Operating Instructions Detective Audiometer
Contents
1. Operating Instructions Detective Audiometer MAICO vA UN Oa S mMexectwe amp PA X oe Y e a Z ak Maico Diagnostics 7625 Golden Triangle Drive Eden Prairie MN 55344 Toll Free 888 941 4201 Maico Diagnostic GmbH Salzufer 13 14 10587 Berlin Germany Telephone 030 70 71 46 50 IM MAICO Operating Instructions Detective Audiometer TABLE OF CONTENTS MARIA es cate eta eA eA CALL M Im E EAE M DA CM AMA AT PEP A EN 1 Tdnsteuumient descPIDEGOT cba aeta Rot tumet nate Si eG ni ttem Msn etse cM opt leet bee toatl 2 PESTA ACTING and Ns pection eatem idee ri ris at e tp te Sg ald e Sd va soe E e n Rb 3 2 1 External MEN STOEL ON stored cin nmm Ru cast aM s MEM AES E CM aoe Sanaa M M i 3 PAS MAP e Tg digo NN EET EU UM 3 3 NnstallatiOnvalid StU tC 4 31 Where toset UD arca eA Eu eu ee Le CM M LLL M ARI M MMC MD MM LE 4 92 HOWTO Se ED ee pee nr vere tnu thcanBatato ataca attesa MoruS UA iret er trey tema iran la eer 4 3 3 Galibr tinig thie deviens res IER t P olt lO eibi iSo ato Leid al EP ai ERSl GM eae tent es 4 3 4 Display anid control paneles des oue ee vt etuer ie eo dee RUNE Ugo oc i veo hie PIS t PRSE 5 4 Basics related to hearoelserdets quod assai ob oniog labor anota etel ocnlos eure 6 dd Beard disorte Saa sce etsi detto vo oe sib oia Id RIPE SEPESuh Mta M RO Suh Med a Med gsm Dna 6 22 Incidence ofr ieatlrig2. 5 Performing Automatic Audiometry 5 1 Preparing the child Directions regarding the hearing test should be explained to the child The child will hear a series of soft beeps and should listen very carefully The child should press and release the response button as soon as he she hears the sound even if it is very soft Testing will be conducted in the right ear first and then the left ear The child will hear directions given through the earphones and should listen to those carefully when they are presented After the test is explained carefully place the headphones on the child with the RED phone on the RIGHT ear and the BLUE phone on the LEFT ear Be sure that the speaker portion of the earphone is lined up with the opening of the child s ear canal Give the hand switch to the child and the test is now ready to begin 5 2 Testing To start a new test press the NEW button 16 The Detective will display the automatic assigned patient ID number Press enter to confirm this number and the main test screen will be displayed with a blank audiogram or table ready to start a new test If you would like to enter a customized ID number press the NEW button 16 then enter an ID number up to 9 digits using the numbers displayed next to the keys on the front panel of the instrument Figure 1 Press ENTER 15 to confirm and begin the test The following procedure is based on the basic screen that appears Chapter 7 will instruct you how
3. the most widespread reason for problems with hearing is a loss caused by disorders of sound conduction Mostly this is temporary and varying within rather wide limits The hearing loss can differ from day to day by 5 to 30 dB Reasons for this can be e excessive production of ear wax e disorder of ventilation of the middle ear e inflammation infection of the middle ear otitis media A chronic inflammation of the middle ear can cause a permanent impairment of the ear if it remains untreated 4 2 Incidence of hearing loss Studies show that one out of every thousand children is born with a serious sensory or neural hearing disorder Two more children are diagnosed during early childhood Much more frequently a conductive type hearing loss is found Otitis media is the most widespread disease during infancy and childhood and thus the most frequent reason for consulting a pediatrician Over 9096 of all the children are diagnosed with otitis media once or several times The World Health Organization WHO states that otitis media is the worldwide number one reason for hearing loss during childhood Author Dr Jerry Northern in his book Hearing in Children supposes that 30 of all the children under the age of eleven suffer from an ear infection and therefore have a certain degree of hearing loss If the hearing loss remains untreated a delay in speech development is inevitable IM MAICO Operating Instructions Detective Audiometer
4. 6854s derer dite ort a detuvo etre duet o AN HER PO ERN 7 5 Pert rming BUDAPEST 8 5 V Preparing the children A EE 8 5 2 TEWRAT E EAE An EA SAE NT NEA ET RE 8 sac egre T HE M 10 EP uEVeIBIOLUOT SH BS ea oeonciusutsttief das mindestens dnte tado e aang aeons tana a 10 5 5 Changing the voice prompt Ianalladeussn ie ben or say e tebtrret botes ib ertet eret e Re RA 11 6 Performing Manual pure tone TESTS stat Jotul ence ok eoo ones pe botpun lp bor RR Hos 12 6 1 Changing from an automatic to a manual TesEs s petu Fut uidet ated eaae Fatebuntur sui 12 6 2 Testis NINE Goce Soot sansa ca ash a nde n Inf DU MD ND 12 SRM eA EIE OO DOO E T DENS 13 Dat Evaluation ot the test OST eos doses adden leiten AEE AAA AAE nct 13 7 Set up the Detective Audiometer for your individual needs sssssssssssssseese 14 8 Care and maintenance Of the IBPRUERGBIE d eoa dct pre cH ET ec a IS UR EU 17 Oi Technicakda taand aACcesSorieS zeoe eE AAL AE T 18 TO roupleshootN grensa a a deuten ER 20 11 After sales service and calibration Tusce Rl e pre Sepe a Era e Ra e SE b E o PASTORE RIS 21 LT Aftersales SIN OB ead ete t et eee do do aah aN eh a oh 21 TT Gall DES OE ost te uutemdtteu test ee uta memet etum m i aS EE E dE 21 11 3 Shipping instructions for calibration and Tepall io uero err P EDEN TUUS ERN GS 22 M2 SOLER OCU ALO MS wail oid dott ret LL he aha SM ATEM LOC CODE 23 IM Operating Instructions Detective
