HP RM500SL manual Positioning the client, FastFacts 10.8 Positioning the probe tube

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10.7 Positioning the client

Sound reflections from nearby surfaces (including the operator) can cause large measurement errors. Room noise can increase test time, cause errors and alter the operation of the hearing instrument being evaluated.

1)Choose a quiet location and position the client and the real-ear speaker at least 1.5 m (5 feet) away from any hard surfaces.

2)The speaker mounted in the lid of the test chamber is used for real-ear measurements. It is normally used with the lid in a near-vertical position but the elevation may be changed by opening the lid past vertical.

3)Position the client directly in front of, and facing, the front REM speaker at a distance of 18” to 36” (45 to 90 cm) from the center of the head. The speaker and the head should be at approximately the same level.

FastFacts 10.7: Positioning the client 10.8 Positioning the probe tube

1)Use an otoscope to ensure there is no ear canal obstruction (e.g. cerumen) and to get a sense of ear canal length.

2)Install a new probe tube on the probe module. Set the black marker ring approximately 28 mm from end of probe tube for adult females, approximately 30 mm from end of probe tube for adult males and approximately 20-25 mm from end of probe tube for children. These positions may be modified based on the otoscopic examination. (Tip - the probe module body is 28 mm long.)

3)Hang the probe module on the ear, as

shown. The reference microphone should face outwards.

4)Adjust the blue cord until the probe module is snug against the head, directly below the earlobe (cheek level). To facilitate this, clip the probe module cable to clothing on the side opposite the test ear and draw the cable snug.

5)Hold the front blue cord so that it passes behind the ear canal entrance and pass the end of the probe tube in front of the blue cord and into the ear canal.

6)Carefully slide the probe tube into the ear canal until the marker ring approaches the intertragal notch. Then let the front blue cord move forward to hold the probe tube in place. Use an otoscope to verify that the tube is 2 to 5 mm from the eardrum.

FastFacts 10.8: Positioning the probe tube

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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 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 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 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 messagesFastFacts 4.2 Date and time setup General SetupFastFacts 4.1 General setup 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 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 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 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 Sensory loss simulator descriptionFastFacts 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 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 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 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 malfunctionGeneral Technical SpecificationsStorage & Transportation 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