HP RM500SL manual Other Hearing Instrument Tests, Turn the hearing instrument on

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9Other Hearing Instrument Tests

9.1Section overview

In addition to the tests of ANSI S3.22, the RM500SL provides the following:

Distortion: Harmonic distortion at 2nd or 3rd harmonics and 2nd plus 3rd with input levels varying from 60 – 90 dB SPL.

Multicurve: 1 – 4 curves of coupler SPL or coupler gain for swept tones or pink noise in 1/12th octaves at selected input SPL of 0 or 40 to 90 dB in 5 dB steps. Can be used as a 1/12th octave spectrum analyzer by setting stimulus to 0 dB.

Battery drain: A 10 second test of battery current drain with no acoustic input, a 1 kHz 65 dB input SPL, and an average for 90 dB input SPL at the HFA or SPA frequencies selected in Setup. Optional battery pills are required.

Manual control: Coupler and HIT reference mic. SPL at selected 1/12th octave frequencies and stimulus SPL of 0 and 40 – 90 dB in 5 dB steps. Can be used as a dual channel sound level meter with 1/12th octave, A and C filters.

This section covers the following topics:

9.2: Harmonic distortion	9.6: Battery drain
9.3: Multicurve procedure	9.7: Manual control procedure
9.4: Multicurve results	9.8: Sound level meter using manual control
9.5: Spectral analysis in Multicurve

FastFacts 9.1: Other hearing instrument tests

9.2Harmonic distortion

This test measures harmonic distortion at 2nd or 3rd harmonics with input levels varying from 60 – 90 dB SPL. It also presents the sum of 2nd and 3rd harmonics as total harmonic distortion (THD). For hearing aids, this differs little from true THD.

1)Press <Tests>, then highlight and <PICK> [Distortion].

2)Refer to 7.11: Coupling the hearing instrument, 7.12: Positioning the hearing

instrument and 2.5: Battery pill use and care to prepare the instrument for testing.

3)Turn the hearing instrument ON.

4)Highlight and <Pick> [Start test].

5)Highlight and <PICK> [Harmonics], then highlight and <PICK> THD, 2nd or 3rd from the drop-down list.

6)Highlight and <PICK> [Input], then highlight and <PICK> the desired input level (60 – 90 dB SPL) from the drop-down list.

7)Press <Continue> to run the test. Distortion will be displayed at 1/3 octaves in graphic and in tabular form.

FastFacts 9.2: Harmonic distortion

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RM500SL User’s Guide Version 2.8

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Contents USER’S Guide Getting Started Table of ContentsGeneral Setup General OperationAnsi S3.22 Hearing Aid Tests Hearing Instrument Tests SetupOther Hearing Instrument Tests REM Manual Control Troubleshooting Speechmap Fitting ProceduresSpeechmap Technical Details Section overview About RM500SLHelp 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 CisprGetting Started FastFacts 2.1 Getting started Unpacking and connectingFastFacts 2.2 Unpacking and connecting Following topics are covered in this sectionMicrophone connection FastFacts 2.3 Microphone connectionMicrophone care Coupler microphone FastFacts 2.4 Microphone care Battery pill use and careFastFacts 2.5 Battery pill use and care Probe microphoneMouse, keyboard, barcode scanner FastFacts 2.6 Mouse, keyboard, barcode scannerFastFacts 2.7 External printer, auxiliary audio outputs General OperationExternal printer, auxiliary audio outputs Section overview This section covers the following topicsFunction Keypad Input device operationFastFacts 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 messagesFastFacts 4.2 Date and time setup General SetupFastFacts 4.1 General setup Date and time setup Software updatingFastFacts 4.3 Display settings Saving test setup Display settingsFastFacts 4.4 Saving test setup FastFacts 5.1 Networking Networking requirements NetworkingFastFacts 5.2 Networking requirements Networking setup FastFacts 5.3 Networking setupOn the RM500SL, see Single computer connectionFastFacts 5.4 Single computer connection Printing and Storing Results FastFacts 6.1 Printing and storing resultsTo load a new roll of paper Internal printer paper loadingFastFacts 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 fileFastFacts 7.3 Graph or table format Output or gain scale Hearing Instrument Tests SetupFastFacts 7.2 HIT a or B display Graph or table format FastFacts 7.4 Output or gain scaleTo change the averaging frequencies Hide or Show HIT curvesFastFacts 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 factsTurn the instrument on Ansi S3.22-2003 factsFastFacts 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 resultsTurn the hearing instrument on Other Hearing Instrument TestsFastFacts 9.2 Harmonic distortion FastFacts 9.3 Multicurve procedure Multicurve results Multicurve procedureFastFacts 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 FastFacts 10.5 Max TM SPL setup 10.6 ABR nHL to eHL setup Max TM SPL 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 formatFastFacts 11.4 SPL or HL scale Hide or show REM curves REM Manual ControlSPL or HL scale FastFacts 11.5 Hide or show REM curvesFastFacts 12.3 Sound level meter using REM probe Manual control measurementsSensory loss simulator description Sensory Loss SimulatorFastFacts 13.2 Sensory loss simulator operation Turn the hearing aid OFF Occlusion Effect TestOcclussion effect measurement FastFacts 14.1 Occlusion effect measurementRecd real-ear to coupler difference FastFacts 15.2 Recd factsRecd coupler response FastFacts 15.3 Recd coupler responseAllow the foam tip to fully expand in the ear Recd real-ear responseFastFacts 15.4 Recd real-ear response Recd results FastFacts 15.5 Recd resultsFastFacts 16.1 Insertion gain Insertion gain in SPL Insertion GainFastFacts 16.2 Insertion gain in SPL Insertion gain in HL FastFacts 16.3 Insertion gain in HLTo enter assessment data and parameters manually Audiometric data entryTo enter data from a barcode see 3.3 Barcode data input 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 gainFastFacts 17.1 Speechmap 17.2 Speechmap facts SpeechmapFastFacts 17.2 Speechmap facts DSL 5.0 in Speechmap FastFacts 17.3 DSL 5.0 in SpeechmapFastFacts 17.4 DSL 5.0 changes NAL-NL1 in Speechmap DSL 5.0 changesFastFacts 17.5 NAL-NL1 in Speechmap FastFacts 17.6 Using Speechmap 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 SpeechmapTo enter assessment data manually Speechmap Fitting ProceduresFastFacts 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 analysisFastFacts 20.1 Troubleshooting Self test failures TroubleshootingFastFacts 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 malfunctionGeneral Technical SpecificationsStorage & Transportation HIT ChamberGlossary Page Page Page References Page Page 0611 RM500SL User’s Guide Version Test signals Verifit and RM500SL Test Signals and AnalysisIntroduction 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