Service Manual
Contents
1. 1 LEFT OUTPUT SWITCH IC32C C115 22p 596 MJD122 46 20dB_1 L gt swic 20 MP7 VV I SW O BD Mounted on the jack SSM2402 CH 1 MX2 socket rearplate LEFT OUT C108 R120 4 eu 8 8119 14K3 C118 LEFT atout 1 gt 46 34 x 13 2201 2 II Page4 47 20dB CH1 XII 5 20 GND RIGHT pb 20 VDD1 x2 C117 4 II cr VDD 1 1 X4 2 GND 20 R127 SMD11A05 420dB C109 VSS 8121 INSERT 4 1 nom 100n 1 100n 4 1C32A GND VEE x7 HK RL2 Chassis SSM2402 VEE1 GND VEE1 V 4 RIGHTOUT 11 GND amp Oy GND 10 62222 gt gt gt C GND 4057 R128 3K01 VDD 5 L I SMD11A05 OS1C VDD1 RIGHT Paget 0818 C121 100p 196 100n VEE1 T IC328 me Page gt C123 age unu mE Om C122 220n LL4148 MDC3105LT1 20 MPs SET CH2 PE 22 n 109 4 75 RESET C112 R123 C34 8122 T ATOUT 2 x H GND eias Page4 407 2098 CH2 1M2. I I Digital VDD 45V Supply GND Interacoustics A S I I Date Constr Approved VDD1 12 Construction 091098 MBA IBP Analog VDDA 5V Revision 030506 PSC HBJ Supply GND OV 1 12V Tile Mainboard 071 Partno 69011001 Sheet 1 of 5 Not Present Drawingno 002003702 VDD VDD VDD VDD VDD VDD VDD VDD A A A A A A A A VDD VDD R19 R20 R21 R22 R23 R24 R25 R26 A QUIS MULTIFULSE 4K75 4K75 4K75 4K75 4K75 4K75 4K75 4 75 011 NC OUT19 BONEL OUT17 OUT20 REV S5 S4 S3 82 81 0 16 21 AE 9 3 19 CVI15 OUT22 5dB 4M75 EE e156 5 6 1 26 20 ot 10B 24 D9 OUT14 OUT23 39 AUTO THR SYNCH EXT RANGE LEFT RIGHT MAN gt Buse CUTS 08 Paget SHIFT 1 SINGLE PULSE T SH OUT26 58 GND S9 S8 87 86 yi 60127 ax 09 5 6 25 5 BONE ue NC 38 1dB 5dB MAN REV PULSE BONE L R AUT THR q a1 5 SYNCH
3. 21 HS E 22 25254 23 Service adjustment and 23 Equipment for adjustment 23 Hardware Calibration niece aede 23 Calibration of Attenuator in channel 4 23 Calibration of Attenuator in channel 2 24 LGD angle 25 Software Cabral 25 General DESCrption MN ES 25 Bero 25 Narrow Band Calibration 25 White Noise Calibration M 26 Appendix A Technical Description of the RS232 Interface version 2 00 eese 1 General a on D iR E E DERE Led 1 lt lt _ ______ _ ___ _ ___ _ _ _ _ _ _ _ _ _ _ _ 2 ERE A diological
4. 4 365LII 5 S e EI 5 he 6 BASS P LEE 7 EEPROM Control mr 9 _ 6 9 AD 226 OMe 6 3_ __ _3 _ 329 __ 9 9 33 3 _ _ _ _ _ __ _ _ _ _ _ ___ _ 10 Transmit Data from PC to Instrument 10 Receive Data from 11 Appendix B Setting of Set Up items 1 mA EE 1 SOUP TOMS sco opt e te Mea hE Mal 1 set up item 3 GRG Clieck ete tire b eet ddan aa p otl eee ien 2 Set up 8 Bekesy 3 Setupitem 19 BUZZer aiite oett e cott ie Ite Att at 4 5 18 Bone Typ6 eI a e e UT etta tt eeepc referee enun 5 Set up 22 ABLB Pulse 6 Setup tem 27 dB Vale needed IE Eee Tet ine e ete ded 7 set up tem 32 eU ERU T met eet arte re eed 8 Appendix 0226 U Update 1 AD226 Service Manual 1 General Technical Specifications Medical CE
5. 27 56 Extended Range 5 dBdecrCh2 28 Headset Left 59 Let 716 29 Headset Right 60 7 jdBderCh 350 5 67 1598 7 12 j dBinrCh 31 NoRespone _ 69 Manual Reverse 13 41 Single MultiPulse 14 40 15 Langenbeck 45 1 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 SPI100 Set interrupter for channel 1 is on and 0 is off SICPO01 Delete all patient data SICP02 Reset to power up menu Other remote commands Table 15 AD226 Status The AD226 can transmit different status information Header Description Format SGTS00 Total instrument status Struct Ch1 GS struct Ch2 GS Key US GS Pat Resp Left US Pat Resp Right US GS Interrupter Ch1 US Interrupter Ch2 US 505500 Stored instrument status dB level Chi US dB level Ch2 US frequency US Speech 96 normal US Speech stored US Store Flag US Pat Resp Left US Pat Resp Right US Interrupter Ch1 US Interrupter Ch2 US 568500 Reduced instrument status Ch1 intensity US 15 Ch2 off Ch2 intensity US Ch1 Frequency US input US Chi output US store flag US SGGAO00 Send all stored data Returns with all data stored Look for headers in the return string and see in th
6. 1K C103 SSM2404 N Page EE C166 100p 1 N7 N8 100n 1 2 SW C als GND 5dB wis C105 100p 1 R113 2M21 56240 R152 IC30A Paget IC30C pK TOK Ed uud AA2 2 SW C a 4 10dB SW swo 2 VDD1 S 158 R114 4K75 DCATT 2 phas SS n 04 55 2404 Page3 10K Paget 100n IC28B 100 Y GND V GND VEE1 GND 15dB GND 8115 13K3 ATOUT_2 55 2404 Pages 20dB GND R116 10 5 VDD1 C88 VDD1 0102 100n VDD1 C173 22 100 VEE1 GND blan R102 C91 C177 100 VDD1 20 ROUT 5 36 100p R158 100p 1 21K 1 R140 4 C183 IC27A GND mig R103 1K5 C162 1 GND I L210 TT THE Lun ore ES 8141 8139 100 T 20 198 L1 gt C29 044 10K R99 C89 V 275 1K5 12K4 21815 4K99 10n GND 4 5 C174 C175 100n V 10n V VEE1 GND GND V 5 GND 100n VEE1 GND GND 8110 3K92 VEE1 GND100n VEE1 C101 47p 5 I Digital Supply VDD Interacoustics A S i Date Constr Approved I Constructi Analog VDD1 12V onstruction 091098 MBA IBP Supply 45V Revision 030506 PSC HBJ aay Tile Mainboard 071 e I Parno 69011001 Sheet 4 of 5 NP Not Present Drawingno 002003702 Page 11 R125 3K01
