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Equinox Operation Manual

1. If this apparatus is connected to one or more other devices with medical CE marking to make up a system or pack the CE marking is only valid also for the combination if the supplier has issued a declaration stating that the requirements in the Medical Device Directive article 12 are fulfilled for the combination Equinox The Equinox Hardware Platform Page 2 2 Note Within the European Union it is illegal to dispose electric and electronic waste as unsorted municipal waste Electric and electronic waste may contain hazardous substances and therefore has to be collected separately Such products will be marked with the crossed out wheeled bin shown below The cooperation of the user is important in order to ensure a high level of reuse and recycling of electric and electronic waste Failing to recycle such waste products in an appropriate way may endanger the environment and consequently the health of human beings Equinox The Equinox Hardware Platform Page 2 3 2 2 General Maintenance Procedures The performance and safety of the instrument will be kept if the following recommendations for care and maintenance are observed 1 It is recommended to let the instrument go through at least one annual overhaul to ensure that the acoustical electrical and mechanical properties are correct This should be made by an authorised workshop in order to guaranty proper service and repair 2 Before the connection to the mains network be sure that
2. 3 Under the same conditions it is checked that the sound pressure level on the axis from the loudspeaker through the reference point is within 1 dB from the theoretic values given in the inverse distance law see table below at positions of 10 cm in front and behind the reference point This is done at all test frequencies Inverse distance law P e is the sound pressure level in the reference point Distance from Sound pressure level in reference Sound pressure level in reference loudspeaker to point 10 cm point 10 cm reference point Distance Sound pressure level Distance Sound pressure level dB a dB 0 9 Prt 09 Pret 08 Before the above mentioned test is performed using the present test signals warble tones the minimum and maximum values using pure tones can be measured These values will be very explicit when pure tones are used and must of course be avoided when the reference point is chosen INTERACOUSTICS guide for free field audiometry page 8 Example on calculations for control of sound field using a distance from the loudspeaker to the reference point on 1 5 m Sound pressure level measured in the reference point P e 68 5 dB SPL Limits for sound pressure level 15 cm above below to the right and to the left of the reference point 68 5 2 dB 66 5 to 70 5 dB SPL Limits for sound pressure levels 10 cm in front of the reference point 68 5 0 6 1 dB 68 1 to 70 1 dB Limits for sou
3. Settings representation W Offset BC symbols on screen i Offset BC symbols on printer Audiometer keyboard Swap hi and Ch2 9 Equinox Visible Speech VSP440 Software Cancel Page 4 26 1 Ch2 opposite ch1 output When this is on the output of Ch2 automatically will be opposite to Ch1 When Right is selected in Ch1 then Ch2 automatically selects Left etc 2 Default Intensity when changing output When output is changed the attenuator will set to this level 3 Ch2 start intensity When ch2 is changed from Off to an output the attenuator will be set to this value 4 Allow monitor on live voice speech When monitor is selected then you can choose here whether the live voice speech shall be routed to the monitor loudspeaker or not 5 Default Talk Back level You can set the Talk Back start up level here 6 Default Talk Forward level You can set the Talk Forward start up level here 7 Allow Talk Forward in FF Here you can choose whether the Talk Forward signal shall be routed to the FF loudspeakers or not 8 Representation of BC symbols on printouts or on the screen Activating these functions will change the actual layout slightly in order to have an easier overview 9 Swap Channel 1 and Channel 2 on optional keyboard Even if no data have been recorded it s possible to print out empty audiograms or other frames Advanced Setup Audiometer keyboard Ch2 Function keys Tone Function keys Speech C
4. Turn on the Equinox and connect the USB cable at the back of the Equinox labelled USBIPC and plug the other end of the USB cable into a USB slot on your PC and you will see the add new hardware wizard note it may take up to 2 minutes before this screen comes up Add New Hardware Wizard This wizard searches for new drivers for Equinox A device driver lea software program that makes a hardware device work Cancel Press Next Equinox System Installation Page 3 12 Add New Hardware Wizard What do pou want Windows to do POOP C Terr r ett r AAN i Search for the best driver for your device Recommended AAA C Display a list of all the drivers in a specific location 20 you can select the driver you want z Back Cancel Press Next Add New Hardware Wizard Windows will search for new drivers in its diver database on pour hard dive and in any of the following selected locations Click Next to start the search Floppy disk drives CO ROM drive Microsoft Windows Update W Specify a location E Driver Back Next gt Lancel Click in Specify a location and press Browse and choose your CD ROM drive letter in this case E and mark the folder Driver then press OK and your screen will look like this Note do not click in CD ROM drive as the driver then cannot be found by Windows Press Next Equinox System Installation Page
5. selection Tone Audiogram 47 Tone Tone W arble tone E Wiarble tone HE Input ch1 selection Speech 4udiagram 48 fic blic Mice COT OR Cancel 46 Output ch1 selection Setup of output channel 1 Select an item and double click on the right mouse button or use the gt gt to transfer this item to the box on the right hand side When the Output key on the keyboard is activated these items will be toggled through 47 Input ch1 selection Tone Audiogram Setup of input channel 1 Tone see above 48 Input ch1 selection Speech Audiogram Setup of input channel 1 Speech see above Equinox Visible Speech VSP440 Software Page 4 34 Audiometer keyboard Ch2 Here you can configure the external audiometer keyboard connected to the Affinity Box Advanced Setup E Common Tone Speech Additional tests Audiometer keyboard Ch Audiometer keyboard Che Function keys Tone Function keys Speech Output ch selection 49 Right Left Lett Right Insert Mask Insert Mask FF Ot FF2 Input che selection Tone Sudiograrm 50 Med NE Ea wH OF Cancel 49 Output ch2 selection Set up of output Channel 2 Select an item and double click on the right mouse button or use the gt gt to transfer this item to the box on the right hand side When the Output key on the keyboard is activated these items will be toggled through 50 Input ch2 selection Tone Audiogram S
6. 40 USB PC Socket for USB cable or PC 41 USB Socket for USB cable NOAH link 42 Ref Mic Ext Connection of external reference microphone 43 Coupler Ext Connection of external coupler 44 Mains Socket for mains cable 45 Power Turns power on off External connections For further information see service manual 2 7 Explanation to symbols which can be found on the instrument On Power connection to the mains Off Power disconnection from the mains Alternating current Fuse Ground Dangerous voltage See explanation in manual Type BF equipment Equinox The Equinox Hardware Platform Page 2 7 2 8 Technical Specifications Equinox Hardware Specifications Equinox Hardware CE mark PC requirements Supported Systems Available modules NOAH Computer Communication Construction Power Fuses Consumption Dimensions Weight The CE mark indicates that Interacoustics A S meets the requirements of Annex II of the Medical Device Directive 93 42 EEC Approval of the quality system is made by TUV identification no 0543 800 MHz Pentium 3 class CPU or better with at least 128 MB ram CD ROM drive USB connector Display minimum 800x600 and at least 500 MB free disk space System RAM 128 MB Windows 98 SE 2000 SP2 or later XP SP1 or later and compatible AC440 3 0 Built in USB1 1 computer interface Painted metal cabinet bottom and moulded plastic top AC 50 60 Hz 100 24
7. Channel 1 Output upper left hand corner 11 If masking is required select masking ear and stimulus in Channel 2 Output Input 12 Presenta tone with mouse or Ctrl buttons touch switches if dedicated keyboard is used 13 Change stimulus level with arrow keys up down Masking levels controlled by PgUp PgDn 14 Store Heard by s or by left clicking mouse in stimulus field Store Not heard by n or by right clicking in stimuli field 15 Manual frequency selection by arrow keys lt and gt 16 Save and exit by Save and Exit icon Note If the dedicated Audiometer keyboard is used its functions will be dependent on the programming that the selected user has entered as his default Equinox Visible Speech VSP440 Software Page 4 2 4 1 2 Speech Audiometry AC BC e sal me IS O OO O CE O O A E A E E O SS O O IO A O ae NS 10 11 12 13 14 15 16 AC BC AC BC I ae a a ee sns 2 Right Masking E Left Masking i BC Recognition AC Open NOAH Enter patient data see NOAH manual or Double click on any client Place the headphones on the patient s head Instruct the patient to repeat the words presented Open Module Selection E3 Select the Measurement tab Messurement Select the Affinity AC440 Icon Select Speech Audiogram EE or suitable setup Select test ear and transducer in Channel 1 Output upper left h
8. gt ea r a Ez Z a 10 0 10 20 30 40 50 60 70 30 90 100 110 120 dB SPL a oje s a 4 o jel Stimuli Scoring Stimuli Inc A Drop Down Menus See later in this chapter for details of the individual drop down options B The tool bar of NOAH It may have a slightly different appearance in your system as it can be modified by the user lt is described in the Noah Help file C Context sensitive HELP Drag it with the mouse and click on buttons etc that you need information about This function may or may not be active in your system D Selected Test Protocol to be used for this session It is possible to select one of the pre programmed Setups by activating the arrow on the right side E Temporary Setup Temporary changes to test protocols Changes will be valid for this session only The name of the Setup will be followed by a mns2 When a new setup is selected the will disappear and the normal setup will be active again F Talk Forward When this button is active it is possible to talk to the patient through the Talk Forward microphone It will also be possible to adjust the sound level of the signal G Extended Range 20dB When the dB level in the headset is 20 dB below the max level it is possible to activate this button It will make it possible to reach the max intensity level H Tone With this buttons it is possible to select Tone audiogram I Speech With this button it is possible to
9. mimicking a conductive hearing loss and performing the Weber test on yourself A patient with a sensory neural hearing loss would hear the sound louder in the normal ear because the affected ear is less effective at picking up sound even if is transmitted directly by conduction into the cochlea A E EA Stimuli Frequency Dec Stimuli Inc Right Center Equinox Visible Speech VSP440 Software Page 4 23 MLD The MLD test is another pre defined test included with a dedicated screen and setup menu The MLD test is an optional function to the AC440 module and requires a separate license to be activated from the menu of the application The term MLD corresponds to Masking Level Difference and refers to the improvement in intelligibility effective signal to noise under noise conditions when a tone or speech is presented out of phase rather than in phase The patient is presented for both pure tone and noise concurrently while conducting the test In the MLD test a Start Stop button has been added to activate deactivate the stimulus Equinox Dec Stimuli Inc Frequency Dec Stimuli Inc 4 to 0 0 0 D 0 3 50 60 70 80 90 100 110 E 120 Tr so sx A Visible Speech VSP440 Software y N O 5 a g Lm 10 a 110 120 1 0 0 0 o 40 sol sol ii al co 10 110 a 0 Sa N
10. thus eliminating the use of pure tones as test signals 2 Step by step procedure for set up and calibration of equipment for free field audiometry 1 Ze Examine and control the ambient noise in the test room as described in section 3 2 Consider the positioning of the loudspeakers in order to make angels height and distances in agreement with fig 1 Install and connect the equipment Mark the reference point using a weight hanging down in a string from the ceiling Check the sound field in and around the reference point as described in section 3 4 If necessary rearrange the position of the reference point and or the loudspeakers together with eventual furniture equipment in the room Calibrate the audiometer at the relevant test frequencies according to section 5 1 Calibrate the audiometer at speech audiometry according to section 5 3 Make records for calibration and adjustment of the equipment Calibration and check is performed when the equipment is installed often e g once a month in the first period of use until the performance of the equipment is known if equipment furniture is added or moved around in the room with an interval of 3 6 month INTERACOUSTICS guide for free field audiometry page 4 45 45 Reference point gt 06m gt 06m gt 06m E o o OQ eference point gt 12m Fig 1 Free field arrangement according to ISO 8253 3 speech seen fr
11. 3 13 Add New Hardware Wizard Windows driver file search for the device WDH USB driwer Windows ie now ready to install the best driver for this device Click Back to select a different driver or click Mest ha continue Location of driver d EADAWEAMAUSB INF Cancel Press Next Add New Hardware Wizard ws WOH USB driver a Windows has finished installing the software that your new hardware device requires Cancel Press Finish Equinox system Installation Page 3 14 3 4 How to install a shortcut in the NOAH toolbar for direct access to the Equinox software If you are using HIMSA S Noah 3 Office System and you want a button shortcut for the installed module please follow these steps Start NOAH3 go to the menu item Tools gt Module buttons Select one of the two available buttons and select the Equinox software name in the drop down list Press OK and your module will be launched when the appropriate button gets pushed 3 5 How to install a shortcut for launching without NOAH If you do not have NOAH on your computer you can make a shortcut for direct launching of the AC440 software as a stand alone module You can find the exe file for this purpose on C ProgramFiles la Equinox laAUD However you will not be able to save your recordings when using this way of working 3 6 Working with OtoAccess If you want to launch the AC440 software from OtoAccess this is a
