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otometrics MADSEN Midimate 622 User Manual

Clinical/diagnostic audiometer
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Midimate 622
Clinical/Diagnostic Audiometer
User Manual
Doc no. 7-25-9000/09
Part No. 7-25-900
0 4 5 9

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  • Page 1 Midimate 622 Clinical/Diagnostic Audiometer User Manual Doc no. 7-25-9000/09 Part No. 7-25-900 0 4 5 9...
  • Page 2 Printed in Denmark by GN Otometrics A/S, Denmark All information, illustrations, and specifications in this manual are based on the latest product information available at the time of publication. GN Otometrics A/S reserves the right to make changes at any time with- out notice.

  • Page 3: Table Of Contents

    MIDIMATE 622 OPERATION MANUAL Table of Contents TABLE OF CONTENTS 1. GENERAL INFORMATION 1.1 Introduction ....... . . 1.2 About This Manual.
  • Page 4 MIDIMATE 622 OPERATION MANUAL Table of Contents 5.3 Speech Testing ....... 31 5.3.1 Introduction to Speech Audiometry .
  • Page 5 MIDIMATE 622 OPERATION MANUAL Table of Contents 10. POWER-ON OPTIONS 10.1Accessing Power-On Options ..... . . 57 10.2Pulsing ........57 10.2.1 Pulsing Rate .
  • Page 6 MIDIMATE 622 OPERATION MANUAL Table of Contents APPENDIX B: MIDIMATE 622 SCHEMATICS Audiometric Examination & Preprogrammed Tests ....79 Setup Structure & Test Phase Options ..... 80 Setup Procedure: Tone .

  • Page 7: General Information

    1.1 INTRODUCTION The MIDIMATE 622 is the second member of the new generation of Introduction to the audiometers from GN Otometrics, which started with the Midimate 602. This MIDIMATE 622 dual-channel clinical/diagnostic audiometer features a unique multi- lingual menu-driven display and five user-programmable test setups for optimal operating efficiency during daily routine examinations.

  • Page 8: About This Manual

    All instruments with software versions 3.0 and higher are equipped with an internal memory for printing out test data in audiogram form directly to an external printer, or to ZODIAC 901, GN Otometrics's Middle-Ear Analyzer. In the latter case, printout will be performed on either the analyzer's own built-in printer or on an external printer depending on how the analyzer is configured.

  • Page 9: Test Conditions

    MIDIMATE 622 OPERATION MANUAL 1. General Information 1.3 TEST CONDITIONS The ambient noise conditions for audiometric tests should be less than 30 to Silent Booth 40 dBA SPL. In most cases an audiometric silent booth is recommended (especially for speech audiometry) but may not always be necessary. If the patient to be tested is to be located next to the audiometer, ensure that the display and control panel are not visible to the patient.

  • Page 10: Service And Repair

    1. General Information MIDIMATE 622 OPERATION MANUAL 1.6 SERVICE AND REPAIR Service and repair of electromedical equipment should only be carried out by the equipment manufacturer or by authorized representatives. The manufacturer reserves the right to disclaim all reponsibility for the operating safety, reliability and performance of equipment serviced or repaired by other parties.

  • Page 11: Installing The Midimate

    MIDIMATE 622 OPERATION MANUAL 2. Installing Midimate 622 2. INSTALLING THE MIDIMATE 622 2.1 UNPACKING AND INSPECTION The MIDIMATE 622 is shipped in its own custom-made carton together with Unpacking this Operation Manual, a Packing Specification and standard accessories. Please do NOT dispose of this carton in case the instrument needs to be returned to your distributor for service or repair.

  • Page 12: Figure 1:Midimate 622 Connection Panel

    MIDIMATE 622 OPERATION MANUAL 2. Installing Midimate 622 Connection To For printout, connect external printer or ZODIAC 901 Middle-Ear Analyzer to External Printer RS232C serial data interface port. Use one of the following cables: External printer: serial printer cable 8-71-420 ZODIAC 901: 9/9 serial data interface cable 8-71-340...
  • Page 13 MIDIMATE 622 OPERATION MANUAL 2. Installing Midimate 622 Fig. 1. Midimate 622 Connection Panel. WARNING! Chemical cleaning agents containing ammonia or alcohol will damage the cabinet and display. DO NOT USE ABRASIVE CLEANERS! t WARNING! Before replacing a fuse or changing voltage, first switch off instrument and disconnect from mains power supply!