7. PBO COLO Page2 PSTROBE PB1 2 S OS1B Page5 dB2B Page2 PB1 COL1 Page PB2 SIC Pages 12 2 COL2 Page2 4 PB3 34 gt 032 Pages PB3 COL3 39 PERR PB4 1 _ gt 0828 Page5 bs TORQ PB4 COL4 Page2 E PB4 Page2 pps 38 20520 Pages NS PBS COLS Page2 5 PBS Page2 7 lt TONE Page COL6 Page2 5 PBe HZ T RESP Page2 PB7 COL7 Page2 B A PB7 DSPdci 9 gt VDD 9 BRDY 28 45 a BRDY gt VDD p CLK BSTB MEB 12C 5 VDD 6 VDD NC NC C15 NC VDD X 24 I Nc VDD 100n NC vss 25 NC vss 284020 284020 100n Z84C20 GND EES m d 0 7 d GND lt gt DATA O 7 Page a 7 __ gt CNTRL 0 8 VDD Page3 5 A 5 X 10K0 D000 DFFF xi CSDSP Page3 R4 R5 R6 R7 R8 12 288MHz 117 51 LI 0 19 gt 0 19 ci 12p VDD Page2 3 VDD 596 VDD c4 A 6 1 c7 ee0 ee0 1 8 5 RC c8 R3 R10 eei cs vec gt C12 gt 1 Sem 10K 301 862 MEER cran 5 R157 4 MP1 A 100n 993 DO GND 5 6 GND VDDi VDD Ad al 93 66 V VE 8 2 4 5 GND 100n 100n 100n RESET A3 1 SENSE T i2 in 19 22 Page GND PESIN 9 T 2 MIT as 20 25 851 20 id do VEE1 GND GND NMI RES 2 2 2 2 2
8. US Freq US ATBRO1 Bekesy test right average tone L H US Freq US dB US Freq US dB US GS L H US Freq US dB ATBAOO Bekesy Average left phone continuos tone Stimuli US Masking US Freq US dB US Freq dB US ATBAO1 Bekesy Average right phone continuos tone Stimuli US Masking US Freq US dB US Freq dB US ATBAO2 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 Stimuli US Masking US Freq US dB US Freq dB US 05 Bekesy Average FF2 continuos tone Stimuli US Masking US Freq US dB US Freq dB US ATBAO6 Bekesy Average FF1 pulse tone Stimuli US Masking US Freq US dB US Freq dB US ATBAO7 Bekesy Average FF2 pulse tone 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 Format ATBCOO Receive Bekesy Categorisation s old audio Age US MSLT US Right Side US Left Side gram 1 Send Bekesy Categorisation s result Right Low GS Right High RS Left Low GS Left High US Bekesy test Table 11 ATBCOO MSLT is Month Since Last Test The sides have 6 f
9. 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 T 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 8 Press Store 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 12 Adjust P5 until the AC voltmeter shows exactly 20 dB more than V3 Notice the output V4 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 2 number of step max 8 step 17 Press Store Activate shift Intensity Decr in channel 2 off to leave the hardware calibration AD226 Service Manual 24 LCD angle
10. 9 D 5 50 5 2 2179 145 6154 147 20 VI 0 tac Bs C1560 8 Ocus 05 8147 Fg Interacoustics A S Pate Constr Approved 040395 151205 me Mainboard 071 59011001 001004001 Construction Revision Title Sheet 1 of 1 Drawingno AD226 Service Manual 13 Component Partlist Assembled Board PCA 51001902 Quantity Part Reference Part Number Value Tolerance 2 A1 A2 45108401 Labels 4 A4 A5 35500201 pertinaxskive 2 A7 A8 36309201 tast 0 1 A9 36309301 tast 0 1 A10 36307301 tast 1 1 A11 36307501 tast 1 1 A12 36307401 tast 1 2 A13 A14 36307101 tast 1 3 A15 A16 A17 36307201 tast 2 1 A18 36307701 tast 2 2 A19 A20 75800801 DIP32 4 A21 RC1 RC2 RC3 75801301 DIP16 2 C1 C2 61420301 12p 5 3 C3 C73 C93 61000301 68u 20 86 C4 C6 C7 C9 C10 C11 C12 C14 C15 C16 C17 61401101 100n 10 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 1 C5 61400101 22 10 9 C20 C21 C27 C44 C70 C90 C143 C169 C175 61401001 10 5 1 C22 61415301
11. 02 TM RES NT2 A8 9 A3 03 EAM A9 8 8 REF GND CLK A10 n 8 os 19 TL7705A c4 ag A 812 a7 22 68 C4 GND WR 12 V A7 07 861 65 1 A 8 DD aB 20 100 c2 13 59 39 MREQ A14 i 2 1 A9 200 62 A15 30 215 atg 60 215 ae a16 100n VDD aii 210 2 17 2 va R11 1 12 GND var ET WAIT A17 bo YO 301 gu 213 12 BUSREQ 22 a B Yi 8 A13 1 02 6 BUSACK A18 TOUT 6 H3 10 29 A14 603 ast Hi gt 81 6 Hu i ae A15 84 Q4 T 8 V4 2 2 05 aaa 8 690759 Y4 o 417 2 16 m 266 V 212117 A Page2 G2A Ye A18 9 Pages TXAO H 1X 0 do 8 1 zB vec lt 3 toon Pages RXAO 27 97 gt 124Q9 vss Page5 RTSO RTSO Bip cia 14 aio Page5 CTSO 46 50 D2 22 H X 15 qi ND DCDO D3 c3 4 4 612 80 CKAO DREQO D4 us VDD 4 1 05 gt 74HC4040 GND Bc V 58 06 59 TENDI p7 4447 GND 54 CKA1 TENDO Printer 1 ae 1 1 27 4001 6264 RXA1 RXA1 RXS CTST Wes 0000 CFFF E000 FFFF 190 vss lt 55 TXS vss 814 0 lt 57 vss lt _ 52 TS Ue eb 780180 R18
