Home

Service Manual

1. 15 _____ _ _______ ______ 15 Fed Atentado ecd CUM 16 SOMW are 17 Prope 05 5105 17 __ 18 Probe TOME TERME 18 C INDA 19 Probe Real MOQUE 20 21 N aces 20 a a 22 FAS INTOMMAOM 9 22 Speech Input Amplifier Adjustment 23 Factory calibration 23 ACCOSSOLTIOS cnius a 24 GONSUMAaP e AE TITRES 28 Spalte 5 30 OD LITE UST ES 33 6 18 39 Go a ic MER one 39 Pump T UDe Repa eC MR 34 Electrical Assembling 35 Rear Panel ies heed do
2. Earphones Calibration signal 20 00238 195 195 22 NSO coupler masking Bone conductor Calibration signal NS 55 NS 55 NS 55 NS 55 IEC 373 Speech weighted NS 55 NS 55 NS 55 NS 55 coupler masking Loudspeaker Calibration signal 20 145 145 0 Speech weighted 20 14 5 14 5 NS 0 masking Insert phones Calibration signa NSO 25 E coupler coupler masking NS Not Standardised Values in brackets are used by factory calibration Values for Germany AA222 Service manual page 9 Coupler types used by calibration 0 9 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 General properties for earphones Sound attenuation values for earphones Difference between free field and coupler sensitivity levels Used by Free Field equivalent earphone output Type A E or B E Attenuation Frequency TDH39 with TDH39 with MX41 AR or PN MX41 AR or PN 51 51 cushion using IEC 303 cushion coupler AA222 Service manual page 10 Output voltages regulated Voltage Cont current A Peak current A DENEN Gnd 05 10 ____07 30 0 5 0 7 LO Jp 45 Pinno 2 4 5 View on output pins
3. eism 3 Advanced Audiometry User 5 Letter Printout Error Internal 6 Storing Restoring the 6 Appendix AA222 U Update News EE sk Yoon a oaa Y bonn Loire under etur ciere 1 AA222 Service manual page 2 General Technical Specifications Medical CE mark Standards Power 5400 Operation environment Storing handling Warm up time The CE mark indicates that Interacoustics A S meets the requirements of Annex of the Medical Device Directive 93 42 Approval of the quality system is made by identification no 0123 Safety EMC Impedance Audiometer Consumption Mains voltages and fuses Temperature Rel Humidity Impedance Measuring System Probe tone Air pressure Compliance Test types Indicators Memory Frequency Level Control Indicator Range Pressure limitation Pressure change rate Range Tympanometry Eustachian Tube Function Graphical display Tympanometry Eustachian Tube Function Reflex and Audiometer Functions Signal sources Inputs Outputs Tone Contra Reflex Tone Audiometry Tone Ipsi Reflex Noise Contra Reflex Noise Ipsi Reflex Masking CD1 2 Mic Talk Back Patient Response Earphone Right Left Free Field 1 and 2 Monitor Contra Earpho
4. 500 US EOT Calculate new checksum Slave Nothing Ex 3 Setting a key or menu in the Instrument Master STX 00 US 00 US SO SOH SPKYOO US 12001 US EOT Select Setup menu Slave Nothing Ex 4 Getting all relevant subject data from the Instrument Master STX 00 US 00 US SI SOH 5 US EOT Ask for all data Slave STX 00 US 00 US SOH 5 US EOT STX 00 US Send all stored subject data 00 US SOH SGGAO0 US data EOT STX 00 US 00 US between aB lock Start and US EOT Block End Ex 5 Getting data left phone from the Instrument Master STX 00 US 00 US SI SOH GTLPOO US EOT Ask for data Slave STX 00 US 00 US SOH GTLPOO US data EOT Send left phone data Online Communication The AA222 is capable to send information to the PC whenever things change in the instrument and when data is obtained from the probe The online communication is enabled from the PC because it only is used together with a PC The Online Communication is not completely implemented yet so subject to change Header Description Format OLENOO _ Enable online communication OLDIOO Disable online communication Lo How the instrument works When the AA222 is doing its normal measurements it is running in automated mode where everything is preset That why the menu is called Auto impedance There are three screens in this mode One where all inf
5. c e 452 m LJ M n eo N n e AD m gt Title 69010807 001000205 Drawingnn AA222 Service manual page 40 Components Index Top side D01007001 5 2 MB o o RS M2 Interacoustics A S Dte Constr Approved Revision 081205 Title Transducer Board 050 051 eve 89009601 Drawingno 001007001 Bottom side D01007101 Interacoustics A S mate temer Approved Construction 031199 AM HBJ Revision 08105 Tite Transducer Board 050 051 59009501 Dramwingno 001007101 AA222 Service manual 41 Appendix A Description of Serial Interface General Specification The Serial interface is designed to transmit data from the audiometer to a computer and to control the audiometer from a computer The Baud rate is 38400 B S and the data format is 8 data bits Even parity and one stop bit Installing the USB Driver on the PC Connect the Instrument to the PC with a USB cable and turn on the instrument the following window should appear The Driver is available from Windows Update if the PC is connected to the internet or it can be found on the CD with the operation manual Found New Hardware Wizard Welcome to the Found New Hardware Wizard Windows
6. Auto Bone Right Bone Left Ch2 Off CD 1 2 CD 1 CD 2 Monitor Talkback Monitor Talkback FF 1 and 2 FF 1 FF 2 Store No Response Extended Range Print Screen New Subject Error Analog changes Header Description Format OLANOG Input Changed Input tyoe US Channel US EOT OLANO1 Intensity Changed Intensity dB US Channel US EOT OLANO7 Plus 20 dB Changed Status US Channel US EOT OLANO8 Interrupter Changed Status US Channel US EOT OLANOY Output Changed Output type US Channel US EOT OLAN10O Transducer Changed Transducer type US Channel US EOT This is what strings the instrument can send when it sends the OLANO6 Input Changed header 1257 250 750 1000 1500 2000 3000 4000 6000 8000 WN LP HP SN 1 CD 2 226 678 800 1000 Probe Talk Forward Talk Back No Input 30000 Error 30000 Means no data AA222 Appendix A page 17 This is what strings the instrument can send when it sends the OLANO7 Plus 20 dB Changed header Off Internal External Error Internal means that the plus 20 dB step is switched on and can not be changed by pressing the Extended Range key External means that the plus 20 dB step can be switched on of by
7. Cable 13 WHT BLEK BRN RED to FF2 Details see right Printer unit QS ORG gt V 7 YEL lt 3 MS sw 2 SW Og 3 W1 GRN Toprinter unit Rear Panel To air reservoir AA222 Service manual page 35 Rear Panel Connections BLU BLU YEL Cable 2 ORG ORG BLU ORG YEL Cable 4 a gt gt Y J Power Supply 5 Probe GRN Cabinet Rear side Connections RC1 Cable 8 RED Shielded wires SW Shield wire ORG W1 signal colour 1 RED W2 Signal colour 2 BLU 8 CO1 CO6 1 W1 RED 2 W2 BLU 3 SW Keyboard BR AA222 Service manual page 36 Transducer Wire and Tube Connections Wire Connections M8 M7 BLK WHT M6 M5 BLU GRN Dark green Pale pink x Beige lt Violet Transducer PCB 66905 Orange Pale blue 9 4 2 R4 R21 lt N1 N13 N2 N4 v N N N9 M2 M1 RED BRN Jade green Dark red Yellow Black White Chocking pink SubD 15pol male connections Press 5 8 Dark red 3 LED R LED B Orang f pmp Black shield wires Probe
8. Reflex Test method is Fixed Figure 19 Navigating and changing in the Table Use the 4 arrow keys to move the bar in the table You can use change to select another option for a given item but you may also use the dedicated keys as well If for an example you want to change the level you can use the dB keys instead of the Change F1 See Figure 6 Setur Setur menu for Reflex Test H Reflex method Fixed Ci Out 1 Iesi sti 500 1000 2000 sono 3000 4000 so en so on on F1 F2 F3 F4 F5 F6 Back Reflex Table Figure 20 AA222 Appendix B page B4 Following figure is equal to factory settings for Reflex Test A Setur Setur menu for Reflex Test Reflexes Fr sequence 2 Level increase 10 dB aeneral drifting 1 Test stor criteria Automatic Reflex sensitivity Hormal Reflex Test A Figure 21 Following figure is equal to factory settings for Reflex Test B Setur Setur menu Reflex Test Reflex method Auto Sterz Reflex sensitivity Hormal 2 ES Tesi Irsi sti soo 1000 2000 4000 3000 uN 80 80 80 80 on on on on Reflex Test B Figure 22 Output
9. General about Specifications 1 0 0 1 5 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 guaranteed if it is subject to a technical maintenance at least once a year This should be made by a workshop authorized by 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 www interacoustics com AA222 Service manual page 11 Noise characteristics Wide band noise WB low pass noise LP and high pass noise is use for reflex stimuli And wide noise WN is used for masking WB 500Hz high pass filter Freq Hz 500 10k LP 500 1600Hz band pass filter Freq Hz 500 1600 10k HP 1600 10kHz band pass filter Freq Hz 500 1600 10k WN 0 10kHz low pass filter Freq Hz 500 1600 10k AA222 Service manual page 12 Calibration Procedure General Information Service Adjustment and Repair This instrument can be serviced adjusted and repaired without losing the validity of the CE marking provided the measuring equipment used is fulfilling the demands below the adjustment procedure are followed and the personnel is having the necessary qualifications approved by Interacoustics Before a
10. SE Dae Appr PRINTER eee 12V 24V PRINTER PRN240 INTERNAL SEC C anno Interacoustics NP Not Present zu Drawingno D02018701 AA222 Service manual page 39 Components Index C249 DJ LABEL 5 0 LABEL HMD 91230 gozu 3 TUB El Jl m N 191 999 1 C348 41 C343 O A 495 gt 3 79555 0 08 m m R357 1358 12115 1 198 Co us CO7 8 a gt n u m n D e 5 L R130 L3R131 Lis fe 81290 1 161 0 El ED FH ae get 12 pn E 20 anc 08 0 E E a 2 u TT actor m T NE gra 55 Ce ms a Sm HER 2 5 i LEE LJ g Al 00 E 14 25 sun ad 4 y N F c 2 gt 0 5290 2 T E it x BEES 08 C1 Ost 5021 7 N 3 N
11. a a a 12 se ______ 13 ONNE COMMU Call OM 16 HOW Ihe ____ _ 6_6_6___ _ nbi ra o DEDERE 16 5 OE 20 18100114 WINDOWS 20 Appendix B User Set up in the 222 1 SOUP NAVIGATION ec 1 2 Up Rellk TESIS 2 48 822 A 4 Audiometry toda 11 12 TestAudiomeltry SeCup MGA Pa 20240540 14 15 a 17 Appendix C Advanced User Setup 1 Advaticed USSE k 1 Advanced Reflex electos
12. Calibration Password Reflex Setup Headset Real Fixed Attenuator Advanced Setup EEPROM Setup Advanced Imp Setup Advanced Aud Setup Attenuator Calibration Headset Calibration Probe Calibration Pressure Calibration Compliance Calibration Probe Tone Calibration Probe Real Clinic Modify Tone Auto Impedance HW Family HW Test Manual Impedance ETF1 Ipsi Calibration Headset Options Manual Audiometry Setup Audiometry Setup Test Audiometry Setup Setup Stenger Function SISI Reset Speech 5 5 9 355 o Speech Setup Attenuator Setup Cochlear Implant Speech USA Do Reflex Do Do Test Error This is what strings the instrument can send when it sends the OLMUOS Sub Menu Changed header Extended Tymp Extended Reflex Reflex and Tymp Mixed This is what strings the instrument can send when it sends the OLKYOO Key pressed header Pause Reflex Ipsi Contra ETF Audiometry Manual Print Store Right Left F1 F2 FA F5 F6 Back High Hz Hz Incr dB Decr Ch1 dB Incr Ch1 Impedance Talk Forward Manual Auto Function Bone dB Decr Ch2 dB Decr Ch2
13. The 2 shielded wires Probe Mic Gnd are not connected to the PCB Pale blue IPSI Violet IPSI Gnd LR Lo 552525050520 Beige LED G Press1 Yellow 9 1 Tube Connections Transducer Probe Tong ssaa Remote B rown VEE vovi Grey Pale pink N12 O Grey Jade green White Mic Dark blue Chocking pink Probe Connector _ ii e S Dark green PCB We Tube Dark blue N14 O N15 Brown Tube from Cable AA222 Service manual page 37 Printer Connections UNI UNS O Q O O O O UNS o Tl du O Q J1 O Connector CN1 CN3 CN5 CN6 CN8 Jumper J1 J7 Function Thermohead Power Pin 1 2 3 4 Dete
14. length 320mm AA222 Service manual page 33 Pump Tube Replacement Loosen the spring fixing screw 1 unhook the spring 2 and the pump arm 3 can be drawn out Remove the screw 4 and the tube fixing plate is loose Spare part numbers Pump complete 56000201 Pump tube complete 56002301 After the screw and the tube fixing plate is loose the tube 5 can now be pulled out for replacement For reassembling Put in the new tube and mount the fixing plate Push in the pump arm fix with the spring and tighten the spring AA222 Service manual page 34 Electrical Assembling Instrument Flex cable connects CO9 CO15 on mainboard with CO3 CO4 on keyboard rearside Cables are mounted on keyboard before assembly Keyboard PCB 690045xx 129191 9 mmimmmimi Mainboard PCB 690108xx 24 Cable 8 3109 MEL Note Mount flexcables with colour ORG indication upside RED Michrophone sited on the Keyboard BRN under the mainboard CO20 Cable 7 YEL P 4 gt RC2 Cable 8 O19 ORG cable must be lead underneath display 14 Cable 12 ORG Cable 2 YEL BLU o BLU RED RED BLK Cable 1 2 RED W2 BLK jumper 1 NC o 3 SWHBLK W1 9