  • Page 14: Care And Maintenance

    MIDIMATE 622 OPERATION MANUAL 2. Installing Midimate 622 2.4 CARE AND MAINTENANCE The MIDIMATE 622 requires no preventive maintenance. However, it is Cleaning recommended that the following guidelines be observed. The instrument should be kept clean and as free of dust as possible: ·...
  • Page 15 MIDIMATE 622 OPERATION MANUAL 2. Installing Midimate 622 However, the instrument should NOT be left switched on with the dust cover CAUTION! in place, as this may cause severe overheating and damage to the instrument. Do not expose the instrument to direct sunlight and keep it well- ventilated at all times to prevent overheating.
  • Page 16 MIDIMATE 622 OPERATION MANUAL 2. Installing Midimate 622...

  • Page 17: General Description

    MIDIMATE 622 OPERATION MANUAL 3. General Description 3. GENERAL DESCRIPTION 3.1 GENERAL Unlike most other audiometers, the MIDIMATE 622 has no switches for selecting fundamental parameters nor potentiometers for calibration of inputs and patient communication/monitoring functions. Instead these parameters are selected using the control panel together with the display while the conventional potentiometers on the rear panel are largely replaced by electronic level controls.

  • Page 18: Figure 3:The Selection Tree

    MIDIMATE 622 OPERATION MANUAL 3. General Description Menu Menu Fig. 3. The Selection Tree...

  • Page 19: Front Panel Controls

    MIDIMATE 622 OPERATION MANUAL 3. General Description However, note that the Talk Over button islocated in the OPERATION panel Talk Over because, in addition to its function as a Level control, pressing this button interrupts any stimulus signal being presented to the patient in order to permit talk over.

  • Page 20: Softkeys

    MIDIMATE 622 OPERATION MANUAL 3. General Description Menu 11. This pushbutton returns you to the top of the selection tree displaying either the Select User Test Menu or the Select Function Menu depending on which “branch” of the tree has been previously selected. Tone Switch/ 12.

  • Page 21: Start-Up

    MIDIMATE 622 OPERATION MANUAL 3. General Description During setup, these keys select the options shown on the lower line of the In Setup Mode display. During operation in test mode, the softkeys control supplementary functions In Test Mode as described in section 5.1.4. 3.5 START-UP 1.
  • Page 22 MIDIMATE 622 OPERATION MANUAL 3. General Description If the self-test fails or displays a specific error, call your distributor right away and report exactly what was displayed. Note that calibration memory errors do not prevent operation-error will be shown on display whenever that location is accessed! Audiometric examinations may be divided into two separate phases, the Setup Phase and the Test Phase.

  • Page 23: Test Setup

    MIDIMATE 622 OPERATION MANUAL 4. Test Setup 4. TEST SETUP 4.1 GENERAL There are two setup modes: · Preprogrammed (User) Tests · Manually selected Tests Pressing MENU while in Setup Mode, toggles between these two modes. MENU The audiometer will remain in the same setup mode until the user toggles to the other mode by pressing MENU.

  • Page 24: Manual Test Setup

    MIDIMATE 622 OPERATION MANUAL 4. Test Setup 4.3 MANUAL TEST SETUP Composing a specific test is performed by means of selections from a series of menus. During menu selection, the upper line always displays the function in question while the lower line shows the possible options that may be chosen. In order to make the audiometer setup more logical, a specific setup sequence is always followed.

  • Page 25: Default Settings In Manual Test Setup Mode

    MIDIMATE 622 OPERATION MANUAL 4. Test Setup The operator now has the option of choosing transducer. Press Softkey 1 under “Air” to select Headphone Output and the display will Softkey 1 now change to the following: (Tone,Air) Stimulus Side ?: Left Right Press Softkey 2 under “Right”...
  • Page 26 MIDIMATE 622 OPERATION MANUAL 4. Test Setup Stimulus Types 2. Under Air are the 3 stimulus types available in this test: C, P and W, which stand for Continuous, Pulsing and Warble. C is underlined meaning that Continuous tone is the default setting. Softkey 2 Pressing Softkey 2 moves the cursor to the next letter enabling the user to select stimulus type.

  • Page 27: Operating In Test Mode

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode 5. OPERATING IN TEST MODE In Test Mode, the Midimate 622 behaves similarly to a conventional audiometer with dedicated controls, except for the Softkey functions. This chapter will describe the operation of the instrument in both pure tone and speech testing as well as describe the controls in detail.
  • Page 28 MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode Potentiometer In Left+Right stimulus situations, this knob controls the Right stimulus Hearing Level. It may also be used as a potentiometer control during sensitivity adjustment of input levels. Frequency # 20 This rotary knob controls frequency in pure tone audiometry.

