HP RM500SL manual

Page 97

REUG, Real-Ear Unaided Gain , difference, in dB as a function of frequency, between the SPL (or BSPL) at a specified measurement point in the ear canal and the SPL (or BSPL) at a field reference point, for a specified sound field, with the ear unoccluded (ANSI S3.46).

REUR, Real-Ear Unaided Response, SPL (or BSPL), as a function of frequency, at a specified measurement point in the ear canal, for a specified sound field, with the ear canal unoccluded (ANSI S3.46).

Reference microphone, microphone used to measure the stimulus level in the measurement process or to control it in the equalization process.

Release Time, the time required for HA output to fall to within +/-4dB of its steady-state level for an input step from 90 to 55dB SPL. (ANSI S3.22)

REM, Real-Ear Measurement.

RTG, Reference Test Gain, the HFA gain for a 60 dB input SPL with the gain control at RTS (ANSI S3.22).

Reference, Sound-field, the calibration point of a sound-field measurement.

RTS, Reference Test Setting of the gain control, for a 60 dB input SPL, the setting of the gain control required to produce an HFA gain within 1.5 dB of the HFA-OSPL90 minus 17 dB. If the full-on HFA gain is less than the HFA-OSPL90 minus 17 dB, the RTS is the full-on setting of the gain control (ANSI S3.22).

RSETS, Relative Simulated Equivalent Telephone Sensitivity, difference in dB between the HFA- SPLITS (SPA-SPLITS) and the RTG plus 60 in the ‘M’ (microphone) mode. RSETS = HFA-SPLITS - (RTG+60)

Saturation, in a hearing aid, the limiting of output caused by the output circuitry and transducer reaching their maximum capability.

SPA, Special Purpose Average, the average of values in dB at three third octave frequencies separated by 2/3 of an octave (ANSI S3.22). See also HFA.

Spectrum, the BSPL as a function of frequency for a broad-band signal.

SII, Speech Intelligibility Index, a quantity calculated from measures of speech, noise and hearing threshold that is highly correlated with the intelligibility of speech (ANSI S3.5).

Speech Region, a statistical range of short-term spectra present in a speech passage. The short-term spectra are typically 120 - 130 millisecond averages in 1/3 octaves. The statistical range is typically from the 70th to the 99th percentile.

SPL, Sound Pressure Level, rms sound pressure relative to 20 uPa, expressed in decibels. SPL = 20log10 (rms sound pressure / 20uPa).

SPLITS, coupler SPL for an inductive telephone simulator, SPL developed in a 2cc coupler by a hearing aid with the gain control at the RTS when the input is the magnetic field generated by a TMFS (ANSI S3.22).

TMFS, Telephone magnetic-field simulator, a device for producing a magnetic field of consistent level and geometric shape when driven by a specified current (ANSI S3.22).

THD, Total Harmonic Distortion, the rms value of all harmonic components as a percentage of the rms value of the fundamental. If less than 20%, the rms value of the total signal may be used instead of the fundamental. For most hearing aids, the inclusion of harmonics above the third will not significantly alter the THD (ANSI S3.22).

Transducer, a device which transforms energy from one form to another. For example, a microphone or earphone.

UCL, Uncomfortable Listening Level, the level for a specified stimulus that is judged to be definitely uncomfortable.

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RM500SL User’s Guide Version 2.8