5. Audiometer MAICO 133 herma printer Setup eel ees caesos mena pp eS MN ME REIR ELI M DI MD DRM DEED EM ES tque 24 13 1 Des ripti omot tie UIT oce kis Pul d aie petrus boite david pus urs edd Pod dhckhs Side eal datas 24 cS As ian WAL AAG NEM UTR 26 13 5 WAS Eel ATOM Liu dose ere egeo t ep vanes P rex volo dup va rus d rp v rcd ug VR USE NR GIN TERES 26 t4 Using the thermal piter oe oso cet tem a b etui et neta tenete ette be becas 27 14 1 Turning the printer on SEDIT vious deii ea ote eeiat b befei i albeit A Hc iux 27 14542 Inserting paper into the DINE iecit uia et Exe e b rd Probe re net 27 14 3 Removing paper from the EITEST e suo dente ede bees en t este POvisd ei rungs ed CARS Rar adem 27 14 4 Paper Teese Beto sd Op NT Ein OR BR loto NT Edere teen tpe death ciate eaten 28 nsu ir NH RES 28 TAG MING esac aula Dies a Lalani abis Sus nra de tart ePi e ru ah EU E t aede Se aetna 29 IF wa pou C pd dT Kp 29 14 9 ToOUD GSTOOH IO sodio A noia od Hte a tob die ub Hebdo i bieiliqstqa its 30 14 81 SHIT soc RT Lr 30 14 5 2 Proble SOMN suceso tdt ovp natia c m als quete Gch rts adsueti cedars 30 14 9 Spare DRESS Eos eese resco tr t e la ne en E E bte date blo td tea Ain eere stes aet 31 IM MAICO Operating Instructions Detective Audiometer WARRANTY This warranty is extended to the original purchaser of the Detective Audiometer through the authorized Special Instrument Distributor from whom it was purchased This warranty cov
6. Installation After unpacking the unit make sure it is complete and undamaged If you encounter any problems contact technical support at Maico Diagnostics 1 Place the appliance on a work surface away from water taps basins and sources of heat Check the polarity and the voltage level on the power supply The voltage in the connector should range between 6VDC to 9VDC AC input 100 240 V 1 0 A 50 60 Hz Connect the power supply to the thermal printer Connect the serial communication plugs to the printer and the Detective Audiometer Use the data transfer connecting cable supplied with the unit 26 IM MAICO Operating Instructions Detective Audiometer 14 Using the thermal printer 14 1 Turning the printer on and off Turn the printer on e If the printer is off press the Paper Feed button C The LED A will light up e fthe printer is on stand by press the ON OFF button B Stand by e Press the ON OFF button B The LED A will flash Turn the printer off e Press the ON OFF button B for more about three seconds The LED A will turn off 14 2 Inserting paper into the printer Manual load 1 Open the cover 1 of the printer 2 Lift the green lever 4 in the printer 3 Place the end of the paper with the heat sensitive side down under the roller 2 of the printer 4 Slide the paper past the roller Place your fingers on the positions of the paper guiding ribs 3 5 Put th
7. field is already highlighted when starting the test the Interruption Mode is selected The tone is presented as cross hairs in the audiogram view Figure 1A The horizontal axis indicates the frequencies 250 Hz 8 kHz and the vertical axis indicates the levels at which the test tone is given Frequency of the tone being presented in the table view is indicated by the column in which the cursor is located The level of the signal is displayed as a numerical value under the current test frequency Figure 1B When the patient pushes the patient response switch to signal that he she just heard the test tone the RESPONSE field is highlighted on the display When the patient s hearing threshold is established or screening protocol has been met press the ENTER key to manually store the result on the screen The level and frequency of the response is marked by an O for the right ear or an X for the left ear in the audiogram view The response in the table view is stored as a numerical value in the row for the appropriate ear The cross hairs automatically go on to the next frequency Change level with arrow keys as described above Save the patient s response by pressing the ENTER button 15 The measurements are connected by a line in the audiogram view Figure 2 Proceed with the test as described above for all of the other test frequencies The next measured points will be reflected on the table After saving the results at the highest t
8. 3 Error Messages There are several errors that the Detective audiometer is programmed to monitor If any of the following errors occur an appropriate instruction will be played through the earphones to the patient and the error will be displayed on the screen for the operator to view Multiple responses to a tone If the child is continuously pressing and releasing the response button multiple times after only one tone is presented then the following message will play through the headset Listen carefully and make sure you hear a tone before pressing the hand button Release patient response switch If the child is continuously holding down the response button without releasing it the following message will play through the headset You are not releasing the hand button quickly enough Remember to press and release the hand button as soon as you hear a tone Not responding at maximal level If the child is not responding at all to the tones even at the loudest level then the following message will play through the headset As soon as you hear a tone even if it is very soft quickly press and release the hand button NR no response will be recorded for particular ear and frequency for which this condition occurred 5 4 Evaluation of the test The test results are recorded on the screen display for each test frequency for both ears NOTE Most states define a normal hearing level for a pure tone screening as 20 dBy However i