  • Page 29: Patient Communication & Monitoring Controls

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode Extended Range This function is primarily for safety purposes. It ensures that the maximum SPL presented to the patient will not exceed approximately 110 dB SPL, unless separately enabled by the operator. This button enables presentation of high level intensities.
  • Page 30 MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode Monitor Level When this button is depressed, the Monitor level of the Stimulus signal may be adjusted. The setting of the “potentiometer” is shown both as a bar-graph on the display and as a percentage of range. Level may be adjusted by turning any of the rotary control knobs-level is set electronically thus preventing accidental alteration.

  • Page 31: Input Level Controls

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode The display will show a bar-graph indicating the position of the “Tape 1 Stimulus LED Potentiometer” while at the same time the Stimulus LED will function as a VU as VU Meter meter indicating tape signal level.

  • Page 32: Option Softkey

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode SISI Test During the SISI test, this key toggles between 1 & 5 dB intensity modulation. Softkey 4 Softkey 4 In Test Mode, Softkey 4 is used to switch masking on and off. The current mode is indicated by a cursor.
  • Page 33 MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode Clr-L: Pressing Softkey 1 clears (erases) all data for the left ear (Air, BC, Softkey 1 F.F.). Clr-R: Pressing Softkey 2 clears (erases) all data for the right ear (Air, BC, Softkey 2 F.F.).
  • Page 34 MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode After selecting one of the 5 test numbers, the current test parameters will be saved in the non-volatile memory, replacing any previous test defined under this number. The display will indicate the test has been saved as the selected User Test and the instrument automatically reverts to Test Mode.

  • Page 35: Pure Tone Testing

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode 5.2 PURE TONE TESTING This section gives a short description of how to operate the MIDIMATE 622 Diagnostic Audiometer for both air and bone conduction and free-field threshold measurements using pure tones. For a more comprehensive treatment of this subject, please refer to 6.

  • Page 36: Free-Field Pure Tone Testing

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode MENU 4. After the power-up test has been completed, the audiometer will automatically access User Test 1. Proceed with this preprogrammed test or press MENU to access any other User Test or press MENU again to access the Select Function Menu and set up your own test as described in 4.

  • Page 37: Speech Testing

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode Choosing F.F. in pure tone audiometry automatically selects warble Warble Tone tone as the stimulus signal. Stimulus 5. Place the patient in the sound cabin facing away from the audiometer and ensure that the left and right speakers are facing the corresponding ears.

  • Page 38: Speech Audiometry With Live Voice Signal

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode 5.3.2 SPEECH AUDIOMETRY WITH LIVE VOICE SIGNAL With a live voice signal it is possible to perform either threshold measure- ments or discrimination tests and to present the stimuli via Air, Bone or Free Field.

  • Page 39: Free-Field Speech Audiometry

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode 4. Switch on the instrument. 5. After the power-up test has been completed, the audiometer will MENU automatically access User Test 1. Proceed with this preprogrammed test if suitable or press MENU to access any other suitable User Test or press MENU again to access the Select Function Menu and set up your own test as described in 4.

  • Page 40: Short Increment Sensitivity Index (Sisi Test)

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode · Rainville Test The first three tests use air conduction as output, so set up the audiometer and arrange the patient as previously described in 5.2.1 on page 23. For Rainville, set up as described in 5.2.2 on pages 24 and 30. SOFTKEY 3 All four tests are accessed from the Select Function Menu.

  • Page 41: Fowler's Test (Ablb)

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode 8. Press Softkey 2 to change modulation increment to 1 dB and initiate test SOFTKEY 2 by pressing Tone Switch again. The MIDIMATE 622 will now automatically count the number of Modulation presentations to the patient and stop after 20 presentations.

  • Page 42: Rainville Test

    MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode TONE 4. Press Tone Switch to initiate test and pure tones will be introduced simultaneously to both ears. MENU 5. Press MENU to exit. Please refer to section 8.3 for further details on this test. 5.4.4 RAINVILLE TEST The Rainville Test is used to determine the bone conduction threshold for one ear without testing the other ear.

  • Page 43: Pure Tone Audiometry

    MIDIMATE 622 OPERATION MANUAL 6. Pure Tone Audiometry 6. PURE TONE AUDIOMETRY 6.1 AIR CONDUCTION THRESHOLD MEASUREMENTS Pure tones for threshold measurements are selected by the frequency switch, the digital display showing the frequency selected. In addition, the following functions are available via the softkeys: Continuous, Pulsing and Warble Tones (Softkey 2) Masking On/Off (Softkey 4) Via Options Menu (Softkey 3):...