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Contents USER’S Guide General Setup Table of ContentsGetting Started 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 FastFacts 1.4 Warranty, trademarks, acknowledgements Warranty, Trademarks, AcknowledgementsCispr Electromagnetic Compatability EMCFastFacts 2.2 Unpacking and connecting FastFacts 2.1 Getting started Unpacking and connectingGetting Started Following topics are covered in this sectionFastFacts 2.3 Microphone connection Microphone connectionFastFacts 2.5 Battery pill use and care FastFacts 2.4 Microphone care Battery pill use and careMicrophone care Coupler microphone Probe microphoneFastFacts 2.6 Mouse, keyboard, barcode scanner Mouse, keyboard, barcode scannerExternal printer, auxiliary audio outputs General OperationFastFacts 2.7 External printer, auxiliary audio outputs Section overview This section covers the following topicsFunction Keypad Input device operationFastFacts 3.2 Input device operation FastFacts 3.3 Barcode data input Barcode data inputFastFacts 3.4 Keypad keys Keypad keys Function ButtonFastFacts 3.5 Menus, lists and buttons Menus, lists and buttons Setup Box List BoxScreen messages FastFacts 3.7 Program memory removal and replacementFastFacts 4.1 General setup Date and time setup General SetupFastFacts 4.2 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 FastFacts 5.3 Networking setup Networking setupOn the RM500SL, see Single computer connectionFastFacts 5.4 Single computer connection FastFacts 6.1 Printing and storing results Printing and Storing ResultsTo load a new roll of paper Internal printer paper loadingFastFacts 6.2 Internal printer paper loading Barcodes, headers and comments on printouts FastFacts 6.4 Local printer setupFastFacts 6.5 Printing to a USB memory stick Printing to a USB memory stickFastFacts 6.6 Network printer setup Network printer setupFastFacts 6.8 Data storage to a network file Printing to a network fileFastFacts 7.2 HIT a or B display Graph or table format Hearing Instrument Tests SetupFastFacts 7.3 Graph or table format Output or gain scale FastFacts 7.4 Output or gain scaleTo change the averaging frequencies Hide or Show HIT curvesFastFacts 7.7 Ansi test frequencies FastFacts 7.8 HIT calibration facts HIT calibration factsFastFacts 7.9 Calibration of HIT reference microphone FastFacts 7.10 Calibration check for coupler microphone Calibration check for coupler microphoneCoupling the hearing instrument FastFacts 7.12 Positioning the hearing instrument Positioning the hearing instrumentFastFacts 8.2 Ansi S3.22-1996 facts Ansi S3.22 Hearing Aid TestsTurn the instrument on Ansi S3.22-2003 factsFastFacts 8.4 Ansi 1996 Linear and AGC tests FastFacts 8.5 Ansi 2003 Linear and AGC tests Ansi 2003 Linear and AGC testsFastFacts 8.6 Ansi test results Ansi test resultsFastFacts 8.7 Ansi input-output curves Ansi input-output curvesFastFacts 8.8 Ansi telecoil terminology Ansi telecoil terminologyFastFacts 8.9 Ansi telephone simulator Tmfs test Ansi telephone simulator Tmfs testFastFacts 8.10 Telecoil test results 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 Spectral analysis in Multicurve FastFacts 9.6 Battery drain testFastFacts 9.8 Sound level meter using manual control Manual control procedureFastFacts 10.2 REM calibration facts Real-Ear Measurement SetupFastFacts 10.3 Calibration of REM probe microphone 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 FastFacts 10.8 Positioning the probe tube Positioning the clientFastFacts 11.3 Graph, table or 2cc target format REM Screen SetupSPL or HL scale REM Manual ControlFastFacts 11.4 SPL or HL scale Hide or show REM curves FastFacts 11.5 Hide or show REM curvesManual control measurements FastFacts 12.3 Sound level meter using REM probeSensory loss simulator description Sensory Loss SimulatorFastFacts 13.2 Sensory loss simulator operation Occlussion effect measurement Occlusion Effect TestTurn the hearing aid OFF FastFacts 14.1 Occlusion effect measurementFastFacts 15.2 Recd facts Recd real-ear to coupler differenceFastFacts 15.3 Recd coupler response Recd coupler responseAllow the foam tip to fully expand in the ear Recd real-ear responseFastFacts 15.4 Recd real-ear response FastFacts 15.5 Recd results Recd resultsFastFacts 16.1 Insertion gain Insertion gain in SPL Insertion GainFastFacts 16.2 Insertion gain in SPL FastFacts 16.3 Insertion gain in HL Insertion gain in HLTo enter data from a barcode see 3.3 Barcode data input Audiometric data entryTo enter assessment data and parameters manually FastFacts 16.4 Audiometric data entryFastFacts 16.5 Reur measurement procedure Reur measurement procedureFastFacts 16.6 Rear measurement procedure Rear measurement procedureFastFacts 16.7 SII calculation in Insertion gain SII calculation in Insertion gainFastFacts 17.1 Speechmap 17.2 Speechmap facts SpeechmapFastFacts 17.2 Speechmap facts FastFacts 17.3 DSL 5.0 in Speechmap 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 FastFacts 17.9 REM or S-REM mode REM or S-REM modeFastFacts 17.10 SII calculation in Speechmap 17.10SII calculation in SpeechmapTo enter assessment data manually Speechmap Fitting ProceduresFastFacts 18.2 Assessment data entry FastFacts 18.3 Assessment data choices Assessment data choicesFastFacts 18.4 Assessment data choices From 18.3 Assessment data choicesFastFacts 18.5 Fitting to targets for soft speech Fitting to targets for soft speechFastFacts 18.6 Fitting to targets for loud sounds Fitting to targets for loud soundsFastFacts 18.8 Open fittings in Speechmap Fitting to targets for mid-level speechFastFacts 18.9 FM fitting and verification FM fitting and verificationFastFacts 19.2 Speechmap stimuli Speechmap Technical DetailsFastFacts 19.3 Stimulus levels Stimulus levelsFastFacts 19.4 Microphone location effects Microphone location effects Microphone Location EffectsFastFacts 19.5 Speech signal analysis Speech signal analysisFastFacts 20.1 Troubleshooting Self test failures TroubleshootingFastFacts 20.2 Self test failures FastFacts 20.4 HIT curves inconsistent FastFacts 20.7 No HIT reference mic. detected No HIT reference mic. detectedFastFacts 20.10 Invalid REM calibration Invalid HIT calibration Invalid HIT CalibrationFastFacts 20.12 Barcode scanner malfunction 20.11REM speaker overdrivenStorage & Transportation Technical SpecificationsGeneral 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 Pink noise signal analysis Analysis of broad-band signalsVerifit / 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
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