12. 1 9 OUTOG outst 20 74 DA OUTO5 OUT32 28 EXT RANG OUTO4 OUT33 28 OUTO3 OUT34 22 LEFT OUTO2 ENABLE 74 02 OUTO1 DATA SDATA Page1 RIGHT BC CLK Page Page gt VDD VSS Page ___ gt 514 S11A S11B S10A S10B Paget 2 gt gt 1 Page gt C 0 40 694 10 45 GND TALK FWD dB DEC CH2 dB INC CH2 dB DEC CH1 dB INC CH1 NP NP NP NP gt VDD COL7 lt c21 Paget COL5 VDD T5 BC857 596 Page COL3 lt V Page COL2 lt m GND GND Paget cori lt BRIGHTNESS P1 10 lt CONTROL 7 IC41 817 A dB2A dB2B Di Page dB1A 3V9 Page1 dB1B CH2 GND VDD S16 GND 100n 8 GND VDD1 VDD MC14490 CH1 GND VDD 3 1953 C22 100 5 47K5 6 7 GND 8 c161 Pagel Ekstern Printer 10K LL4148 E 407 835 10 gt TSW Paget 20 47K5 C27 22p 22p IC13C 10n GND gt M 5 5 4070 5 Paget 10K D15 D16 GND T2 GND GND lt LL4148 LL4148 GND p Kulfilm IC13B IC13D 22K Modstand GND 4070 GND 4070 LCD DISPLAY 1C4 10 1 CSLCD DISPLAY CONNECTION Touch Switch ADDR 0 19 501 LCM 523 Paget GND 1 1 vss PAT RESP VDD 16 2 VDD E VEE ADJ 2 3 vo 7 VDD a0 15 4 RS C28 al 3 5 R W vez 6M0 Pat Response s CELCD 14 6 C do 4 7 DBO IC14C 1 4088 po BIS R42 _ 8285 65 5 9 DB 20808 5 7
13. 10 5 9 C23 C24 C33 C34 C47 C48 C115 C122 C131 61400501 22p 5 1 C26 61002701 6u8 20 11 C31 C45 C52 C65 C67 C82 C100 C102 C144 C162 C163 61000201 10u 2096 1 C40 61003001 100u 2096 13 C41 C56 C57 C58 C116 C117 C118 C123 C124 C125 61401201 220n 2096 C132 C133 C134 17 C46 C72 C74 C92 C94 C128 C129 C145 C146 C147 C148 61401601 1u 1096 C149 C150 C151 C152 C153 C154 2 C55 C59 61401501 470p 596 C60 C61 C75 C95 C108 C112 C161 61000501 4u7 2096 14 C71 C85 C91 C105 C114 C121 C130 C137 C157 C164 61400201 100p 196 C165 C166 C167 C177 2 C81 C101 61407901 47p 596 1 C158 61400901 1n5 1096 4 C168 C170 C176 C178 61401801 in 196 1 D1 61700101 3V9 13 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 71700101 LED 6 015 016 017 D25 026 031 61700201 LL4148 4 D18 D19 D20 D21 71700301 LED 2 D22 D23 71700201 LED 1 D24 61700501 6 2 2 032 833 61700301 SL23 1 HF1 Earthgnd AD226 Service Manual 15 Keys and Led s Index 2 x led GREEN D22 D23 4x led ORANGE Touch Switch AD226 Service Manual 14 Quantity Part Reference HAH NH FAH A At gt HWW HF5 IC10 IC11 109 IC42 IC12 IC13 IC14 IC46 IC2 IC45 IC15 IC16 IC17 18 26 IC31 IC43 IC44 IC50 IC51 1052 1053 19 20 22 23 27 28 47 48 21 24 29 25 IC3
14. 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 selecti
15. C39 C40 C41 C42 C43 C44 C45 C46 C26 C27 C28 CO1 CO2 COS C04 C05 C06 C07 9 Part Number Value Tolerance 65651 66241 60658 42461 65898 42456 42458 42455 62179 Labels in 10 22n 10 16pol 25pol 6pol 10pol 4pol 9pol AD226 Service Manual 21 Fuse PCB Rewsion 160906 meo 1 of Title Fuse PCB 071 072 073 Sa 69029101 Interacov NP Not Present 5 222 002018402 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 condens
16. L I VEE ADJ 1 16 2 10 083 Patient response D20 D21 4 6 11 DB4 C29 Rat 2 2 FS 8905 n d5 1 12 DB 10 6 6 11 7 10 IC14D GND als GND 74HC04 DISPLAY LCD BACKLIGHT VDD 9 VDD VDD C30 46 Metalfilm E GND 0 586 Modstand IC14E 100n 023 Green 749604 eip TONE ast bi 1 IC14A POWER SUPPLY CONNECTIONS Tone CH1 1 3 DATA o 7 IC14F Digital VDD 5V GND Supply GND 0V Interacoustics A S 45 Date Constr Approved NBD bere 4 Construction 091098 MBA IBP Analog VDDA 45V Supply GND cias 182 Revision 030506 PSC HBJ VEE1 12V 74HCO4 Title Mainboard 071 69011001 Sheet 2 of 5 Present D awingno 002003702 Page 9 VDD hom x3 Toon C47 12 288MHz C48 I 23 R 1K ddi9 R132 1K Hom gt 059 gt GND D GND v 4 3 X
17. MJD122 MJD127 MDC3105LT1 79L05 LP2957 1 4 78L05 12 288MHz 16 67MHz AD226 Service Manual 17 Left Ji Phonejack Stereo SW Right J2 Phonejack Stereo SW GND_Left LEFT GND Right RIGHT C1 C2 C3 4 22 Chassis Bone J3 Phonejack Stereo SW GND Bone BONE C5 C6 100p 22n 100p 22n 100p Chassis Chassis Model 071 InsertMask Model 093 Pat Respose Phonejack Stereo SW INS R1 R2 NP PAT RES INS R4 NP gt 5V C7 9 22 100p NP Chassis CO1 GND INS 2 5 GND Bone GND Bone 1 BONE BONE 2 GND_Right GND_Right 3 RIGHT 4 GND Left 5 LEFT 6 NP 8pol Mainboard 071 MX2 Model 071 NP Model 093 NP Mainboard 093 MX1 Model 071 Pat Response Model 093 NP J5 Phonejack Stereo SW 5V PAT RES C10 C11 22n 22n Chassis 5V PAT RES Mainboard 071 MX1 Display Board 093 MX3 I Chassis Presskrue 3mm Lodde 2 Interacoustics A S Title Rear Panel 071 093 69011301 Sheet 1 of 1 Drawingno D02002901 071 Page 18 Approved TKJ NP Not Present Component Index and Partlist a cot Quantity Part Reference RO nm 1 2 C1 C5 C7 C10 C11 C2 C4 C6 C8 J1 J2 J3 J5 R1 R3 230 po C8 Part Number 65651 60658 59751 42457 42455 60120 60324 CO2 Value Toler
18. 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 14 Printer after test Off Set up item 15 Printer 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 th