15. shift CD 1 2 keep it down a while Connection for patient response switch Response indication in the display when activated Can be selected to be either standard earphones or insert phones by pressing shift Right Left Speech output can be selected as electrically linear type B or free field equivalent Type B E using TDH39 Electrical outputs for external 2 channel power amplifier AP 12 or AP70 Monitor earphone disconnects the internal monitor loudspeaker when inserted Operator can monitor the signal when presented to the patient as well as the talk back signal from patient s microphone TDH39 or insert phones for Reflex If selected Connection for CIR22 CIR33 for masking Probe earphone incorporated in the probe system for Reflex measurements Masking in right or left earphone can be selected Connection of the air system to the probe Input output for computer communication An external PC can be made to both monitor and control the instrument The control AA222 Service manual page 3 Patient Communication Attenuator Tone Switch Tone Presentation Auto Threshold Test Types Memory Synchronous Masking Channel 2 Options Speech Level Indicator Printer Optional Keyboard Printer Talk Forward Range Manual Reverse Pulse Manual Audiometry Automatic Audiometry Manual Reflex Reflex Decay SISI Warble Stenger ABLB Type Paper with Printing time actions c
16. 60645 2 ANSI S3 6 or STAFF 60645 2 ANSI 53 6 or STAFF EN 60645 2 Masking sound 1 The speech calibration signal recommended by EN 60645 2 type B E calibration can be track 32 from Westra CD no 1 By calibration of ANSI and EN 60645 2 type B a 1000HZ sine tone is used AA222 Service manual page 8 Table 3 PM Reference values for stimulus and audiometer calibration ISO 389 1 ANSI 53 6 ISO 389 4 ISO 389 3 ISO 389 2 150 389 7 ISO 389 7 Interacoustics Standard ISO 8798 ISO 7566 Free field Diffuse field TDH39 TDH39 masking Insert TDH39 20 20 20 1uN 20 uPa 20 20 uPa 20 20 20 ap 7255 255 4 9 6 4 nol 1 115 115 4 58 58 55 40 35 75s 8 _ 485 485 2 20 10 EE AARE 425 425 0 20 05 6 5 1 9 0 NE CE 6 365 365 2 05 10 1 10 6 30 30 35 60 40 ee 5 59 4 p 3 e e e o e 905 3 905 do 4 4 355 355 55 65 50 1 000 2 115 55 e WB Survey of speech reference values EN 60645 2 ANSI 3 6 STAF 1996 Type A B C Type n Type A B E
17. Factory See Table 1 Range Ipsi or contra Description Can be assigned to Ipsi or contra as output Stimuli Frequency Factory See Table 1 Range Ipsi is 500 Hz 1000 Hz 2000 Hz 3000 Hz 4000 Hz WN LP or HP Contra is 125 Hz 250 Hz 500 Hz 750 Hz 1000 Hz 1500 Hz 2000 Hz 3000 Hz 4000 Hz 6000 Hz 8000 Hz WN LP or HP Description Can assign new stimuli to Ipsi or contra AA222 Appendix B page B5 Level Factory See Table 1 Range 60 dB to Maximum depend of transducer and selected frequency Description f Reflex Method is selected to Sequence an arrow will be put after the intensity value to indicate that this is the start level In table 1 you will find that the factory test configuration will perform 4 of the 6 reflexes Setting the last row to on off depending on what you want to start with can choose this Reflex Methods The Reflex Method can be assigned to 4 different methods where three of the four methods have additional set up points In the following you can see what they do and how to set them up Fixed Setur setur menu Reflex Test A Reflex methad Fixed ESSE ES 2 iesi iesi iesi irsi sti 500 1006 2000 4000 sooo aooo om on on eft n mor Back 000000 Reflex Method Fixed Figure 23 Method description A fixed intensity reflex is one reflex taken at one intensity level like the one in Figure
18. It is possible to select a Menu with the SPKYOO command and the codes below Active Menu Code Active Menu Main 12000 Manual Audiometry 12031 Setup 12001 Impedance 12032 Common Setup 12003 Famili 12093 Subject 12007 HW Test 12034 Calibration 12009 Manual Reflex 12035 Setup 12011 ETF1 12036 Password 12012 IPSI Calibration 12037 Reflex Setup 12013 Manual Audiometry Setup 12047 Headset Real Mode 12015 Audiometer Setup 12048 Fixed Attenuator _____ 12016 Test Audiometer Setup 12049 Advanced Setup 7 12017 Impedance Setup 12050 EEPROM Setup 12018 12051 Advanced Reflex 120194 12052 Attenuator 77 12021 Function 12053 Headset Calibration 12022 5505 12054 Probe Calibration 7 12023 Talkforward 12055 Pressure Calibration 12024 Speech 12057 Compliance Calibration 12025 Speech Set up _____ 12058 Probe 12028 Clinic 12029 Tympanogram 10 Modify 4200 n 1 12 AA222 Appendix A page 12 Setup 5 The Setup Items in the Instrument can be read and written with the following header In the table below the setup items are listed with their number and value range Description GDSDOO Sets or G
19. Stepdown 10 Off 11 5 dB 18 40 dB Setup Audiometer Frequencies 125 Hz 2 25082 60 011 00 750H 8j0 Ofji On 0 0 95 Value x 50 250 10 1 dB 11 5 dB Test Audiometry Setup HWFrequendes 10 2 out of 3 11 3 out of 5 0 95 Value x 50 250 AA222 Appendix A page 14 Advanced Setup 74 LSB 12 EAR 12 Combi Enable ETF Test 0 Disable 1 Enable Height above sea level 7810 0 100m 25 2500 2599m Seal Sensitivity 80 10 Normal 11 Sensitive 12 0 20 ml 13 0 25 ml Stimuli Selection 00000000000 In steps of 5 dB In steps of 1 dB AGC for IPSI reflex stim 42 0 Off 1 Advanced Audiometry Bone Symbols 29 10 R lt and L gt 11 gt L lt Speech Mode 39 10 Standard 11 USA AA222 Appendix A page 15 Examples of Transmission All ASCII characters are separated form control codes with 44 Ex 00 means two byte each representing a zero Ex 1 Transmitting all EEPROM data from the Instrument Master STX 00 US 00 US SI 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 the PC to the Instrument Master STX 00 US 00 US SO SOH GDE100 US data EOT send EEPROM data Slave Nothing Master STX 00 US 00 US SO
20. Tone Calibration 89 dB 226 Hz 10 7 dB O dB Adiust resolution Roush 5 dB 10 to calibrate 15 Connect the probe tir to a 2 ml courler Probe Tone Calibration Figure 7 This is the menu for calibration of the different probe tones The dotted line in the bar shows the adjustment level AA222 Service manual page 18 Calibrate Probe Tone levels Follow instructions on the screen Fine F4 and Rough F5 Fine and Rough gives the resolution of the steps when adjusting the probe tone level You can see what resolution that is selected when looking at Adjust Resolution at the display Selecting Fine the resolution will be 0 1 dB and selecting Rough the resolution will be 0 5 dB Compliance Calibration LomElaince Seas dB 226 Hz 5 6 3745 4400 5200 1270 ADE 900 Feal F2 F4 F5 F6 F1 Back 000000 Compliance Calibration Figure 8 Entering this menu you need to confirm that the Probe Tone is calibrated correctly see Probe Tone Calibration If not press Exit F6 and go trough the procedures of Pressure Calibration and Probe Tone Calibration To Calibrate Compliance System Press Calib F1 and follow the instructions on the screen To Test the Probe Calibration If the probe is calibrated you can test the calibration among other things in the Probe Real Select Real F6 to enter this menu AA2
21. US frequency US intensity dB US Reflex Box number US Count Of Reflexes in the current box US Index of Reflex in the Current Box US PointsInReflex US TimeBase US EOT OLREO1 Reflex Test Done NumberOfPoints at this level US EOT Reflex Data Compliance US EOT The data pairs are transferred to the PC between the Test Start and Test Done or Test Aborted HW Measurement Header Description Format OLHWOO Header Event Event US EOT Events for HW Measurement Test Started Test Test Interrupted Test Failed Changed Ear Retest Failed Audiometry Measurement also active during HW measurement Header Description Format OLSAOO Store Information Intensity Ch1 US Frequency US Masking Intensity US Status US EOT OLPAOO Patient Response Status US EOT Status in OLSAOO can be Heard and Not Heard When using the online mode it is not advisable to use static headers that requests data to be send out of the instrument SI at the same time It will disturb the online transmissions from the instrument Most parameters send with the headers are send as text Example If the Right key is pressed the text Right is send AA222 Appendix A page 19 Cochlear Implant For measuring on patients with Cochlear Implant it is possible to select a menu through USB where the compliance data is transmitted continuos to the host The data format is 1000 1 ml and is
22. pressing the Extended Range key This is what strings instrument can send when it sends the OLANO8 Interrupter Changed header Auto Off Error Auto Off is a state where the DSP itself switches off the interrupter after x mS Used in a reflex measurement where tone is on for 500 mS This is what strings instrument can send when it sends the 9 Output Changed header Right Left Contra Probe Tone Probe Ipsi Probe Pressure No Output Bone Right Bone Left FF1 Right FF1 Left FF2 Right FF2 Left Insert Right Insert Left Error This is what strings the instrument can send when it sends the OLAN10 Transducer Changed header TDH39 EAR 22 Handheld Probe Clinical Probe B71 Free Field AA222 Appendix A page 18 Tymp Measurement Header Description Format Start Pressure US Stop Pressure US Ear Volume US Ear US probe tone frequency US pump speed US data US EOT Compliance of max US Pressure of max US Gradient US NumberOfPoints US EOT Tymp Data Compliance US Pressure US EOT The data pairs are transferred to the PC between the Test Start and Test Done or Test Aborted OLTAOO Test Aborted NumberOfPoints US EOT Reflex Measurement Header Description OLREO2 Reflex Test Start Ear US Pressure at which reflex is tested US probe tone frequency US Reflex Method US Output
23. than 500 100 daPa or if the pressure is larger than 700 100 daPa Adjustment of the pump spring Disconnect the probe tube from the air connection on the rear plate Connect a manometer and a syringe between the air connection and the probe tube Go to Calibration gt Probe gt Press gt Real menu Place the probe into a cavity airtight connection Press the gt button until 400 is reached and inspect the manometer Adjust the spring until the pressure decrease very slow down Pump again until 400 daPa is reached Inspect the manometer and if the pressure is stable or decrease very slow the adjustment is fine else turn the screw clockwise until the manometer is stable Repeat the pump procedure again and inspect the manometer for stable pressure Repeat this until the pressure is stable Now the spring is correct adjusted Before the contra nut is fastened the screw has to be turned three times clockwise to be sure that the system is and will stay airtight AA222 Service manual page 14 Hardware Calibration To enter the calibration menus please switch off power hold down shift while pressing Print key turn on power again Hold the keys down until you can enter a password The factory setting of the password is 1 2 3 4 but dealer may have changed it in order to protect the calibration If an EEPROM Error occurs during the power up press shift print to continue to the password screen N
24. the probe tone is disabled Advanced Reflex User Setup Calibration Advanced Reflex 15 1 Reflexez Positive Compliance Chanae ml cale limit 0 15 ml 250 Hz On urrFer limit 110 dB anual intensity 80 dB GC for 1 51 reflex stim On 1 F2 F3 F4 F5 F6 Back Advanced User Setup Figure 40 Display Reflexes Factory Positive Range Positive or Negative Description Selects how to display the reflexes in the diagrams 100 dB HL 100 dE HL 100 dB 100 dB I 100 dB I 100 dB I 100 dB I 100 dB I 100 dB I 100 dB 2000 Hz 1000 Hz 2 2000 5 4000 Hz 4 2000 1000 Hz 2 2000 3 4000 Hz Positive Negative Positive and Negative reflex display Figure 41 Compliance Change Factory ml Range ml or Description This setup item is used in connection with the Reflex Sensitivity setup item from the Reflex Test A B menu Choose between ml 0 05 0 10 or 0 15 ml and 2 4 or 6 of ear volume AA222 Appendix C page 3 Max Reflex scale limit Factory 0 15 ml Range 0 10 ml 0 15 ml 0 20 ml or 0 25 ml Description Is used to select the scale of the ml axis of the reflex diagram 100 dB HL 100 dE HL 0 10 ml scale 0 15 ml scale 100 dB HL 100 dB HL 0 20 ml scale 0 25 ml scale Same Reflex in different scales Figure 42 Stimuli Selection Factory All frequencies are selected as factory setting Range 250 Hz 750 Hz 1500 Hz 3000 Hz 4000 H