  • Page 44: Bone Conduction Tests

    MIDIMATE 622 OPERATION MANUAL 6. Pure Tone Audiometry From this display you can select three different routings for masking: 1. Air: This selection permits contralateral masking with Narrow-Band Noise at a default level of 20 dB in the selected ear. Narrow-Band Noise is automatically selected since it is the only valid masking source in pure tone audiometry: Freq.

  • Page 45: Bone Conduction Using Masking And A Normal Headset

    MIDIMATE 622 OPERATION MANUAL 6. Pure Tone Audiometry Bone conduction tests must be carried out under quiet conditions. Measurements made under noisy conditions will result in elevated threshold and inaccurate audiograms. This is especially true when testing the lower frequencies because of low frequency noise from the building or from air conditioning and so on.

  • Page 46: Bone Conduction Audiometry With Masking And Insert Phone

    MIDIMATE 622 OPERATION MANUAL 6. Pure Tone Audiometry 6.6 BONE CONDUCTION AUDIOMETRY WITH MASKING/INSERT PHONE As stated above, one gets a certain bone conduction effect from a normal receiver caused by vibration. This is especially true for the lower frequencies. In cases of a big difference of hearing loss in the two ears where one has to use high masking intensities, one can get false masking.

  • Page 47: Speech Audiometry

    MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry 7. SPEECH AUDIOMETRY Either live voice or speech from tape or CD can be used for speech audiometry and both measurements can be performed using the MIDIMATE 622. The audiometer has connections for microphone for live voice or tape recorder (or CD player), from which you can play back word lists for threshold and discrimination determination.

  • Page 48: Speech Audiometry With Live Voice

    MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry Discrimination Furthermore, you will find certain cases where the discrimination Percentage percentage is less when a certain intensity is exceeded. The discrimination percentages at different intensities are normally entered on a special speech audiogram which graphically shows the ratio between the intensity and the discrimination percentage.

  • Page 49: Live Voice Discrimination Test

    MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry Before commencing the test, adjust Microphone Level. Put on the monitor headset or place the microphone approximately 20 cm from your mouth, and read from the word list. At the same time adjust Microphone Level so that channel 1 VU meter gives peak deflection to 0 VU.

  • Page 50: Speech Audiometry With Tape Recorder Or Cd Input

    MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry 7.4 SPEECH AUDIOMETRY WITH TAPE RECORDER OR CD INPUT The procedure for speech audiometry with tapes is the same as that described for live voice examinations. For these examinations, tapes with recorded word lists for threshold determination as well as for discrimination determinations are available.

  • Page 51: Recorded Word Lists (Discrimination Test)

    MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry 7.4.2 RECORDED WORD LISTS (DISCRIMINATION TEST) Select the following setup: Speech, Air, Left, Tape, No Mask. The following display appears: -Speech- L:Tape -Test- 20 dB Start playback unit and make sure the VU meter gives deflection to O VU. If necessary, adjust Tape 1 level by pressing Tape 1 to display the VU meter and then turning one of the rotary knobs.
  • Page 52 MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry ( Speech, Air, Left, Micr, Mask : Air,) Masking No Mask WN From this display, you can select the required masking noise and (if speech noise is chosen) the following is displayed: -Speech- Air L:Micr R: SN -Test-...

  • Page 53: Free-Field Speech Audiometry

    MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry 7.6 FREE-FIELD SPEECH AUDIOMETRY The MIDIMATE 622 is designed so that it can be used for free-field speech audiometry in combination with suitable power amplifiers and loud- speakers. Different types of amplifiers may be used depending on the maximum intensity level required in the free field.
  • Page 54 MIDIMATE 622 OPERATION MANUAL 7. Speech Audiometry This page has intentionally been left blank!

  • Page 55: Special Tests

    MIDIMATE 622 OPERATION MANUAL 8. Special Tests 8. SPECIAL TESTS From the Select Function Menu, select: Special and the following display appears: Select special Test : SISI Fowler Stenger Rainv. Select required test by pressing the appropriate softkey. 8.1 SHORT INCREMENT SENSITIVITY INDEX (SISI) TEST Select the following setup: Special, SISI, Left or Right.

  • Page 56: Fowler's Alternate Binaural Loudness Balance Test

    MIDIMATE 622 OPERATION MANUAL 8. Special Tests To find out whether the patient really hears the intensity increments, one can push SISI stop and by this omit one or more presentations and at the same time see if the patient still indicates that he hears the intensity changes-press Softkey 5 to stop the test and then choose whether to reset (Softkey 1) or continue the test (Softkey 5).

  • Page 57: Stenger Test

    MIDIMATE 622 OPERATION MANUAL 8. Special Tests When the exact balance has been found, record the intensities presented to the ears shown on the display. Thereafter, increase intensity in the right ear by 10 dB using masking level control and then find the intensity in the left ear at which the patient indicates that the tone was heard with the same sensation.