12. 51 4 10 Optional Paris AC440 SOMWaSusniicstani indica ascios 4 51 Interacoustics A S 08 2005 71013 Interacoustics A S 09 2005 71013 Interacoustics A S 11 2005 80702201 Interacoustics A S 11 2006 80702202 1 Introduction This manual describes the functions of the AC440 software for the Thor Platform This platform is built into a cabinet called Equinox The manual is divided into 5 sections 1 Introduction 2 The Thor Hardware Platform 3 System Installation to get a new system ready for use 4 The AC440 audiometry software including e A quick instruction to quickly get going on systems already installed e Use provides the procedures and options for traditional use e Technical Information 5 Technical notes Please note that this manual does not include basic information on e g how to evaluate the tone or speech audiogram 1 1 Intended use of the AC440 software and the Equinox AC440 Audiometry Software The audiometry software AC440 for the Equinox is a fully NOAH compatible air bone speech audiometer that can be operated either from a PC keyboard or a dedicated audiometer keyboard The AC440 is a device for diagnosing a hearing loss Output and specificity of this type of device are based on the test characteristics defined by the user and may vary depending on environmental and operating conditions The diagnosing of hearing loss using this kind of audiometer depends on the interaction with t
13. Chi Wave speech settings Speech CD name Link stimulus type to 5DSx curve 45 42 Multi syllabic number gt 3051 s Multi syllabic word a settings 43 sentence lt Single syllabic number Yen Single syllabic word Continue after answer 44 SDS 2 A e alt 5 seconds for answer 505 3 _ _ Pe Ea E E Ea EA pan OR Cancel 42 Chosen CD s name 43 Settings for that CD Index if material consists of Numbers Words or sentences As well as if material is single syllabic or multi syllabic Default Speech Settings EJ Numbers C Single syllabic Words buli syllabic C Sentences Cancel Equinox Visible Speech VSP440 Software Page 4 32 44 Presentation mode Manual mode will allow for full manual mode and the speech will not move on Continue after answer will only allow for the speech to continue after answer Wait seconds before next word is presented 45 Various lists can be addressed for different SDS scores SDS1 SDS2 amp SDS3 Equinox Visible Speech VSP440 Software Page 4 33 Audiometer keyboard Ch1 Here you can configure the external audiometer keyboard connected to the Affinity Box Advanced Setup Ed Audometer keyboard Che Funcion keys Tone Function keys Speech Common Tone Speech Additional tests Audiometer keyboard Ch Output ch1 selection 46 Right Right Left Left Bone Aight Bone Right Bone Left Bone Left Input ch
14. D ry Denman 2 BD B a Y My Computer i in Local Di OC HITHO 1 08 HITIAO 1 00 Hoida HITHO 10d HIT460 1 00 z Lira Lemguege LA Lemqusge Language Sh area IE Erie a D Language Packages 5 07940 1 08 Language Package 1 09 French E tirado 1 08 Laraga Pegs 1 Ce Germ n E TO 1 06 Language Padiaga 1 04 Dalan E raraso 1 05 Larquege Package 1 00 Japanese 5 980 1 08 Larus Pcie 1 0 gt Spare Co H HE Common on Taid OF A on aney O62 E Se lor Dare il g HS idini on Tar d0 e E SF Database on anto 11 Se SE beiaren on Tare ui 0 T HE Prodi on Tanit Rs de Se Verde on Tart re EF Corba Paa E a Mcbde Demos Equinox System Installation Page 3 4 Choose the folder containing the language you prefer HIT440 1 08 Language Package 1 08 French Acta Fle Edk View Favortes Tools Hep Que Power E ra OH Addess CD DilLenqueg Podkages 17440 1 06 Language Package 1 08 French v gj Folders X Files Currently on the CD G besitoo Fram 3 2 9 Pi en 4 My Computer f HET440 InstMaw Setup Setup E e Local Ok C Language a Y 111440 D Pakay Driver French O Language Packages E 17440 1 00 Language Package 1 00 Franch CD HIT440 1 08 Language Package 1 08 German E HIT440 1 08 Language Package 1 06 allan C 101440 1 08 Language Package 1 00 Japanese HIT440 1 08 Language Package 1 08 Spanish Ca SS Common on Tarkia F SS users on Were 6 SS Sag on Tati 0h SS Adi
15. an IEC126 coupler or an IEC711 simulator Visible Speech VSP440 Software Page 4 49 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 Correction values i TDH39 with a o EAR Tone MX41 AR or PN 51 PN 51 cushion cushion using IEC 303 coupler z dB dB hz dB Tone Presentation Patient signal Patient communication Monitor Storing capability Compatible Software Manual or Reverse Single or multiple pulses One or two optional hand held push button Talk Forward and Talk Back Channel 1 and Channel 2 Tone audiogram dB HL MCL UCL Speech Audiogram SDS1 SDS2 SDS3 MCL UCL Aided Unaided NOAH 3 laBasell Equinox Visible Speech VSP440 Software Page 4 50 4 9 Equinox Included Parts AC440 Software Affinity AC440 Software on CD TDH39 Audiometric Headset B71 Bone Conductor APS2 Patient Response Button Standard USB Cable Power Cable 120 or 230V Operation and Multilingual CE Manual Optional Parts AC440 Software Audiometer Keyboard with live voice mic EarTone5A Audiometric Headset ACC60 Affinity carrying Case CIR22 Insert Masking Earphones Audiocup Enclosures Peltor Noise Excluding Headset Visible Speech VSP440 Software Page 4 51 Return Report Form 001 Company Address Address SoS Drejervaenget 8 5610 Assens Denmark PORE Phon
16. and HF2 The audiometric scale can be expanded up to 20kHz by enabling the High Frequency function embedded in the AC440 module The High Frequency function is optional to the AC440 module and requires a separate license to be activated from the menu of the application Additionally the module requires a dedicated high frequency transducer in order to be performed The Affinity is setup to enable the calibration of three 3 high frequency transducers KOSS 80 HDA200 and HDA280 dB Right Tone HF HF i dB Right Tone HF HF z 16 125 25 5 1 2 3 4 6 8 1012 516 20 kHz 911 214 18 Equinox Visible Speech VSP440 Software Page 4 12 The High Frequencies ranges have also been added in the User setup for the specification of individual preferences User setup Username NE gt New Delete Start screen C Tone Speech Tone audiometry HL MEL 125 250 500 50 1500 2000 3000 4000 6000 2000 3000 10000 11200 14000 16000 15000 20000 Check all Check all Uncheck all Uncheck all Hide unselected freq w w w w w m e w e w AT AAAA S o xI aL I 4 4 KI Manual placement of speech score Speech C Table f Graph Intensity steps 5 dB Default headset f Headset C Insert W Enable touch switch in locked cursor mode Print Wizard Advanced Cancel Possibility to place the Speech score value with the mouse in the graphical spe
17. bone conductor etc supplied with the instrument are calibrated to this instrument exchange of transducers requires a new calibration Notice Itis recommended that parts which are in direct contact with the patient e g earphone cushions are subjected to standard disinfecting procedure between patients This includes physically cleaning and use of a recognized disinfectant Individual manufacturer s instruction should be followed for use of this disinfecting agent to provide an appropriated level of cleanliness Notice Please note that if connection is made to standard equipment like printers and network special precautions must be taken in order to maintain medical safety Optical isolation unit for USB is available from your supplier Notice No installation precautions are necessary to avoid unwanted sound radiation from the audiometer Notice Connecting this device to other devices in order to make a system may cause the safety specifications to be invalid It is therefore recommended to insert a galvanic separation between the device and the host computer unless the computer is battery operated or supplied by a medical approved power supply Notice Although the instrument fulfils the relevant EMC requirements precautions should be taken to avoid unnecessary exposure to electromagnetic fields e g from mobile phones etc If the device is used adjacent to other equipment it must be observed that no mutual disturbance appears
18. for a hardware device To continue click Hest Cancel Press Next and this screen comes up Found New Hardware Wizard Install Hardware Device Drivers A device driver iz a software program that enables a hardware device to work with eS an operating system This wizard will complete the installation for this device o Equinox A device driver lea software program that makes a hardware device work Windows needs diver files for your new device To locate driver files and complete the Installation click Nest what do pon want the wizard to do Search for a suitable driver for my device recommended Display a list of the known drivers for this device so that can choose a specific driver lt Back Cancel Press Next Equinox System Installation Page 3 6 Found New Hardware Wizard Locate Driver Files Where do you want Windows to search for driver files Search for driver files for the following hardware device 2 Equinox The wizard searches for suitable drivers in its diver database on your computer and in any of the following optional search locations that you specify To start the search click Nest IF you are searching on a floppy disk or CO ROM drive Insert the floppy disk or CO before clicking Nest Optional search locations M CD ROM drives Specify a location Microsoft Windows Update Back Cancel Insert the CD ROM in your PC s CD ROM drive and Press
19. may select between single and continuous pulse presentation T Output Ch 2 Selects Right Left Bone R Bone L FF1 or FF2 as output for Channel 2 U Input Ch 2 Selects Tone or Warble Tone as input for Channel 2 V Presentation Ch 2 Man will present the signal to the patient only when the Stimuli of Channel 2 is activated Rev will cause the signal to be presented continuously only disappearing when the Stimuli of Channel 2 is activated Furthermore you may select presentation in both channels Sim by locking channel 1 and channel 2 together or to have the presentation in the two channels alternating to each other Alt X Choose which headset you will perform the test with TDH39 Headset or Insert phones Y Monitoring of Channel 1 or Channel 2 or both Channels together Z If the client is equipped with a microphone connected to the talk back input you may listen to the patient 1 Select if HL Hearing Level or MCL Most Comfortable Level or UCL Uncomfortable Level is tested 2 dB HL decrease Ch 1 On the dB HL buttons the intensity in Ch1 can be decreased with 1 or 5 dB with a click of the mouse or the arrow down on the computer keyboard Ch1 3 Stimuli Ch 1 When the mouse cursor is above the Stimuli area the tone will be presented 4 dB HL Increase Ch 1 On the dB HL buttons the intensity in Ch1 can be increased with 1 or 5 dB with a click of the mouse or the arrow up on the computer keyboard
20. setting calibration level 60 11 0 71 dB SPL The monaural free field threshold is 3 dB higher than shown in the table By monaural threshold determination in free field the opposite ear canal must be occluded or masked An insert earphone with masking noise will often be the best solution For tests using off axis positioning of the loudspeakers in 45 and 90 appendix 1 gives some recommended values 5 2 Narrow band noise As mentioned in section 4 2 it is not recommended to use narrow band masking noise from the audiometer as test signal It will further be problematic to use a noise signal for determination of monaural thresholds if there is a need for louder masking levels than obtainable by normal occlusion of the ear canal Calibration values for narrow band noise can anyhow be found in ISO 389 7 using the values for diffuse field if special applications requires this 5 3 Speech audiometry ISO 8253 3 recommends a speech level of 65 dB by the test of speech in competing noise Before the equipment is calibrated the frequency characteristic should be measured and eventually equalised For this purpose the national speech CD should be used playing back the recorded track with pink noise together with a 1 3 octave spectrum analyser or a sound level meter with similar facilities INTERACOUSTICS guide for free field audiometry page 12 If such equipment is not available a conventional sound level meter can be used tog
21. the local mains voltage corresponds to the voltage labelled on the instrument Always disconnect the power cord if the instrument is opened or by control replacement of the mains fuses 3 Observe that no damage is present on the insulation of the mains cable or the connectors and that it is not exposed to any kind of mechanical load which could involve damage 4 Consult the Operating Manual for the instrument in question to see how long time it takes from turning on the instrument until it is stabilised and ready to use 5 For maximum electrical safety turn off the power from a mains powered instrument when it is left unused 6 Do not site the instrument next to a heat source of any kind and allow sufficient space around the instrument to ensure proper ventilation 7 To ensure that the reliability of the instrument is kept it is recommended that the operator at short intervals for instance once a day perform a test on a person with known data This person could be the operator him herself 8 A plastic cover can be provided to protect the instrument against the accumulation of dust The cover should only be used when the instrument is left unused with the power turned off 9 Ifthe surface of the instrument or parts of it are contaminated it can be cleaned using a soft cloth moistened with a mild solution of water and dish washing cleaner or similar The use of organic solvents and aromatic oils must be avoided Always disconnect the ma
22. 0 70 30 90 100 110 120 Stimuli Inc Off MECO Channel 2 125 25 5 1 2 3 4 6 8 kHz 125 25 5 1 2 3 4 6 8 kHz lient Name Affinity Affinity Session Date Today s Date 29 03 2006 User ID ABC A Drop Down Menus See later in this chapter for details of the individual drop down options B The tool bar of NOAH It may have a slightly different appearance in your system as it can be modified by the user It is described in the Noah Help file C Context sensitive HELP Drag it with the mouse and click on buttons etc that you need information about This function may or may not be active in your system D Selected Test Protocol to be used for this session It is possible to select one of the pre programmed Setups by activating the arrow on the right side E Temporary Setup Temporary changes to test protocols Changes will be valid for this session only The name of the Setup will be followed by a mns2 When a new setup is selected the will disappear and the normal setup will be active again F Talk Forward When this button is active it is possible to talk to the patient through the Talk Forward microphone It will also be possible to adjust the sound level of the signal G Extended Range 20 dB When dB level in the headset is 20 dB below the max level it is possible to activate this button It will make it possible to reach the max intensity level H Syncron Activating this button will Lock t