9. A OH NDAEY paar ble ERE Ep ahin DEEE 774 Agi t po cBybb ubugs 304057 13216 l 8528 C 0123656789 lt gt GABCDEFGHI JRLMNOPQRSTUUW RYZ E abcdefghijklmnopars 1220 tuvwxyzt1 at 883a amp 8ceBe TT1H Internal Exftooo uj OUgE Bh f L GANL ON eusieciet GEE d AAAS ples Lbr I A Eds P OBEEE ITI rad 190p00 OOuUPPOOUYS 20 185 9 1 F2 e IM MAICO Operating Instructions Detective Audiometer 14 6 Printing 1 Turn the printer on 2 Make sure there is thermal paper in the printer 3 In the Detective Audiometer user manual display highlight PC or Printer and then select Printer Press the PRINT button and choose one of the following print commands from your Detective Audiometer 1 Choose to print only the current session by pressing PRINT again 2 Choose to print all the stored sessions in the database by pressing START 14 7 Cleaning Before performing any cleaning operations the machine must be disconnected from any power supply and data Do not use solvents or abrasive detergents to clean the printer A soft damp cloth will suffice When cleaning the inside of the cover only use dry cloth or a small vacuum cleaner WARNING DO NOT TOUCH THE PRINTING MECHANISM PRINTER ROLLER OR THERMAL HEAD 29 IM MAICO 14 8 Troubleshooting 14 8 1 LED indications Operating Instructions Detective Audiometer LED indication Meaning Actio
10. AICO 14 9 Spare parts list Part Description Part 1025 2067 Detective Audiometer AC power cord Part 1149 1044 Printer Part 1149 1046 Printer AC power supply Part 1025 408 Printer AC power supply cord Part 1025 2068 Printer cable Part 5529 Printer paper Part 4687 TDH 39 headset Part 2169 Patient response switch X mA dum em em e lt Part 1087 2012 Blue overlay for thermal printer 31 1162 0602 REV A 10 06
11. Detective audiometer is intended for use with school age children in order to quickly screen for a hearing loss or establish an air conduction threshold The Detective Audiometer has both a manual pure tone audiometer as well as automatic audiometry function for older children This allows accurate screening of more mature children while allowing the tester time to attend to other tasks during the test such as filling out necessary paperwork or screening documentation IN Operating Instructions Detective Audiometer MAICO 2 Unpacking and inspection 2 1 External inspection Your Detective Audiometer was carefully inspected and packed for shipping However it is good practice to thoroughly inspect the outside of the shipping container for signs of damage If any damage is noted please notify the carrier immediately 2 2Unpacking Remove the upper layer of packing material from the top of the instrument Carefully lift the instrument from the shipping carton and remove the plastic bag Inspect the case for signs of any damage Notify the carrier immediately if any signs of mechanical or physical damage are found will ensure that a proper claim is made Save all packing materials so that the claim adjuster can inspect them as well When the adjuster has completed the inspection notify your Maico Special Instrument Distributor Save all the original packing materials and the shipping carton so the instrument can be properly packag
12. Errors NONE All frequencies will be tested only once for each ear regardless of recorded results Only 1kHz 1000HZ will be retested in order to make sure that the patient s responses are valid All Errors Frequencies that have errors recorded instead of a threshold value will be retested at the end of the test 1 kHz amp Errors 1000Hz will be retested as well as all frequencies containing recorded errors Continue on Error ON OFF ON will continue to test the next frequency after an error is recorded without stopping the test OFF will pause the test after an error is recorded to allow the operator to intervene Test with Pulse tone ON OFF ON will use pulse tones when testing in the automatic audiometry mode 15 IM MAICO Operating Instructions Detective Audiometer OFF will use a continuous tone when testing in the automatic audiometry mode Voice Prompts ON OFF ON will allow voice prompts to be presented to the patients during testing These include instructions and error messages OFF will conduct testing without any voice prompts to instruct the patient The Advanced Settings screen Figure 6 displays additional audiometry settings Advanced frequency selection Allows only specific frequencies to be displayed and tested Non the Sud est test ee Choose On Off for each individual frequency The 1000 Hz Advanced Frequency selection frequency is turned on by default and cannot be Pulse To
13. be performed by an authorized service center The use of non calibrated audiometers is not allowed 23 IM MAICO Operating Instructions Detective Audiometer 13 Thermal printer set up The thermal printer is standard with the Detective Audiometer 13 1 Description of the unit Cover Printer Roller Paper Guiding Rib Lever Thermal Head 3 4 Printer mechanism Paper Storage 2o0UdBi amp UuNO A LED Indicator B ON OFF Line Button C Paper Feed Button IN T C R W MAICO B 24 8 Operating Instructions Detective Audiometer D Power Input Connector E Serial Communication Connector F Serial Communication Plugs 25 IM MAICO Operating Instructions Detective Audiometer 13 2 Safety warnings Please be aware of the following safety instructions This machine is designed to print on thermal paper only The manufacturer is not liable for damage caused by improper or incorrect use of the unit The thermal head 5 is delicate and can get hot Do not touch this part Always keep the unit dry Do not touch the unit when your hands or fingers are damp In the event of breakdown or faulty operation turn the unit off and do not tamper with it For repairs contact technical support at Maico Diagnostics The thermal printer can only be used with main voltage The instruments are not intended for operation in areas with an explosion hazard 13 3