25. 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 Control Codes Table 1 A data packet from a Master will look like this with all its control codes STX Recipient US Sender US Direction SOH Header US Data US EOT Or with CRC check STX Recipi Sen Directi Head Data CRC Value EOT ent der on er 9 digits AA222 Appendix A page 3 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 A data packet from a Slave will look like this with all its 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 When the master uses CRC check the slave respond with OK or ERR Each time data is transmitted US control code is added 10 US 125 US With this construction it is always possible to see when all bytes in a single data transmission is completed CRC Check The Instrument supports CRC Check on the bytes received from the PC If the data packet contains a CRC value the Instrument calculates the CRC value of the bytes received and responds with OK or ERR If the Instrument responds with ERR
26. transmitted ASCII with an US and an EOT at the end for each data the sample rate is 226 Hz Description Format SPKYOO Set the Cl menu in the instrument 12060 US EOT Start the Cl measurement 7 CIDIOO Stop the CI measurement Pump to Pressure Pressure US EOT min 600 daPa and max 300 daPa Communication in Windows In this section sample code shows how the communication could be made it is using the ActiveX Control MSComm32 the code is compiled in Visual 6 0 This function opens the specified com port at 57600 baud No parity 8 bits and 1 stop bit The receive threshold is set to 1 byte BOOL OpenPort int PortNo CString Sertbrngetr 5760054N 9 1 5 m CommControl SetCommPort PortNo m CommControl Set5ettirngs Setrbingsttr m CommControl SetHandshaking 2 m CommControl SetPortOpen m CommControl SetRThreshold 1 return m CommControl GetPortOpen This function sends string out on the com port void SendString Cstring StringToSend i VARIANT OutString VI BOER Outstrzng bstreval Stringlooend AllocSvsStrfrringi cCommconurol sevOubputi Qut5troingjs This function calculates the CRC value and inserts into the string Cstrzng CLesLAA222Dig CalculateCRC CString StrangloCalculate int CROValue D Counter CRESECING for Counter 0 Counter lt StringToCalcula
27. 1 US Result US 1 Right Ear Old format US Compl11 US Compl12 US US GS 5 timulus2 US dBHL2 US Pressure2 US Result2 US Timebase2 US Compl21 US 1 Decay Contra Reflex Frequency US Pressure US Method US NumberOfPoints US GS Right Ear dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US lt CurveData gt GS until dB6 if the method is sequence and 6 reflexes recorded ETF1 Left Ear Header Description GILEOO ETF1 Left Ear Volume US Pressure1 US Press11 US Compl11 US Press12 US Old format Compl12 US US GS Pressure2 US Press21 US Compl21 US Press22 US Compl22 US GILEO1 ETF1 Left Ear EarVolume US NumberOfPoints US StartPressure US EndPressure US PumpSpeed US GS Pressure1 US Curve1 US GS Pressure2 US Curve2 US GS Pressure3 US Curve3 Curve Pressure 0 US ml 0 US Pressure NumberOfPoints US ml NumberOfPoints US EOT Right Ear Header Description GIREOO ETF1 Right Ear Volume US Pressure1 US Press11 US Compl11 US Press12 US Old format Compl12 US US GS Pressure2 US Press21 US Compl21 US Press22 US Compl22 US GIREO1 ETF1 Right Ear EarVolume US NumberOfPoints US StartPressure US EndPressure US PumpSpeed US GS Pressure1 US Curve1 US GS Pressure2 US lt Curve2 gt US GS Pressure3 US lt Curve3 gt Curve Pressure 0 US ml 0 US Pressure NumberOfPoints US ml NumberOfPoints US EOT AA222 Appendix A page 9 Get Data Description
28. 10 Fixed Reflex Figure 24 AA222 Appendix B page B6 Screening 10 dB Steps Setur Setur menu for Reflex Test A method Screening ClOdB Steps Reflex sensitivity Hormal Reflex Method Screening 10 dB Steps Figure 25 Method description The Screening method is an auto test for detecting reflexes Starting at level from the reflex table the automation will do a reflex measurement and verify the reflex against the reflex sensitivity box see Reflex Sensitivity If the reflex is bigger than the sensitivity box the test is done If not the intensity level will increase with 10 dB and do another reflex This will continue until the reflex is bigger than the sensitivity box or until maximum intensity level has been reached Reflex Sensitivity Factory Normal Range Sensitive Normal or Robust Description See Reflex Sensitivity Auto 5 dB Steps Setur setur menu for Reflex Test A Reflex methad Auto tade Sterz Reflex sensitivitas 1 Pout tsi Isi Sti 500 1000 2000 4000 3000 4000 so 9 an om on on eft Reflex Method Auto 5 Figure 26 AA222 Appendix B page B7 Method description The auto test method is a bit different from the screening method It presents a stimulus for a time of approximately 80 mS where after it verifies the comp
29. 22 Service manual page 19 Probe Real Mode Probe Real Mode Status Ctrl Pressure 8 00 ml Frequencs 300 daPa Malye F2 F3 F5 F6 F1 Back Probe Heal Mode Figure 9 This menu is designed for testing the calibration of the Probe system and the pressure safety valves Manually pump control Use F1 or F2 to change Pump Control status window to the right until it shows the descried pump pressure Notice the Pressure status window below Safety valve test The safety valve in the pressure system is designed with 800 daPa as minimum and 600 daPa as maximum limits for pump pressure normal pressure range is 600 to 300 daPa Note The safety valve may release before limits Connect a manometer to the pressure system that can measure pressures from 800 daPa to 600 daPa Press Valve F3 until the manometer stops its movement Notice the pressure and if the pressure lies within 800 and 650 daPa the valve works properly Press Valve F4 until the manometer stops its movement Notice the pressure and if the pressure lies within 350 and 600 daPa the valve works properly Ipsi Calibration Calibration ths 80 dB 500 Hz 13 0 dB LP HP Fi F2 F3 F4 FS F6 Back 000000 lpsi Calibration Menu Figure 10 This is the ipsi calibration menu AA222 Service manual page 20 In the audiogram in the s
30. 22 Service manual page 25 80001201 HBX235u Headset clinical j optional 80310001 HBZ23501 Headband 80030901 HB black with 1yoke Headband 80045701 DD45PA audiometric headset Peltor 80000201 with Peltor Headset optional 80000301 TDH39AA with Amplivox Headset 80000401 Eartone 5A 10 Ohm OEM optional 80003201 Eartone 3A 100hm optional 80002802 MTH400m Monitor Headset complete PC 130 optional 80003101 Headset 400 Monitor optional 80405201 400 Electret Microphone optional AA222 Service manual page 26 80405301 5400 Electret Microphone optional 80420501 UCO25 Optical USB isolation Optional AA222 Service manual page 27 Consumables BET55 Ear tip box Complete ear tip assortment and cleaning tool Q j 70 e 81415402 80429101 Probe cleaning tool Assembled open 341344xx Ear tip 15 mm umbrella 341345xx Ear tip 19 mm umbrella 341346xx Ear tip 22 mm umbrella 341347xx Ear tip mm mushroom 341348xx Ear tip 8 mm mushroom 341349xx Ear tip 9 mm mushroom 341350xx Ear tip 10 mm mushroom 341351xx Ear tip 11 mm mushroom 341352xx Ear tip 12 mm mushroom 341353xx Ear tip 13 mm mushroom 341354xx Ear tip 14 mm mushroom AA222 Service manual page 28 8 341355xx Ear tip 15 mm mushroom 341356xx Ear tip 19 mm mushroom 20 81426001 Cleaning cloth AA222 Service manual page 29 Spare parts 34602601 Cabinet transducer 050 C
31. 5 Hz sine 5 modulation Binaural pure tone or speech stimulation Automatic loudness balance test Fowler 6 ipsi and 6 contra graphs curves Each can have up to 6 pulses There is additional capacity for 6 manual tests When activated the displayed values for AC L R BC L R or FF1 and 2 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 Output of Channel 2 can be set up to be either Narrow Band or White Noise A signal level of 0 dB on the VU meter indicates that the output to the selected transducer is calibrated Thermal printer with recording paper in rolls 112mm 26s for worst case 2 tympanograms 16 reflexes 2 tone 2 Speech audiograms AA222 Service manual page 4 Table 1 Reflex Frequencies and intensity ranges Frequency 1 ___ S 20 40 15 wo 50 12 40 10 1 EN EBENEN OMNE WBnose 0 120 100 10 LP noise o 120 720 100 10 HP noise 0 120 2 0 120 10 _ Note Max values are obtainable by selecting Ext Range the instrument Table 2 Audiometry Frequencies and intensity ranges Audiometry Insert cM Free Field 7 Min px Lp 2 NE E NE NE EE E
32. A222 Appendix B page B17 Appendix C Advanced User Setup Advanced User Setup This appendix describes the advanced setup functions of the AA222 Calibration Menu Setur Headset EEPROM Att Fixed F4 F5 F6 Back F2 F3 000000 The Calibration Menu Figure 38 In the Calibration menu there are two issues of interest for setting up the AA222 The first is the Advanced User Setup and the second is the setup storage facilities in the EEPROM menu Note that it requires a password to access the Calibration and that entering the calibration menu is done during power up by holding down shift and print until you can enter the password The Advanced User Setup The first setup that appears when pressing Setup F1 in the calibration menu is a setup for common stuff Advanced Menu Risht 1234 Contra Headzet TOHS9 ImrFedance Transducer Combi Enable ETF1 Test Inztrument Hame Brand 5 F F2 F3 Back 000000 Advanced User Setup Figure 39 Start Ear Factory Right Range Right or Left Description Here you may choose which ear to select automatically for the first test AA222 Appendix C page 1 Password Factory 1234 Range Each digit can be change within a range of 0 to 9 Description Makes it possible to change the password for entering the calibration Note You need an AT Keyboard to change this item and Keyboard On must be selected in the Comm
33. Audiometry Setup Figure 43 Audiometry Headset Factory TDH39 Range TDH39 or EAR Description Selects what headset to be used in audiometry menus Note that by choosing another transducer you may need to calibrate the transducer The AA222 can hold calibration values for both transducers Bone Symbols Factory R lt L gt Range lt gt gt lt Description Selects how to display and print bone symbols Speech Mode Factory Standard Range Standard or USA Description Selects how to display speech information AA222 Appendix C page 5 Letter Printout Error Internal printer Some of the internal printer modules thermo printer can loose their font data and therefore do printouts with errors in the letters If this error should occur please use this option to restore fonts in the internal printer module Note If not the internal printer option is selected in the Common menu this menu item will be invisible Press Print FG in the Advanced User Setup and follow the instructions on the screen Note Before restoring the fonts a jumper must be placed on the printer interface board connector J3 see Printer Connections for details Storing Restoring the Setup Calibration EEPROM Setur Menu WARN Use of the menu items of this menu can change the calibration FS and and the normal uze of the instrument Fl Stores all zeturs in Original User Setur F2 Restores all seturs Original User Set
34. Format SGGAO00 Get All Data Old format Returns with all data stored Look for headers the return string and see in this manual for format description The Tymp and the reflexes are transferred in the old format Header Description Format SGGAO01 Get All Data New format Returns with all data stored Look for headers in the return string and see in this manual for format description The Tymp and the reflexes are transferred in the new format EEPROM Commands Set or get EEPROM data Header Description Format GDE100 EEPROM Data Data1 US Data2 US Data8192 US EOT GDE101 EEPROM Data from Master SI Address US NumberOfBytes US EOT Address number of Slave Data Address US Data NumberOfBytes US EOT bytes Master SO Address US NumberOfBytes US Data 0 US Data NumberOfBytes US EOT Calculate Checksum When the values in the EEPROM are changes with the two commands above the Instrument has to calculate a new checksum of the values in the EEPROM Description Format 00 Calculate Checksum 222 Information Description Format GDIDOO Identification of USB version data US GDIDO1 Brand Name and version data US 01003 Serial number and date xxxxxxx US ddmmyyyy US EOT GDIDOA4 Instrument name and version data US Remote Commands It is possible to remote control the Instrument via the USB link Header Description Format SPKYOO oet a key or menu in the instrument Keynumbe