23. 0 J a Password settings New Password Confirm Password A l Set new password 5 Cancel 1 Select if the IEC or ANSI standard shall be active 2 Select if the Equivalent filter for IEC or ANSI speech standard shall be active or not NOTE Changing this setting will allow the Audiometer to present 120dB sound level which can be harmful to patients clients The password protected settings allow a change of the password 3 Type new password 4 Confirm new password 5 Click Set new password Equinox Visible Speech VSP440 Software Page 4 40 Temporary Setup ES File Print Edit Setup View Window ABRE e General Setup k Tone Temporary setup It is possible to make temporary changes to selected test protocol Just select the Temporary Setup to make a temporary Test Protocol Designer appear in which you can make the desired changes Temporary setup a 5 Tone audiometry Frequency list A Y HL MEL 125 250 FUL 50 1500 000 3000 4000 4000 6000 5000 Print Wizard i S000 e000 Check all Check all Uncheck all Uncheck all i Hide unselected freq CI E 125 Intensity steps 250 5 dE KOD 250 1500 D00 3000 W Enable touch switch in locked cursor mode P Default headset ie Headset Ireert C K lt 1 lt 1 lt 1 4 4 4 4 4 4 K lt 1 lt 1 lt 1 41 el el el lt l 11 Advanced F Cancel A Frequency List Selecting des
24. 0V 5 x 20 mm 2 AT 75 W LxWxH 37x43 5x7 7 cm 14 5x17x3 inches 5 1 kg 11 3 lbs 2 9 FAQ Equinox Hardware My standard USB cable does not fit the USB connector in the Equinox There are two USB connectors in the Equinox One is labelled USB which is for e g Blue Tooth transmitter for NOAH Link The other USB connector labelled USB PC is the one you should use for connecting to your PC Equinox The Equinox Hardware Platform Page 2 8 Equinox System Installation Page 2 1 3 System Installation 3 1 To know before you start installation Do not connect Equinox and the computer before the software has been installed e You need the CD Rom USB cable and the Equinox e Your computer must have NOAH3 or a NOAH3 compatible Office System installed prior to the Equinox and AC440 installation See item 3 1 2 for a complete list of supported NOAH3 Office systems e If you are using AuditBase System 4 you must ensure to launch this office system prior to this installation of Equinox and AC440 software e You must have administrative rights to the computer on which you are installing the Equinox and AC440 software 3 2 Supported Noah3 Office Systems NOAHS from HIMSA AuditBase System 4 Mirage Practice Navigator Power Office AkuWin He r O Entendre 2 3 3 Installation on various Windows versions Installation on Windows 2000 see section 3 3 1 Installation on Windows XP see secti
25. Ch1 5 Frequency and Intensity display area On the left side of the green area the dB value for Ch1 is shown and on the right side for Ch2 In the middle of the green area the frequency level is shown 6 dB HL decrease Ch 2 On the dB HL buttons the intensity in Ch2 can be decreased with 1 or 5 dB with a click of the mouse or PgUp on the computer keyboard Ch2 7 Stimuli Ch 2 When the mouse cursor is above the Stimuli area the tone will be presented 8 dB HL Increase Ch 2 On the dB HL buttons the intensity in Ch2 can be increased with 1 or 5 dB with a click of the mouse or PgDn on the computer keyboard Ch2 9 The curves of the recorded tone audiogram will be displayed here 10 Frequency Clicking on the Frequency buttons the frequency will be increased or decreased Equinox Visible Speech VSP440 Software Page 4 5 11 Report page allows to save and print journal entries and setup templates for commonly used words or frases like e g diagnoses Equinox Visible Speech VSP440 Software Page 4 6 4 3 Additional features and tests 4 3 1 MF The button MF Multi Frequency has been added A b H m E F i ae 4 3 2 MHA In the Test menu the submenu MHA Master Hearing Aid has been added 0 NOAH Audiometer AC440 ES File Print Edit MESA Setup View wi Bae A The input can be CD1 CD2 Mic1 and Mic2 B High Pass filters with a slope of 6dB 12dB 18dB and HFE 24 dB can be selected f
26. Introduction The Equinox Hardware Platform System Installation The AC440 Audiometry Operation Manual z E Eo S a t p gt E Valid from Equinox AC440 software version 1 10 80702202 11 2006 Contents Operation Manual for AC440 for the Equinox Y INTO GUI CTO urna is 1 1 1 1 Intended use of the AC440 software and the EQUINOX occccoocccccccncccccnononnnonoconononnnonnononnnnnnnnnnnonnrnnnnnrnnnnannnnnnnncnnncinnnns 1 1 2 TNE TROL Hardware Platform issii ad 2 2 2 1 AO ec 2 2 2 2 General Maintenance Procedures aay siercscccacandeuanioeeawechsanade A A UAE AE 2 4 2 3 Unpacking and INSPEC Macaco 2 5 2 4 REDONINO IMOEN CC HONS iesea alo a a S dolo bancadas 2 5 2 5 Concerning Repair and Maintenance italia dida illa di dida and 2 5 2 6 Connectlon Panel o A A aoe ee es 2 6 2 7 Explanation to symbols which can be found on the instrument ooooccccnocccccnnoccnncnnncnnnonnnnncnnnncnnnnnnnonnnnnnnnnnnonnnennnnnncnss 2 1 2 8 Technical Specifications Equinox Hardware cccccccccssscccsesceceececceuseesaueecsecesseeesaueeeseeessuesessueeesauseessgeessaseessasesses 2 8 2 9 FACEFEQUINOX Hard Ware osea eara e 2 8 3 SysteminstalatloN iii i 3 2 3 1 TO Know before you Star IMS tall ATION scot ii AS 3 2 3 2 Supported Noahs Office SYSICMS ax petite tnsdso oe A e ls 3 2 3 3 Installation on various Windows VersiONS ooccccoccncccccnnonnnnononnnononnnonnononnnnnnnnnnnnnnnnnnnnrnnnnnrnnnnnnnnn
27. Next Found New Hardware Wizard Driver Files Search Results The wizard has finished searching for diver files for your hardware device The wizard found a driver for the following device 2 Equinox Windows found a driver for this device To install the driver Windows found click Next fo d driverausb int Cancel Press Next Equinox System Installation Page 3 7 If the installation of the drivers is made correctly this screen comes up Found New Hardware Wizard Completing the Found New Hardware Wizard O WOH USB driwer Windows has finshed installing the software for this device To close this wizard click Finish Click Finish Equinox System Installation Page 3 8 3 3 2 Windows XP operative system how to install Equinox driver and software You need the CD Rom and USB cable Power up your computer and launch the windows desktop screen do not power up the Equinox or plug in the USB cable Note Before you move on with installation of the AC440 software a NOAH3 compatible office system must be installed Insert the CD ROM and the install shield wizard for Equinox AC440 comes up be aware that you have to have administrator rights to install the software If you do not have this contact your Administrator of the network Press Next and follow the on screen instructions When options are given between different choices please follow the default suggestion to achieve a standar
28. SO SO N7T 15 dB H 4 a tN 0 0 0 o 0 Q 50 60 70 80 90 100 110 120 EE H Sa 7 y Page 4 24 4 6 5 Setup E rie ert edt POMO ves Window Ea E E Setup General Setup k Tone Temporary setup EEK JU Setup ES File Print Edit EN View Window te El E IE General Setup k Tone Temporary setup P _ By activating this menu the program enters the Setup dialog Setup name 1 A Hew Delete Start screen B Tone Speech Tone audiometry HL MEL UCL 125 ch 125 E Table e Graph al 50 FOO 500 Intensity steps 750 750 548 og 1500 1500 000 2000 2000 2000 Default headset Anon 4000 le Headset Bees E 6000 2000 W Enable touch switch in locked cursor mode G S000 10000 Print Wizard H 11200 14000 16000 Speech 6000 gpg 4 4 4 4 4 4 4 6 4 I 4 4 4 4 4 4 4 all 3000 10000 17200 14000 16000 16000 16000 20000 20000 Check all Check all Uncheck all Uncheck all i Hide unselected freq s lt 1 lt 4 41414 4 4 4 4 4 4 a A Setup Activating New will create a pop up Box called Setup where you can type in the name of the new setup Activating Delete will delete the displayed Setup B Start Screen Here you can choose if you want your start screen to be the Tone Audiogra
29. ade and Title are standard Windows items With Client Register Session Browser and AC440 software you can view one of these windows The two first items are related to Noah 4 6 8 Help a BA Be ed wo Affinity AUD Help Noah Help By activating this menu item the Noah Help will pop up AC440 Help By activating this menu item the AC440 About box will pop up In this box is written the Version number of the Hardware Firmware and the AC440 software Furthermore it is here possible to enter a License code that will open for some selected items in the AC440 software These items are Tone Audiogram and Speech Audiogram About HIT440 HIT440 Version 1 05 Copyright C 004 Hardware version Firmware version Licenze Equinox Visible Speech VSP440 Software Page 4 43 4 7 PC Shortcuts 4 7 1 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 Shift F2 Shift F5 Shift F6 Shift F7 Shift F9 Shift F 12 Left Ctrl Space Right Ctrl 0 1 2 3 4 S Enter N R L Alt F P Alt F V Alt F Y Alt F R Equinox General Shortcuts Not implemented Default windows behavior is Help Start Stop test i e MLD SISI Temp setup Talk forward 20dB Extended Range Tone screen Speech screen Print Save and exit Jump to actual session Add historical layer Edit mode Mousetrap test mode Toggle Multi Frequency Toggle Dual and Single Audiogram Toggle High frequency Nor
30. alibration level for 90 250 Hz 60 dB HL calibration level 60 11 2 73 dB INTERACOUSTICS guide for free field audiometry page 14 7 Appendix 2 7 1 Survey of relevant standards for audiometry IEC 225 IEC 303 IEC 318 IEC 373 IEC 645 1 IEC 645 2 IEC 645 4 IEC 1027 ISO 266 ISO 389 1 ISO 389 2 ISO 389 3 ISO 7566 ISO 389 4 ISO 8798 ISO 389 5 ISO 389 7 ISO 226 1 Draft ISO 6189 ISO 8253 1 ISO 8253 2 ISO 8253 3 Octave half octave and third octave band filters intended for the analysis of sounds and vibrations IEC provisional reference coupler for the calibration of earphones used in audiometry An IEC artificial ear of the wide band type for the calibration of earphones used in audiometry Mechanical coupler for measurements on bone vibrators Audiometers Part 1 Pure tone audiometers Audiometers Part 2 Equipment for speech audiometry Audiometers Part 4 Equipment for extended high frequency audiometry Instruments for the measurement of acoustic admittance impedance Acoustics Preferred frequencies for measurements Acoustics standard reference zero for the calibration of pure tone air conduction Acoustics Reference equivalent threshold sound pressure levels for pure tones and insert earphones Acoustics standard reference zero for the calibration of pure tone bone conduction Acoustics Reference levels for narrow band masking noise Acoustics Reference level
31. and corner Select input Mic 1 Mic 2 CD1 CD2 for live voice or recorded speech material Stimulus level controlled by arrow keys up down Masking level controlled by PgUp PgDn Use Correct and Incorrect buttons to store patient s response The audiometer module will calculate the of correct answers Store with yellow Store button Shift between SRT SDS MCL UCL Aided by clicking on the desired function If display is in graph format the SRT value is indicated for 50 correct score Note If the dedicated Audiometer keyboard is used its functions will be dependent on the programming that the selected user has entered as his default Equinox Visible Speech VSP440 Software Page 4 3 4 2 Reading and Using the Tone Audiogram Screen NOAH Audiometer AC440 JE z File Print Edit Test Setup view Window Help A 0 x DOBARAN 5 Q B Spain DI iW 4 B Elm amp u g Actual session y d Channel 1 Output Right y Input Tone y Presentation Man Rev JL JUL e C Channel 2 Output Off Input Presentation Man Rev Sim Akt ce Ve r C Headset Inset X Monitor Y Chi oe Talk Back E Z A f HL 1 MCL UCL 2 Channel 1 F GH ll aa a rdo o 7 ea Inc Frequency Dec e o Dec Stimuli Right Tone 30 50 60 70 30 90 100 110 120 dB 10 0 10 20 30 40 50 6
32. asking 9 HF HLS Socket for High Frequency headphone or Hearing Loss Simulator 10 Talk Back Socket for talk back microphone 11 Mic 1 TF Socket for microphone talk forward 12 Mic 2 Socket for microphone 13 Ass Mon Socket for assistant s headset 14 Monitor Socket for monitor headset 15 Pat Resp L Socket for left patient response button 16 Pat Resp R Socket for right patient response button 17 Inp Aux 1 Socket for input aux 1 18 Inp Aux 2 Socket for input aux 2 19 Batt Sim Socket for battery simulator 20 TB Lsp Socket for test box loudspeaker 21 TB Loop Socket for test box loop 22 FF Loop Socket for free field loop 23 TB Coupler Socket for test box coupler 24 TB Ref Socket for test box reference microphone 26 Ground Equinox The Equinox Hardware Platform Page 2 6 27 Sp 1 4 Power Out Balanced output for 4 or 8 Ohm loudspeakers Pins 1 and 6 Speaker 1 Pins 2 and 7 Speaker 2 Pins 3 and 8 Speaker 3 Pins 4 and 9 Speaker 4 28 FF 1 Line output for external amplifier 29 FF2 Line output for external amplifier 30 Sp 1 Connection of loudspeaker 1 31 Sp 2 Connection of loudspeaker 2 32 Sp 3 Connection of loudspeaker 3 33 Sp 4 Connection of loudspeaker 4 34 CD Input Socket for CD 1 35 CD2 Input Socket for CD 2 36 Insitu L Connection of Insitu Headset Left 3 Insitu R Connection of Insitu Headset Right 38 Keyb Connection of Keyboard 39 DC Socket for power supply for optical USB extension cable
33. ceding Setup settings are made In this case a copy of mns is made Setup name 7 New Delete Esport Import Start screen Tone Speech ee il a aso Equinox Visible Speech VSP440 Software Page 4 14 Export Import The Export and Import buttons have been added A Setup can now be exported as standard or as Read Only Setup name y New Delete Esport Import Start screen Tone Speech Ta l pet laaa Speech Table Edit possibility Make a right click in the where you want a number to be and select Edit A sosa 5053 uN Delete point Delete Ear Delete 5053 Reset score y E 4 Cancel Der Inc A dialog box will pop up Write the number you want to have in the speech table in the preselected field Default values will be placed in the corresponding fields in order to define the value as a point in the speech table That is if a value is written then a dB value will be added BL AL Enter value Equinox Visible Speech VSP440 Software Page 4 15 Independent of this setting the attenuator will always go to 30 dB when switching from or to Tone Speech and different Tests Advanced Setup Audiometer keyboard Che Function ker Common Tone Speech Ad Automatic output selection iM Ch2 opposite chl output Bone Masking Insert masking Intensity Default intensity when changing output lor Ch 2 start intensity 30 Equinox Visible Spe