14. d press ENTER 15 The next screen will show you the language options that are programmed into the Detective Press the down arrow key until the language you wish to select is highlighted and press ENTER 15 You can now start the test IN Operating Instructions Detective Audiometer MAICO 6 Performing Manual Pure tone Tests 6 1 Changing from an automatic to a manual test The automatic audiometry test can be over ridden at any time in order to continue with a manually administered test Press STOP 11 at any time during the automatic test to pause the test Press STOP 11 again in order to end the automatic test and continue with a manual presentation of the tones Test Finished will be displayed on the screen to indicate that the automatic test has been stopped 6 2 Testing in manual mode Press the STOP button 11 twice as stated above in order to stop automatic testing and begin manual testing Any thresholds that were stored during the automatic test will remain on the screen By pressing either the lt button 17 or the button 20 the frequencies can be selected Choose the frequency to be tested and increase the test level by pressing the A button 21 or decrease the test level by pressing the W button 19 The chosen test level is shown on the display A tone will be presented when you touch the STIMULUS button 11 As soon as the button is touched the STIMULUS field on the display is highlighted If the
15. do not light up s the power switch on s the power cord plugged in correctly in the power connector s the wall outlet working No sound from headphone s the headphone cable plugged correctly in socket Is the lead loose or defective If your instrument still does not work properly after this short check please consult your dealer or send the instrument to your dealer or a service center Please include a detailed description of faults 20 IN Operating Instructions Detective Audiometer MAICO 11 After sales service and calibration 11 1 After sales service The Detective Audiometer may be repaired and serviced only by your dealer or by a service center recommended by your dealer We urgently advise you against attempting to rectify any faults yourself or commissioning non experts to do so In the event of repair during the guarantee period please enclose evidence of purchase with the instrument In order to ensure that your instrument works properly the Detective Audiometer should be checked and calibrated at least once a year This check has to be carried out by your dealer When returning the instrument for repairs it is essential to send the headphones as well Send the device to your dealer or to a service center authorized by your dealer Please include a detailed description of faults In order to prevent damage in transit please use the original packing if possible when returning the instrum
16. e green lever down again 6 Place the roll of paper in the paper storage 7 7 Close the cover of the printer so that the end of the paper sticks out the unit Automatic load 1 Make sure the printer is on or in stand by 2 Open the cover 1 of the printer 3 Place the end of the paper with the heat sensitive side down under the roller 2 of the printer 4 The printer roller starts to rotate and pulls the paper through the printer 5 Place the roll of paper in the paper storage 7 6 Close the cover of the printer so that the end of the paper sticks out the unit 14 3 Removing paper from the printer 1 Open the cover 1 2 Lift the green lever 4 in the printer 3 Gently pull the roll of paper back until the paper is completely out of the printer 27 IM MAICO Operating Instructions Detective Audiometer 14 4 Paper feed T 2 Make sure the printer is on or in stand by Press the Paper Feed button C until the paper has reached the length you require 14 5 Self test 4 1 Turn the printer off 2 3 Press both the Paper Feed C button and the ON OFF button B for more about three Make sure there is thermal paper in the printer seconds The printer will print the following Firmware Revision Printer type P ESA CO 7812349627891 0 BABCDEFGHIJKLMNOPQRSTIUHRYZINJ abcdefghijklmnopqestuvuxyzt1 e daadoPebllli fafl oodugOUoL O f E S A dhh 926044 O MAR
17. ecision by pressing the appropriate button For hygienic reasons the ear cushions of the headphone should be cleaned after finishing the examination A new test can now be started by pressing the NEW button 16 then the ENTER button 15 to confirm A patient ID will automatically be assigned to the patient and can be viewed on the main test screen If you would like to enter a customized ID number press the NEW button 16 then enter an ID number up to 9 digits using the numbers displayed next to the keys on the front panel of the instrument Figure 1 13 IN Operating Instructions Detective Audiometer MAICO 7 Set up the Detective Audiometer for your individual needs The Detective Audiometer is pre configured for most requirements If you still require some functions to be set up for your individual needs enter the user menu After having set the changes they are saved in the device The settings remain unchanged even if the device has been switched off Press the MENU button 9 By pressing the A 21 or W button 19 the different menu options can be chosen The selected menu is highlighted Press the ENTER button 15 to choose the respective submenu and to select confirm and save the new setting Press the MENU button 9 again to exit the respective menu or user menu Figure 3 After leaving the user menu you will return to the test you last selected The possible settings of the Detective Audiometer are as fol
18. ed if it needs to be returned for service or calibration Open the box containing the Detective Audiometer and check to see that you have the following items Detective Audiometer Detective Audiometer AC power cord Printer Printer AC power supply Printer AC power supply cord Printer cable Printer paper 1 roll TDH 39 headset Patient response switch Operating manual with warranty card Calibration certificate A carrying case is also available for your Detective If you haven t purchased a carrying case be sure to save the box your unit came in It has been specially designed to protect it during transportation Please check that all items listed above are received in good condition If any items are missing or damaged immediately notify your Maico Special Instrument Distributor IN Operating Instructions Detective Audiometer MAICO 3 Installation and setup 3 1 Where to set up A quiet room furnished with a desk or table is ideal for using the Detective Audiometer If a separate room is not available try to locate an area with minimal noise and distractions Remember background or ambient noise can distract the child and affect the results of the test Electro medical instruments emit strong electromagnetic fields e g microwave radiotherapy devices which can influence the function of this device Therefore do not use those types of instruments in close proximity to the Detective Audiometer The test
