

Appendix AD226 U Update News

Following Modification is made from serial 746702:

Fuse PCB 51015802

Fuse SI3 is modified to 2A

Modification revision 09/2007:

IPA26 Printer adapter is not longer available

Modification from series 552833:

New Fuse board PCB 69029101 PCA 51015801

To protect against shortscuts on the mains switch a fuse board is added

Modification for edition from series 338679

All ferrites L1 to L8 are replaced with 0R resistors due to intermittent measurement errors after introducing leadfree version of DSP.

Some instruments with lower serial number than 338679 may be modified.

Modification for edition from series 160326

Mainboard 67861

As a consequence of change to Power Supply UPS400, two protection Z-diodes are removed from PCB

Modification for edition from series 152375

New Program version 3.12

Modification on Set-up item 16 Frequency Deactivation in Auto Test, 500Hz is added

Previous versions 1.xx and 2.xx are modified into versions 1.41 and 2.36

Modification for edition from series 139511

New Power Supply UPS400

Replaces UPS200 – fully compatible

AD226 Service Manual Appendix U 1

Обновленный универсальный аудиометр AD226 работает по принципу гибридной технологии (true hybrid), что предоставляет вам возможность работать на устройстве как в автономном режиме (без подключения к ПК), так и в режиме подключения к компьютеру. При этом вам доступны все преимущества аудиометра, подключенного к компьютеру (ПО Diagnostic Suite — опционально) : полноценные базы данных Noah, Otoaccess, интеграция с другими медицинскими протоколами. Миниатюрный вид позволяет с легкостью использовать данный аудиометр в качестве выездного, а мощный внутренний процессор обеспечит полную функциональность без использования компьютера. Цветной TFT-дисплей 4.3″ с высокой четкостью изображения позволяет с легкостью считывать аудиограммы, а вес в 1,5 кг делает аудиометр AD226 просто незаменимым для выездных обследований!

 

Посмотреть технические характеристики

 

 Возможные модификации

Производитель Интеракустикс А/С	AD226 B	AD226 E
Основные характеристики:
Стимул (ТОН)	Чист. тон, пульс, трель	Чист. тон, пульс, трель
Частоты	125-8000Hz	125-8000Hz
Каналы	1½	1½
Интенсивность	от  -10 до  120 дБ ПС	от  -10 до  120 дБ ПС
шаг аттеньюатора	1 — 2 — 5 дБ	1 — 2 — 5 дБ
Выход	Воздух, Кость, Речь	Воздух, Кость, Речь
Маскировка	Есть, NB	Есть, NB
Экран с данными тестов	да	да
Связь с пациентом	Прямая / Обратная	Прямая / Обратная
Польз.отчеты печати	Есть (через ПК)	Есть (через ПК)
Вывод наэкран данных маскировки	да	да
Специальные тесты
SISI	нет	да
ABLB (Fowler)	да	да
Bekesy	нет	да
Stenger	да	да
Weber	только с PC Suite	только с PC Suite
Tone in noise / Langenbeck	нет	да
Auto threshold (HW)	да	да
Совместимость с приложениями
Noah interface	да	да
OtoAccess Interface	да	да
EMR interface	да	да
Спецификация
Standalone / PC-based	Оба варианта (Hybrid)	Оба варианта (Hybrid)
Клавиатура	Встроенная	Встроенная
Внутр. Память	500 пациентов	500 пациентов
Дисплей	4,3» (480 х 272 pix) color	4,3» (480 х 272 pix) color
Настройка яркости дисплея	да	да
Прямое подключение принтера	Есть (USB принтер)	Есть (USB принтер)
Порт USB / RS232	USB (4)	USB (4)
Калибровка трансдьюсеров	да	да
Раздельный вход для вносимого телефона	да	да
Вносимая маскировка	да	да
Футляр	да	да
Габариты (ДxШxВ) мм)	300*230*90	300*230*90
Вес, граммы	1300	1300

Комплект поставки:

• DD45 аудиометрические телефоны с оголовьем

• B71 костный телефон

• APS3 кнопка ответа пациента

• Кабель питания

• Инструкция по эксплуатации

• Мультиязычная инструкция по установке

Части за отдельную плату:

• Шумозащитные амбушуры Amplivox

• Футляр для переноски

• EARTone3A аудиометрические вносимые телефоны

• ПО Diagnostic Suite

• БД OtoAccess®

  Цена за аудиометр ad 226 зависит от конкретной модификации. Звоните по тел.: +7 (499) 238-81-03 за уточнением стоимости!