34. cumentation supplied by Interacoustics A S It is important that the customer agent fills out the RETURN REPORT every time a problem arises and sends it to Interacoustics A S Drejervaenget 8 DK 5610 Assens Denmark This should also be done every time an instrument is returned to Interacoustics A S This of course also applies in the unthinkable worst case of death or serious deterioration to patient or user Equinox The Equinox Hardware Platform Page 2 5 2 6 Connection Panel Equinox 1 4 6 8 10 12 14 16 18 20 22 24 43 2 3 5 7 9 11 13 15 17 19 21 23 42 Bone e Vet ed b gt gt gt Lor ins Lott HF HLS Mic 1 TF Ass Mon Pat Monp l inp Aux 1 Batt Sim TB Loop TA Coupier 100 240V AG i I I i i i 1 1 50 00 He Right ins Right ina Maak Talk Baok Mic 2 Monitor Pat Rosp A inp Aux 2 TB Lap FF Loop TE Aet GON Sree out US vsa cot co2 Ineitu L inaitu A LM PSP OSD ROSADA AE a 27 29 33 35 37 39 41 44 45 28 30 32 34 36 38 40 26 Position Symbol Function 1 FF1 Balanced output for a 4 or 8 Ohm loudspeaker used for free field measurements 2 FF2 Balanced output for a 4 or 8 Ohm loudspeaker used for free field measurements 3 Left Socket for left AC headphone 4 Right socket for right AC headphone 5 Ins Left Socket for left insert earphone 6 Ins Right Socket for right insert earphone 7 Bone Socket for bone conductor 8 Ins Mask Socket for insert earphone for m
35. d with 1 or 5 dB with a click of the mouse or the arrow down PgUp on the computer keyboard 7 Stimuli Ch 1 or Ch 2 When the mouse cursor is above the Stimuli area the tone will be presented 8 dB HL Increase Ch 1 or Ch 2 On the dB HL buttons the intensity in Ch1 Ch 2 can be increased with 1 or 5 dB with a click of the mouse or the arrow up PgDn on the computer keyboard 9 When the word is understood and repeated activate Correct green checkmark 10 When a word in not understood activate Incorrect red cross 11 Pressing the Store button will place a symbol in the speech audiogram field Equinox Visible Speech VSP440 Software Page 4 11 12 The Speech from harddrive If the license for this function is implemented the Wavefile possibility will be displayed Channel 1 Output CH Right Input Rigl Wavetle 12 VU n Ss Z0 On the lower part of the screen a wordlist and additional keys Play Stop and Pause will be displayed o 400 10 a 10 20 30 4 50 60 TO so 30 100 110 120 dB HL Numbers Single syllabic orde F Multi syllabic Ring Spot Farm Hana Geist Zahl Hund Bach Floh l rm C Sentences Durst Teig Prinz Aas Schreck Muss Wolf Braut Kern Stich Groups Guppel ss 1 do Gal lel I Stimuli Z Scoring Store Start Stop Pause Stimuli 13 Start will activate the play function 14 Stop will end the play function 15 Pause will create a temporary break in the testing 16 HF
36. d installation Installation of Language specific files Right click the start button on your desktop Open Explore Search Scan For viruses Properties Open All Users Explore All Users 11 3 Click Explore ra az ir Qu psa fp rats E G Dil Langusge Parksges El Folders a Pibes Currently on the 0D 4 perros id Py Documents a El El a La E si Y i pi pa HD 10S TTA TAO AT 1 00 pte Language Language Language Language Language 2 HIT D Error LL HITHO 1 05 Larus Pata 1 09 French ROT 1 08 Late Pace 1 04 German E HiHi id Lege Padiasge 1 00 alar G HITA 1005 Larios Pacha 1 00 aparece E 4519400 1 08 Lege Pee 1 0 eh Ca ir mt E ddr on ant 10 Mk H SE Databasa en lanky P CL ore on Lent Ur 0 HE Prodiit on Tati E H Voda on lO Ts EF mil Paral Choose the folder containing the language you prefer Equinox System Installation Page 3 9 2 1117440 1 08 Language Package 1 08 French Fle Edt View Favortes Tool Heb Ed Que son fas races Te 05 CI DiLenquegs Podages p 17440 1 06 Language Package 1 08 French v Go Folders x Files Currently on the CD GD besitoo sora e i My Oucumerts HS E Com _ 3 ai HET440 Intha Intel Setup Setup s Langage o HITHO D Paho Oriver French 3 O Language Packages CO 107440 1 00 Language Package 1 00 French O HIT440 1 08 Larzguage Package 1 08 Garman E M0T440 1 08 Language Package 1 08 a
37. ditional tests Audiometer keyboard Ch1 Wave speech settings MLD settings Multi Frequency HLS MHA Channel 1 Default Input N Channel 2 Default Input co2 y m Default Settings Right HLS enabled Left HLS enabled HLS default headset Use audiometric headphones Use HF HLS socket Equinox Visible Speech VSP440 Software Page 4 8 If the hardware is not connected or powered up this message box will pop up If Run in simulation mode is selected everything in the module will work except from the picture of the connected hardware which is replaced by the text Hardware not connected Hardware not connected Please check USB connection and power Run in simulation mode Equinox Visible Speech VSP440 Software Page 4 9 4 4 Reading and Using the Speech Audiogram Screen NOAH Audiometer AC 440 Jeg ES File Print Edit Test Setup View Window Help A E AE l i o i X B a Y DEE 30 B Spain D gt A Channel 1 Channel F Right Mic Actual session MEN chMn N20 off Sub Dutput Right P Input Mic1 Presentation Man Rev SLSUL 7 le E ES R Channel 2 Output Off Ad Input Je Presentation Man Rev TSim Alt F le a gt VU meter VU meter 20 3dB C Headset Insert Input levels Mic1 Mic2 U EIN Recognition UOIJEUILUIISIC 4 5DS1 2 3 MCL UCL Aided Y
38. e 45 63713555 Fax Fax 45 63713522 Contact person Date Following item is reported to be _ returned to INTERACOUSTICS for repair exchange other _ defective as described below with request of assistance _ repaired locally as described below _ showing general problems as described below Item Type Quantity Serial No Supplied by Included parts Description of problem or the performed local repair Returned according to agreement with _ Interacoustics _ Other Date Person _ The above mentioned item is reported to be dangerous to patient or user In order to ensure instant and effective treatment of returned goods it is important that this form is filled in and placed together with the item Please note that the goods must be carefully packed preferably in original packing in order to avoid damage during transport Packing material may be ordered from Interacoustics EC Medical Device Directive rules require immediate report to be sent if the device by malfunction deterioration of performance or characteristics and or by inadequacy in labelling or instructions for use has caused or could have caused death or serious deterioration of health to patient or user GUIDE TO AUDIOMETRY IN FREE FIELD SET UP AND CALIBRATION OF EQUIPMENT Index 1 A a a EA 3 tt General about tree Treld AUTO ME A tcs 4 2 Step by step procedure for set up and calibration of equipment f
39. e signal to be presented continuously only disappearing when the Stimuli of Channel 2 is activated Furthermore you may select presentation in both channels Sim by locking channel 1 and channel 2 together or to have the presentation in the two channels alternating to each other Alt U select with which headset you will perform the test with TDH39 Headset or Insert phones V Select input and level for Microphone 1 or 2 or CD 1 or 2 X Monitoring of Channel 1 or Channel 2 or both Channels together Y If the client is equipped with a microphone connected to the talk back input you may listen to the patient Z Select if SDS no 1 2 3 Speech Discrimination Score MCL Most Comfortable Level or UCL Uncomfortable Level is tested or Aided threshold should be tested and whether it is a Binaural test 1 Frequency and Intensity display area On the left side of the green area the dB value for Ch1 is shown 2 Frequency and Intensity display area On the right side of the green area the dB value for Ch2 is shown 3 Frequency and Intensity display area In the middle of the green area the Speech Score is indicated as well as the word counter 4 VU meter CH 1 and CH 2 Indicate the speech signal of the live voice speech or the recorded speech The level is adjusted by V to reach 0 5 The speech curves will be displayed here 6 dB HL decrease Ch 1 or Ch 2 On the dB HL buttons the intensity in Ch1 Ch 2 can be decrease
40. e to the ambient noise If it can be accepted to have an uncertainty of 5 dB the levels of figure 2 can be raised by 8 dB Most conventional sound level meters are not capable of measuring levels below 5 dB SPL INTERACOUSTICS guide for free field audiometry page 6 al 3 3 Reflections Common rooms with rigid walls ceiling and floor will reflect the sound waves resulting in standing waves figure 3 Test rooms intended for free field audiometry should therefore have the lowest possible reflections NA YAA Pp Vf TN fo YN Fig 3 Standing waves Reflections and standing waves will result in an uneven sound pressure level from the loudspeaker when the distance is changed Depending on the shape of the room and the position of the loudspeaker there will be peaks and valleys on the curve figure 4 Relative Intensity dB Distance from Speaker m Fig 4 Sound pressure level of a 1350 Hz pure tone as function of the distance in a typical test room The dotted line shows the Inverse distance law Traditional pure tone stimulation cannot be used in free field unless the test room is a so called anechoic room Instead of pure tones narrow band noise or frequency modulated FM tones are used also called warble tones INTERACOUSTICS guide for free field audiometry page 7 3 4 Positioning of loudspeakers and control of test room reflections quasi free sound field ISO 8253 3 prescribes the position o
41. ech VSP440 Software Page 4 16 4 5 Reading and Using the Speech Audiogram Table Screen 5 NOAH Audiometer AC440 JE 3 File Print Edit Test Setup View Window Help 8 x OBA SBA2 A fy 0 80 R Spain We A SRE Sur Actual session og Output Channel 1 Channel 2 Right Input Right Wavefile off Wavefile x 4 Si Men Rev LIU Mo gt a le C a 20 0 3dB 20 0 3d8 aiui Channel 2 M S or 400 i Input NS 90 10 r 80 20 Presentation 7 Man Rev im AR e le C de 70 30 z o C Headset Insert ZY Tap 4 g Input levels 3 Mic1 S 50 so 3 Mic2 G des a 3 Monitor F Ch 20 Ch2 Talk Back 5 10 90 Y SDS1 2 3 MCL UCL Aided o gt 100 GCC c e M 40 0 10 20 30 40 50 50 70 80 90 100 110 120 dB SPL y e Numbers Single syllabic 98 22 54 19 86 7 35 47 80 63 Words Multi syllabic C Sentences h Groups ZahlenGruppe X p H a o o qa wo arl p a n o cor Dec Stimuli Inc Play Stop Dec Stimuli Inc Scoring Store Pause 1 Frequency and Intensity display area On the left side of the green area the dB value for Ch1 is shown 2 Frequency and Intensity display area On the right side of the green area the dB value for Ch2 is shown 3 Frequency and Intensity display area In the middle of the green area the Speech Score is indicated as well as the word counter 4 VU meter CH 1 and CH 2 Indicate the speech signal of the live voice speec
42. ech audiogram The cursor can be dragged and dropped in the vertical direction using the mouse Store Speech Score hi 5 r Pd A r r y y f fi is l f Fa i A i PS i H 5 E r d i O f i TE i i 7 H f Fa Pa 2 ag z0 30 40 50 The value in the graphical speech can be stored using the Enter key on the computer keyboard Equinox Visible Speech VSP440 Software Page 4 13 Reset Speech Score Advanced Setup Speech When UCL or HL is selected on the user screen the speech score counter will be set to 0 if this checkmark is activated Advanced Setup Audiometer keyboard Chi Function keys Tone Function k Common Tone Speech Additional tests Audometer Channel 1 Settings Output i Ignore mouse over touch switch CET gt Use German speech score scheme lnprit i i ma SY Reset speech score on intensity change l i Reset speech score on HL to UCL change Presentation em Elen SJL ILI Phonem score scheme o Ss 1 First jari aren The 20 dB button in the Tone audiogram can be activated 50 dB before the max level has been reached It was earlier only 20 dB Change in the Speech Table The SDS1 to 3 are now dedicated buttons Will save you for one click when going from SRT to SDS compared to earlier a SBT Right M T m T Alt Erl ser ae i SDS E SDS2 P EE 5053 E Copy of Setup settings When New is activated a copy of the pre
43. electing some of the 11 audiometric standard frequencies for HL MCL and UCL B Intensity steps Choose between 1 dB or 5 dB in level step size C Default headset Choose insert phones or standard headset D Enable Touch switch in locked cursor mode Select whether the touch switch shall be activated when the mouse is crossing the touch switch area in the Tone audiogram or if the Audiometer shall be in the locked cursor mode E Print Wizard is described in the chapter Print Layout F Advanced For entering of the advanced setup described in chapter Advanced Setup Equinox Visible Speech VSP440 Software Page 4 41 G9 File Print Edit Setup View Window Help ABA Fe amp R Tone PRA HE SB A ee Phannal 1 The asterix following the test protocol name indicates that certain parameters are temporarily changed Temporary changes will be valid for the current session only and the test protocol will return to its original state in the next new session Equinox Visible Speech VSP440 Software Page 4 42 4 6 6 View File Print Edit Setup Window Help FB BB 2 y Tobar jE e Toolbar The Toolbar function enables you to switch the AC440 Toolbar off or on 4 6 7 Window Bre pnt tat soup vien LEE nop fa Te Es an w Status Bar k Tone 0tt lt Citits S Cascade Channel 1 E ET 1 Client Register Right 2 Session Browser Input we 3 Affinity AUD Tone i The Status Bar Casc
44. er amplifier This solution is not estimated to have any significant effect to the results Alternatively two CD players with speech noise could be used where no two is started 5 seconds later than no 1 This procedure will enable the examination of the effect of coherent non coherent situation IEC 645 2 describes two general types of speech audiometers one with free field equivalent earphone output and one without Furthermore there is a distinguish between types with a wide range of facilities and with basic facilities only A or B respectively Speech audiometers with free field equivalent earphone output are different from the conventional ones without equalisation in the fact that they make it possible to make a direct comparison of results INTERACOUSTICS guide for free field audiometry page 11 made with earphone and loudspeaker This kind of speech audiometer is containing E in the type designation e g A E 5 Calibration 5 1 Warble tones As reference for the calibration of warble tone sound pressure levels the values from ISO 389 7 are used binaural on axis Freq 125 250 500 1000 2000 4000 6300 8000 Hz ISO 389 7 values for the main frequencies In the test situation the measuring microphone is placed in the reference point and the audiometer setting is e g 60 dB HL The level of the calibration tor each frequency is calculated as the sum of the setting and the value from the table e g 250 Hz 60 dB