  • Page 58: Rainville Test

    MIDIMATE 622 OPERATION MANUAL 8. Special Tests The Stenger principle states that when two tones of the same frequency are introduced simultaneously into both ears, only the louder tone will be perceived. The test is performed by introducing a tone of a particular frequency into the better ear at a level 10 dB above threshold.

  • Page 59: Patient Communication & Monitoring

    MIDIMATE 622 OPERATION MANUAL 9. Patient Communication & Monitoring 9. PATIENT COMMUNICATION AND MONITORING 9.1 INTRODUCTION The MIDIMATE 622 Diagnostic Audiometer has a high-quality patient communication and monitoring system capable of satisfying the most demanding requirements for sound quality. The instrument features built-in talk-over and talk-back amplifiers with individually adjustable monitoring.

  • Page 60: Talk Over

    MIDIMATE 622 OPERATION MANUAL 9. Patient Communication & Monitoring 9.2 TALK OVER OPERATOR TO PATIENT The Talk-Over function enables the patient to receive verbal information from the operator via the output transducer in use, e.g. the headset, the bone conductor and the loudspeakers, but not the insert phone which is only intended for masking purposes.

  • Page 61: Talk Back

    MIDIMATE 622 OPERATION MANUAL 9. Patient Communication & Monitoring 9.3 TALK BACK PATIENT TO OPERATOR The Talk-Back function enables the operator to receive verbal response from the patient via a monitor phone or a loudspeaker. The patient communicates via a Talk-Back microphone (8-72-240) installed in the sound cabin.

  • Page 62: Monitoring

    MIDIMATE 622 OPERATION MANUAL 9. Patient Communication & Monitoring 9.4 MONITORING Via the stetomike monitoring headset or loudspeakers, the operator has full monitoring facilities of all signals presented to the patient. The Talk-Back signal is also heard via the monitoring medium. Monitor Level When this button is depressed, the Monitor level of the Stimulus signal may be adjusted.

  • Page 63: Power-On Options

    MIDIMATE 622 OPERATION MANUAL 10. Power-On Options 10. POWER-ON OPTIONS These options are intended to enable the user to customize the audiometer to his/her own special requirements. The following functions may be controlled via the Power-On Options Menu: · Enable User-Programming ·...

  • Page 64: Pulsing Rate

    MIDIMATE 622 OPERATION MANUAL 10. Power-On Options 10.2.1 PULSING RATE SOFTKEY 1 To alter Pulsing Rate from the default value of 2.5 Hz, press Softkey 1 again to access the following menu: Select Pulsing Rate [Hz]: (Now: 2.5) Press the corresponding softkey to select desired value and note that the selected value is instantly displayed in parentheses after “Now”.

  • Page 65: Programming

    MIDIMATE 622 OPERATION MANUAL 10. Power-On Options The audiometer has two test modes for assisting the application programmer in developing software and testing communication between the MIDIMATE 622 and a computer. 1. Echo Mode 2. Display Received message Echo Mode enables the communication between the audiometer and a computer to be tested while “Receive”...

  • Page 66: Printer

    MIDIMATE 622 OPERATION MANUAL 10. Power-On Options 10.6 PRINTER MIDIMATE 622 Your MIDIMATE 622 is equipped with a printout capability. This facility Printout Capability enables Air, Bone and Free-Field data for both ears to be memorized and printed out as audiograms to: a standard external printer (serial interface) ZODIAC 901's built-in printer (serial interface) ZODIAC 901's external printer (parallel interface)

  • Page 67: Select Printer

    MIDIMATE 622 OPERATION MANUAL 10. Power-On Options 10.6.2 SELECT Pressing Softkey 1 accesses the following display: SOFTKEY 1 Select Printer: Disable Zodiac Std.H Std.L Selecting “Disable” returns MIDIMATE to its default setting, i.e. data transfer To Disable Printout is enabled instead of printout. Selecting “Zodiac”...

  • Page 68: Format

    MIDIMATE 622 OPERATION MANUAL 10. Power-On Options 10.6.3 FORMAT SOFTKEY 2 Pressing Softkey 2 accesses the following display: Select Format: A4:L,R A4:R,L 110mm Positioning Of Left Paper width may be selected here as well as positioning of left and right &...