35. HL2 US Pressure2 US Result2 US Timebase2 US Compl21 US GAILO1 Decay IPSI Reflex Left Frequency US Pressure US Method US NumberOfPoints US GS Ear dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US CurveData GS until dB6 if the method is sequence and 6 reflexes recorded Right Ear Header Description GAIROO Decay IPSI Reflex Right Stimulus US dBHL1 US Pressure1 US Result1 US Timebase1 Ear Old format US Compl11 US Compl12 05 05 GS 5 timulus2 US dBHL2 US Pressure2 US Result2 US Timebase2 US Compl21 US GAIRO1 Decay IPSI Reflex Right Frequency US Pressure US Method US NumberOfPoints US GS Ear dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US lt CurveData gt GS until dB6 if the method is sequence and 6 reflexes recorded AA222 Appendix A page 8 Decay Contra Reflex Left Ear Header Description GACLOO Decay Contra Reflex Left Stimulus US dBHL1 US Pressure1 US Result1 US 1 Ear Old format US Compl11 US Compl12 05 05 GS 5 timulus2 US dBHL2 US Pressure2 US Result2 US Timebase2 US Compl21 US GACLO1 Decay Contra Reflex Left Frequency US Pressure US Method US NumberOfPoints US GS Ear dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US lt CurveData gt GS until if the method is sequence and 6 reflexes recorded Right Ear Description GACROO Decay Contra Reflex Stimulus1 US dBHL1 US Pressure
36. N dB HL 100 100 100 Q x Le Speech Noise Note Max values are obtainable by selecting Ext Range on the instrument Other configuration of the intensity range can be choosed by use of the Service Software AA222 Service manual page 5 Specification of input output connections Inputs Electricalproperties Power UPS400 DIN 5 pole Pin 1 and 2 Pin 3 Pin 4 Pin 5 Patient response Jack 6 3mm stereo Handheld switch 5V through is forced to level when activated CD 1 and 2 Phono Sensitivity 9 mV at max volume and 0 Vu Impedance 47 5 Freq Response 75 12000 Hz 3dB Microphone Jack 6 3 mm stereo Type Electret or 20000 dynamic microphone Sensitivity 100 uV at max volume for 0 Vu reading Impedance 47 5 Freq Response 90 20kHz Electret bias 6 2V through 4 75 1 3 mA Talk Back microphone Jack 6 3 mm stereo As for Microphone Keyboard DIN 5 pole Pin 1 NC Pin 2 Grey RXA1 Pin 3 Violet Sync clk Pin 4 White VDD 5V Pin 5 Black Gnd Outputs Phones Left Right Jack 6 3mm mono Voltage Up to 5 5V rms by 100 load Min load impedance Bone conductor Jack 6 3mm mono for Phones Left Right Free Field 1 2 Phono Voltage Up to 8 0V rms 1000 load Min load impedance 1000 Monitor Jack 6 3mm mono Voltage Up to 2 0V rms by 80
37. S 32622 D 924 1058 QD8402 100 8 8 x x 1 1 85 1 C015 7 H 8 1115114 6367 C222 R195 8522 1 355 R1720 0 e IN o 1052 7 59010806 1 51 178 10182 6152 1 50 14 7456 C0168 8139 5 0 CI R132 8158 R149 ZJ C210 19 R135 ADSP 21B4 121 xod E i E e Cored E OPEM Los 2 8 1955 2008 cru LE 5 M Cka ur 2 to Ww S sara R 20 sq 8 00 z r U zou n co at 492 ms 80 cea S 294 K M A341 23 inanis E bJ B ir iss 1 m 05 m STII VEM REM o II 5821 0 18201 zi 088553 Ze oe 8 m 5 Sa C sea 2 M D 21 95 08 4 I p 25 1 S 05 1252 2 7 8 N Bra u or lt 1 10 Ne 5 lel 0 BIOS 3H zm
38. Service Manual Audio Traveller AA222 Part number 80653110 Valid from serial 899714 Contents CONE IE M LIE DEM d T INE II 1 General 3 Impedance Measuring System Darl eden bud gunt tesis 3 Ferlex and Audiometer FUNCTIONS aid ced boda deut uai euius iud ULLA 3 Table 1 Reflex Frequencies and intensity ranges 5 Table 2 Audiometry Frequencies and intensity 5 Specification of input output 6 Calibration properties coa Meo 7 Reference values for stimulus and audiometer calibration 9 Output voltages regulated 11 General about Specificalloris eee cid ie dite iue ee iive 11 51165 5 2 2 0 5 TOL R 12 nd gelei ie lU ENIRO 13 General Information blouson dtc beet 13 Service Adjustment and 54444544 818448 a 13 Equipment Tor Ihe CallbratiOn E ua qu UM MODI RE NIE EMI UEM MM IUE 13 ASY SO M A 14 Hardware Cd
39. able transducer 57007501 34642202 Probetip 1057 34123001 Gasket 1057 34642401 80310601 Probe module with wires 050 277 2 4 f 36303201 Button for transducer 36803203 Spring plate probe 050 34705101 Clamp probe instrument 050 36300101 Button rotary 236x 26 Dark grey 36300201 Cap curved 32 5 28 3 5 Dark grey AA222 Service manual page 30 Digitast bottom part 36302001 36302901 Knob lower part 050 36304801 Button upper part 040 36305101 Button lower part 050 31601101 M7x10 knurled nut 3 305801 56000201 Pump 050 56001401 Air conductance Cable connection 050 56002301 Pump tube complete 76102501 Thermal printer 34704901 Cabinet printer 050 55000801 Goose neck 053 AA222 Service manual page 31 50000106 Power supply 5400 3 300302 Cable UPS400 01007615 PCA Main board 053 AA222 Service manual page 32 Disassembly Open Cabinet Remove 2 Torx screws A use Torx tool T20 Remove 3 EMC screws B use PZD1 tool The main part of the two piece bottom plate can now be removed for calibration For exchange of the pump tube remove 2 Torx screws C Torx tool T20 Pump Tube Connections 1 amp 4 Wire connections from pump to Mainboard CO19 2 Tube from air reservoir to pump Part number 38004101 length 85mm 3 Tube from air reservoir to Rear Panel Air Pipe Part number 38000301
40. an be followed on the display and operation panel Online communication can be selected where the measured data will be sent to an external PC See separate section in Service Manual for programming details Connection for external keyboard standard PC type Connection for external printer using HP PCL L3 Operator to patient communication 10 110dB continuously adjustable on the operation panel 0 to 130 dB in 1 or 5 dB steps Typical range is 10 to 120 dB HL Range is individual for different modes see table 1 The upper 20dB is accessed by pressing the ext Range button Silent touch switch for soft presentation of signals Tone indication in the display 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 Manual control of all functions Auto threshold according to ISO 8253 1 Patient controlled Hughson Westlake The threshold is determined by the activation of the patient response Manual control of all functions Manually controlled with stimulus duration of 10 s With automatic score calculation 5dB included for familiarisation
41. at least 300 to 600 daPa and a accuracy of 5 of reading 5 daPa which ever is the greatest Including a syringe manual pump 40 calibration cavities 0 5 2 0 and 5 0 ml It is recommended to have an acoustic calibrator for the control of the complete measuring chain General purpose frequency counter General purpose digital multimeter General purpose oscilloscope in order to trace and monitor signals AA222 Service manual page 13 Air System The safety valves and the pump system are adjusted in correct way from factory Normally it should not be adjusted but if the pump tube has to be exchanged it is necessary to readjust the spring on the pump Please always use pre cutted pump tubes ordered from Interacoustics Control of the pump system Go to Calibration gt Probe gt Press gt Real menu Place the probe into a cavity airtight connection Press 2 button F2 until you reached 300 daPa in the Pump Ctrl field on the display If the build up pressure keep at 300 daPa the system is airtight If the instrument is out of calibration you can connect an ex ternal manometer andas yringe between the air connection on the rear plate and the probe tube Press the syringe until 300 daPa is reached and inspect the manometer If the pressure is stable the system is airtight Safety valve The safety valve must release the pressure then the pressure is out of limit means if the pressure is larger
42. cr 1027 IntensityIncr 1028 Range 1128 Intensity Decr Ch2 1034 Intensity Incr Ch2 1035 Ch2Off ____ 1039 444 4 CD1 CD2 1041 Shift CD1 CD2 1141 2 1047 1042 CD2 1043 FF1 108 Monitor TB 1044 Monitor TB 1144 FF2 7109 Monitor 1045 78 06 6 Status Header Description Format SGRS02 Reduced instrument status Intensity Ch1 US Intensity Ch2 US Frequency US Input US Output US Transducer US Store Flag US Speech Percent US EOT SGMEOO Menu Status Active Menu US Submenu US EOT Input Output and Transducer The Input and Output parameter in the reduced status is a numerical value use the table below to obtain the Input and Output type Input type Code Output type Code Transducer Pure Tone 1 JjRightPhoe 2200 TDH39 1250 WarbleTone 2 LeftPhone 2201 EAR __ 1251 Narrow Band 3 2202 CIR22 CIR33 1252 Speech Talkforward 7 ProbeTone 7 2203 Handheld Probe 1253 Low Pass Noise 10 Probe Ipsi speaker 2204 Clinic Probe 1254 High Pass Noise 11 Noouput 7 2206 871 1255 Wide Band Noise 12 jRightBboe 20 12 228 222 11 Active Menu and Submenu The Menu Status returns the Active Menu and Submenu as a numerical value use the table below to obtain the name of the menus The Submenu is only used in Impedance Menu
43. creen picture you can see the calibration of the ipsi transducer and the calibration level by looking at lines The dotted lines are the calibration values drawn with offset in the calibration level normal line Above the audiogram we have an information window The information window The information window contains information that can be helpful working with the calibration The figure below shows what kind of information that is displayed Patient Response Qurrent Frequency 105 80 dB 500 Hz 13 0 21 Tone Switch Current Level Calibration Value Frequency Maximum Level Information Window Figure 1 1 How to calibrate 1 Select by means of frequency increase decrease the frequency to be calibrated or start to calibrate the pre selected frequency 2 Press intensity increase decrease for channel 1 until the desired sound pressure level has been achieved 3 Press store The instrument will automatically jump to the next frequency 4 Continue to calibrate the new frequency or select another To Test the Ipsi Calibration When done with the ipsi calibration you can enter the Ipsi Real Mode to test the calibration Select Real F6 to enter this menu AA222 Service manual page 21 Headset Calibration Headset Calibration 50 dB 125 Hz 0 0 dB TDH39 CIR 22 ERR 3H Rea F1 F2 F4 F5 F Back 000000 Headset calibration Figure 12 This is the headset calibration menu In the au
44. ctor Motor 5V GND 24V GND Parallel Port Centronics Keyboard and LED s Place a jumper on J3 to enable restore fonts AA222 Service manual page 38 FF CH1 MP8 LEFTPH CH1 4 TRANSDUCER MP2 MP1 BONE CH1 8 amp IC9 IC4 IC5 25 CH1 0 120dB 20dB 627 ATT gt 2 O 9 E OUTPUT ATT MIXER C SWITCH SENSOR CODEC ATT1 0 20dB ATT1 1 STEREO p ATT1 3 K PCM3001 IC16 amp IC17 5 IC15 14 IPSI 9 VREF 42 EL NAV 0 120dB 20dB ATT ES NAVIGATION LED R LED G LED B CH2 L R KEY LEDR CH2 L R OUTPUT a 5 LED G SWITCH LED B ATT2 0 20dB CH2 ATT2 1 2 2 RIGHTPH CH2 IC57 IC89 ATT2 3 IPSI CH2 IC90 CONTRA CH2 ATT PROBE 1233 IC46 FF CH2 LEFT SEL NAV CH2 vd TALK DUAL DAC MONITOR FORWARD IC31 AD7249 RIGHT CH2 MON AD2186 BONE T B IC31 L S IC41 FF CH1 FF CH2 ADC MIC IC80 194099 97 IC98 12103 IC104 6 DIN DATA SWITCH CLK IC28 CD1 L S FLASH EEPROM IC28 IC66 USB CD2 RS232 USB RAM 3 0 CPU ATT 3 1 MC68306 ATT 3 2 KEYBOARD 2 IC62 ATT 4 0 MES ATT 4 1 IC53 ATT 4 2 DISPLAY YGV610B 2 PAT RESPONSE GND LED R LED G LED B
45. diogram in the screen picture you can see the calibration of the transducer and the calibration level by looking at lines The dotted lines are the calibration values drawn with offset in the calibration level normal line Above the audiogram we have an information window The information window The information window contains information that can be helpful working with the calibration The figure below shows what kind of information that is displayed How to calibrate Patient Response Current Frequency 80 dB 500 Hz 13 0 dB Tone Switch Current Level Calibration Value Frequency Maximum Level Information Window Figure 13 1 Select by means of frequency increase decrease the frequency to be calibrated or start to calibrate the pre selected frequency 2 Press intensity increase decrease for channel 1 until the desired sound pressure level has been achieved 3 Press store The instrument will automatically jump to the next frequency 4 Continue to calibrate the new frequency or select another 5 Select a new output by pressing Right Left Bone FF1 or FF2 and repeat from step 1 6 Select a new output TDH39 CIR22 CIR33 or EAR3A by pressing F1 F2 or F3 and repeat from step 1 7 To change between Pure Tone and Narrow Band use the rotary key for channel 2 Increase selects Narrow Band decrease selects Pure Tone AA222 Service manual page 22 Speech Input Amplifier Adjustment Enter the Calibration