45. esented continuously only disappearing when the Stimuli of Channel 2 is activated Furthermore you may select presentation in both channels Sim by locking channel 1 and channel 2 together or to have the presentation in the two channels alternating to each other Alt 34 Select as default input including level for Microphone 1 or 2 or CD 1 or 2 Equinox Visible Speech VSP440 Software Page 4 30 35 Select if Monitoring of Channel 1 or Channel 2 or both Channels together shall be default 36 Select if Talk back shall be default on or off 37 Select if 1 2 or 3 individual SDS Speech Discrimination Score curves MCL Most Comfortable Level HL UCL Uncomfortable level should be selected as default for speech testing All tests can be made Aided or Unaided and or Binaural by checking the Aided and or Binaural mark 38 Use German speech score scheme Allows for inverted calculation according to German preferences NOTE that the incorrect button is inactive in this mode 39 Reset of Speech score upon intensity change 40 Number of Speech words Select as default the number of presented words which has to been reached before the speech test is stopped 41 Label comment box for SDS curve 1 2 8 3 Equinox Visible Speech VSP440 Software Page 4 31 Additional tests Advanced Setup Audometer keyboard Che Function keys Tone Function keys Speech Corman Tone Speech Additional tests Audiometer keyboard
46. eset speech score on intensity change a V Phonem score scheme resentation First word for familiarization Man Rev PETU a e a Inc Number of speech words 20 Z Scoring Store Channel 2 Dutput NOTE That the if the speech from hard drive license is added the user interface will contain the same screen bar as illustrated in 5 3 In the Advanced Setup is a tap called Multi Frequency Here it is possible to set the frequency resolution to 1 12 or 1 24 octave Furthermore Multi Frequency can be selected active upon start of the application Advanced Setup Audiometer keyboard Che Function keys Tone Fure Common Tone Speech Additional tests Audi Wave speech settings MLD settings Muli Frequency HLS MHA Set Multi Frequencies as default enabled Resolution In the Advanced Setup for MHA the default settings for the 2 channels can be set Advanced Setup Audiometer keyboard Che Function keys Tone Common Tone Function ke Speech Additional tests Audiometer Wave speech settings MLD settings Multi Frequency HLS MHA Channel 1 Input fins 12 ta ore Channel 2 Input o eaae wee Equinox Visible Speech VSP440 Software Page 4 18 4 6 Menu Items 4 6 1 File ES Fie Print Edit Setup view Window Close Module F ah When choosing Close Module the program will close but if you have any unsaved data a dialog box will appea
47. ether with a CD with 1 3 octave noise bands e g Westra digital audiometrie disc nr 1 IEC 645 2 specifies the following demands to the maximum deviation from straight frequency response Frequency range Hz Tolerance dB 125 250 0 10 250 4000 3 4000 6300 5 The specifications are valid using digital material as CD or DAT If analog equipment as tape recorder is used the tolerances of the medium frequency range can be increased with 1 dB while 2 dB for the upper and lower range For the calibration of the level in free field the speech material CD or tape should contain either a band of noise or a warble tone centred at 1 kHz having a bandwidth of at least 1 3 octave The level of this should be the average of the speech material In IEC 645 2 it is recommended that the audiometer is calibrated in either SPL or HL meaning that the sound pressure level from the loudspeaker could be either as shown on the attenuator of the audiometer or 20 dB higher 20 dB corresponds to the standard recognition level for normal hearing persons The SPL calibration is recommended to be used when the audiometer has the ability of producing a free field equivalent output in the earphones while the HL calibration is used when the earphone signal is not equalised Note IEC 645 2 supplies the values of equalisation for 4 different types of earphones DT48 TDH39 TDH49 and DH80 If other types are used only HL calibration wil
48. etup of input channel 2 Tone see above 51 Input ch2 selection Speech Audiogram Setup of input Channel 2 Speech see above Equinox Visible Speech VSP440 Software Page 4 35 Function keys Tone Here you can configure the F keys of the external audiometer keyboard connected to the Affinity Box when the Tone Audiogram is selected Advanced Setup x Common Tone Speech Additionaltests AudiometerkeyboardChi Audiometer keyboard Ch2 Funchon keys Tone Function keys Speech Fi 52 Speech Audiograrn Right Chi Lett Chi BoneR Chi Bonel Chi FFI Chi FF2 Chi Headset Inset Tone Chi Ww atble Chi Man Chi Rev Chi Single Pulse Mul Pulse Monsor Chl ir Ei a koa mh al R Aight Ch2 Left Ch2 Inset Mask Che FFI Che FF2 Che Of Ch2 Tone Ch2 HE Che WIN Che Man Ch2 Rev Ch2 Sim ty F452 Save and Exit e Fa Left Attenuator 53 Talk Forward Aight Sttenuator 54 Talk Back 7 T ma e hd ka Speech Audiograrn Save and Exit e ii Cii sul E T 5555 52 F1 F2 F3 F4 Set up of F keys for Tone Select the item s in the row of possibilities in the left box Use gt gt to transfer the selected item to the right F key box If more items are selected they will be toggled through when the corresponding F key is activated 53 Left Attenuator Set up of Left Attenuator for Tone Select the function to be activa
49. f loudspeaker for speech audiometry as shown in figure 1 The test person is placed on the axis of the loudspeaker producing the test signal Noise are produced by two loudspeakers in a position of 45 to each side of the person under test As an alternative to the position shown in figure 1 the centre loudspeaker could be placed in a corner and the side loudspeakers at the walls which might be suitable in small test rooms The ISO 8253 2 describes further than free field anechoic room or outdoor and diffuse sound field test room with large reflections a quasi free sound field In the quasi free sound field the reflecting areas has only moderate influence on the sound field The conditions below should be followed in order to control and establish a quasi free sound field 1 The loudspeaker is placed in head height of a seated test person The loudspeaker shall point against the reference point which is defined as centre of a straight line between the ear openings of the test person The distance between the loudspeaker and the reference point shall be at least 1m 2 Without the presence of the test person and the chair and with all equipment and other furniture placed as in the test situation it is checked that the sound pressure level from the loudspeaker in a distance of 15 cm to the right and left and 15 cm above and below of the reference point is within 2 dB from the level in the reference point This is done at all test frequencies
50. gn 7 By clicking the Left mouse button a dot will be drawn in the drawing field Clicking the right mouse button the dot will be erased A preview of the symbol will be displayed 8 Restore the design If the symbol is edited and you regret then click Restore 9 Close and exit B Clinic information The Clinic information allows you to type in the information of your Clinic making This information will be printed on the print out if selected in the Printer Wizard C Delete country specific symbol scheme D Clinic Information Type in your clinics name address etc General setup General 4440 Language English United States E Printing i Display gray background on printout F Password protected settings G Ok E Language of module F Display grey background on print reports Save ink Equinox Visible Speech VSP440 Software Page 4 39 G Password protected settings Protected Settings Standard selection Standard IEC 1 Speech settings Speech hltermode settings Nor Linear 2 Phone Horm curves FF Norm curves Mult syllabic Single syllabic Mult syllabic Single syllabic Ea dE a dE a dE a db z 20 fo a a EEE bd Gl i lak bl j mM co on PA an o L cm o PA e o La L o Pa Pay PA ory o bo oo m o o o BESEEGER a la a a a EE Tae BE HE mn l a 20 50 58 70 80 50 10
51. h or the recorded speech The level is adjusted by V to reach 0 5 The values for the SRT Speech Reception Thresholds and SDS Speech Discrimination Score are displayed here for the selected output 6 dB HL decrease Ch 1 or Ch 2 On the dB HL buttons the intensity in Ch1 Ch 2 can be decreased with 1 or 5 dB with a click of the mouse or the arrow down PgUp on the computer keyboard 7 Stimuli Ch 1 or Ch 2 When the mouse cursor is above the Stimuli area the tone will be presented 8 dB HL Increase Ch 1 or Ch 2 On the dB HL buttons the intensity in Ch1 Ch 2 can be increased with 1 or 5 dB with a click of the mouse or the arrow up PgDn on the computer keyboard 9 When the word is understood and repeated activate Correct green checkmark 10 When a word is not understood activate Incorrect red cross 11 Pressing the Store button will place one or more figures in the selected table field Clicking on SRT SDS 1 2 3 will make the fields white depending on the outputs selected Equinox Visible Speech VSP440 Software Page 4 17 12 Phonem Scoring can be choosen in the setup 5 Advanced Setup Audiometer keyboard Ch2 Function keys Tone Function keys Speech Common Tone Speech Additional tests Audiometer keyboard Ch1 S S eee eee ee G Channel 1 Settings Output V Ignore mouse over touch switch Use German speech score scheme Input T Reset speech intensity ch p 0 1 2 3 Mare E
52. he Ch1 attenuator to the Ch2 attenuator The function can also be selected on the dedicated keyboard as an F function I Tone With this buttons it is possible to select Tone audiogram J Speech With this button it is possible to select Speech audiogram Equinox Visible Speech VSP440 Software Page 4 4 K Edit With this button it is possible to go into the Edit mode It s here possible to delete the recorded points and to add new points to the audiogram Further more it s also possible to see the properties for a stored point L Print Printout of the sessions acquired data M Save and Exit With this button it is possible to Save the recorded data in Noah and exit the AC440 module N Direct action to view historical sessions e g for comparison purposes O Brings Session List back to Actual Session P Freezes actual or historical session on the screen for comparison to other sessions Q Output Ch 1 Selects Right Left Bone R Bone L FF1 or FF2 as output for Channel 1 Note If airborne sound is radiated from the bone conductor at frequencies above 2kHz an earplug can be inserted into the test ear R Input Ch 1 Selects Tone or Warble Tone as input for Channel 1 S Presentation Ch 1 Man will present the signal to the patient only when the Stimuli of Channel 1 is activated Rev will cause the signal to be presented continuously only disappearing when the Stimuli of Channel 1 is activated Furthermore you
53. he patient However for patients not responding well possibilities of various tests allow the tester of having at least some evaluative result Thus a normal hearing result should not allow for ignoring other contra indications in this case A full audiologic evaluation should be administered if concerns about hearing sensitivity persist It is intended to be used by hearing aid dispensers and hearing healthcare professionals The Equinox is controlled by a computer through the USB interface Equinox The Equinox Hardware Platform Page 1 1 Equinox The Equinox Hardware Platform Page 1 1 2 The Thor Hardware Platform 2 1 Precautions Warning Interacoustics will not make any guaranty to the functionality of the system if any other software is installed with exception of the Interacoustics measurement AC440 module and a NOAH3 or a NOAH3 compatible Office System Notice The specification for the instrument is valid if the instrument is operated within the following environmental limits Temperature 15 C to 35 C Humidity 30 RH to 90 RH Supply voltage 100 240 Vac Supply frequency 50 60 Hz Notice The instrument must warm up for at least 1 minute before use Notice The reference and the probe microphones can be verified using the procedures described in calibration software Notice Be sure to use only stimulation intensities which will be acceptable for the patient Notice The transducers headphones
54. idth Outputs Transducers Max 6 W into 8 ohms max 10 W into 4 ohms 100 10000 Hz 4 7 KQ Response time approx 350 mS dynamic range 20 3dB 12 5 dB in accordance with ANSI 3 6 Narrow Band Noise or White Noise or Speech Noise 1 3 1 2 octave Weighted random noise with a constant amplitude from 125 to 1000Hz and falling 12 dB octave from 1000Hz to 6000Hz AC Left Right BC Left Right Insert Phone Left Right Insert Masking FF1 and FF2 TDH39 Audiometric headset The audiometer has equivalent free field output for TDH39 headphones EAR Tone 5A Insert phones optional HDA200 Audiometric headset optional B71 Bone conductor calibrated for mastoid placement The bone vibrator output is not available with equivalent free field output RETSPL levels for transducers E A R Tone 5A NB effective B71 Frequency TDH39 HDA200 dB re 20 dB re 20 dB re 20 uPa masking dB re 20 pPa Pa levels UN 750 75 65 20 60 5 485 100 70 65 00 2000 90 30 30 15 6 310 8000 130 160 oo 155 5 Note RETSPL Reference Equivalent Threshold Sound Pressure Level The TDH39 is calibrated on an IEC60318 3 compliant head and ear simulator The HDA200 is calibrated on an IEC60318 1 compliant head and ear simulator The B71 is calibrated on a IEC R373 compliant mastoid simulator using a static force of 5 4N The E A R Tone 5A is calibrated using either
55. ing of Channel 1 or Channel 2 or both Channels together shall be default 17 Activate if Talk back shall be default 18 Select if HL Hearing Level or MCL Most Comfortable Level or UCL Uncomfortable Level or Aided or Binaural shall be set as default 19 Butterfly or Bottom When the Store function is activated butterfly means that the frequency will start at 1000 Hz and increase to max 8000 Hz then jump back to 1000 Hz and decrease to lowest frequency 125 Hz By Bottom the frequency go from 1000 Hz to 8000 Hz and then down to lowest frequency 125 Hz and increase to 1000 Hz 20 Intensity decrease when changing frequency Every time the frequency is changes the level will be decreased by the number in the box Select between Off and from 5 to 40 dB in 5 GB steps 21 Multi Pulse length and Single Pulse length The two pulse times can be set between 250 and 5000 mS in 1 mS steps 22 Representation of Masking values in separate curve on off 23 Representation of Masking values on screen on off 24 Representation of Masking values on print out on off 25 Show audiogram in combined view left right 26 Swap intensity keys on pc keyboard 27 Swap arrows on pc keyboard Equinox Visible Speech VSP440 Software Page 4 29 Speech Advanced Setup ES Audometer keyboard Che Function keys Tone Function keys Speech Common Tone Speech Additional tests Audiometer keyboard Ch Channel 1 Settings Output i Ignore