19. lt lt lt lt 5 lt lt ES ano GND R48 dei 4 9 9 did sie dams 301 R49 12468 10K 9 51 21 EA 9 9 59 5 3 21 5 740604 o oo 4 4 gt C2 MI C IMI IC 5 VDD1 10K ns 1 46 10 74 4 DSP CONTROL BUS 0 6 MP9 I046C 740004 0 reset reset 4 GND 0 s d R AOL 2 dai R69 NP R AiL H 25 0 3 0 10V R A4L des R ASL R70 NP n ABL 72 da7 GND jm 8 6 rom 6 da9 R55 moa L I 0 5V 8 ADDR 0 19 R HZ Pagal R DiL H Np 5 5 n Dal 20 11 DSL 9912 8 9813 VDD1 IC21 R REFOUT RA 18 R D7L 24 Bets REFIN nse MIC PRE AMP gt gt E d dms dc6 4 75 SCLK 4 Paget 2 CSR CSL 2 d wr dc4 SEIN 50 RWR R WL cspsP gt 45 BUSYR BUSYL es IRQ2 det SYNC isl OER OEL C40 VOUTB DCATT 2 Paged CLR 100u VDD1 anoa ia SR Temi 50 GND i 7 BIN COMP 88 3 VDD GND GND GND 2 18 uar C39 IDT7130SA20J N3 NP 100n C64 C65 DGND AGND MIC C41 100n 0 15 vss 220n R66 20 C i D25 D26 GND 2096 10K GND AD7249 NP LL4148 LL4148 T GND C66 067 GND 100 7 10u 20 rate VEE1 POWER SUPPLY CONNECTIONS _ I I Digital VDD 45V GND Interacoustics A S An
20. mark Standards Power Fuses Operation environment Transport temperature Storage temperature Warm up time Functions Signal sources Inputs Outputs Patient Communication Attenuator Tone Switch Tone presentation Auto Threshold B k sy Buzzer Special test types The CE mark indicates that Interacoustics A S meets the requirements of Annex Il of the Medical Device Directive 93 42 EEC Approval of the quality system is made by T V identification no 0123 Safety EMC Audiometer IEC 60601 1 Class I Type B using UPS400 external power supply IEC 60601 1 2 IEC 60645 1 ANSI S3 6 Type 3 Tone audiometer UPS400 External power supply See description in separate Service Manual 2xT1A 1xT2A located on PCB Temperature Rel Humidity 20 50 C 0 50 C 15 35 30 90 3 minutes at room temperature 20 C Tone Masking Pat response Power UPS400 Earphone Right Left Bone conductor Insert masking phone MTP10 Printer RS232 Talk Forward 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 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 us
21. 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 OR resistors due to intermittent measurement errors after introducing lead free 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
22. 0 IC3 IC32 IC4 IC5 IC6 IC7 IC8 IC33 IC34 IC39 IC40 IC41 J1 R13 R14 R54 R71 R72 R162 R163 L1 L2 L3 L4 L5 L6 L7 L8 LS1 MP1 MP2 MP3 MP4 MP5 MP6 MP7 MP8 MP9 MP10 MP11 MX1 MX4 MX2 MX3 MX5 P1 P2 P3 P5 P4 P6 P7 P8 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 R17 R148 R18 R19 R20 R21 R22 R23 R24 R25 R26 R64 R65 R92 R109 R114 R154 R155 R27 R53 R61 R29 R30 R47 R33 R34 R35 R36 R37 R38 R42 R43 R44 R45 Part Number 62000101 62002601 62000201 62000301 62000401 62000901 62000501 72000101 62000601 62031601 62000801 62000701 62001001 62001101 62001201 62001401 62002101 72700501 62001701 62002901 72000201 62008801 62001601 62002201 62002301 60400101 60204701 76300501 74000101 75800201 75801101 75800601 75810901 73400101 73400201 63400201 63400301 63403101 60400201 60401401 60400901 60401101 60401801 60401701 60402501 70100101 60402601 60425201 60402801 Value Tolerance Earthgnd Earthgnd 280180 284 20 5450V 4070 74HC04 74HC4040 ADSP 2184 27C010 IDT7130SA20J OP27 PCM3001 OP275 AD7249 THAT2181S SSM2404 TL7705A SSM2402 CBAR D8 74HC138 93C66A M27C4001 6264 4051 MAX202 MC14490 0 196 0 196 MEB 12C 5 MP 4pol 8pol 6pol 10pol 4K7 10K 5K 1K 50K 10K 1 301 1 2K 1 4K75 1 200 1 100K 1 47K5 1 22K 5 10M 1 82R5 1
23. 182 1 AD226 Service Manual 16 Quantity Part Reference AAS po 00 846 R56 R57 R58 R59 R60 R63 R68 R96 8118 8121 R124 R131 R132 R157 R62 R67 R127 R130 R144 R77 R78 R99 R100 R79 R80 R101 R102 R81 R103 R82 R104 R83 R105 R125 R128 R142 R85 R107 R86 R89 R108 R111 R87 R110 R88 R160 R90 R112 R91 R113 R93 R115 R94 R116 R119 R122 R120 R123 R126 R129 R143 R133 R159 R134 R135 R146 R158 R136 R138 R140 R141 R156 R137 R139 R145 R149 R150 RL1 RL2 S1 S2 S3 54 S5 S6 S7 S8 S9 513 514 515 12 516 517 SW1 T1 T2 T10 T3 T5 T8 T4 T6 T9 T7 V1 V2 V3 X1 X3 X2 Part Number 70106101 60403601 60420301 60401301 60403001 60403101 60403201 60403301 60400701 60403401 60402401 60403501 60402701 60403701 60403801 60403901 60404001 60400801 60401601 60401201 60400401 60400301 60401901 60402301 60416601 70121901 64500101 36302001 51000301 73900101 Dummy 64600101 64600401 64600201 64600301 62002701 64300101 64300201 64300301 63201401 63201501 Value Tolerance 5R6 5 1K 1 49K9 196 10 196 4K99 196 5K36 196 30K1 196 44K2 196 3K01 1 3K40 1 18K2 1 3K92 196 243K 196 1K1 196 2K21 196 13K3 196 10K5 196 14K3 196 1K3 196 100 196 82K5 196 21K 196 1K5 196 12K4 196 1K96 196 1K SMD11A05 SW PUSHBUTTON XA4 CODESWITCH DIGITAST SYM BC857 BC847