46. e length When multipulse is selected the tone presentation and intermitted pause is equal Level decr incr Factory 5 Range 1 or 5 dB Description Selects the intensity level decrease increase in manual audiometry AA222 Appendix B page B13 Test Audiometry Set up Menu Setur Test Audiometry Setur Menu Automatic Test Frequencies 125 Hz Off Conditions 2 out of 3 AELE Test Pulse Lenath F2 F3 F4 5 F6 Back F1 i 000000 Test Audiometry Set up Menu Figure 34 Automatic Test HW Frequencies Factory All frequencies are Off as factory setting Range 125 Hz 250 Hz 750 Hz 1500 Hz 3000 Hz 6000 Hz and 8000 Hz can be selected as On or Off Description Use the frequency keys to select the desired frequency and press Change F1 to select On or Off Conditions Factory 2 out of 3 Range 2 out of 3 or 3 out of 5 Description 15 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 ABLB Test Pulse Length Factory 500 mS Range 250 mS to 5000 mS in steps of 50 mS Description Selects the pulse length The tone presentation and intermitted pause is equal AA222 Appendix B page B14 Common Set up Setur Common Setur Menu Pause OOTT Baud Rate Remote Switch Manual Reflex Attenuator 5 dB Reflex Icon Boxes Frinter subject Data Printout Cl
47. ence method Note The test box is not shown in the AA222 software It only serves as examples of what sensitivity is and how we do it AA222 Appendix B page B10 Audiometry Set up Menu Setur Audiometra Setur Maskina Intensity 5 Turn Hot Heard Lines Dutrut Borne Masking DrrFosite Chl Bone at 8 kHz Microphone Selection Dutrut Channel 2 Hudiometer Mode Preselect Auto FZ F4 F5 F6 F1 Back eooooo Audiometry Set up Menu Figure 32 Default Intensity Factory 30 dB Range Unchanged 10 to 50 dB in 5 dB steps Description If Unchanged is selected the instrument will behave as follows In manual audiometry the intensity it will hold its level when shifting transducer and will initially go to 30 when selecting the manual audiometry In the HW test the intensity will always go to 40 dB no matter what the previous intensity was If a value is selected the instrument will behave as follows Entering one of the two menus or changing transducer the intensity will go to the selected level Masking Intensity Factory 0 dB Range Turn Unchanged 10 to 50 dB in 5 dB steps Description f Unchanged is selected the instrument will behave as follows In manual audiometry the intensity it will hold its level when shifting transducer and will initially go to 0 when selecting the manual audiometry If a value is selected the instrument will behave as follows Entering a menu or changing transducer
48. eral Earphone is integrated in the probe system 226 Hz transmitter and receiver and pressure transducer is integrated in the probe system Telephonics TDH39 with a static force of 4 5N 0 5N Radioear B71 with a static force of 5 4N 0 5N Tone Option CIR22 CIR33 Option Generally the instrument is made and calibrated to be within and better than the tolerances required in the specified standards 1 3 dB for 125 to 4000Hz and 5 dB for 6000 to 8000Hz 0 10 dB at 125 249 Hz 3 dB for 250 4000 Hz 5 dB for 4001 6300 Hz 5 dB for 500 to 2000Hz and 5 10 dB for 3000 to 4000Hz 5 10 daPa whichever is greater 5 or 0 1 ml whichever is greater 226 Hz 190 85 dB SPL 1 5 dB measured in an IEC 126 acoustic coupler The level is constant for all volumes in the measurement range Max 590 THD 0 1 to 6 0 ml 0 003 0 00020 ml daPa 0 001 ml is the lowest detectable volume change Initial latency 10 ms 5 ms Rise time 75 ms 5 ms Terminal latency 10ms 5 ms Fall time 75 ms 5 ms Overshoot max 8 Undershoot max 10 Values between 600 to 300 daPa can be selected in the set up 700 daPa and 500 daPa 100 daPa Reflex audiometer calibration standards and spectral properties Specifications for stimulus and audiometer signals are made to follow EN 60645 1 Pure tone Wide Band noise WB Spectral properties Low Pass noise LP Spec
49. ets a Setup Item in the Instrument Master SO US Item No US Value US EOT Slave Sends nothing back Master S US Item No US EOT Slave Value US EOT Setup Name Setup Number Value Range Tympanometry Setup Start Pressure 191 25 25 daPa 36 300 daPa Stop Pressure 192 0 600 daPa 23 25 daPa Pump Speed 193 10 Low 11 Medium 12 High 13 Automatic Compensation Mode 10 Comp 11 Non Comp Gradient Unit 10 ml 11 daPa 12 Off Reflex Setup A Reflex Method 91 10 Fixed 11 Screening 12 Auto 13 Sequence Test Stop Criteria 0 Off 1 On Reflex Senitivity 93 10 Sensitive 11 Normal 12 Robust Reflexes pr Sequence 10 2 reflexes 14 6 reflexes Level increase 95 10 5 dB 15 10 dB Compensate for general drifting 9605 1 Normal Reflex1Ouput 100 10 IPSI 11 Contra Reflex 2 6 has the same value range the number is Reflex 1 Number 4 for Reflex 2 S Common Setup Power up 215110 Tymp 11 Tymp and Reflex Remote Switch 212 10 L R 11 Pause fw 13 08 0 Reflex Icon Boxes To get Reflex Setup B add 50 to Number AA222 Appendix A page 13 Setup Audiometry Setup Setup Number Value Range Default Intensity 0 Off 10 10 dB 70 50 dB 10 10 dB 70 50 dB Speech Setup Standard Curve FF1 FF2 Standard Curve p Manual Audiometry Intensity
50. f 5 10 15 20 25 30 35 40 dB Description 15 used to select how much the Intensity is decreased when the frequency is changed Audiometry Frequencies Factory All frequencies are selected as factory setting Range 125 Hz 250 Hz 750 Hz 1500 Hz 3000 Hz 6000 Hz and 8000 Hz can be selected as On or Off Description Use the frequency keys to select the desired frequency and press Change F1 to select On or Off Frequency Jump Mode Factory Bottom Range Bottom or Butterfly Description 15 used to select how the frequency jumps when activating the frequency keys Bottom Trying to increase the frequency selection beyond 8000 Hz will cause the frequency to jump to 125 Hz ready to perform increasing frequency selection Butterfly Trying to increase the frequency selection beyond 8000 Hz will cause the frequency to jump to 1000 Hz ready to perform decreasing frequency selection Trying to decrease the frequency below the lowest frequency will cause the frequency to go to 1000 Hz ready to perform increasing frequency selection Pulse Key Function Factory Multipulse Range Multipulse or Singlepulse Description Selects the function of the pulse key Multipulse The tone is presented with continuos pulsing when the tone switch is activated Singlepulse The tone is presented once when the tone switch is activated Pulse Length Factory 500 mS Range 250 mS to 5000 mS in steps of 50 mS Description Selects the puls
51. frequency US GTRPO5 Masking Level Frequency US dB US frequency US Left Bone Header Description Format GTLPOO Hearing Level Frequency US dB US frequency US GTLBO5 UCL Level Frequency US dB US frequency US Right Bone Header Description Format GTRBOO Hearing Level Frequency US dB US frequency US 5 Masking Level Frequency US dB US frequency US SISI Data Left Phone Description Format SILPOO SISI Data Frequency US Intensity US Modulation US Presentation US Answer US Frequency Right Phone Header Description Format SIRPOO SISI Data Frequency US Intensity US Modulation US Presentation US Answer US Frequency AA222 Appendix A page 5 Speech Audiogram Standard Speech Description Format dB US US dB US GS M N US RS dB US US dB US US dB US GS M N US RS dB US US dB US US dB US US dB US US dB US GS M N US RS dB US US dB US US dB US GS M N US RS dB US US dB US dB US 96 US dB US US dB US US dB US GS M N US RS dB US US dB US US dB US GS M N US RS dB US US USA Speech Description Format Note If value equals 32700 then No Data AA222 Appendix A page 6 Impedance Audiometry Tympanogram Left Ear Header Description GCLEOO Tympanogram Left Ear Compliance US Volume US Pressure US Gradient US Press1 US Old format Compl1 US Press2 US compl2 US GCLEO1 Tympanog
52. inic Data Printout Print Hfter Test Keyboard Connected F3 F4 FS F6 Back Fh 000000 Common Set up Figure 35 Power up Factory Tymp and Reflex Range or Tymp and Reflex Description Selects what menu the instrument will go to after power up Pause default Factory Off Range On or Off Description If On is selected the pause key is pre selected when test is finished and when entering the automatic impedance menu Communication Factory USB Range USB Remote Switch Factory L R Range Pause Off or L R Description Selects the function of the key on the impedance transducer Manual Reflex Attenuator Factory o dB Range 1 20r 5 dB Description How many dB s the intensity will increase decrease when pressing the dB keys in manual impedance mode AA222 Appendix B page B15 Reflex Icon Boxes Factory 6 boxes Range 4 or 6 Boxes Description Selects between 4 or 6 reflex icon boxes see Figure ed im All a5 105 _ 80 dB I 20 dB I 20 dB I ro dB I I I 500 Hz 1 1000 Hz 2 2000 Hz 3 4000 Hz 1 100 2 2000Hz 10 TIN 5 4 Reflex Icon Boxes 6 Reflex Icon Boxes 4 vs 6 Reflex Icon Boxes Figure 36 Printer Factory Internal Range Internal HP L3 IBM Mode or Description Select what type of printer that is attached to the instrument Note The HP PCL L3 mode shall be selected in when connecting a HP Laser pr
53. inter Subject data printout Factory On Range On or Off Description f On is selected the subject information will be printed together with subject data Note Only available when using internal printer Clinic data printout Factory On Range On or Off Description f On is selected the clinic information will be printed together with subject data Print After Test Factory Off Range On or Off Description When a test is done and data are recorded on both ears a print out will be done on the selected printer AA222 Appendix B page B16 Keyboard Connected Factory Range Yes or No Description f Yes is selected the subject menu will appear when pressing New Subject where it is possible to enter subject data and or delete current data and proceed with a new measurement If No is selected a dialog box saying All Data Deleted will appear shortly and the instrument is ready for a new measurement Clinic Set up Clinic LEUSE Interacoustics 75 Address PostCode City County Country Phone Fax Web E mail Wat 47200715 Hew Edit F3 F4 FOR FR OM F Back 9000060 Clinic Set up Figure 37 The Clinic Set up lets you insert your clinic data used for printouts Note that the set up item Clinic Data Printout in the Common Menu needs to be On before data comes out on paper To enter data you need an AT keyboard ordinary PC keyboard attached to the AA222 while entering data A
54. l Reflex Attenuator 5 dB Reflex Icon Boxes 6 Set up Printer Tterna subject Data Printout Clinic bata Printout Print After Test Keyboard Connec ted Menu line Change menu back Key Navigation Keys Menu Keywords Figure 15 Pressing the arrow down F2 or up F3 the menu bar moves and by pressing Change F1 you can change the settings for the item selected by the menu bar Leaving a Menu When the changes are made press the lt Back gt key No changes are stored before you leave the menu and if anything is changed the instrument will ask you to save data or not Please note that you have to press Yes F1 No F6 Setur Setur menu Tor Reflex Test H Reflex method Sequence Fafi ow c KR 2 4 Geet iret F4 000000 Save data at menu exit Figure 16 AA222 Appendix B page B1 User Set up This is the description of the navigation in the User Set up in AA222 and which options can be changed from the set up From the Main Set up Menu see figure 3 it is possible to access the Impedance Audiometry Common and Clinic set up menus Setur Menu Main Set up Figure 17 Tympanometry Set up Setur Tanpanametry Setur Menu Stor Pressure 400 daPa Pumr Sreed 5 Automatic Mode Compensated Gradient Unit ml Tympanometry Set up Figure 18 Start Pressure Fac
55. liance against the start compliance If the difference is bigger than the size of the reflex sensitivity test box see Reflex Sensitivity it performs a reflex measurement The reflex is then tested against the reflex sensitivity test box If the reflex is outside the test box the reflex measurement is done If not the instrument performs the same test once again If the search fails after second attempt the instrument will continue the search with the screening method in 5 dB steps instead of the currently auto search If the reflex intensity level reaches maximum intensity level for the transducer the search is done accepting the reflex found Reflex sensitivity Factory Normal Range sensitive Normal or Robust Description See Reflex Sensitivity Sequence Setur Setur menu for Reflex Test H F Sequence 2 10 For general drifting Hormal Gut Tesi Irsi Irsi Irsi Irsi sti soo 1000 2000 4000 sooo _ 855 85 85 85 85 55 F1 F F5 F6 Back Reflex Method Sequence Figure 27 Method description The sequence method gives the possibility of having up to 6 single reflexes in one Figure The level from the table is used as start level and the jump between each reflex can be set in Level increase The screening method has stop criteria so it stops the measurement if the reflex is equal to or bigger than the reflex sensitivity test box The function can be