56. ins conductor during the cleaning process and be careful that no fluid is entering the inside of the instrument or the accessories 10 After each examination of a patient it should be ensured that there is no contamination on the parts in connection with the patient General precautions must be observed in order to avoid that disease from one patient is conducted to others If ear cushions or ear tips are contaminated it is strongly recommended to remove them from the transducer before they are cleaned By frequent cleaning water should be used but by severe contamination it may be necessary to use a disinfectant The use of organic solvents and aromatic oils must be avoided Great care should be exercised by the handling of earphones and other transducers as mechanical shock may cause change of calibration Equinox The Equinox Hardware Platform Page 2 4 2 3 Unpacking and Inspection Check box and contents for damage When the instrument is received please check the shipping box for rough handling and damage If the box is damaged it should be kept until the contents of the shipment have been checked mechanically and electrically If the instrument is faulty please contact your local distributor Keep the shipping material for the carriers inspection and insurance claim Keep carton for future shipment The Equinox comes in its own shipping carton which is specially designed for the Equinox Please keep this carton It will be needed if
57. l be valid Eventually check the specifications for the audiometer to state the actual calibration method and make sure that the audiometric personnel are correctly informed Example on calculation of the calibration level using 1 kHz warble tone from the CD 60dB HL audiometer setting calibration level 60 20 80 dB SPL The competing noise signals from the two loudspeakers are each calibrated to a level of 3 dB lower which gives the correct level speech level in the reference point using two non coherent loudspeakers The calibration could eventually also be checked in the reference point using both loudspeakers simultaneously by measuring the sound pressure level for running speech or the noise signal using an integrating sound level meter L value ISO 8253 3 recommends the general use of C weighting by the measurement of the sound level for speech For lists with single words the sound level can be estimated by the average value of the maximum levels minus 5 dB with the sound level meter in Impulse and C weighting INTERACOUSTICS guide for free field audiometry page 13 6 Appendix 1 6 1 Correction values for 45 and 90 position of loudspeakers Values according to ISO 8253 2 informative Frequency Hz 45 dB 90 dB 125 0 5 1 The table is used by correction of calibration levels at free field tone audiometry when 0 is not used as prescribed in ISO 389 7 Example on calculation of the c
58. llan O HITO 1 00 Language Package 1 00 Japanese O HIT440 1 08 Language Package 1 08 Spanish Ca Y Common on Tarkio F I SE users on Wee G 2S Sag on Tatio Mi e SS Adini on Tatio he a SE Database on lont P D SS Dokument on Lara 10 Q E Procksti on Tort 10 A E Y Vssia on Tart 10 T D D gt Control Paral a O Mti Device IJ Nobis Phone Browser a E My network Places Recycle Bin Click the setup file i HIT440 Language Package French After next restart of your module the choices of languages will appear in the general setup General setup General HIT440 Predefined Battery type Warble adjustment New Remove o E rate 25 0 T Selected Battery Name of Battery Frequency deviation 3 00 Voltage 1100 mV Impedance 0 0 Ohm io g gt aja a E Testbox Ref and coupler Non linear stimulus Internal Normal Number of FFT s for averaging 50 External C BK type al E gt Environmental noise Outside limits Language F Show warning V Show warning WV Display gray background on printout When the installation is done click finish Turn on the Affinity connect the USB cable at the back of the Affinity labelled USB PC and plug the other end of the USB cable into a USB slot on your PC and you will see a small box saying windows found new hardware and after short time up to 2 minutes this screen will come up Equinox System Installation Page 3 10 F
59. lso possible Start the database by clicking on the OtoAccess shortcut or select the OtoAccess from the Start menu To launch the instrument software double click on the relevant instrument software icon in the client tab Tripas Hokie City BEH AA META Mer York MAA ADN Me reek Bi Wienia AA Wahne i Ce Gpe diih BBE AT lalo OO e gets Mie DARIA e od ee Oe For further instructions about working with the database please see the operation manual for OtoAccess 3 License When you receive an Equinox it already contains the license including the software you have ordered Equinox System Installation Page 3 15 4 The AC440 Audiometry Software Notice When using free field please see the instructions in the last chapter of this manual Guide to audiometry in free field set up and calibration of equipment 4 1 Use of the AC440 software Quick Instruction 4 1 1 Tone Audiometry dE Bone Right Tone 10 1 Open NOAH 2 Enter patient data see NOAH manual or Double click on any client 3 Place the headphones on the patient s head 4 Instruct the patient how to use the patient response button when he she hears a tone 5 Open Module Selection Measurement 6 Select the Measurement tab Select the Affinity AC440 Icon Select desired user in user drop down menu upper left hand corner 9 Select Tone Audiogram ES if needed 10 Select test ear and transducer in
60. m or the Speech Audiogram when you launch the module C Frequency List Selecting deselecting some of the 11 audiometric standard frequencies for HL Hearing Level MCL Most Comfortable Level and UCL Uncomfortable Level D Speech The speech Audiogram can be displayed in Table form USA or Graphic form Equinox Visible Speech VSP440 Software Page 4 25 E Intensity steps Choose between 1 dB or 5 dB in level step size F Default headset Choose insert phones or standard headset G Enable Touch switch in locked cursor mode Select whether the touch switch shall be activated when the mouse is crossing the touch switch area in the Tone audiogram or if the Audiometer shall be in the locked cursor mode H Print Wizard is described in the chapter Print Layout I Advanced For entering of the advanced setup described in chapter Advanced Setup Advanced Setup Common Advanced Setup Audometer keyboard Che Common Tone Speech Automatic output selection 1 4 Ch2 opposite chl output Bone Masking Insert masking Intensity 2 Default Intensity when changing output 30 3 Ch 2 start intensity 30 Morita Allow monitor on live voice speech Talk Back Default Talk Back level Min Mar Talk Forward Default Talk Forward dE 60 Allow Talk Fred in FF 100d6 7 Function keys Tone Additional tests Function keys Speech Audiometer keyboard Ch
61. mal gt HF Show gt HF Zoom gt Normal Save without exit Report page Stimulus primary channel Stimulus primary channel Stimulus secondary channel Reset Speech score Speech screen Reset SISI responses SISI screen Toggle Output Ch1 duplicates audiometer keyboard functionality Toggle Input Ch1 duplicates audiometer keyboard functionality Toggle Output Ch2 duplicates audiometer keyboard functionality Toggle Input Ch2 duplicates audiometer keyboard functionality Store threshold Store threshold Store not heard threshold Select Right output in Ch1 Select Left output in Ch1 Print Print preview Print layout manager Windows print setup dialog Visible Speech VSP440 Software Page 4 44 Altt E T Alt E E Alt S S Alt S G Alt S T Alt T M Alt T W Alt T H Alt T M Alt T S Alt H A Escape etc Tone Screen Arrow up Arrow down Arrow right Arrow left Page up Page down Transfer historical to actual session Export historical session to XML Setup dialog General setup dialog Temporary setup dialog MLD screen Weber screen HLS Hearing Loss Simulation MHA Master Hearing Aid SISI screen About box access to version number and license manager Returns from special modes like MLD Weber HLS MHA SISI Mousetrap test mode Change Intensity or Frequency Ch1 or Ch2 depending on Setup selections Change Intensity or Frequency Ch1 or Ch2 depending on Setup selectio
62. mouse over touch switch f ight Hight x 38 Use German speech score scheme Input Mier y 39 Reset speech score on intensity change 29 Mic w 40 Number of speech wards O Presentation Man Rev JL JUL a sf User defined SOS curve comments Channel 2 DS 1 gees er Ort SOS 2 Input a Presentation SLDS 3 Man Bey Sim Alt es t e 33 f gf Input levels 34 Micl 1 r ENDS A Monitor 35 Chl Che Talk Back 36 Iw S051 2 3 MCLUCL Aided ee a en 37 Binaural OR Cancel 28 Output Ch 1 Selects Right Left Bone L Bone R FF1 or FF2 as default output for Channel 1 29 Input Ch 1 Selects Mic 1 Mic 2 CD1 or CD2 as default input for Channel 1 30 Presentation Ch 1 Man will present the signal to the patient only when the Stimuli of Channel 1 is activated Rev will cause the signal to be presented continuously only disappearing when the Stimuli of Channel 1 is activated Furthermore you may select between single and continuous pulse presentation Both options can be set as default 31 Output Ch 2 Selects Right Left Bone L Bone R FF1 or FF2 as default output for Channel 2 32 Input Ch 2 Selects as default Mic 1 Mic 2 CD1 or CD2 input for Channel 2 33 Presentation Ch 2 Man will present the signal to the patient only when the Stimuli of Channel 2 is activated Rev will cause the signal to be pr
63. nd pressure levels 10 cm behind the reference point 68 5 0 6 1 dB 66 9 to 68 9 dB The test room is checked using a sound level meter in position Fast The sound level meter should be equipped with an extension piece or placed on a stand in order to avoid reflections from the person using the sound level meter If a linear scale is used relatively small fluctuations in the sound pressure will produce large deviations on the meter If the needle is fluctuating due to warble signals the maximum deflection is used as the result The sound pressure in the reference point is first determined at the lowest test frequency used the influence of the room has here the greatest influence Measure the values around the reference point If the conditions are not fulfilled the reference point and or the loudspeakers and equipment has to be moved to another position and the measurements are repeated Experience shows that the movement should be of at least 0 5 m before any measurable effect is seen The sound field must be checked in the whole frequency range using the current test signals e g warble tones at the audiometric frequencies in the range of 250 Hz to 8000 Hz It is checked that the deviations around the reference point are not exceeding the noted values The reference point can be marked using a weight in a string hanging down from the ceiling Also mark the position of the equipment used e g by the means of tape on the flo
64. ng on Setup selections Change Intensity or Scoring correct incorrect depending on Setup selections Change Intensity or Scoring correct incorrect depending on Setup selections Enables CD input adjustment Reset Speech score Play wave files Stop wave files Pause wave files Phonem 0 Phonem 1 Phonem 2 Phonem 3 Select SRT in speech table mode Toggle circular SDS1 2 and 3 in speech table mode Not implemented Default windows behavior is Help Mousetrap test mode Temp setup Talk forward 20dB Extended Range Tone screen Speech screen Print Save and exit Visible Speech VSP440 Software Page 4 46 F10 F11 F12 Shift F6 Shift F7 Shift F9 Shift F12 Left Ctrl Space Right Ctrl Zz 0 AA ON O Alt F P Alt F V Alt F Y Alt F R Alt E T Alt E E Alt S S Alt S G Alt S T Alt T M Alt T W Alt H A Escape Equinox Jump to actual session Add historical layer Edit mode Toggle Dual and Single Audiogram Toggle High frequency Normal gt HF Show gt HF Zoom gt Normal Save without exit Report page Stimulus Ch1 Stimulus Ch2 Stimulus secondary channel Reset Speech score Speech screen Toggle Output Ch1 duplicates audiometer keyboard functionality Toggle Input Ch1 duplicates audiometer keyboard functionality Toggle Output Ch2 duplicates audiometer keyboard functionality Toggle Input Ch2 duplicates audiometer keyboard functionality St
65. ni on Tatio he D L Database on lot P D SS Dokuman on Lara 10 Q 2 SS Procksti on Tarkio R a SS Vssia on art LO Ts Y Control Panal a Meta Device s LY Nobis Phore Browser a Wi My network Haces P Recycle Bin Click the setup file i HIT440 Language Package French After next restart of your module the choices of languages will appear in the general setup General setup General HIT440 m Predefined Battery type m Warble adjustment New Remove E rate 25 0 7 Selected Battery Name of Battery z Frequency deviation 3 00 Voltage 1100 mV Impedance 0 0 Ohm a Bi gt si Hala zi m Testbox Ref and coupler Non linear stimulus Internal S Normal Number of FFT s for averaging 50 gt External 2 B amp K type 4 el gt Environmental noise r Outside limits m Language F Show warning M Show warning English United States y English United States French France German Germany Italian Italy Japanese Cancel Spanish Traditional Sort WV Display gray background on printout Equinox System Installation Page 3 5 Step 2 Turn on the Equinox and connect the USB cable to the back of the Equinox labelled USBIPC and plug the other end of the USB cable into a USB slot on your PC and you will see this screen Found New Hardware Wizard Welcome to the Found New Hardware Wizard This wizard helps you install a device driver
66. nrnnnnnnnrnnnrnnnnnnnnnnnnnnnnns 3 2 3 3 1 Windows 2000 operative system install Equinox driver and software oocccooccccccnoconcnconcncconononos 3 3 3 3 2 Windows XP operative system how to install Equinox driver and Software cccccsseeeeeeeeeeeees 3 9 3 3 3 Windows 98SE operative system how to install Equinox driver and software ooccccoccocoo 3 12 3 4 How to install a shortcut in the NOAH toolbar for direct access to the Equinox SO WAre ooccccoccccccccncnncnnonccnnnns 3 15 3 5 How to install a shortcut for launching without NOAH ooooccccconccnccnnoconcnnnnccnnnoncnnnononccnnnnnccnnnnnnrrnnnnnnrrrnnnnnnrnrrnnannncnonass 3 15 3 6 WOrKING WIN OtOACCSSS a E a A AAA AAA di 3 15 3 7 CS e e e T E E E 310 4 The AC440 Audiometry Software cuina aia 4 2 4 1 Use of the AC440 software QUICK INStrUcCtiON ooooncccccoonccncnonccnnnnoncnnnnnnncnnnnnnncnnnnnnrnnnnnnrnnnnnnnnnnnnnnnrnnnnnnnrnnennnnoss 4 2 Ast OMG PAUGIOIM GURY currar toi a 4 2 4 1 2 Speech Audiometry ccccccssscccceeeecceeececceucecseseeecsuseecseueeesseeeesseeeessuececseueeessueeessueeeessaeessesseneeesas 4 3 4 2 Reading and Using the Tone Audiogram Screen cccccesccccsesscecseesscecseesscesseesecessenseceneusscessaeecessaseeeeensaseseennsesess 4 4 4 3 Additional features and tests ccccccccsecccssseeceeseeceeeecsuseeceaseeceueecsaeeecsaeeeceeeesaueessaeeessueeeseaeaessaaeessgsessuaeess
67. ns Change Intensity or Frequency Ch1 or Ch2 depending on Setup selections Change Intensity or Frequency Ch1 or Ch2 depending on Setup selections Change Intensity or Frequency Ch1 or Ch2 depending on Setup selections Change Intensity or Frequency Ch1 or Ch2 depending on Setup selections Weber Screen R L C Esc MLD Screen F2 Esc HLS Screen Z X Esc Equinox Store a right side marking Store a left side marking Store a center side marking Leave Weber test Start Stop MLD testing Leave MLD test Right filter toggle ON OFF Left filter toggle ON OFF Leave HLS test Visible Speech VSP440 Software Page 4 45 MHA Screen Z X Esc SISI Screen 0 Z F2 Esc Right Select next available filter circular toggle Left Select next available filter circular toggle Leave MHA test Reset responses and presentations Changes Intensity increases 0 1 2 and 5dB Circular toggle Start Stop SISI testing Leave SISI test Speech Screen Arrow up Arrow down Arrow right Arrow left Page up Page down SHIFT XxX NTO T0CO vo 171111 n WH WN TT Oo ON OO FP W N gt Equinox Change Intensity or Scoring correct incorrect depending on Setup selections Change Intensity or Scoring correct incorrect depending on Setup selections Change Intensity or Scoring correct incorrect depending on Setup selections Change Intensity or Scoring correct incorrect dependi