  • Page 69: Average Values (Masking)

    MIDIMATE 622 OPERATION MANUAL 10. Power-On Options Air, Left 1000 Hz 20 dB Air, Left 2000 Hz 30 dB Air, Left 4000 Hz 35 dB Air, Left 6000 Hz 40 dB If Threshold Logging is enabled, a Form Feed will be sent to the printer Form Feed whenever printout of audiograms is selected.
  • Page 70 MIDIMATE 622 OPERATION MANUAL 10. Power-On Options This page has been intentionally left blank!

  • Page 71: Test Setup Programming

    MIDIMATE 622 OPERATION MANUAL 11. Test Setup Programming 11. TEST SETUP PROGRAMMING The MIDIMATE 622 enables up to five “User Tests” to be stored for instant User Tests one-key retrieval of your most frequently used test setups. As previously described on page 15, the MIDIMATE 622 is delivered with 3 of these tests preprogrammed at the factory but any or all of these tests as well as other parameters such as HL or Frequency settings may be changed by the user to any of the 142 possibilities listed in Appendix C.
  • Page 72 MIDIMATE 622 OPERATION MANUAL 11. Test Setup Programming SOFTKEY 3 2. From Test Mode (any test you have set up), press Softkey 3 to access the Options Menu and the following will be displayed (although the options available for Softkeys 4 and 5 will vary): Options Menu: 1.5s On 1 dB Progr...

  • Page 73: Calibration

    MIDIMATE 622 OPERATION MANUAL 12. Calibration 12. CALIBRATION The calibration of the MIDIMATE 622 is stored in a non-volatile memory Calibration Stored EEPROM type, which requires no battery backup. In order to prevent in Memory unintentional alteration of calibration this function must be enabled separately before any changes can be made to calibration (please refer to Service Manual).
  • Page 74 MIDIMATE 622 OPERATION MANUAL 12. Calibration This page has intentionally been left blank!

  • Page 75: Data Interface

    MIDIMATE 622 OPERATION MANUAL 13. Data Interface 13. DATA INTERFACE Following the implementation of the RS232C Data Interface in the MIDIMATE 622 (Version 2.0 and higher), two new functions were added as standard. From Version 3.0 and higher, the data interface functions have been extended to include printout to an external printer or to the ZODIAC 901 Middle-Ear Analyzer.

  • Page 76: Data Transfer

    MIDIMATE 622 OPERATION MANUAL 13. Data Interface The Patient Identification number is entered by using the Frequency and Hearing Level knobs on the Control Panel. The cursor is represented by an asterisk ( ❋ ) and is moved by turning the Frequency knob.

  • Page 77: Printout Function

    MIDIMATE 622 OPERATION MANUAL 14. Printout Function 14. PRINTOUT FUNCTION From June 1991, your MIDIMATE 622 has been equipped with a printout MIDIMATE 622 capability. This facility enables Pure Tone air, bone and free-field data for Printout Capability both ears to be memorized and printed out as audiograms to: a standard external printer (serial interface) ZODIAC 901's built-in printer (serial interface) ZODIAC 901's external printer (parallel interface)

  • Page 78: Printers & Connections

    MIDIMATE 622 and ZODIAC 901 (a serial to parallel converter can be obtained from GN Otometrics as an option). Cables for connecting MIDIMATE 622 to a serial printer, a PC or to ZODIAC 901 are...

  • Page 79: Options Menu

    MIDIMATE 622 OPERATION MANUAL 14. Printout Function 14.2 OPTIONS MENU Press Softkey 3 to access the Options Menu. If no Power-On Options have been enabled, the following options will be displayed: Options Menu: 1.5s On 1 dB Datrf. HLL-Off PTS-On When the Printer Function has been enabled, Datrf.

  • Page 80: Average Values (Masking)

    MIDIMATE 622 OPERATION MANUAL 14. Printout Function Softkey 4 Plot: Pressing Softkey 4 starts audiogram printout (Pure Tone audiometry: Air, BC, F.F.). Printout format is predefined during setup as a power-on option. Note that the Ext. Range LED lights up during printout to indicate “busy”...

  • Page 81: Troubleshooting

    MIDIMATE 622 OPERATION MANUAL 14. Printout Function 14.4 TROUBLESHOOTING If your stored data is not being printed out, check the following: Troubleshooting 1. Connections: have you connected the correct cable to the Data Interface connector on the audiometer's rear panel? 2.

  • Page 82: Figure 4:Printer/Pc Connections/Cables

    MIDIMATE 622 OPERATION MANUAL 14. Printout Function 8-71-340 8-71-420 Serial/ Parallel Printer 8-71-340 8-71-360 Parallel Printer Fig. 4. Printer/PC Connections/Cables for MIDIMATE 622 & ZODIAC 901.