56. load Min load impedance 00 Phones Contralateral Jack 6 3mm mono Voltage Up to 5 5V rms by 100 load Insert masking Min load impedance 50 Transducer CANON 15 pole Press 1 signal 12V 12V Remote key detection Probe tone Mic signal LED blue Press 2 signal LED green Ipsi Stim Gnd Ipsi Stim Signal Probe tone Gnd Gnd Vref 5V LED red Data 11111111 USB USB USB port for See appendix in service manual for detailed communication information Other electrical specification VU meter True r m s measurement Warble 5 Hz sine 5 modulation AA222 Service manual page 6 Calibration properties Calibrated Transducers Accuracy Probe tone Compliance Pressure General Contralateral Earphone Ipsilateral Earphone Earphones Contralateral Earphone Probe system Audiometry headset Bone conductor Insert phones Insert masking phone General Audiometer and Reflex Frequencies Contralateral Reflex and Audiometer Tone Levels Speech frequency response Ipsilateral Reflex Tone Levels Pressure measurement Compliance measurement Impedance calibration properties Frequency Level Distortion Range Temperature dependence Pressure dependence Reflex sensitivity Temporal reflex characteristics Range Safety limits Telephonics TDH39 with a static force of 4 5N 0 5N Ipsilat
57. menu Choose Headset and any transducer TDH39 CIR22 CIR33 EAR3A Choose using the Frequency controls Connect a sine wave generator pre selected to 1000 Hz 100mV open circuit to the CD1 input socket on the rear panel Press the CD key This causes a VU meter to appear Adjust the Channel 1 HL dB control for OdB on the VU meter Connect the sine wave generator to the CD2 input socket press the CD2 key and adjust the Channel 1 HL dB control for OdB on the VU meter Press the Back key The instrument is now ready for speech calibration To test the headset Calibration When done with the headset calibration you can enter the Headset Real Mode to test the calibration Select Real F6 to enter this menu To change between Pure Tone and Narrow Band use the rotary key for channel 2 Increase selects Narrow Band decrease selects Pure Tone Factory Calibration Values EEPROM Menu WAR Use of the menu items of this menu can change the calibration F5 and F and the normal use of the instrument Fl Stores all zeturs in Original User Setur FZ Restores all setups to Original User Setur Restores all seturs to Factors Settings Store F1 F2 14 F5 F6 Back EEPROM Service Menu Figure 14 If needed it is possible to insert factory data for either the calibration or for the whole setting of the instrument Insert Factory Calibration Values The Calib F5 func
58. ne Ipsi Earphone Bone Conductor Air USB 60601 1 Class 1 B EN 60601 1 2 EN 61027 ANSI 53 39 Type 2 EN 60645 1 ANSI 53 6 Tone Type 2 Speech Type 15 W Max 60W see separate Service Manual T1A 15 35 30 9090 Temperatures below 0 C and above 50 C may cause permanent damage on the instrument and its accessories 10 minutes at room temperature 20 C 226 Hz 85 dB SPL with AGC assuring constant level at different volume Automatic Measured value is displayed on the graphical display 600 to 300 daPa 800 daPa and 600 daPa Minimum 50 daPa s medium maximum or automatic with minimum speed at compliance peak Selectable in the set up 0 1 to 6 0 ml Ear volume 0 1 to 8 0 ml Automatic where the start and stop pressure can be user programmed in the set up function Williams test automatic function Compliance is indicated as ml and pressure as daPa Stimulus level is indicated as dB Hearing Level 1 curve per ear 3 curves per ear 250 500 1000 2000 3000 4000 6000 8000 Hz 125 250 500 750 1000 1500 2000 3000 4000 6000 8000 HZ 500 1000 2000 3000 4000 Hz Wide Band High Pass Low Pass Wide Band High Pass Low Pass Narrow Band Noise in 11 bands White Noise Speech Noise Connection for CD or tape player Connection for external microphone for live speech Connection for talk back microphone Level adjustment by entering
59. ny kind of the calibration can take place the AA222 must have been on power for at least 3 5 minutes in a normal temperature milieu and the instrument must be in the same milieu for a reasonable time While keeping shift and Print buttons down switch power on at the rear panel of the instrument By use of the F keys enter password 1 2 34 The AA222 is now in software calibration menu If a printer is connected to the instrument is it possible to get a complete detailed description of the instrument set up While keeping shift and Store buttons down switch power on at the rear panel of the instrument The AA222 has to kinds of calibration hardware and s oftware calibration The software calibration can be done without opening the instrument When the instrument has been hardware calibrated it must be followed by a software calibration Equipment for the Calibration In order to assure correct calibration of the audiometric equipment it is important that the necessary measuring equipment is used 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 Acoustics coupler 6cc and 2cc fulfilling the demand of IEC 303 and IEC 126 1 pressure field condenser microphone for the above mentioned couplers fulfilling the demands of the IEC 1094 1 Manometer with a range from
60. o find out which COM port to use when communicating with the instrument start the Device Manager Click Start My Computer properties Hardware gt Device Manager The Port is recognized as USB Serial Port use the one with the lowest number Device Manager File Action Help m Computer See Disk drives Display adapters DVD CD ROM drives 4 Floppy disk controllers Floppy disk drives controllers E Keyboards 7 Mice and other pointing devices B Network adapters Ports amp LPT J Communications Port 1 J Communications Port COM2 Printer Port LPT1 27 USB Serial Port COM4 27 USB Serial Port COMS 9f Processors 9 Sound video and game controllers System devices 4 Universal Serial Bus controllers If the COM port number is higher than it is possible to set in the PC application it is possible to change the number by selecting properties for the USB Serial Port then Click Hardware and Advanced the following window should appear Advanced Settings for COM4 COM Port Number OK USB Transfer Sizes E Cancel Select lower settings to correct performance problems at low baud rates Select higher settings for faster performance Defaults Receive Bytes 4096 m Transmit Bytes 4096 27 BM Options Miscellaneous Options Select lower settings to correct resp
61. on menu Contra Headset Factory TDH39 Range CIR22 CIR33 TDH39 or EAR 3A Description Here you may choose which contra headset to use Impedance Transducer Factory Handheld Range Handheld or Clinic Description Gives you the possibility to change between the Clinical and the Handheld impedance transducer Note that the transducer might need to be calibrated before use and that the AA222 can hold calibration sets for both transducers at the same time Enalbel ETF1 Test Factory Enable Range Enable or Disable Description f you select disable it is not possible to start the ETF test Height above sea level Factory 0 99m Range 0 2599 m in 100 m steps Description To give a more precise measuring system especially at high probe tone tympanometry Instrument Name Factory AA222 Description Makes it possible to change the instrument name Note You need an AT Keyboard to change this item and Keyboard On must be selected in the Common menu Dealer Name Factory Interacoustics A S Description Makes it possible to change the Dealer name The Dealer name appears on the top of thermo printout Note You need an AT Keyboard to change this item and Keyboard On must be selected in the Common menu AA222 Appendix C page 2 Seal sensitivity Sensitive This gives reproducible results Require quiet probe handling Normal Quicker seal detection and less sensitive than the above selection Robust Very quick seal detection AGC on
62. onse problems Serial Enumerator Serial Printer Latency Timer msec 16 Cancel If Power Off Set RTS On Close Minimum Read Timeout msec 0 Disable Modem Ctrl At Startup Minimum Write Timeout msec 0 Y r Timeouts Event Surprise Removal F Change the port number the drop down box AA222 Appendix A page 2 Communication Serial 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 Serial 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 communication Figure 2 Data transmission between the Master and the Slave are using the following format Data packet from a Master device CRC optional Data packet from a Slave device Recipient sender are revered for later use and can be ignored Both the Recipient and the Sender 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
63. ormation are put together Tymp and Reflex mixed one full screen with tymp extended tymp and one full screen with reflex extended reflex When an automated session takes place the instrument switches to a menu without any graphically interface called Do Test This is the control centre of the instrument where the list of tasks to perform are placed and executed Further more there are Do Tymp menu and a Do Reflex menu also without graphically interface that deals with the measuring of data That s why the menu item changes during a measurement AA222 Appendix A page 16 Menu s like EFT and Manual Reflex measurement uses the Do Tymp menu and the Do Reflex menu without the Do Test menu The inside both hardware and software of the instrument is designed with two sound channels This is necessary when we need to produce both a probe tone and stimuli at the same time The CPU is in control of a DSP with a two channel Codex When monitoring the state of the instrument you therefore needed to show the state of two channels The probe tone is always controlled from channel 2 Headers from the Instrument when things change Description Format OLMUO2 Menu Changed Menu US OLMUO3 Submenu Changed Submenu US EOT OLKYOO Key pressed Key US Status US EOT This is what strings the instrument can send when it sends the OLMUO2 Menu Changed header Setup Common Setup Subject
64. ote The hardware calibration is normally only done once in the instrument lifetime and at the factory Measuring points MP refers to Main board Index page 40 Measurements are made with reference to MP13 MP4 and MP15 GND Attenuator Calibration Enter the Attenuator Calibration menu from the Calibration menu by pressing F5 Att This is the calibration picture for channel 1 Calibration Attenuator Chi 0 dB 1000 Hz Connect an HC meter to 2 amp notice the output 1 2 Connect the AC meter to 1 5 Press Intensity Decr Incr until the HC meter exactly 20 dB more than Ul Hotice the outrut 2 Press 60 dB FZ Pre Intensity Decr or Incr until the HC meter Shows exactly 60 dB less than We Press 120 dB Press Intensity Decr or Incr until the HC meter 120 dB less than We bore and Press Swar to adjust the other Channel or press Back to exit dB 60 dB 120 Attenuator Calibration channel 1 Figure 1 Change to Channel 2 by pressing Swap F6 in order to calibrate channel 2 Calibration Attenuator Ch2 0 dB 1000 Hz Connect an meter to MPS amp notice the output Ul 2 Connect the AC meter to MPS 5 Press Intensity Decr or Incr until the meter exactly 20 dB more than Ul Hotice the outrut VZ Press 60 dB FZ Pre Intensity Decr or Incr until the HC meter Shows exactly 60 dB less than We Press 120 dB F3 Press Intensity Decr Inc
65. pdate for optimizing usage of components with various brands New Transducer board PCA 51010102 LED colour changed from Orange Green Blue to Red Green Blue New ear tips introduced Improvement of comfort level and sealing due to material change new part numbers Spare parts update Following Improvements are made for document number 80653108 instruments from no 781654 New Main board complete assembled board version 51007611 PCB 69010807 Compatible to previous version C235 and R 162 are modified for improvement of print out and to prevent instrument reset during printout New version 5400 Power supply 50000106 Following Improvements are made for document number 80653107 instruments from no 755691 New Main board complete assembled board version 51007610 PCB 69010807 Compatible to previous version Optimisation of the pump driver IC77 Following Improvements are made for document number 80653106 instruments from no 737822 New Main board complete assembled board version 51007609 Compatible to previous version Resistor R367 is modified to improve tolerance for flash programming AA222 Appendix U page 1