68. ogram 25 Talk Back Swap intensity keys on PC keyboard 26 v 17 M Swap arrows on intensity buttons 27 102 HL MCL f UCL Bided Binaural Cancel 10 Output Ch 1 Selects Right Left Bone R Bone L FF1 or FF2 as default output for Channel 1 11 Input Ch 1 Selects Tone or Warble Tone as default input for Channel 1 12 Presentation Ch 1 Select as default between Man and Rev Man will present the signal to the patient only when the Stimuli of Channel 1 is activated Rev will cause the signal to be presented continuously only disappearing when the Stimuli of Channel 1 is activated Furthermore select default between single and continuous pulse presentation 13 Output Ch 2 Selects Right Left Bone R Bone L FF1 or FF2 as default output for Channel 2 14 Input Ch 2 Selects Tone or Warble Tone as default input for Channel 2 15 Presentation Ch 2 Select as default between Man and Rev Man will present the signal to the patient only when the Stimuli of Channel 2 is activated Rev will cause the signal to be presented continuously only disappearing when the Stimuli of Channel 2 is activated Furthermore select as default if the presentation shall be in both channels simultaneously Sim by locking channel 1 and channel 2 together or if the presentations in the two channels should be alternating to each other Alt Equinox Visible Speech VSP440 Software Page 4 28 16 Select if Monitor
69. om above and one side INTERACOUSTICS guide for free field audiometry page 5 3 Test room and sound field 3 1 Background noise As by audiometry with earphones it is necessary to know the level of the ambient noise in the test room during the audiometry session The ambient noise may mask out the test signals resulting in erroneous test results If a threshold determination is made in free field the demands to the levels of the ambient noise has to be sharpened as the basic test is binaural and no attenuating cushions from earphones are present 3 2 Control of test room background noise The ambient noise level in the test room is measured using 1 3 octave spectrum analyser or a sound level meter with similar functions Fig 2 shows the maximum permissible levels for ambient noise ISO 8253 2 with either 125 Hz or 250 Hz as the lowest test frequency dB SPL 70 ol O gt 250 Hz 60 93 O gt 125 Hz 50 46 40 44 36 30 30 25 LO Fig 2 Maximum background noise levels for sound field audiometry 20 10 0 1600 2 20 f x 250 3 315 o 400 o 500 f a 630 a 800 gt 1000 8o00 gt 10000 12500 1250 gt 1600 a 2000 a 6300 o 31 5 40 63 80 100 2500 gt 3150 4000 5000 gt 10 Note The values in figure 2 are valid for test of hearing thresholds down to 0 dB HL with a maximum uncertainty of 2 dB du
70. ommon Tone Speech Additional tests Audiometer keyboard Ch1 Automatic output selection Settings representation IV Ch2 opposite ch1 output V Offset BC symbols on screen Bone Masking Insert masking IY Show maximum intensities Intensity Settings printing Default intensity when changing output Off 7 Allow empty sheet print Ch 2 start intensity 30 y V Offset BC symbols on printer Monitor Audiometer keyboard Allow monitor on live voice speech Swap Chi and Ch2 Talk Back Default Talk Back level T Min Max Talk Forward Default Talk Forward t OdB 60 Allow Talk Fwd in FF Cancel Equinox Visible Speech VSP440 Software Page 4 27 Tone Advanced Setup E Audiometer keyboard Che Function keys Tone Function keys Speech Common Tone Speech Additional tests Audiometer keyboard Ch Channel 1 Settings controls Output 10 ignore mouse over touch switch Input qa Jump strategy C Butterfly C Bottom C None pone Intensity decrease when changing frequency Of 20 Presentation Man Rew JL JUL Puls e O 6S Multi pulse length 500mS 21 e Channel 2 C Single pulse length 1000m5 jor le ETS hal 00m 5000 rs NB Settings representation Presentation Masking Man Rev Sim t Store masked thresholds in a separate curve 22 9 15 ss Show masking information on screen 23 iw 16 Show masking information on printer 24 E Show Chi and Ch2 in a single audi
71. on 3 3 2 Installation on Windows 98SE see section 3 3 3 Equinox System Installation Page 3 2 3 3 1 Windows 2000 operative system install Equinox driver and software Step 1 Power up your computer and launch windows and wait for the desktop to appear Put the CD in the computer and wait until the AC440 starts installing If it does not start automatically open Windows Explorer and double click on the file called Setup exe on the CD ROM fg AC440 InstallShield Wizard Welcome to the InstallShield Wizard for AC440 The InstallShield Ri wizard will allow you to modify repair or remove HIT440 To continue click Mext Cancel Press Next and follow the directions on the screen Equinox System Installation Page 3 3 i Acaso InstallShield Wizard InstallShield Wizard Completed The InstallShield Wizard has successfully installed HIT440 Click Finish to exit the wizard Finally you will see this dialog which means that your software has been correctly installed Press Finish to finish the installation Now you are ready to connect the Equinox hardware to your computer Installation of Language specific files Right click the start button on your desktop Open Explore Search Scan For viruses Properties Open All Users Explore All Users Click Explore Gea GF Pue fps rae i Baben Dengue Packages Ejo Folders es Currently on the 00 4 esto p 8
72. operties Status Ready Type hp LaserJet 1300 PCL 6 Where Marketing Comment Print to file Print range Copies e All Number of copies 1 AO Cancel 4 6 3 Edit sai NOAH Affinity AUD ES File Print aie Setup view Window K Tone o ee Export By activating this menu item it will be possible to export all audiograms from one stored session in XML format Equinox Visible Speech VSP440 Software Page 4 22 4 6 4 Tests ES Fie Print Edit MESA Setup View Window Help A Bev weber pes la MLE JE R HMO mn Channel 1 E Channel 1 Right r Test allows for the choice of all dedicated tests available under AC440 NOTE If test is greyed out the license for the test is optained call your local distributor Weber The Weber test is included in the Affinity platform as a pre defined test with a dedicated screen layout The test is deployed to disclose whether a unilateral or asymmetric loss is conductive or sensory neural A normal patient would report that the sound is heard equally in both ears A patient with a conductive hearing loss would hear the sound louder in the affected ear This is because the affected ear cannot hear ambient noises as well because of its conductive hearing loss and so is effectively masked to these noises and able to focus more on the sound conducted through the skull You can replicate this yourself by plugging one ear with your finger i e
73. or Please note that the sound field can be affected if new furniture equipment is placed in the test room The chair should be equipped with a headrest INTERACOUSTICS guide for free field audiometry page 9 4 Test signals As mentioned earlier pure tones are not recommended as test signals for threshold determination unless the test room is a distinctly anechoic room Therefore many audiometers are equipped with the facility of producing warble tones International standards like ISO 389 7 can be used for calibration of warble tones Another possibility is the use of filtered noise Calibration values are found in the standards for diffuse field ISO 389 7 4 1 Warble tones FM Is e g used for determination of threshold and functional gain examinations Centre and modulation frequency bandwidth and curve shape for the modulated signal is stated by the manufacturer of the audiometer and can normally not be altered by the user ISO 8253 2 specifies the following for FM tones The centre frequencies should be as specified Will normally be fulfilled by all audiometers in IEC 645 1 or 150266 with the tolerances of less than 3 The shape of the modulating signal should be Will normally be fulfilled by all audiometers sinus or triangular with symmetrical up and down traces on a linear or logarithmic axis The modulation frequency should be between 4 Will normally be fulfilled but varies with the and 20 Hz with a tolerance of les
74. or both ears HOW kudiernater A cay ie bet pdt led fee es Wris Help SS BAERS AA TY ee E 8 amp 0 PAP T y a uu Acteal session In the Advanced Setup for MHA the default settings for the 2 channels can be set Advanced Setup Audiometer keyboard Che Function keps Tone Function ke Common Tone Speech Additional tests Audiometer Wave speech settings MLD settings Multi Frequency HLS MHA Channel 2 Input B J m 6 12 Hee Equinox Visible Speech VSP440 Software Page 4 7 4 3 3 HLS In the Test menu the submenu HLS Hearing Loss Simulation has been added ew NOAH Audiometer AC440 ile Print Edit BESA Setup view 4 Channel 1 Output Rinkt l A The input can be CD1 CD2 Mic1 and Mic2 B Possibility to select historical audiograms HOH dudiomeier AC440 E Fe Piet Edt Test Setup Weer Wide Hii F X OBRABS Rao oye eH B Speech In Nolne JE An eae ne ew ee eae oosa gt 10 29 40 5 Channel 1 7 Lal x r AB A cj sad wl 2g a g r Input level Mi _ yp LL Morita fh Ehi M Che Talk Back yp 100 F F 4 5 1 i 113 5 1 z 3 amp O E H re 35 A T t 34 0 E hee Bec Simai Inc HLS HLS Dec ES REA a a herd Hare Pedersen Hara Scion Dale Today s Babes 28 07 2005 User TD adn Advanced Setup Audiometer keyboard Ch2 Function keys Tone Function keys Speech Common Tone Speech Ad
75. or free field audiometry 4 Ji Testroom and sound aan 6 31 aC ROE OU NCWIT O US 6 ar doi 6 3 2 Control of test room background MOUS Oncala acotado iia 6 Bo FR NSC CONN AOS 7 3 4 Positioning of loudspeakers and control of test room reflections quasi free sound field 8 TEO Saa 10 Aet WADE tomes EN A od 10 4 2 Narrow band NOISE A O EaR 11 MA O AR IA AAA AAA AAA A A 11 D Gall FatlOM cvsisusscascccecect dees stesaycuzscavsceusectSecusbecs vs sscusesusvauccceds coucscssucuaydessaswecesect Uo cmelucccssueuavenssucevedecectses 12 Sk WV GED LG TONES gh Pcs A A AA A bendiiue ES SSA 12 Dd 2 Narrow Dand MOSS pc cgcopouseninsioni ents a a seamed ba aul dacnine a EE 12 dedo pee CMA UC OM GUN Vac tase deat nec ads cun dida cil 12 oy Ao 611 ae gt Ga is a Mri to msm TT Ene Tne fr reo om arte wR one Ee mene e eres oer meee ee eer 14 6 1 Correction values for 45 and 90 position Of lOUAdSpeakerFS occcocccccncnnccncnnconcnncnncnnnnncnnnnninonannnnnncnonnnennnns 14 A A e cocsevsewenoosnewtcesreddeerts 15 7 1 Survey otr relevant standards for audiometry asi a ida 15 INTERACOUSTICS guide for free field audiometry page 2 1 Background For normal audiometry using air and bone conduction the users are generally well informed about the required equipment set up and routines but there seems to be a need for the same concerning free field audiometry It is a well known fact that free field audiometry is made in many different way
76. ore threshold Store not heard threshold Print Print preview Print layout manager Windows print setup dialog Transfer historical to actual session Export historical session to XML Setup dialog General setup dialog Temporary setup dialog MLD screen Weber screen Aboutbox access to version number and license manager Returns from special modes like MLD Weber Mousetrap test mode etc Visible Speech VSP440 Software Page 4 47 4 8 Technical Specifications of the AC440 Software Specifications AC440 module Standards Audiometer Equinox Audiometer Tone EN60645 1 ANSI S3 6 Type 1 Speech EN60645 2 ANSI S3 6 Type A or A E Calibration AC ISO389 1 ISO389 2 BC ISO389 3 EMC EN 60601 1 2 Safety EN 60601 1 Class I Type B UL 2601 1 CAN CSA C22 2 No 601 1 M90 EN 60601 1 1 Warning Only recorded speech material with a stated relationship with the calibration signal should be used In the calibration of the instrument it is assumed that the calibration signal level is equal to the average level for the speech material If this is not the case the calibration of the sound pressure levels will be invalid and the instrument needs recalibration Notice No installation precautions are necessary to avoid unwanted sound radiation from the audiometer Notice To establish conformity with the IEC 60645 2 standard it is important that the speech input level is adjusted to OVU It is equally imp
77. ortant that any free field installation is calibrated at the site where it is used and under the conditions that exists during normal operation Maximum Hearing AC AC dBHL BC NB Extern Levels dBHL aE dBHL dBHL FF m bl binal eg Dc bi Fs N 3000 120 115 120 80 110 110 4000 120 115 120 80 110 110 Tolerances The tolerances for the sound pressure levels are 2 dB The tolerances for the vibration force levels are 5 dB Distortion Levels Distortion levels are below 1 5 for AC and 3 for BC Calibration The output level control for speech signals is calibrated in terms of hearing level for the A type audiometer and SPL for the A E type Masking levels are calibrated in terms of hearing level for type A and SPL for type A E Extended Range If not activated the AC output will be limited to 20 dB below maximum Function output Input Tone Warble Tone CD1 CD2 Mic1 Mic2 Warble Tone 112 0 100HZ sine wave or triangular Frequency Range 100 10000Hz Frequency Response The frequency response with a TDH39 headphone is 125 8000 Hz with or without equivalent free field output The frequency response with a B71 bone vibrator is 250 6000 Hz Visible Speech VSP440 Software Page 4 48 Equinox FF Loudspeaker Output Line Out 1 4 Minimum Load Impedance VU meter for speech Speech RETSPL value Masking Stimulus Narrow Band Noise bandwidth Speech Noise bandw
78. ound New Hardware Wizard Welcome to the Found New Hardware Wizard This wizard helps pon install software for Equinox If your hardware came with an installation CD J or floppy disk insert it now What do you want the wizard to do O Instal from a list or specific location ca Click Next to continue Click next The wizard will automatically find the USB drivers on the CD ROM where the AC440 software also is located Found New Hardware Wizard Completing the Found New Hardware Wizard The wizard has finished installing the software for KJ WOH USE driver Click Finish to close the wizard Cancel Click Finish then a small box appears in the lower right corner which says you can now use the hardware found by windows Equinox System Installation Page 3 11 3 3 3 Windows 98SE operative system how to install Equinox driver and software You need the CD Rom and USB cable Power up your computer and launch the windows desktop screen do not power up the Equinox or plug in the USB cable Note Before you move on with installation of the AC440 software a NOAH3 compatible office system must be installed Insert the CD ROM and the install shield wizard for Equinox will come up Press Next and follow the on screen instructions When options are given between different choices please follow the default suggestion to achieve a standard installation When the installation is done click finish