19. ent 11 2 Calibration The optimum length of time between calibrations for audiometers varies depending upon the treatment given the instrument and the headphones It is recommended that the instrument have a laboratory calibration at least once every year Since rough handling such as dropping the headphones can easily cause calibration errors it is advisable to establish a biological calibration check as soon as you receive the instrument Should you feel at a later date that the audiometer s calibration might be in error perform a biological check on a known ear If all retests show major changes calibration is probably in error All repairs and calibrations should be completed at an authorized Maico Special Instruments Distributor service center This assures the use of quality materials by trained and experienced technicians using the proper accurate equipment Maico Special Instruments Distributors are located in major cities throughout the world To minimize costs and time delays contact the Distributor that you purchased the instrument from If you don t know who that is or need to find the Distributor closest to you contact the factory at Maico Diagnostics 7625 Golden Triangle Drive Eden Prairie MN 55344 Toll free 888 941 4201 Phone 952 941 4200 Fax 952 903 4100 21 IN Operating Instructions Detective Audiometer MAICO Customers outside of North America and South America may contact Maico Diagno
20. ers defects in material and workmanship for a period of one year from date of delivery of the Detective Should the Detective Audiometer require service due to a defect in material or workmanship Maico at its option will repair or replace the instrument at no charge except for transportation to and from the point of service It is the purchaser s responsibility to return the Detective Audiometer to the Maico Special Instrument Distributor from whom it was purchased or directly to Maico after receiving a return authorization This warranty does not cover breakage or failure caused by tampering misuse carelessness accident or modification The warranty is void if the instrument is serviced by other than an authorized Maico Special Instrument Service Center NOTE Specifications in this manual are in effect at the time of printing Maico reserves the right to modify or change specifications or design at any time without notice or incurring obligation WARNING The Detective Audiometer is designed to be used with a hospital grade outlet Injury to personnel or damage to equipment can result when a three prong to two prong adapter is connected between the power plug and an AC outlet or extension cord IN Operating Instructions Detective Audiometer MAICO 1 Instrument description Our products are designed to put children at ease allowing you to make a diagnosis quickly easily and accurately The
21. est frequency the cross hairs automatically return to the test results at 1 kHz 12 IN Operating Instructions Detective Audiometer MAICO Retest the results at 1 kHz The patient is now trained and a better result can be expected Select the low frequencies by pressing the lt button and measure the hearing threshold at low tones After finishing the test the hearing threshold is now visible By pressing the lt or gt button you can now go from one test result to the other The test level at which the patient signaled hearing each tone is indicated on the display 6 3 Switching ears Switch ears by pressing the L R button 15 in order to present the tones and store results for the appropriate ear RIGHT or LEFT will also be highlighted on the test screen 6 4 Evaluation of the test results The test results can now be printed by pressing the PRINT 2 button from the main test screen Results from the current session only or from all stored sessions may be printed Confirm your choice by pressing the appropriate button NOTE Most states define a normal hearing level for a pure tone screening as 20 dBy However it is recommended that you check with your state or the American Speech Language Hearing Association ASHA for specific guidelines Press the ERASE button 1 from the main test screen in order to delete the results on the display for the current session or all of the data in the database Confirm your d
22. f three responses at a particular level After this threshold is established it is displayed on the test screen The level and frequency of the response is marked by an O for the right ear or X for the left ear in the audiogram view Figure 1C The response in the table view is stored as a numerical value in the row for the appropriate ear The test will continue until all frequencies have been tested for both the right and the left ear When the test is finished the following message will play through the headphones to the patient Please remove your earphones and place the earphones and the hand button on your chair Press SAVE button 13 to save the current test results in the database Data Saved will appear on the screen to confirm that the session has been saved Operating Instructions Detective Audiometer 0 225 0 5 1 2 c3 4 6 8kKHZ Or nm 10 T s A LEFT UD Ree Sis ais D E EE Pe au E aa ae See ef B io ue 5 a ce var RESPONSE B ge ee fea ree eee TIMI 70 80 Figure 1A Audiogram at 20 dB LEFT STIMULUS 1 kHz RESPONSE 20 dB FREQ Hz 250 500 1k 2k 3k 4k 6k 8k LEFT RIGHT cmt ene eae Figure 1B Table at 20 dB O25 47 OS i 2 BS x45 6 28IKHZ es ae TOR Ta ED EET 3 s x Aw wo s xd Bo o 3 x 035 o c oe RESPONSE 60 STIMULUS 70 80 Figure 1C IM MAICO Operating Instructions Detective Audiometer 5