66. r or Menunumber US EOT FrequencyUSEOT SPF100 Set frequency in channel 1 Frequency US EOT SPA100 Set attenuator for channel 1 DB US EOT SPA101 Set attenuator calibration for channel 1 Intensity Measured Intensity US EOT Used for auto calibration SPA200 Set attenuator for channel 2 DB US EOT SICPO1 __ Delete all patient data o 2 _ Reset to Power up menu Updatedisplay onlyin Headset calibration SPINOO name US EOT max 15 characters SPDNOO name US EOT max 20 characters To control the keys on the Instrument use the following table to find the key number SPI100 Set interrupter for channel 1 1 is sound off and is sound AA222 Appendix A page 10 Code Code Key Code Fi 1017 Shit F1 1117 Tymp Reflex 1002 F2 108 Shift F2 1118 1006 F3 1019 Shit F3 1119 Audiometry 1007 1020 Shift F4 1120 Man Auo 1031 F5 1021 Shift F5 1121 Function 1032 F6 _ 1022 ShitcF6 1122 Forward 1030 Back 1023 Shift Back 1143 1133 psi X 1004 S Print 1009 PrintScreen 1109 1005 Pause 1001 New Subject 1101 Righ 1011 1012 Store 1010 NoResponse 1110 Bone 1033 1037 Frequency Decr 1025 Frequency Incr 1026 ____ 1038 Intensity De
67. r until the AC meter 1 120 less than 2 bore and Fress Swar to adjust the other Channel or press Back to exit 0 dB 60 dB 120 Attenuator Calibration channel 2 Figure 2 AA222 Service manual page 15 Fixed Attenuator Check Enter the Fixed Attenuator Check menu from the Calibration menu by pressing F6 Fixed Calibration Fixed Attenuator Sterz Chi 80 dB 1000 Hz 0 Connect an HC meter to 1 amp notice the output Wi 2 Press F kes and notice that level reduction is Reread ster 2 until all fixed steps are tested Press zwar 5 Connect an meter to MPS notice the output 1 Press and notice that level reduction is RerPead ster 6 until all fixed sters are tested i dB 15 dB 20 dB Attenuator Calibration Figure 3 Follow the instructions on the screen AA222 Service manual page 16 Software Calibration A software calibration must always be performed when the instrument has been opened for hardware calibration or if an EEPROM error has occurred The calibration is a service calibration which means that if the instrument has changed its values during time or because of manual chock corrections for moderate changes in the software can be made by means of the figures in the EEPROM To enter the calibration menus please switch off power hold down shift while pressing Print key turn on power again Hold the keys down un
68. ram Left Ear ComplianceReal US Compliancelmg US VolumeReal US Volumelmg US Pressure US Gradient US GradientUnit US NumberOfPoints US StartPressure US StopPressure US Pumpspeed US ProbeToneFreq US Press 0 US Complreal 0 US Complimg 0 US Press NumberOfPoints US Complreal NumberOfPoints US Complimg NumberOfPoints US EOT Right Ear Header Description Tympanogram Right Ear Compliance US Volume US Pressure US Gradient US Press1 US Old format Compl1 US Press2 US compl2 US GCREO1 Tympanogram Right Ear ComplianceReal US Compliancelmg US VolumeReal US Volumelmg US Pressure US Gradient US GradientUnit US NumberOfPoints US StartPressure US StopPressure US Pumpspeed US ProbeToneFreq US Press 0 US Complreal 0 US Complimg 0 US Press NumberOfPoints US Compleal NumberOfPoints US Complimg NumberOfPoints US EOT IPSI Reflex Left Ear Header Description GRILOO IPSI Reflex Left Ear Stimulus1 US dBHL1 US Pressure1 US Compl11 US Compl12 Old format US US GS Stimulus2 US dBHL2 US Pressure2 US Compl21 US Compl22 US GRILO1 IPSI Reflex Left Ear Frequency US Pressure US Method US NumberOfPoints US GS dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US lt CurveData gt GS until if the method is sequence and 6 reflexes recorded Right Ear Header Description GRIROO IPSI Reflex Right Ear Stimulus1 US dBHL1 US Pressure1 US Compl11 US Compl12 Old format US US GS Stim
69. row band noise Spectral properties White noise Spectral properties Narrow band noise Spectral properties White noise Spectral properties Pure tone Narrow band Spectral properties White noise Spectral properties Speech calibration standards and spectral properties Speech signal Speech weighted masking Spectral properties Speech signal Spectral properties Speech signal Speech weighted masking Spectral properties Speech weighted masking Spectral properties Speech signal Speech weighted masking Spectral properties ISO 389 3 ANSI 53 6 Valid for placement on the human mastoid ISO 389 2 ISO 389 2 ISO 389 4 values EN 60645 1 Narrow band noise electrically measured SPL EN 60645 1 White noise electrically measured ISO 389 2 ISO 389 4 values EN 60645 1 Narrow band noise electrically measured SPL EN 60645 1 White noise electrically measured ISO 389 7 Free field ISO 389 7 Diffuse field EN 60645 1 Narrow band noise SPL EN 60645 1 White noise EN 60645 2 ANSI S3 6 type B B E or STAFF EN 60645 2 ANSI S3 6 type B B E or STAFF EN 60645 2 type B or B E masking sound EN 60645 2 EN 60645 2 electrically measured EN 60645 2 type B EN 60645 2 type B EN 60645 2 Masking sound uncorrected electrically measured EN 60645 2 type B EN 60645 2 Masking sound uncorrected electrically measured EN
70. row or wide If ml is selected the gradient will be calculated the following way The program will go 50 daPa to each side from compliance value and save the two ml values The gradient is the average of the two ml values subtracted from the compliance value If daPa is selected the gradient will be calculated the following way The program searches from each end of the tymp curve and stores the pressure where the point at the tymp curve is equal to compliance value divided with 2 Gradient is equal to the two stored pressures subtracted from one another If Off is selected the gradient box will be removed from the user interface AA222 Appendix B page B3 Setting up Reflex Tests The AA222 can hold information for two reflex tests Reflex Test A and Reflex Test B Each test can hold set up options for 6 reflexes expressed in the table in the bottom of the screen figure see figure 5 The upper part of the screen describes how and with what method the 6 reflexes will be taken So the reflex set up is a matter of determined the start conditions for each of the 6 reflexes in the table output stimuli level and if in use or not and with what method the reflex will be taken Note that it is the same method for all 6 reflexes If you want one reflex with one method and another reflex with another method use Reflex Test A and Reflex Test B Setur Setur menu for Reflex Test A Reflex methad 5 Fixed F3 F4 F5 F1 000000
71. selected on or off and the level of sensitivity can be selected in the Reflex Sensitivity item Reflex Sequence Figure 28 AA222 Appendix B page B8 Reflexes pr sequence Factory 6 reflexes pr sequence Range 2 3 4 5 or 6 reflexes pr sequence Description Lets you have up to 6 reflexes pr sequence Note that the higher the number of reflexes is the less detailed the graphic will be Level of increase Factory 5 dB Range 5 6 7 8 9 or 10 dB Description How many dB the intensity will be increased between each single reflex Compensate for general drifting Factory Normal Range Off and Normal Description During a sequence reflex measurement the compliance may drift as you can see in the figure below To compensate for this drift select the Normal and the reflex drift will be removed Reflex with compliance drift Compensated reflex Compliance drifting Figure 29 Test stop criteria Factory Off Range On or Off Description Let you select if you want to skip the rest of the reflexes in a sequence when the condition are matched and continue with the next sequence Reflex Sensitivity Factory Normal Range Sensitive Normal or Robust Description See Reflex Sensitivity AA222 Appendix B page B9 Reflex sensitivity When using reflex the automatic methods Automatic or Screening the AA222 uses an algorithm to determined if a reflex is okay or not The level of sensitivity can be set with set up item Reflex Sensitivity where
72. send the data packet again The CRC value is calculated from the STX to and including the EOT the CRC value is added between the last US and EOT and must always be 5 digits Header and Data Formats A header consists of a control code SOH and 6 bytes 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 their data format Block Start Header and Block End Header If the Master wants to send a sequence of headers and do not want the Slave to respond on the EOT s the headers is send with a Block Start in the beginning and a Block End at the end The slave waits for the Block End before it processes the data Similar when the Slave sends back data to the Master it can pack the data headers in between a Block Start and a Block End to indicate when all the requested data is send Block Start Description Format BLSTOO Block Start p Block End Header Description Format BLENOO Block End pe AA222 Appendix A page 4 Audiological Information Tone Audiogram Left Phone Description Format GTLPOO Hearing Level Frequency US dB US frequency US GTLPO1 UCL Level Frequency US dB US frequency US GTLPO5 Masking Level Frequency US dB US frequency US Right Phone Header Description Format GTRPOO Hearing Level Frequency US dB US frequency US GTRPO1 UCL Level Frequency US dB US
73. te GetLength Counter t CRCValue StringToCalculate GetAt Counter AA222 Appendix A page 20 sprintf CRCString GetBuffer 10 y StringToCalculate Insert StringToCalculate GetLength 1 5d return StringToCalculate CRCValue pu Rokni This function receives data form the com port The 32 control generates an event when characters arrives at the com port and if any errors occur see documentation of the MSComm32 control void CtestAA222Dlg OnOnCommMscomml VARIANT InStringVar CHAR ch DWORD LastPosition Switch Case 23 m_CommControl GetCommEvent InStringVar m_CommControl GetInput InsStrangVar bstrVal InString GetLength 1 InString LastPosition ch InString GetAt LastPosition if ch 4 The EOT is received Now deal with the data in the InString Instring Empty j break AA222 Appendix A page 21 Appendix B User Set up in the AA222 Set up Navigation Entering the Set up Press shift Back and the instrument will return to the AA222 Main menu from any selected menu Press Set up F2 and you will enter the user set up of the AA222 Navigation In each menu is possible to move a bar see figure 1 trough the set up items and change the settings for the set up item Sub menu Menu Setur Common Setur Menu Fawer ur and Reflex Pause Menubar Baud Rate 57600 Remote Switch Manua
74. the intensity will go to the selected level If Unchanged is selected the instrument will behave as follows The masking will switch off at menu change or transducer change Not Heard Lines Factory On Range On or Off Description Selects to draw line to not heard symbols or not AA222 Appendix B page B11 Output Bone Masking Factory Opposite Ch1 Range Opposite Ch1 or Contra Description Selects the masking output from channel 2 when Bone is selected in channel 1 Bone at 8 kHz Factory On Range On or Off Description Selects if Bone outputs 8 kHz or not Microphone Selection Factory Internal Range Internal or External Description Selects between Talk Forward microphone internal or microphone socket on the rear plate external Output Ch2 Factory NB Range NB or WN Narrow Band or White Noise Description Selects the output in channel 2 in Tone Audiometry and H W test Audiometer Mode Preselect Factory Auto Range Auto or Manual Description Selects the Audiometer Mode to enter when the Audiometry Key is pressed Manual Audiometry Set up Menu Hanul Audiometra Setur Menu Intensity Sterdoun OTT Hudieometer Frequencies 125 Hz On Jumr Mode Bottom Pulse Function 5 ultirulse Pulse Lenasth 500 Level decr incr 5 dE F5 F6 Fi 22 F Back Manual Audiometry Set up Menu Figure 33 AA222 Appendix B page B12 Intensity Stepdown Factory Off Range Of