79. r asking if you want to save the changes in the Noah database The dialog box looks like this k P Do you want to save the changes before exiting Yes Mo 4 6 2 Print a E Print Ctrl F Print Preview k SI Print Layout Print Setup fk Print E Fie FMM edt Setup view w k SI Print Layout a Print Setup a Print Print Preview By activating this menu item the standard Windows print dialog will appear The dialog may look like this depending on the version of your Windows Print Printer Name WIANTS hp LaserJet 1300 PCL 6 Marketirfha Properties Status Ready Type hp LaserJet 1300 PCL 6 Where Marketing Comment Print to file Print range Copies e All Number of copies h 4 JS bl bl e Cancel When All is selected all pages will be printed Otherwise if Pages is selected you can select which pages you want to print Equinox Visible Speech VSP440 Software Page 4 19 Print Preview Prin Ctrl F Print Preview Print Layout Print Setup By activating this menu item the program enters the print preview mode which shows all pages that will be printed Print Layout Print Ctrl F Print Preview Frint Layout Print Setup By activating this menu item the Printer Wizard will appear It is possible make your own hard copy layout PrintWizard Page 1 1 File Element Page Clinic Registration Ackire
80. s not always according to valid standards but we hope that this script will help the user to achieve more knowledge to the field and thereby obtain reliable test results This guide is made in order to make a description of the set up and calibration of the equipment used by audiometric examinations with loudspeakers in free field These requirements and the test routines are all found in the valid standards but we have made an effort to collect the most relevant demands on the subject in this script together with some other helpful information It should be noted that all international standards are subject to revisions which means that there may be issued changes after the release of this script Interacoustics 96 11 28 EC INTERACOUSTICS guide for free field audiometry page 3 1 1 General about free field audiometry Audiometry in free field has many applications e g audiometry on children and evaluation of hearing aid settings Unfortunately audiometry in free field has some disadvantages which is not seen in normal audiometry using earphones Some of these are itis actually not possible to ensure that the tested person especially children stays in the exact reference position during the whole test dimensions of the heads of the tested persons will vary resulting in different distances from the ear to the reference point reflections and standing waves in a standard test room will affect the sound field
81. s for high frequency Acoustics Reference zero for the calibration of audiometric equipment Part 7 Reference thresholds of hearing under free field and diffuse field listening conditions Acoustics Pure tone air conduction threshold audiometry Acoustics Audiometric test methods Part 1 Basic pure tone air and bone conduction threshold audiometry Acoustics Audiometric test methods Part 2 Sound field audiometry with pure tone and narrow band test signals Acoustics Audiometric test methods Part 3 Speech audiometry Note The standards in brackets are older issues identical in content to the new ones INTERACOUSTICS guide for free field audiometry page 15
82. s than 10 manufacturer See the specifications for the audiometer The bandwidth should be between 2 5 and Will normally be fulfilled but varies with the 12 5 relative to the centre frequency and with manufacturer See the specifications for the less tolerance than 10 audiometer Furthermore there are demands for distortion and gating of the signal This will normally be fulfilled by the manufacturer INTERACOUSTICS guide for free field audiometry page 10 4 2 Narrow band noise This has the same applications as warble tones Narrow band noise must fulfil the demands in either IEC 225 e g 1 3 octaves or the demands in IEC 645 1 for narrow band masking noise Most audiometers has masking noise meeting these demands but it can be a problem to use this noise as test signal for free field audiometry Hearing impaired test persons can due to the relatively high frequency content of the noise signals hear the signal in the stop band but not necessarily in the pass band This is caused by the fact that the attenuation outside the pass band is not always sufficient as the specifications describes a demand of 12 dB octave E g the level at 500 Hz only has to be 12 dB lower than the 1000 Hz level to fulfil IEC 645 1 The requirements for the attenuation outside the pass band are made with respect to the demands for effective masking of pure tones by earphones and are sufficient for this For tone audiometry in free field it is
83. select Speech audiogram J Edit With this button it is possible to go into the Edit mode It s here possible to delete the recorded points and to add new points to the audiogram Further more it s also possible to see the properties for a stored point Equinox Visible Speech VSP440 Software Page 4 10 K Print Printout of the sessions acquired data L Save and Exit With this button it is possible to Save the recorded data in Noah and exit the AC440 software M Direct action to view historical sessions e g for comparison purposes N Brings Session List back to Actual Session O Freezes actual or historical session on the screen for comparison to other sessions P Output Ch 1 Selects Right Left Bone L Bone R FF1 or FF2 as output for Channel 1 Q Input Ch 1 Selects Mic 1 Mic 2 CD1 or CD2 as input for Channel 1 R Presentation Ch 1 Man will present the signal to the patient only when the Stimuli of Channel 1 is activated Rev will cause the signal to be presented continuously only disappearing when the Stimuli of Channel 1 is activated Furthermore you may select between single and continuous pulse presentation S Output Ch 2 Selects Right Left Bone L Bone R FF1 or FF2 as output for Channel 2 Input Ch 2 Selects Mic 1 Mic 2 CD1 or CD2 input for Channel 2 T Presentation Ch 2 Man will present the signal to the patient only when the Stimuli of Channel 2 is activated Rev will cause th
84. ss Notset Notset Tel Notset Far Notset Patient data olrel Dex Molrel 1 Dak ofbirty olrel 1 Tel Molsel olsel ha hument Wolse Right FF41 Left FF2 2 3 6 8 amp kHz Equinox Visible Speech VSP440 Software Page 4 20 Menu descriptions print layout Open Opens an existing Print Wizard Save Saves the Print Wizard Exit Exits the Print Wizard Element 3 A A amp PrintWizard Page 1 1 File MRE Add Patient info Add Clinic info Add Audiograr Right Presentation Add Audiogram Left Man Rew Add Speech table Ooan co oom oae Remove Add Patient info Adds the Patients info field Add Clinic info Adds the Clinic info field Add Audiogram Right Adds the Tone audiogram for the Right ear Add Audiogram Left Adds the Tone audiogram for the Left ear Add Speech Audiogram Adds the Speech audiogram Remove Can remove the single fields described above c A on F Add Remove Here it is possible to Add or remove a page The I lt lt gt gt l is used to select the previous page or the next page Equinox Visible Speech VSP440 Software Page 4 21 Print Setup ES File A Es Setup view WW i E Print Ctrl F Print Preview k Te Print Layout Print Setup By activating this menu item the program enters the traditional Windows Print Setup dialog which may look like this Print PK Printer Name EE LaserJet 1300 PCL EGO Y Pr
85. tary knob is pressed 57 Right Attenuator Set up of Right Attenuator for Speech Select the function to be activated when the Ch2 Attenuator rotary knob is pressed Equinox Visible Speech VSP440 Software Page 4 37 General Setup ES File Print Edit EN View Window ABRE Se General Setup k Tone Temporary setup By activating this menu item the program enters the General Setup dialog General setup General 40440 Audiogram symbols scheme 4A Scheme German Edit Delete Clinic information A Audiogram symbol scheme Choose between installed symbols B Edit This feature allows you to draw your own symbols used in the Tone and Speech Audiograms The symbols drawn are depending on the setting of the parameters on the left side of the Dialog box x A 1 JHL SDS 2 Fight 3 Masked 4 T Not heard 1 Select Air Conduction AC Bone Conduction BC or Free Field FF For each symbol a colour can be selected from a colour palette 2 Select Hearing Level HL Speech Discrimination Score SDS Most Comfortable Level MCL or Uncomfortable Level UCL For each symbol a colour can be selected from a colour palette 3 Select Right Left Equinox Visible Speech VSP440 Software Page 4 38 4 Select Masked Not Masked Not heard Not Heard or Aided Unaided For each symbol a colour can be selected from a colour palette 5 Select preferred colour 6 Preview of the symbol desi
86. ted when the Ch1 Attenuator rotary knob is pressed 54 Right Attenuator Set up of Right Attenuator for Tone Select the function to be activated when the Ch2 Attenuator rotary knob is pressed Equinox Visible Speech VSP440 Software Page 4 36 Function keys Speech Here you can configure the F keys of the external audiometer keyboard connected to the Affinity Box when the Speech Audiogram is selected Advanced Setup Ed Common Tone Speech Additional tests Audiometer keyboard Ch Audiometer keyboard Che Function keys Tone Function keps Speech Aight Chi A Fl 55 E i Tone 4udiagram Bonel Ch FF1 Chi Ed FF2 Chi ae F255 NET ticl Ch A 21151 Mic2 Ch DSE CD1 Chi 3054 CO2 Chi Man Chi Rev Ch F355 Single Pulse Reset score Multi Pulse Monitor Ch A Aight Ch2 Left Che E F4 55 Lei Che 3 Save and Exit FF2 Che Off Che Ed Man Che ee Lhe bp Left Attenuator 56 Alt Talk Forward Monitor Che 45 Mici Che Mice Ch Right Attenuator 57 CO1 Che CD2 Ch Ww Ex Tak E OR Cancel 55 F1 F2 F3 F4 Set up of F keys for Speech Select the item s in the row of possibilities in the left box Use gt gt to transfer the selected item to the right F key box If more items are selected they will be toggled through when the corresponding F key is activated 56 Left Attenuator Set up of Left Attenuator for Speech Select the function to be activated when the Ch1 Attenuator ro
87. the instrument has to be returned for service If service is required please contact your local distributor 2 4 Reporting Imperfections Inspect before connection Prior to connecting the Equinox to the mains it should once more be inspected for damage All of the cabinet and the accessories should be checked visually for scratches and missing parts Report immediately any faults Any missing part or malfunction should be reported immediately to the supplier of the instrument together with the invoice serial number and a detailed report of the problem In the back of this manual you will find a Return Report where you can describe the problem Please use Return Report Please realise that if the service engineer does not know what problem to look for he may not find it so using the Return Report will be of great help to us and is your best guarantee that the correction of the problem will be to your satisfaction 2 5 Concerning Repair and Maintenance 1 Interacoustics A S is only considered to be responsible for the validity of the CE marking effects on safety reliability and performance of the equipment if assembly operations extensions readjustments modifications or repairs are carried out by authorised persons a 1 year service interval is maintained the electrical installation of the relevant room complies with the appropriate requirements and the equipment is used by authorised personnel in accordance with the do
88. therefore recommended to use warble tones as test signal 4 3 Speech Speech audiometry in free field can be used for evaluation of hearing impairments in occupational noise matters and by evaluation of discrimination loss DL with and without the use of a hearing aid The material for soeech audiometry must be recorded on either tape or CD Compact Disk and must fulfil the demands given in ISO 8253 3 It must contain the speech test material words and a signal for calibration of the VU indicator of the audiometer as well as signals for the check of the frequency response and distortion The speech material will be different from country to country and is not covered here Live voice testing is not sufficiently reliable and should be avoided The position of the speech loudspeaker is recommended to be 0 frontal ISO 8253 3 prescribes the use of speech weighted noise re IEC 645 2 for competing sound or contralateral masking masking is performed using air conduction preferably using insert phone The signals from the two noise loudspeakers positioned in 45 should be non coherent essential for the consequence of the masking effect of the noise signal This is achieved by inserting a delay in one of the loudspeakers Note This solution may be difficult to realise due to the fact that it often will be necessary to have a delay of 1 2 seconds In practice it is recommended to connect the two loudspeakers in parallel to the pow
89. ueeessaseeseaes 4 7 SS IE aio i 4 7 pe SN AV O E A A e E a extol a a tae het 4 7 i PRE ried eden aaa a a a tecdataten aca cee been Dasma ah a Sia adatea a estes ad a oad awd ernest A anna nae 4 8 4 4 Reading and Using the Speech Audiogram Screen cccccccssssscecnesecccceescececeeseecsecsececeuseeeseuseeesseaseeesensseeeensanees 4 10 4 5 Reading and Using the Speech Audiogram Table Screen cccccseececeeeeeeeeeeeeeeeeeaeceeeeeaeeeeeeeaeeeeeeaaeeeeesaeeeeeessaaees 4 17 4 6 A OO 4 19 raS STRA AR a S A EEEE A A 4 19 AO AA A A A 4 19 AUS A ee eee ae ee eee a 4 20 o en rey eee ne eee ere ee eee 4 20 Menu descriptions print layout isenctewknd nation ed eee a ees 4 21 A O 4 21 Elec 4 21 FAQS idad a A 4 21 PATI SOLU A dA bia ack amare ahaha baleen ech ia en AS ho baeh e E 4 22 AOS mn I PePPAC ges ee e e en ST a o ee O 4 22 ADA TESIS io eins A A A IA ATA lee a ad apa de ea 4 23 A CUD a pees ech clare aber erect eae e cradle ae a aie aa head dace eid 4 25 Advanced SUI tas alse 4 26 OO NEW Se cca cere eesti ce tinct sec A ac ge nate ea 4 43 TOON posi a a o a 4 43 AOL NI WA ici 4 43 o 4 43 NOTA loe ear 4 43 ACAO HAD A WIE Ire Oem vee mn Ie Orn er 4 43 4 7 FG SONOS A e coo 4 44 ATA EMER ANS OMG UG arar il ed 4 44 4 8 Technical Specifications of the AC440 Software coocccconccoccccoonccconccocnnonnnononononnnnonnonnnnonnnnnnnonnnnonnnnonnnnnnrononnnnncncnnnnns 4 48 4 9 Included Parts AC440 Software sa a 4

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