23. face 1 GND 2 RX 3 TX RS 232 C Universal serial interface USB 1 1 Monitor phone Sleeve Mass Tip Output ZA 10 S UA 35 mVeff Patient response switch Sleeve Mass Tip Input RI 500 S Loudspeaker optional Sleeve Mass Tip Output ZA 8 S UA 3 5 Veff Headset right red Sleeve Mass Tip Output ZA 8 S UA 3 5 Veff Headset left blue Sleeve Mass Tip Output ZA 8 S UA 3 5 Veff 18 MAICO Calibration values AC Headphone IN Operating Instructions Detective Audiometer Force 4 5 N Reference equivalent threshold according to Frequency Hz ANSI 53 6 250 25 5 500 11 5 1000 7 2000 9 3000 10 4000 9 5 6000 15 5 8000 13 Speech 19 5 Standard accessories Part 710 2 Part 1025 2067 Part 1149 1044 Part 1149 1046 Part 1025 408 Part 1025 2068 Part 5529 Part 4687 Part 2169 Part 1162 0602 Consumables Part 5529 Detective Audiometer Detective Audiometer AC power cord Printer Printer AC power supply Printer AC power supply cord Printer cable Printer paper TDH 39 headset Patient response switch Operating manual with warranty card Calibration certificate Printer paper Please contact Maico Diagnostics at 888 941 4201 to reorder 19 IM MAICO Operating Instructions Detective Audiometer 10 Troubleshooting If your instrument is no longer working properly please check the following points Lamps
24. lows Voice Prompt Language Audiometry Submenu Automatic Audiometry Voice Prompt Language Display Language The instructions and voice prompts of the Device Information Detective PC or Printer Audiometer will be played back with the selected Display Contrast language Two languages are Reset to Default programmed in the Detective Audiometer The choices are English or Spanish A Y Change Item Enter Select item Menu Return Audiometry Submenu Figure 4 The following settings are possible Figure 3 Display Audiogram Table Audiogram The audiogram is displayed either as a diagram or table for both the manual and automatic tests Audiometry Submenu Display Audiogram Go to next frequency after saving ON OFF If this function is switched off the next frequency has to be selected by pressing lt or gt Go to next freq after saving in the manual mode Level after frequency change Level after frequency change Save Data with Remaining The test level remains if the frequency has been changed Advanced Settings Return to minimal level The next frequency A Y Change Item will be measured at a start level of OdB Enter Select Item Menu Return Decrease by 30dB The test level of the next frequency is decreased by 30dB of the stored threshold of the last frequency tested Figure 4 Return to 30dB The test level of the next frequency will start at 30dB 14 IN Operating Instructions Detective Audiomete
25. n LED does not illuminate Printer status is OFF Turn the printer ON by pressing the Paper Feed button LED is always ON Printer status is ON LED flashes 1 time during cycle Printer status is Stand By Turn the printer ON by pressing the ON OFF Line Button B LED flashes 2 time during cycle Lever in the printer is UP Press the lever down LED flashes 3 time during cycle End of paper Put new paper in the printer LED flashes 4 time during Over Under Voltage or Check your Power supply if cycle Temperature it corresponds to the value of 5V to 8 5 V Cool down the printer 14 8 2 Problem solving Problem Cause Action LED does not illuminate Printer status is OFF Turn the printer ON by pressing the Paper Feed button Power supply is not connected Check all the connections of your power supply Printer does not print Printer is not connected Serial jacks are interchanged Check all the connections and signs of your power supply No paper in the printer Put paper in the printer Lever is up Put lever down The paper goes through the printer but there is nothing on it The printer is printing on the wrong site of the paper Replace the paper with the thermal side to the printing head of the printer 30 IN Operating Instructions Detective Audiometer M
26. ne as Default turned off by the user These frequencies will be Direction of Level Button displayed for both the manual and automatic tests Pulse Tone as Default ON OFF ON indicates that the test will be conducted with pulsed tones in manual mode AY Change Item Enter Select item Menu Return Direction of level button Cursor button for level increase up down This function sets the direction of the button W decreasing up in level A increasing down in level or vice versa in order to change level in manual mode Figure 6 Attention Saving data with STIMULUS button is only possible if you have set up the function interrupter mode instead of presenter mode setting Additional items on the User Menu screen Figure 3 include Display language The language of the instructions shown on the display can be selected English Spanish German and French are available as operating languages This selection does NOT affect the voice prompt language Device information General information can be found here e g software version serial number and quantity of tests PC or Print Select Print serial or PC data transfer If detective printer is attached Print serial must be selected in this menu Display contrast By pressing the W 19 or A button 21 the display can be adapted to your personal requirements Press the ENTER button 15 to confirm your selection Reset to Default Returns all settings to fac
27. nge the earphone s electrical and operational characteristics and require recalibration of the Detective 4 Cover the audiometer at the end of each day to minimize dust collection 5 Avoid sharply bending or twisting any of the cords Although they are designed to be highly flexible rough treatment may cause damage Broken or defective cords can cause crackling noise and intermittent or weak operation in the headset Headset cords may be replaced without recalibrating the audiometer 17 IN Operating Instructions Detective Audiometer MAICO 9 Technical data and accessories Tone audiometer class 4 ANSI S3 6 Test signal Pure tone Test frequencies 250 500 Hz 750 Hz 1 1 5 2 3 4 6 8 kHz Hearing level adjustable in 5 dB steps Air conduction headset TDH 39 10 dB to 100 dByj Presenter mode Tone will be presented when pressing the STIMULUS button Voice prompt signal source MP3 sound file Electrical safety EN 60601 1 class I Main voltage 100 to 240 V x10 96 50 60 Hz Power consumption 10 VA Warm up time 10 min after power on Environment conditions 4 15 C to 4 35 C 59 F to 495 F operation 5 C to 4 50 C 41 F to 4122 F storage max humidity 9096 storage and operation Dimensions WxDxH 30x 25x6cm 11 8 x 9 8 x 2 4 Weight 1 3 kg 2 86 lbs Connection plugs Connections Specification Main left right main 100 240 V 50 60 Hz middle protection earth Serial inter
