HP RM500SL manual Coupling the hearing instrument

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7.11 Coupling the hearing instrument

The RM500SL is supplied with 2 metal couplers, a type HA-1 (ITE) and a type HA- 2 (BTE). Note that an ANSI standard coupler for CICs does not exist. These must be tested in the HA-1 coupler.

When threading the couplers onto the coupler microphone, it is very important that they be firmly tightened to ensure a good acoustic seal. Avoid twisting the coupler microphone cable – turn the coupler not the microphone or unplug the microphone while tightening the coupler.

BTE instruments are coupled to the HA-2 coupler by means of a 3/8th “ (10 mm) length of heavy wall #13 (2mm) earmold tubing. The only purpose of this tubing is to seal the tip of the earhook to the coupler inlet. All of the tubing required by ANSI S3.22 is machined into the metal stem of the HA-2 coupler. The #13 tubing should be inspected regularly for cracks which will cause feedback.

Custom instruments are sealed to the HA-1 coupler with putty so that the end of the eartip is flush with the inside of the coupler opening. Putty should not extend into the coupler cavity or block the sound outlet of the instrument. Vents should be sealed at the faceplate end. It is very important that the instrument be well- sealed to the coupler. Excess low frequency output is usually due to open vents or a poor seal to the coupler.

Open fit instruments must use the coupler and coupling system specified by the manufacturer. This may involve a hook that replaces the open fit tubing or an adapter tube that may be sealed to the opening of the HA-1 coupler with putty.

Receiver-in-canalinstruments are coupled to the HA-1 coupler using putty to seal the receiver module or soft tip to the coupler opening.

Excess low frequency output is usually due to open vents or a poor seal to the coupler.

For health reasons, hearing instruments should be clean before putty is

applied and putty should be replaced frequently.

FastFacts 7.11: Coupling the hearing instrument

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RM500SL User’s Guide Version 2.8