  • Page 83: Appendix A: Technical Specifications

    þMIDIMATE 622 OPERATION MANUAL Appendix A: Technical Specifications APPENDIX A: TECHNICAL SPECIFICATIONS Channels Two separate channels: one for stimulus and one for masking. Frequencies Air, Free Field: 125-250-500-750-1000-1500-2000-3000- 4000-6000-8000 Hz. Bone: 250-500-750-1000-1500-2000-3000-4000-6000 Hz. Masking Contralateral and Ipsilateral. Binaural stimulus + masking. White Noise, Speech Noise and Narrow Band Noise.
  • Page 84 MIDIMATE 622 OPERATION MANUAL Appendix A: Technical Specifications Patient Built-in Talk-Over and Talk-Back amplifiers with individually adjustable Communication monitoring. The Monitoring signal is mixed with the Talk-Back signal. Visible Patient Response (LED indicator) supplemented by Audible Patient Response with a separate level control. LED bar-graph V.U.

  • Page 85: Audiometric Examination & Preprogrammed Tests

    MIDIMATE 622 OPERATION MANUAL Appendix B: Schematic Overview APPENDIX B: SCHEMATIC OVERVIEW AUDIOMETRIC EXAMINATION SETUP PHASE SOFTKEY SELECTION AUDIOMETRIC EXAMINATION OPERATOR CONTROLS TEST PHASE SOFTKEY OPTIONS PREPROGRAMMED TESTS TEST 1 TEST 2 SELECT USER TEST TEST 3 TEST 4 TEST 5...

  • Page 86: Setup Structure & Test Phase Options

    MIDIMATE 622 OPERATION MANUAL Appendix B: Schematic Overview STRUCTURE OF SETUP SEQUENCE SETUP = FUNCTION, OUTPUT, STIMULUS, INPUT (optional), MASKING OUTPUT, MASKING INPUT SETUP PROCEDURE : FUNCTION TONE FUNCTION SPEECH SPECIAL PATIENT TEST PHASE OPTIONS Options which can be invoked during Test Phase via Softkey 3: PROGR.

  • Page 87: Setup Procedure: Tone

    MIDIMATE 622 OPERATION MANUAL Appendix B: Schematic Overview SETUP PROCEDURE: TONE SETUP PHASE TEST PHASE FUNCTION OUTPUT STIM MASKING OUTPUT / INPUT No Mask Left I psi Bin.S+M Key 2 = Stim. Mode (C) No Mask Key 3 = Options Right NBN Key 4 = Masking On/Off I psi...

  • Page 88: Setup Procedure: Speech

    MIDIMATE 622 OPERATION MANUAL Appendix B: Schematic Overview SETUP PROCEDURE: SPEECH TEST FUNCTION OUTPUT STIMULUS INPUT MASKING OUTPUT/INPUT No Mask No Mask Tape Ipsi Bin.S+M Left No Mask Micr Ipsi ditto Bin.S+M No Mask Tape Ipsi ditto Bin.S+M Right No Mask Micr Ipsi ditto...

  • Page 89: Setup Procedure: Special Tests

    MIDIMATE 622 OPERATION MANUAL Appendix B: Schematic Overview SETUP PROCEDURE : SPECIAL TESTS SETUP PHASE TEST PHASE FUNCTION SPECIAL OUTPUT STIMULUS MASKING Left Key 2 =1/ 5 dB increments SISI Right Key 5 =Continue / Reset SPECIAL FOWLER L + R ABLB initiated by pressing TONE SWITCH...

  • Page 90: Appendix C: Available Test Setups

    MIDIMATE 622 OPERATION MANUAL Appendix C: Available Test Setups APPENDIX C: AVAILABLE TEST SETUPS FOR MIDIMATE 622 PURE TONE AUDIOMETRY Tone, Air, Left Tone, Air, Left, Mask: Air, NBN Tone, Air, Left, Mask: Ipsi, NBN Tone, Air, Left, Mask: Bin.S+M, NBN Tone, Air, L + R Tone, Air, Right Tone, Air, Right, Mask: Air, NBN...
  • Page 91 MIDIMATE 622 OPERATION MANUAL Appendix C: Available Test Setups Speech, Air, Right, Tape, Mask: Ipsi, WN Speech, Air, Right, Tape, Mask: Ipsi, SN Speech, Air, Right, Tape, Mask: Ipsi, Ext Speech, Air, Right, Tape, Mask: Bin.S+M, WN Speech, Air, Right, Tape, Mask: Bin.S+M, SN Speech, Air, Right, Tape, Mask: Bin.S+M, Ext Speech, Air, Right, Mic Speech, Air, Right, Mic, Mask: Air, WN...