28. r MAICO Save Data with Stim Enter Choose if the data will be saved by pressing the ENTER button or the STIMULUS button Automatic Audiometry Figure 5 This menu sets how the Detective Audiometer is performed in Automatic Mode The following settings are possible Automatic Audiometry Mode Screening Threshold T F E Minimal level Screening means that only one level with be Maximal Level tested start level Start Level Threshold means that the 10dB down 5dB up Pause length procedure will be used to establish a threshold Midi Start level etes zd l Conti E Minimal Level this is the lowest level that will be ea m perd tested in the automatic mode Choose from 0 to Voice Prompts 90cB in 5dB steps AY Change Item Enter Select item Menu Return Maximal Level this is the highest level that will be tested in the automatic mode Choose from 0 to 90dB in 5dB steps Figure 5 Start Level Level at which the automatic test will be initiated This level can only be as low as the Minimal Level choose from O to 90dB in 5dB steps Pause length Length between tone presentations in addition to the randomized time variable choose from 1 to 99 seconds Variable Start Level ON OFF ON will start the test level 10dB lower than the previously recorded threshold OFF will always return to the start level indicated in the menu item above at each frequency tested Retest NONE only 1 kHz All Errors 1kHz amp
29. related to hearing disorders The hearing threshold is the lowest sound level a person can hear This threshold is measured in dB decibels As a result of large scaled mass screenings the hearing threshold of young normal hearing people is defined as O dBy Index HL is short for hearing level So a hearing threshold of 0 dB is called normal and means that there is no hearing loss On the other hand a threshold of 70 dBy would indicate poorer hearing since sound is heard only when its intensity is 70 dB higher than normal In the reverse case of a negative value e g 10 dBy the hearing is even better than normal The hearing threshold is measured using pure tones sine wave with frequencies from about 125 Hz up to 8000 Hz with adults and 250 Hz up to 4000 Hz with children These pure tone audiometric tests are rather time consuming and require high concentration and cooperation of the tested person So the tests can be difficult especially with children To find out if there is a hearing disorder it is not necessary to start the examination with a pure tone audiometric test but instead by checking the hearing threshold below a certain limiting level using a screening test If the patient s hearing threshold is below that limit normal hearing is indicated If the hearing threshold exceeds the limit or there are other concerns or indications the patient should be referred for further audiological examination While the screening test is ea
30. room should be at normal room temperature 15 C 59 F to 35 C 95 F and the instrument should be turned on about 10 minutes before the first measurement 3 2 How to set up Setup is accomplished in four easy steps 1 Plug the power cord into the rear panel 2 Plug the power cord into a grounded outlet 3 Connect the red right plug of the headphone into the socket marked R and the blue left plug into the socket marked L on the rear of the device Turn on the Detective with the switch at the rear of the device The right ear is selected Right is highlighted on the display The device is in stand by mode now and a manual or automatic audiometry test may be started 3 3Calibrating the device The instrument and headphones are a set Because the headphones have been calibrated to this particular instrument use of other transducers is not recommended If one of the acoustic transducers has been replaced the instrument must be recalibrated or the measurements will be incorrect IM MAICO Operating Instructions Detective Audiometer 3 4 Display and control panel Erase button Print button Pause LED Pause Stop button Start button Save button LCD screen L R button choose test ear Menu 10 Left cursor 11 Stimulus touch bar 12 Down cursor 13 Right cursor 14 Up cursor 15 Enter 16 New button WOONDUABWN IN Operating Instructions Detective Audiometer MAICO 4 Basics
31. stic GmbH 13 14 Salzufer 10587 Berlin Germany Phone 44030 70 71 46 50 Fax 44030 70 71 46 99 11 3 Shipping instructions for calibration and repair In the event it becomes necessary to return the instrument for calibration or repair please follow these instructions 1 Place the instrument in the original shipping carton using the packaging provided Be sure to include all accessories as they are required for proper calibration 2 Enclose an explanatory letter describing the service you require carefully detailing any operational problems Be sure to include your name phone number the serial number and your full return address for return shipping 3 Ship prepaid to your Maico Special Instrument service center NOTE Warranty service is provided by your authorized Maico Special Instruments Distributor DO NOT ATTEMPT TO REMOVE THE INSTRUMENT CASE YOURSELF THIS SHOULD BE DONE ONLY BY AN AUTHORIZED MAICO SERVICE TECHNICIAN 22 IN Operating Instructions Detective Audiometer MAICO 12 Safety regulations Electrical safety The Detective Audiometer is constructed to comply with protection class of the international standard IEC 601 1 EN 60601 1 The instruments are not intended for operation in areas with an explosion hazard Measuring accuracy To guarantee that the audiometer works properly the instrument has to be checked and calibrated at least once a year The service and calibration must