24. 2 dd22 R57 1K 18 8131 1K 5 GND C33 16 67 C34 L1 wx t 2 18 ae dd21_ R58 eno 9 63 gt GND 22p 22p dd20 R59 1K ddi6 R60 1K GND 5 5 GND 100n GND gt end C128 10 ity L Page4 4 4 4 4 8 R OUT i Page4 18 VDD C53 x C55 82822222222 BiSa azaay 100 C46E 470p VoutL gt 6600000000 74HC04 5 E Cin L X 9 4 dd23 R27 VoutR RESET is 88 28 28 010904 25 04 200 C60 407 20 4 9H 54 BR GND GND E 95 Ber 3 18 61 4u7 20 VREF DSP 02 5 psp det 24 TOMS 4 dc6 BMS IC45 GND EE Cin 85 CMS CI 1 3 470p 23 pus Ed 5 dc4 9 6 fo Cin R WR Q3 C129 in dc3 0 RD mH RST a4 dd 1015 Q5 e VinR 0 VDD 2 7 06 4 1 R28 10K 29 TROL1 PF6 Q7 GND 105 VDD 4 IRQLO PF5 26 4 Q9 16 LRCIN DGND R29 100K p 88 ors Q10 BCKIN GND lt 89 2 GND Q11 DIN VccADC R30 100K PFI MODE Bj Q12 DOUT GND 4 94 GND 74 4040 3 28 pore pane R47 100K GND lt 91 PWD are 10k 98 PWDACK lagu o8 BG VccDAC VDD T 8 520015221244124 640 EMT 50259 749604 FMT2 GNDDAC VDD gt C lt lt lt lt lt lt lt lt lt lt lt lt lt
25. 2 volt Data Format Data transmitted to the audiometer is and must be asynchronously and consist of 1 start bit 8 data bits 1 parity bit 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 I 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 Data from PC to instrument Strobe High CTS Low T Packed vrith one byte High Rx High DSR Low High DTR Low Data from instrument to PC High CTS Packed vrith one byte DSE Strobe data are measured on the ICF69 cable and seen from the instrument The transmission is with Handshake on Transmission Figure 1 AD22
26. 3 M 220 CONTRI 0 8 2 20 20 age VDDA 12 si T C124 GND 220n C113 V55 x GND C127 T6 20 8130 100 vue MJD127 10 INH 100n BONE jen VEE1 GND VEE1 V GND GND R142 3K01 GND c VDD1 4051 C130 100p 1 A 0820 MJD122 C132 Page 0528 gt C131 22p 5 KK a OS2A VDD1 C135 100n GND 1 BONE OUT 1 GND C134 220 20 C133 V 220n GND 20 8144 VDD1 MJD127 10 GND BONE 100n V VEE1 GND VEE1 V GND 10 5 C137 7 Paget TXAO 6 XD 8145 1K96 Page 8150 L INSERT Page1 RXAO 3 DD CTSO 2 ND E 1 n 2 6152 pu 10 100n 2 53 GND INS OUT C154 MAX202 Ci53 tu 10 tu GND OP27 10 4 GND C139 V GND_INSERT GND GND V 100n GND VDD VDD1 GND C140 C141 C142 100 100 100 nd ud n n men eese VDD1 VDDA 4 Hr Chassis GND GND VEE1 POWER SUPPLY CONNECTIONS _ 100n MX3 Digital MP10 From gt VDD1 Supply VDD 5V ciso GND 5 gt GND ND 4 i External 4 VEE 9 m chassis gt VDD Power 2 Analog VDD1 12V GND Interacoustics A S 1 Supply VDDA 5V Supply SO ct Hes 1 12 GND GND lt t Construction 091098 me 100n Revision 030506 PSC HBJ NP Not Present Title Mainboard 071 Partno 69011001 Draw
27. 5 1 Narrow band noise electrically measured SPL IEC 60645 1 White noise electrically measured Survey of reference values for pure tone audiometer calibration ISO 389 1 ANSI S3 6 ISO 389 4 TDH39 TDH39 NB masking dB re 20 Hz dB re 20 dB re 20 1000 1500 _ 2000 _ 3000 ISO 389 3 ANSI S3 6 ISO 8798 ISO 7566 ISO 389 2 ISO 389 7 ISO 389 7 Free field Diffuse field Insert FF FF ia EI _2 ss Coupler 555 used by calibration TDH39 is calibrated using 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 TDH39 with EAR Tone 3A MX41 AR or PN 51 cushion Hz dB 125 160 200 4 60 759 __ ___ 800 1500 __ ___ 3 O 400 32 500 600 6300 26 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 b
28. 6 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 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 Data packet from a Slave device 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 Description Code Hex Description Start of TeXt Group Separator End Of Transmission Record Separator Start Of Header Shift In Shift Out Control Codes Table 1 A datapacket from a Master will look like this with all IL control c
29. IN 5 5 08 M 617725 238158 VaN 5 p 0 6 E3cei VI N mE 1 59 L5 298146 NO 7 core NUT ES 0 Re 00 005 IC16 80 5 R117 N IC41 DOS C3R 03 c R137 ca cones MC 14490 s HS OY 19 s upo LD Dco 5 IC10 ICB MPS Q Q P5 6170 284220 OH C3C62 74HC138 me 0 8 05 5 D 5 878 o 2 mcn 634 gp of Rei 5 n 0 A E RIS 703 4 517 R3 C94 30 m SUE 00 0 NO USES 3256 te jos Hal R370 RED 0 gt lt E 5 C220 ES o EJE 5 65 JE OF gt lt 8 1 74HC4040 ADSP 2184 807249 gt C 659 Bg 0 55 C49 C 10165 3 85325 22895955 015 amp 517 217 INA 2 coin m R490 1 Jg Dis c a 000 ese hs dg PES 44 R410 RISO S16 14 18 74604 C3C42 IPA26 Option printer adapter for printer is mounted IBM mode in the RC1 socket Cocis Cocig Printboard is fixed by means of a strap placed under ave the RC socket on the mainboard 18125 22 Coral X1 12 0000 00000 19 25 CRI Risto IC1 1B0180 5725 T ICA bo d
30. Receive Data from Instrument In the following you will find our receiving routine laRs232Receiv int idComDev char FAR dest unsigned int max unsigned int i first 0 NrOfByte long millisec COMSTAT comstat dest 0 NrOfByte 0 while 1 millisec GetTickCount while GetTickCount millisec lt 10000 try in 3000 mSec GetCommkError idComDev amp comstat if comstat cbInQue gt 0 break if comstat cbInQue 0 return FALSE ReadComm idComDev dest 1 if NrOfByte max return FALSE NrOfByte first 1 for i 0 i lt DIROFF i Acknowledge EscapeCommFunction idComDev CLRDTR EscapeCommFunction idComDev SETDTR if dest EOT dest CR dest else for i 0 i lt 10 i dest 0 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 th