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Contents USER’S Guide Table of Contents General SetupGetting Started General OperationHearing Instrument Tests Setup Ansi S3.22 Hearing Aid TestsOther Hearing Instrument Tests REM Manual Control Speechmap Fitting Procedures TroubleshootingSpeechmap Technical Details About RM500SL Section overviewHelp is available on the following topics by pressing Help FastFacts 1.3 Electronic users guide Warranty, Trademarks, Acknowledgements FastFacts 1.4 Warranty, trademarks, acknowledgementsElectromagnetic Compatability EMC CisprFastFacts 2.1 Getting started Unpacking and connecting FastFacts 2.2 Unpacking and connectingGetting Started Following topics are covered in this sectionMicrophone connection FastFacts 2.3 Microphone connectionFastFacts 2.4 Microphone care Battery pill use and care FastFacts 2.5 Battery pill use and careMicrophone care Coupler microphone Probe microphoneMouse, keyboard, barcode scanner FastFacts 2.6 Mouse, keyboard, barcode scannerGeneral Operation External printer, auxiliary audio outputsFastFacts 2.7 External printer, auxiliary audio outputs Section overview This section covers the following topicsInput device operation Function KeypadFastFacts 3.2 Input device operation Barcode data input FastFacts 3.3 Barcode data inputKeypad keys Function Button FastFacts 3.4 Keypad keysMenus, lists and buttons Setup Box List Box FastFacts 3.5 Menus, lists and buttonsFastFacts 3.7 Program memory removal and replacement Screen messagesGeneral Setup FastFacts 4.1 General setup Date and time setupFastFacts 4.2 Date and time setup Software updatingDisplay settings FastFacts 4.3 Display settings Saving test setupFastFacts 4.4 Saving test setup Networking FastFacts 5.1 Networking Networking requirementsFastFacts 5.2 Networking requirements Networking setup FastFacts 5.3 Networking setupSingle computer connection On the RM500SL, seeFastFacts 5.4 Single computer connection Printing and Storing Results FastFacts 6.1 Printing and storing resultsInternal printer paper loading To load a new roll of paperFastFacts 6.2 Internal printer paper loading FastFacts 6.4 Local printer setup Barcodes, headers and comments on printoutsPrinting to a USB memory stick FastFacts 6.5 Printing to a USB memory stickNetwork printer setup FastFacts 6.6 Network printer setupPrinting to a network file FastFacts 6.8 Data storage to a network fileHearing Instrument Tests Setup FastFacts 7.2 HIT a or B display Graph or table formatFastFacts 7.3 Graph or table format Output or gain scale FastFacts 7.4 Output or gain scaleHide or Show HIT curves To change the averaging frequenciesFastFacts 7.7 Ansi test frequencies HIT calibration facts FastFacts 7.8 HIT calibration factsFastFacts 7.9 Calibration of HIT reference microphone Calibration check for coupler microphone FastFacts 7.10 Calibration check for coupler microphoneCoupling the hearing instrument Positioning the hearing instrument FastFacts 7.12 Positioning the hearing instrumentAnsi S3.22 Hearing Aid Tests FastFacts 8.2 Ansi S3.22-1996 factsAnsi S3.22-2003 facts Turn the instrument onFastFacts 8.4 Ansi 1996 Linear and AGC tests Ansi 2003 Linear and AGC tests FastFacts 8.5 Ansi 2003 Linear and AGC testsAnsi test results FastFacts 8.6 Ansi test resultsAnsi input-output curves FastFacts 8.7 Ansi input-output curvesAnsi telecoil terminology FastFacts 8.8 Ansi telecoil terminologyAnsi telephone simulator Tmfs test FastFacts 8.9 Ansi telephone simulator Tmfs testTelecoil test results FastFacts 8.10 Telecoil test resultsOther Hearing Instrument Tests Turn the hearing instrument onFastFacts 9.2 Harmonic distortion Multicurve procedure FastFacts 9.3 Multicurve procedure Multicurve resultsFastFacts 9.4 Multicurve results FastFacts 9.6 Battery drain test Spectral analysis in MulticurveManual control procedure FastFacts 9.8 Sound level meter using manual controlReal-Ear Measurement Setup FastFacts 10.2 REM calibration factsCalibration of REM probe microphone FastFacts 10.3 Calibration of REM probe microphoneCalibration check for probe module Max TM SPL setup FastFacts 10.5 Max TM SPL setup 10.6 ABR nHL to eHL setupFastFacts 10.6 ABR nHL to eHL setup Positioning the client FastFacts 10.8 Positioning the probe tubeREM Screen Setup FastFacts 11.3 Graph, table or 2cc target formatREM Manual Control SPL or HL scaleFastFacts 11.4 SPL or HL scale Hide or show REM curves FastFacts 11.5 Hide or show REM curvesFastFacts 12.3 Sound level meter using REM probe Manual control measurementsSensory Loss Simulator Sensory loss simulator descriptionFastFacts 13.2 Sensory loss simulator operation Occlusion Effect Test Occlussion effect measurementTurn the hearing aid OFF FastFacts 14.1 Occlusion effect measurementRecd real-ear to coupler difference FastFacts 15.2 Recd factsRecd coupler response FastFacts 15.3 Recd coupler responseRecd real-ear response Allow the foam tip to fully expand in the earFastFacts 15.4 Recd real-ear response Recd results FastFacts 15.5 Recd resultsInsertion Gain FastFacts 16.1 Insertion gain Insertion gain in SPLFastFacts 16.2 Insertion gain in SPL Insertion gain in HL FastFacts 16.3 Insertion gain in HLAudiometric data entry To enter data from a barcode see 3.3 Barcode data inputTo enter assessment data and parameters manually FastFacts 16.4 Audiometric data entryReur measurement procedure FastFacts 16.5 Reur measurement procedureRear measurement procedure FastFacts 16.6 Rear measurement procedureSII calculation in Insertion gain FastFacts 16.7 SII calculation in Insertion gainSpeechmap FastFacts 17.1 Speechmap 17.2 Speechmap factsFastFacts 17.2 Speechmap facts DSL 5.0 in Speechmap FastFacts 17.3 DSL 5.0 in SpeechmapDSL 5.0 changes FastFacts 17.4 DSL 5.0 changes NAL-NL1 in SpeechmapFastFacts 17.5 NAL-NL1 in Speechmap Using Speechmap FastFacts 17.6 Using SpeechmapTo enter audiometric data, see 18.2 Assessment data entry 0611 RM500SL User’s Guide Version REM or S-REM mode FastFacts 17.9 REM or S-REM mode17.10SII calculation in Speechmap FastFacts 17.10 SII calculation in SpeechmapSpeechmap Fitting Procedures To enter assessment data manuallyFastFacts 18.2 Assessment data entry Assessment data choices FastFacts 18.3 Assessment data choicesFrom 18.3 Assessment data choices FastFacts 18.4 Assessment data choicesFitting to targets for soft speech FastFacts 18.5 Fitting to targets for soft speechFitting to targets for loud sounds FastFacts 18.6 Fitting to targets for loud soundsFitting to targets for mid-level speech FastFacts 18.8 Open fittings in SpeechmapFM fitting and verification FastFacts 18.9 FM fitting and verificationSpeechmap Technical Details FastFacts 19.2 Speechmap stimuliStimulus levels FastFacts 19.3 Stimulus levelsMicrophone location effects Microphone Location Effects FastFacts 19.4 Microphone location effectsSpeech signal analysis FastFacts 19.5 Speech signal analysisTroubleshooting FastFacts 20.1 Troubleshooting Self test failuresFastFacts 20.2 Self test failures FastFacts 20.4 HIT curves inconsistent No HIT reference mic. detected FastFacts 20.7 No HIT reference mic. detectedInvalid HIT calibration Invalid HIT Calibration FastFacts 20.10 Invalid REM calibration20.11REM speaker overdriven FastFacts 20.12 Barcode scanner malfunctionTechnical Specifications Storage & TransportationGeneral HIT ChamberGlossary Page Page Page References Page Page 0611 RM500SL User’s Guide Version Verifit and RM500SL Test Signals and Analysis Test signalsIntroduction Broad-band signals Loud Vocal Effort Effect re nominal band SPL Analysis of broad-band signals Pink noise signal analysisVerifit / RM500SL Speechmap 07/05/06 Example of speech envelope and Ltass 07/05/06 Ltass for Speechmap speech signals at average vocal effort Ltass Dynamic