32. sy to facilitate with the Detective results may still be unreliable if the following factors are in play e disturbing noise in the test room insufficient cooperation by the patient poor power of concentration on the part of the patient the patient did not comprehend the test procedure the measuring instrument is not functioning 4 1 Hearing disorders Hearing disorders entail different effects on children and adults An adult may have sustained a mild hearing loss of 35 dBy without being conscious of the disorder That is because he she has more experience with the redundancy i e information abundance of speech and thus is able to add non heard parts of words or even sentences automatically and unconsciously With children particularly at the preschool age a similarly mild hearing loss can be critical for further speech and language development The capability of realizing the complicated rules of speech and transferring them to his her own development of speech can be highly restricted Reasons for a hearing loss can be e malfunction of the outer or middle ear conductive loss e malfunction of the inner ear sensory loss e malfunction of the neural pathway neural loss IM MAICO Operating Instructions Detective Audiometer Sensory and neural losses can be caused by many different factors including congenital disorders ototoxic medications disease or infection and exposure to excessively loud sounds With children
33. t is recommended that you check with your state or the American Speech Language Hearing Association ASHA for specific guidelines To start a new test press the NEW button 16 The Detective will display the automatic assigned patient ID number Press enter to confirm this number and the main test screen will be displayed with a blank audiogram or table ready to start a new test If you would like to enter a customized ID number press the NEW button 16 then enter an ID number up to 9 digits using the numbers displayed next to the keys on the front panel of the instrument Figure 1 Results for a current session or all stored sessions may be printed by pressing the PRINT 2 key from the main test screen Confirm your choice by pressing the appropriate button Detective printer must be attached and set up in the user menu Press the ERASE button 1 in order to delete the results on the display and to start a test for a new patient Just the current session may be deleted or the entire database includes all strored patients may be deleted Confirm your choice by pressing the appropriate button ERASE 1 to delete session PRINT 2 to delete the database 10 IN Operating Instructions Detective Audiometer MAICO 5 5 Changing the voice prompt language To change the language of the instructions the child hears during the test press MENU 9 Move the arrow key 19 down until Voice Prompt Language is highlighted an
34. to customize the set up Testing will begin in the right ear at 1000HZ Right will be highlighted and the cursor will indicate the level and frequency where the test will start Figure 1 Press the START button 5 in order to start the automatic audiometry test The child will hear the following initial set of instructions in their headphones You will hear different tones through your headphones As soon as you hear a tone even if it is very soft quickly press and release the hand button IM MAICO Following these instructions the test will immediately begin by presenting the first tone The tone is represented as cross hairs in the audiogram view Figure 1A The horizontal axis indicates the frequencies 250 Hz 8 kHz and the vertical axis indicates the levels at which the test tone is given Frequency of the tone being presented in the table view is indicated by the column in which the cursor is located The level of the signal is displayed as a numerical value under the current test frequency Figure 1B If the child does not respond by pressing the hand button the tone will go up 5dB This will continue until the child responds to the tone When the child presses the hand button in response to the tone the level will decrease by 10dB and then ascend in 5dB steps until the child responds again This pattern of increasing by 5dB and decreasing by 10dB will continue until the child has two out o
35. tory default settings 16 IN Operating Instructions Detective Audiometer MAICO 8 Care and maintenance of the instrument Disconnect the main cables before cleaning To clean the instrument headphones and accessories use a soft cloth dampened with a little warm soapy water no alcohol based cleaner should be used The ear cushions of the headphones can be detached for cleaning To remove the ear cushion pull it gently from the earphone To assemble the cleaned or changed cushion press it on the earphone and make sure that it sits properly The sound outlet hole must be exactly in the middle of earphone During cleaning make sure that no liquids run into the switches headphone capsules or loudspeaker openings To maximize the service life of your audiometer and accessory equipment we suggest the following 1 Turn off the instrument overnight 2 Wipe the headset cords ear cushions and casing occasionally with a cloth dampened not dripping wet with warm water Dry with a soft cloth 3 Leave the accessories such as the headset power supply module and operator earphone permanently connected to the audiometer to minimize strain on the connections It is not necessary to disconnect accessories that are not in use while performing other tests Should it be necessary to disconnect cords always grasp the barrel of the plug never pull the cords Never drop or snap the headphones together Mechanical shock may cha
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