31. Service Manual Diagnostic Audiometer AD226 Part number 80671106 Valid from serial no 746702 Contents eni me E 1 General Technical Specifications sa sn assa aa 2 Specification of input output connections 3 Galibrati ri propertl8s itid reine De eio ce haat Lema Rer etf pt o tn 4 Survey of reference values for pure tone audiometer calibration 4 E 2 _ _ 6 Electrical Assembling 2 110 _____ _ _ _ __ _ __ _ 6 Idi ERE 7 Block Diagrami EE 7 Tre PIC A 8 Component NAEK 13 Keys Led 14 15 Gonnector Board A 18 Component Index and str ettet enne 19 20 Component Index and
32. 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 2Insert 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 Act
33. alog VBDA Revision 030506 PSC HBJ Supply GND 0V Tile Mainboard 071 Parno 69011001 Sheet 3 5 Not Present Drawingno 002003702 Page 10 IC25D VREF DAC iu 10 C83 890 Het SSM2404 Pagel IC25B C157 100p 1 tS 9 100n N6 GND C85 100p 196 891 2M21 8447 GND SSM2404 1 2 992290 IC25A VDD1 C76 Oo060007 SSM2404 10K 100n C2 lt lt lt lt gt 895 _1 R83 84 55 2404 Page3 10K IC238 3K01 10 V GND VEE1 GND GND ATOUT 1 5 20dB GND R94 10M5 VDD1 C68 082 100n T 10u Page3 VDD1 C171 VDD1 20 L OUT 5K36 100 C167 100n T A 1 100 R136 a C80 IC22A GND R79 196 1K5 C163 R81 io 1 u a Hiss R137 100 ST 20 66275 5M36 30 VREF DSP 71 070 C24 IC43 C69 10n V 12 4 THAT2181S MP6 4K99 5 GND C169 100n GND 10n V VEE1 GND 57 5 GND GND VEE1 GND GND C79 GND 100n y C81 47p 596 VEE1 VREF DAC Offset B IC30D A iu 1096 2 VDD1 e
34. ance Labels 22n 1096 100p 196 8pol 4pol Phone jack Stereo SW 0 196 AD226 Service Manual 19 Mainboard 071 RC3 N3 N5 N2 N4 M1 N11 N12 N14 N15 N17 N18 Mainboard 093 NP 49 1 79 8 1 x 0 CO f 10 00 16pol IL C26 C1 1 C27 NC C2 in C28 gt GND 3 Mainboard 071 MX3 4 12V Mainboard 093 MX4 5 GND 6 12V 1n Chassis 603 C6 1 C7 1n C8 1n c9 1n C10 1n gt Mainboard 071 MX5 Mainboard 071 MX4 Mainboard 093 MX2 Mainboard 093 MX5 C12 1n C13 1n C04 C 1000 C14 1n O 10 t C15 1n C16 1n C17 1n C18 1n C19 1n C20 1n C21 1n C22 1n C23 1n C24 1n C25 1n Chassis Chassis Chassis CO6 9pol CO7 900 RS232 Model 041 PRINTER Chassis Chassis Chassis Chassis Interacoustics A S Chassis Chassis Dae Const Approved Revision TK Title Rear Panel B 071 093 Partno 69011401 Sheet 1 of 1 Present Drawingno 002003501 071 20 Component Index and Partlist Quantity Part Reference 2 A1 A2 CO OOO OOO O 43 C1 C2 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
35. atrix 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 Bone conductor Insert phones Insert masking phone Accuracies Telephonics TDH39 with a static force of 4 5N 0 5N Radioear 871 with a static force of 5 4N 0 5M E A R Tone 3A Option CIR22 Option Generally the instrument is made and calibrated to be within and better than the tolerances required in the specified audiometer standards Frequency Pure tone levels Tone calibration standards and spectral properties Pure tone Narrow band noise Spectral properties Earphones White noise Spectral properties Bone conductor Pure tone Insert phones Pure tone Narrow band noise Spectral properties White noise Spectral properties Narrow band noise Spectral properties Insert masking phone White noise Spectral properties 1 3 dB for 125 4000Hz 5 dB for 6000 8000Hz 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 24 ISO 389 4 values IEC 60645 1 Narrow band noise electrically measured SPL IEC 60645 1 White noise electrically measured ISO 389 2 ISO 389 4 values IEC 6064
36. der to get all stored data 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 Slave STX 00 US 00 US SOH GDE100 US data EOT Send EEPROM data 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 STX 00 US 00 US SO SPKY00 US 101 US EOT Switch to Tone audiogram Slave Nothing AD226 Service Manual Appendix A 9 Ex 4 Getting all relevant subject data from the AD226 Master Slave STX 00 US 00 US SI SOH SGGAO00 US EOT Ask for all data STX 00 US 00 US SOH SGGAOO0 US data EOT Send relevant data Ex 5 Getting data left phone from the AD226 Master Slave STX 00 US 00 US SI SOH GTLP00 US EOT Ask for data STX 00 US 00 US SOH GTLPOO US EOT Send relevant data Window Routines in C In the f
37. e 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 lev
38. e of CIR22 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 Pulse Tone is presented by activation of Tone Switch Tone is interrupted by activation of Tone Switch 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 With automatic score calculation 5 dB included for familiarisation Stenger Binaural pure tone or speech stimulation AD226 Service Manual 2 Langenbeck Tone in noise Store When activated t