  • Page 92: Special Tests

    MIDIMATE 622 OPERATION MANUAL Appendix C: Available Test Setups Speech, FF, Left, Mic, Mask: Ins, Ext Speech, FF, Left, Mic, Mask: Ipsi, WN Speech, FF, Left, Mic, Mask: Ipsi, SN Speech, FF, Left, Mic, Mask: Ipsi, Ext Speech, FF, L+R, Tape Speech, FF, L+R, Mic Speech, FF, Right, Tape Speech, FF, Right, Tape, Mask: FF, WN...

  • Page 93: Appendix D: Printer Option Table

    MIDIMATE 622 OPERATION MANUAL Appendix D: Printer Option Table APPENDIX D: PRINTER OPTION TABLE 0: Printer Disabled A4:L,R No Header No DataLog No Averaging 1: Zodiac Printer A4:L,R No Header No DataLog No Averaging 2: Std. High A4:L,R No Header No DataLog No Averaging 3: Std.
  • Page 94 MIDIMATE 622 OPERATION MANUAL Appendix D: Printer Option Table 51: Std. Low A4:L,R Header On DataLog On No Averaging 52: Printer Disabled A4:R,L Header On DataLog On No Averaging 53: Zodiac Printer A4:R,L Header On DataLog On No Averaging 54: Std. High A4:R,L Header On DataLog On...
  • Page 95 MIDIMATE 622 OPERATION MANUAL Appendix D: Printer Option Table 101: Zodiac Printer A4:R,L No Header DataLog On Averaging On 102: Std. High A4:R,L No Header DataLog On Averaging On 103: Std. Low A4:R,L No Header DataLog On Averaging On 104: Printer Disabled 110 mm No Header DataLog On...

  • Page 96: Subject Index

    MIDIMATE 622 OPERATION MANUAL Subject Index Subject Index Calibration Check, 65 1 dB Resolution, 26 Calibration Errors, 65 1.5s Off, 26 Calibration Reference, 65 1.5s On, 26 Calibration, Free Field, 65 5 dB Resolution, 26 Care & Maintenance, 8 A4 Format Defined, 60 CD Player, 22, 29, 39, 42 ABLB Test, 31, 48 Cleaning, 8...
  • Page 97 MIDIMATE 622 OPERATION MANUAL Subject Index Display, 1, 8 Front Panel Control Functions, 19 Display Contrast, To Front Panel Layout, Adjust, 19 Diagram Of, 91 DSR Line, 59 Fuses, To Change, 9 Dust Cover, 8 Header, 60, 85 Dynamic Microphone, 52, 53 Hearing Level, 12, 19 Echo, 57 Hearing Level Lock,...
  • Page 98 MIDIMATE 622 OPERATION MANUAL Subject Index Live Voice, 39 Monitor Level, 22, 54 Live Voice Discrimination Test, 41 Monitoring, 21, 51, 54 Live Voice Input, 29 Monitoring Headset, 51, 53, 54 Live Voice Microphone, 51 Narrow-Band Noise, 38 Live Voice Speech Audiometry, 30, 40 Narrow-Band Noise Masking, 45 Live Voice Thresholds, 40 NBN Masking, 36...
  • Page 99 MIDIMATE 622 OPERATION MANUAL Subject Index Preprogrammable Quit Programming, Tests, Factory Defaults, 15 Rainville Test, 50 Preprogrammed Tests, 25 Rear Panel, 9 Printer, 58, 85 Receive, 57 Printer , 55 Reset, Patient I.D. No., 67 Printer Function, 24, Reverse, 12, 20 Printer Menu, 24, 71 RS232C, 1, 6 Printer, Choice Of,...
  • Page 100 MIDIMATE 622 OPERATION MANUAL Subject Index Speech Audiometry, 29, 30, 39, 40, 42 TDH 39, 28 Speech Audiometry and Masking, 43 Template, 64 Speech Audiometry, Tape/CD, 42 Test Mode, 14, 19, 23, 26 Speech Noise, 29, 43 Test Mode, Operating In, 19 Speech Reception Threshold, 39 Test Setup Programming, 63 Speech Testing, 29...
  • Page 101 MIDIMATE 622 OPERATION MANUAL Subject Index ZODIAC 901, Connection To, 74 ZODIAC 901, Printout To, 59, 73...

  • Page 102: Figure 5:Midimate 622 Front Panel Layout

    MIDIMATE 622 OPERATION MANUAL Front Panel Layout Freq L.Tone R:NBN C/P/W On/Off 1000Hz 60dB 60dB Menu Select Level Level M I D I M ATE 622 D i a g no st i c A ud i o m e t e r El e c t r o ni c s Hearing Level Masking Level...

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