75. til you can enter a password The factory setting of the password is 1 2 3 4 but dealer may have changed it in order to protect the calibration Calibration Menu F2 F3 F4 F5 F6 Back 000000 The Calibration Menu Figure 4 Notice For calibration of the Universal Transducer for both types of probetips you must carry out the probe calibration twice Repeat pages 17 21 after switching probe tip Probe Calibration To enter this menu from the Calibration Menu Press Probe F2 Calibratian 4 FS F6 Back Fi F2 F3 F 000000 0 Probe Calibration Menu Figure 5 AA222 Service manual page 17 Pressure Calibration Calibration Pressure Calibration ADE Calibration Line lem S330 Pressure Calibration Figure 6 Looking at the picture you will see two lines if the instrument is calibrated in a diagram The dotted line is the calibration line that graphically gives you information regarding the calibration of the pressure The normal line is an average line and by comparing the two lines you can get quick overview of the pressure calibration You can also read the actual ADC values under Points if necessary To Calibrate Pressure System Press Calib F1 and follow the instructions on the screen To Test the Probe Calibration If the probe is calibrated you can test the calibration among other things in the Probe Real Mode Select Real F6 to enter this menu Probe Tone Calibration Frobe
76. tion inserts factory values all over the calibration calibration values maximum levels calibration levels extended range settings and filter settings but leaves the setup data untouched The Total function Total F6 is a function that is designed for pre calibrating the EEPROM if the IC is replaced The function inserts values into the calibration and the setup that lies close to the final calibration Note Using the Calib and the Total function always requires the instrument to be recalibrated AA222 Service manual page 23 Accessories 80003602 TDH39 Audiometric headset 80020004 IEC M21 symmetric mono Earphone cable 80003401 HBA Audiometric head band 80044501 TDH39c contra headset IA 80020504 IEC M41 symmetric mono Earphone cable 76401301 TDH 39P 10 Ohm Earphone Telephonics 80044802 DD51 Cushion 80000701 B71 Bone Conductor 30 plug 80220202 IEC B11 Conductor cable 80220501 B71 Bone Conductor 80220701 P3333 Headband for B71 AA222 Service manual page 24 33514801 Accessory box For Bone Conductor 80050301 CIR33 Insert earphone kit 37310301 Insert cable IBC I1 80201403 APS3 Patient response switch 80300202 ATP AT235u Transducer 80201001 SST 235 Shoulder strap 80201 101 WST235 Wrist strap 80407702 Cable USB 2m 804 70xxx Mains cables country specific 80406801 CATAO Calibration Cavity 80043201 DD45 Audiometric headset Optional 80042802 DD45 telephone 100hm For DD45 headset AA2
77. tory 200 daPa Range 300 to 25 daPa in 25 daPa steps Description Start Pressure indicates what pressure will be established as start out point for the pressure sweep Stop Pressure Factory 400 daPa Range 25 to 600 daPa in 25 daPa steps Description 15 the pressure where the sweep will stop AA222 Appendix B page B2 Pump Speed Factory Automatic 150 daPa sec 50 daPa sec 150 daPa sec Range Minimum 17 daPa sec Medium 50 daPa sec Maximum 150 daPa sec or Automatic 150 daPa sec 50 daPa sec 150 daPa sec Description A slow speed will be more time consuming but may give more detailed information The horizontally displacement of the tympanogram peak in the sweeping direction caused by inherent hysteresis of the system will be smaller with lower speed Automatic is a mode where sweep speed at the beginning will be Maximum 150 daPa sec and when the gradient is smaller than 5 the speed will be slowed to Medium 50 daPa sec When the peak is bigger than 5 again the speed will be set to Maximum 150 daPa sec again Compensation Mode Factory Compensated Range Compensated or Non compensated Description Mode is set to Compensated if you want to have the curve displayed at the floor of the coordinate system In Non compensated mode the tymp curve will be displayed including the ear canal volume Gradient Unit Factory ml Range ml daPa or Off Description The gradient is an expression of the shape of the tymp curve Nar
78. tral properties High Pass noise HP Spectral properties Pure tone Wide Band noise WB Spectral properties Low Pass noise LP Spectral properties High Pass noise HP Spectral properties General about levels Pure tone Narrow band noise Spectral properties White noise Spectral properties ISO 389 1 for TDH39 Interacoustics Standard As Broad band noise specified in EN 61027 but with 500 Hz as lower cut off frequency Interacoustics Standard Uniform from 500 Hz to 1600 Hz 5 dB 1000 Hz level Interacoustics Standard Uniform from 1600 Hz to 10KHz 5 dB re 1000 Hz level Interacoustics Standard Interacoustics Standard As Broad band noise specified in EN 61027 but with 500 Hz as lower cut off frequency Interacoustics Standard Uniform from 500 Hz to 1600 Hz 10 dB 1000 Hz level Interacoustics Standard Uniform from 1600 Hz to 4000 Hz 10 dB 1000 Hz level The actual sound pressure level at the eardrum will depend on the volume of the ear See Table 4 for details ISO 389 1 ANSI 53 6 for TDH39 ISO 389 1 ANSI 53 6 ISO 389 4 values EN 60645 1 Narrow band noise SPL EN 60645 1 White noise AA222 Service manual page 7 Bone conductor Insert phones Insert masking phone Free Field output calibrated on location Earphones Bone conductor Insert phones Insert masking phone Free field output Pure tone Pure tone Nar
79. ulus2 US dBHL2 US Pressure2 US Compl21 US Compl22 US GRIRO1 IPSI Reflex Right Ear Frequency US Pressure US Method US NumberOfPoints US GS dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US lt CurveData gt GS until dB6 if the method is sequence and 6 reflexes recorded AA222 Appendix A page 7 Contra Reflex Left Ear Header Description GRCLOO Contra Reflex Left Ear Stimulus1 US dBHL1 US Pressure1 US Compl11 US Compl12 Old format US US GS Stimulus2 US dBHL2 US Pressure2 US Compl21 US Compl22 US GRCLO1 Contra Reflex Left Ear Frequency US Pressure US Method US NumberOfPoints US GS dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US lt CurveData gt GS until dB6 if the method is sequence and 6 reflexes recorded Right Ear Header Description GRCROO Contra Reflex Right Ear Stimulus US dBHL1 US Pressure1 US Compl11 US Compl12 Old format US US GS Stimulus2 US dBHL2 US Pressure2 US Compl21 US Compl22 US 1 Contra Reflex Right Ear Frequency US Pressure US Method US NumberOfPoints US GS dB1 US mS 0 US ml 0 US mS NumberOfPoints US ml NumberOfPoints US GS dB2 US lt CurveData gt GS until if the method is sequence and 6 reflexes recorded Decay IPSI Reflex Left Ear Header Description GAILOO Decay IPSI Reflex Left Stimulus US dBHL1 US Pressure1 US Result1 US Timebase1 Ear Old format US Compl11 US Compl12 05 05 GS 5 timulus2 US dB
80. ur 36 Cabinet Rear side Connections nanananaanannnnanannnnanannnnannananananannnnunanannananananannnnanananananannananannnnananananannana 36 Transducer Wire and Tube reme reme sre 37 Printer Connections 1 38 5 r r 39 Analog gt 39 40 COMPONEN I MOMS eee 41 AA222 Service manual page 1 Appendix A Description of Serial Interface 1 Cat ON ona T _____ __ _______ 1 Installing the USB Driver On the PO _____ ______ ____ _ _ _ _ ______ 1 EDEN 3 PAG OO GI Calli ______ 5 6 ETN Cl ACO 7 EEPROM _ ______ __ __ 10 E Brio aO RE lia ansan dur b ta a aaa 12 Manual Audiomety SetuP 12
81. ur F3 Restores all seturs to Factors Settings F1 F2 F3 F4 F5 F Back e e e e e EEPROM Menu Figure 44 The AA222 provides a tool for administrating the information stored in the setups It can store restore the setup and initiate to factory settings either from this EEROM menu or restore setup data trough a key press during power up When the setup of the instrument is done you can enter this menu and store all settings as an original setup If a user changes in some setup items and cannot get the instrument to work properly afterwards ask the person to switch off power hold down shift F4 switch power on again and press Yes F1 when the instrument asks you to restore setup to original setup By doing so you bring the setup back to the settings you stored before you send it to the user You can also guide the user in to this EEPROM menu but that requires you to tell the user the password Factory setting is our way of doing the setup AA222 Appendix C page 6 Appendix 222 U Update News Following modifications are made for document number 80653110 instruments from serial 899714 New Main board PCA 51007615 Compatible to previous versions Components modified for optimisation Print Board Diagrams and BOM s removed Accessories and spare parts update Following modifications are made for document number 80653109 instruments from serial 851314 New Main board PCA 51007612 Compatible to previous version PCA u
82. will search for current and updated software by looking on your computer on the hardware installation CD or on the Windows Update Web site with your permission Read our privacy policy Can Windows connect to Windows Update to search for software Yes now and every time connect a device No not this time Click Next to continue Click Next and the following window should appear V Found New Hardware Wizard This wizard helps you install software for Dual 15232 9 If your hardware came with an installation CD or floppy disk insert it now What do you want the wizard to do Install from a list or specific location Advanced Click Next to continue Insert the CD if the PC is not connected to the internet click Next V Found New Hardware Wizard Please wait while the wizard searches 8 Dual 85232 Cancel When the Driver is found the following window appears AA222 Appendix A page 1 Found New Hardware Wizard Completing the Found New Hardware Wizard The wizard has finished installing the software for USB Serial Converter Click Finish to close the wizard Finish Click Finish the Found New Hardware Wizard now starts over again because a driver for Serial Converter B needs to be installed follow the directions above The Driver for the USB Serial Converter is now installed t
83. you can choose between Sensitive Normal or Robust The AA222 has two different modes of leveling sensitivity ml or 9o can be set in the Advanced User Set up and depending on what method you will get different results Look in the following Figures for the difference When using auto search for reflexes the algorithms in the software will go on until intensity has reached maximum level for the selected transducer at the give frequency So the software in two ways can accept the reflex the reflex does not touch the test box the test box is normally invisibly or intensity is at maximum level You can se what a test box is by looking at the Figures below The test box is the dotted rectangle in the middle of the Figure Reflex sensitivity in ml 105 dB HL 105 dB HL Sensitive 0 05 ml Normal 0 10 ml Robust 0 15 ml Reflex Sensitivity in ml Figure 30 The first reflex is okay because the reflex does not touch the test box The two last reflexes is not okay according to the algorithm but has been accepted because of maximum intensity level Reflex sensitivity in 85 dB HL 90 dB HL 95 dB HL Sensitive 2 Normal 4 Robust 6 Reflex Sensitivity in 96 Figure 31 All three reflexes are okay because none of them is inside or touching the test box The height of the test box when using sensitivity depends on the size of the ear volume The sensitivity condition is used by the auto method screening method and by the sequ
84. z 6000 Hz 8000 Hz WN LP and HP can be selected as On or Off Description Use the frequency keys to select the desired frequency and press Change F1 to select On or Off Note This item has influence on both ipsi and contra frequencies Ipsi frequencies 500 Hz 1000 Hz 2000 Hz 3000 Hz 4000 Hz WN LP HP Contra frequencies 250 Hz 500 Hz 750 Hz 1000 Hz 1500 Hz 2000 Hz 3000 Hz 4000 Hz 6000 Hz 8000 Hz WN LP HP Autotest Max upper limit Factory 110 dB Range From 90 dB to 110 dB in 5 dB steps Description Safety percussion to prevent the subject to get a higher output level than the level from this setup item during an impedance auto test measurement Default manual intensity Factory 80 dB Range From 60 dB to 90 dB in 1 dB steps Description Start intensity level for manual impedance audiometry AA222 Appendix C page 4 AGC for ipsi reflex stimuli Factory Off Range On or Off Description f ear volume is smaller than 2 ml the AGC Acoustic Gain Control for ipsi reflex stimuli will correct the level with the same level correction as for the AGC Probe tone control The function will avoid too high levels in ear with smaller ear volumes If the ear volume is higher than or equal to 2 ml the AGC Stimuli system will do nothing Advanced Audiometry User Setup Calibration Advanced Audiometra Menu Audiometra Headset Bone Symbols Speech Mode Standard F5 F6 F1 F2 F3 F4 Back 000000 Advanced

Service Manual

Contents

Download Pdf Manuals

Related Search

Related Contents