39. e type of bone conductor used The choices are B71 amp A20 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 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 Right Display shows Right Display shows gt Right 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 20 Bone output Bone Set up item 21 Bone Masking 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 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
40. el 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 GB 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 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 12 Bekesy Curve to Print Is used to select what curve or curves that will
41. ency US dB US frequency US GTIMO5 frequency US masking US frequency US Insert Masking Table 5 Left Bone Header Description Format GTLBOO Hearing Level frequency US dB US frequency US GTLB05 frequency US masking US frequency US Left Bone Table 6 Left Phone Header Description Format Hearing Level Frequency US dB US frequency US GSLPO01 Left Phone UCL Frequency US dB US frequency US GTLPO05 Frequency US masking US frequency US Left phone Table 7 AD226 Service Manual Appendix A 4 Right Bone Header Description Format GTRBOO Hearing Level Frequency US dB US frequency US GTRBO05 Frequency US masking US frequency US Right phone Table 8 Header Description Format 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 GTLPOO and GTRPOO 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 ATBLOO Bekesy test left 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 GB etc ATBROO Bekesy test right tone Tone Type US US M F US Freq US dB US GS Tone Type US L H US M F US Freq US dB etc ATBLO1 Bekesy test left average tone L H US Freq US dB US Freq US dB US GS
42. er 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 3 Adjust P3 until the AC voltmeter shows exactly 20 dB more than V1 Notice the output V2 4 Press Frequency Decr and the display will show
43. he 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 Synchronous Locks Channel 2 attenuator to Channel 1 attenuator Masking Channel 2 options Output of Channel 2 can be set up to be either Narrow Band or White noise Frequencies and maximum intensities Frequency Air conduction Bone Insert conduction Masking TDH39 EAR Tone NB WN 3A dB HL dB HL dB HL dB HL Specification of input output connections Inputs Connector type Electrical properties Power UPS400 DIN 5 pole Pin 1 and 2 0V Pin 3 45V Pin 4 12V Pin 5 12V Patient response Jack 6 3mm stereo Handheld switch Switches 5V to the logic input The switch current is 40mA Outputs Phones Left Right Jack 6 3mm mono Voltage Up to 5 5V rms by 100 load Min load impedance 50 Bone conductor Jack 6 3mm mono As for Phones Left Right Insert masking Jack 6 3mm mono Voltage Up to 5 5V rms by 1000 load phone Min load impedance 1000 Data I O RS232C 9 pole Cannon RS232 serial port for See appendix A in service manual for detailed communication information MTP10 9 pole Cannon Serial port For use of MTP10 as printing device Printer 25 pole Cannon Parallel port 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 M
44. ingno D02003702 Sheet 5 of 5 Page 12 Component Index R130 70125 4 2 127 R1290 50124 20 08 C1110 22 T 80 SW SN E110 12 ca R123 R113 2 115 0103 1050 NE SSM2404 32104 21163 core R1140 ais _ IC26 ces 5 M S cas SN I 20 0 2 7 INO 0 8s R710 cores Cocio1 R NE IC25 CV SSM2404 71084 20 PES EN C 90 N M7 M8 C94 oc zu 5 g MASET _ 19 ne dm MID127 20 ECT D T5 m1122 5 71 M 0122 R162 og R163 0 ohm R161 This 4 resistor C1330 C1370 1 158 208 00 cs SMD11A05 Bm E 51213 E C501235 R1280 ui 20 0113 0 0 ap27 9 S 9 Eu 2 IC52 1051 5 D a us CIR156 IC42 184 20 og R164 NP nat mount at the same time IC11 184C20 IC9 184C20 C C15 C21 2003 R170 2 0 LP2957 RE2 N C3R amp 2 23 Imp R25C3 paca ceca NO z ER its C3R20 R45 25 R430 2822 coc T C32C M2704001 20 R120 Coc 1 2851 CIR32 x 14007 0 NE 02 e 2 RIS Se B Cm RCS 0 30166 22 0 50 criss d V
45. is manual for format description SGMEO0 Active Menu US Submenu US 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 Ch2three 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 Pure Tone 100 PueTone 120 V 16 Wabe 126 Narrow Band Noise 123 21 White Noise 124 Input codes Table 17 Output Output Channel 1 Code Output Channel 2 Code Phone Right 140 PhoneLeft 161 InsertLeft 143 PhoneRight 160 Insert Right 142 I
46. ivate 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 2 Activate STORE 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 Pin number Pin number 2 Received data RXD 3 3 Transmitted data TXD 2 5 Clear To Send CTS 8 6 Data Set Ready DSR 6 7 Signal Ground 5 20 Data Terminal Ready DTR 4 Logic Levels Data Mark 1 12 volt Space 0 12 volt Control On 12 volt Off 1
47. ixed 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 1 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 GDIDOO Identification RS232 version GDIDO1 Brand name US Program Version US GDIDO2 DSP program version 901004 0226 US Program Version US Information Table 12 Difference on GDIDO1 and GDIDO4 is that GDIDO1 returns with the brand name that can be changed by user and 901004 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 SPKYOO 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 SPKYOO is shown below Header Description Format SPKYOO Remote command for the AD226 Code US Set key command Table 13 Keys are grouped the following way AD226 Service Manual Appendix A 6 Key Key name Code Key name Tone warble Autotest Synch 4
48. king OS2A OS2B VDD Pat Response n n Orange GND HBEHBBHBH 77 Angel Adjust Green VDD N Tone On m 509803080 Interacoustics a s Title AD226 Blockdiagram Document Number xd bl 0005 00001 Sheet 1 of 1 Rev MBA Date Wednesday April 12 2000 Page AD226 Service Manual 7 VDD VDD 816 10K IC11 gt 1 Page4 Do PAO dB1A 90 DO PAO TSW do 2 PD 18 gt M1 1 D1 PAI dB1B D1 Appa SHIFT Page E 4 ___ 2 1 02 PA2 LCLK Page2 D2 46 46 paz 15 420dB 2 Pages 1 14 S 1 Page4 SDATA Page2 43 __44 ge 43 03 OD __ _2 Page4 04 pag HH ROWO 8 PD4 PA5 AA1 2 Page4 3 05 5 ROW1 Page2 4 PA6 gt AA2 2 Page4 D6 PA6 ROW2 46 3 m gt AA3_2 Page4 D7 PA7 ROW3 97 T ARDY 20 Rete 19 VDD PBO gt OSiA Page5 dB2A 2 amp 15 RC3 16 age
49. nsettleft 163 Bone Right 171 Insert Right 162 Bone Left 170 InsertMaskng 165 Output codes Table 18 Active Menu and Submenu Here is a table with a list of menus and submenus Active Menu Code Submenu Code Tone Menu 101 88 H W Test H W Trainer Setup Menu Show Data SISI Bekesy Test Bekesy Trainer OSHA OSHA Trainer Menu codes Table 19 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 Init the instrument using the SPKYOO Header Use the 5 8500 to get running information about the status of the instrument if the store flag in the SGRSOO shows 1 send a SGGAO0 header in or
50. odes 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 itis 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 Description Format GTF100 Hearing Level frequency US dB US frequency US GTF105 frequency US masking US frequency US Free Field 1 Table 3 Free Field 2 Header Description Format GTF200 Hearing Level frequency US dB US frequency US GTF205 frequency US masking US frequency US Free Field 2 Table 4 Insert Masking Header Description Format GTIMOO Hearing Level frequ
51. ollowing 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 laRs232Transm int idComDev char FAR source DWORD num unsigned int i int RetVal char FAR modem_status long millisec 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 lt num i source millisec GetTickCount while GetTickCount millisec lt 5000 Wait max 5 sec on CTS if modem_status amp 0x10 CTS is bit modem status register break if modem_status amp 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 2 GetTickCount while GetTickCount millisec 5000 if GetCommEventMask idComDev EV CTS EV CTS AD226 Service Manual Appendix A 10 RetVal TRUE break if RetVal FALSE return FALSE return T RUE
52. on 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 33 OSHA Stimuli Tone Set up Item 34 Delete Key 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 35 Phone Selection TDH39 Set up item 36 DSP Version This register cannot be changed but it tells
53. y Interacoustics Questions about representatives and products may be sent to Interacoustics A S Phone 45 63713555 Drejervaenget 8 Fax 45 63713522 DK 5610 Assens email info interacoustics com Denmark http www interacoustics com AD226 Service Manual 5 Disassembly Electrical Assembling Instrument 106013601 AD226 Service Manual 6 Schematics Block Diagram Talk Forward STEREO CODEC PCM3001 12KHz LPF 12KHz LPF AA X X CHANNEL No 3210 0000 20dB 0001 0dB 0010 5 0100 10dB 1000 15dB DUAL DAC AD7249 DUAL PORT RAM 0 12008 ATT 0 20dB FIX ATT 0 S X X CHANNEL NO CBA 000 Left 001 Right 010 Bone 011 Insert Masking 100 FF1 101 FF2 110 1 1 AA2 1 1 0 12008 ATT 0 20dB FIX ATT 2 2 2 2 AM 2 85232 MTP10 PRINTER PARALLEL PRINTER EEPROM 111 Reset Left OUTPUT SWITCH CH1 e Right OS1A 0518 IC61 5450 KEYBOARD LIGHT Brightness Control KEYBOARD Q TONE SWITCH OUTPUT SWITCH CH2 Insert 4 Mas
Download Pdf Manuals
Related Search