Frye FONIX FP40D User Manual

FONIX® FP40/FP40D PORTABLE HEARING AID ANALYZEROPERATOR’S MANUALSoftware Version 3.70 © September 2005 Frye Electronics, Inc. Rev. Jun. 04, 2007

2 FONIX FP40 Portable Hearing Aid Analyzer Also in 1994, we introduced the FP40-D desk model analyzer. This unit is always equipped with the real e

92 FONIX FP40 Portable Hearing Aid Analyzer 5.4.3 Viewing the SPL screenSee Figure 5.4.3 for a picture of the SPL testing screen.1. Curve box con

Real-Ear Measurements 93 2. Set up the client, insert the probe tube, and level the sound field speaker as described in Section 5.1.3. Insert th

94 FONIX FP40 Portable Hearing Aid Analyzer Figure 5.4.4—SPL screen displayed on an external monitor5.5 Audibility Index (AI)The Audibility Index

Real-Ear Measurements 95 5.5.1 Viewing the AI displaySee Figure 5.5.1 for a picture of the Audibility Index display.1. dB HL graph for unaided a

96 FONIX FP40 Portable Hearing Aid Analyzer 13. Output limit status14. Selected ear15. Graph containing unaided and aided gain response5.5.2 Perfo

Real-Ear Measurements 97 5.6.1.1 To perform the coupler measurementThe coupler measurement part of the RECD is saved into the analyzer’s permanen

98 FONIX FP40 Portable Hearing Aid Analyzer 8. Plug a 50-ohm insert earphone into the external speaker jack on the back of the FP40. An adapter ma

Real-Ear Measurements 99 3AINSERTEARPHONELapel clipMicrophone jackExternal speaker jackProbe micProbe micFoam eartip3AINSERTEARPHONE3AINSERTEARPHO

100 FONIX FP40 Portable Hearing Aid Analyzer Figure 5.6.1.2B—Measured RECD5.6.2 Performing coupler measurements to a DSL target1. Enter your clie

Real-Ear Measurements 101 Figure 5.6.2A—Coupler gain measurement with a DSL target11. Press F5 to enter SSPL MODE. You should see a series of star

Introduction 3 The use of the Composite or Digital Speech signals can uncover the presence of intermodulation distortion in a hearing aid. Intermo

102 FONIX FP40 Portable Hearing Aid Analyzer If the FP40 has the OES Option, it is also possible to make a prescription that uses the modified Zwis

Real-Ear Measurements 103 5.7.2 Taking the FOG measurement1. Follow the instructions found in Section 5.2 to generate a real-ear target.2. Pres

104 FONIX FP40 Portable Hearing Aid Analyzer 7. Age of client.8. Instructions for performing the SSPL 90 measurement.Note: Once a measurement has

Real-Ear Measurements 105 5.7.5 Checking an aid against a prescriptionThis procedure allows the operator to reenter data from the client’s initia

106 FONIX FP40 Portable Hearing Aid Analyzer 5.7.6 Accounting for venting effectsYou can make 2-cc targets more accurate by modifying the target t

Real-Ear Measurements 107 5.8 MiscellaneousThis section describes a few real-ear features accessible from the Setup Menu.5.8.1 Single frequency

108 FONIX FP40 Portable Hearing Aid Analyzer 5.8.3 Reset LevelThe reset level is the sound pressure level that the analyzer automatically returns

Real-Ear Measurements 109 5.9 Body, CROS, and BI-CROS aidsWhen using the FP40 probe with a Body aid, CROS, or BI-CROS aid, we suggest the followi

110 FONIX FP40 Portable Hearing Aid Analyzer 5.9.2 Testing CROS and BICROS aidsFour Goals: 5.9.2.1 Measure the head baffle effect 5.9.2.2 Meas

Real-Ear Measurements 111 5.9.2.2 How Well the Aid Overcomes the Head-Baffle EffectCROSA. Unaided—Measurement of “good” ear canal (baffled by hea

4 FONIX FP40 Portable Hearing Aid Analyzer 1.3.5 ID OptionThe ID Option personalizes the printout strips with the owner’s name and address or phon

112 FONIX FP40 Portable Hearing Aid Analyzer The difference curve, labeled “Insertion Gain” on the screen, shows the benefit of adding the second m

Real-Ear Measurements 113 B. Aided—Measurement of “better” earSame setup as A, except…• Complete aid in place in better ear and set at use gain•

114 FONIX FP40 Portable Hearing Aid Analyzer 5.10 FM SystemsFor users who test FM Systems, a comprehensive guidebook is available free of charge.

Real-Ear Measurements 115 9. Press START/STOP to start the measurement. While the measurement is running, you may want to adjust the angle of the

Spectrum Analysis 117 Chapter 6: Spectrum Analysis6.1 Spectrum ModeThis mode is only available on FP40 instruments that have the Real-Time/Composit

118 FONIX FP40 Portable Hearing Aid Analyzer 6. Use F3 to select AIDED 1.7. Place the hearing aid in the ear. The aid should be turned off.8.

Spectrum Analysis 119 APPLICATION 3: REAL EAR AIDED RESPONSE (REAR) IN SPL USING AN EXTERNAL SOUND SOURCE. This application is similar to the Insert

Telecoil Testing 121 Chapter 7: Telecoil TestingTelecoil testing is available on serial number 940000 and above, manufactured in September, 1994 and

Introduction 5 HA-1 2-cc Coupler Dimensions per requirements of ANSI S3.7 for testing in-the-ear aids.HA-2 2-cc Coupler Dimensions per requirement

122 FONIX FP40 Portable Hearing Aid Analyzer 7. Press F1 to return to the Main Coupler screen.8. Press F2 to turn ON the telecoil feature.9. Ori

Telecoil Testing 123 4. Use the AMPLITUDE and FREQUENCY knobs to select MAIN F2 under FUNCTION KEY DEFIN.5. Press START/STOP repeatedly to select T

124 FONIX FP40 Portable Hearing Aid Analyzer 7.4 Testing1. Use the amplitude knob to increase the level of the magnetic field. If you are using t

Specifications 125 Appendix A: SpecificationsSINE SIGNALFrequencies 1/12 octave frequencies from 200 to 8000 Hz, closest 100 Hz,Normal Sweep w

126 FONIX FP40 Portable Hearing Aid Analyzer Tolerance +/- 0.01V, no load. Battery Type Selection Under software control from front panel, bu

Specifications 127 Auto Shutdown General shutdown after no operation of controls for 15 minutes (battery operation only).Battery Charger Buil

128 FONIX FP40 Portable Hearing Aid Analyzer PHYSICAL DESCRIPTIONDimensions 20.125” x 14.750” x 6.5” (50,5 x 36,9 x 16,25 cm) (with lid on case).

Calibration 129 Appendix B: CalibrationCalibrationYour new instrument has been calibrated at the factory. However, from time to time, you will w

130 FONIX FP40 Portable Hearing Aid Analyzer Calibrating the Probe Microphone1. Place the probe calibration adapter in the 1” to 14 mm adapter as

Calibration 131 7. PUSH F6 COMPEN (compensate) Probe. When the signal stops, the probe has been compensated and the compensation has been s

6 FONIX FP40 Portable Hearing Aid Analyzer FM40 Microphone Provided if the Real-Ear Option is not ordered.Battery Pills (With 12" [30 cm] cabl

History of Changes in the FP40 133 Appendix C: History of ChangesVERSION 1.0 (ORIGINAL RELEASE 3/90)VERSION 1.2 (5/90)Added: JIS Standard.VERSIO

Custom RECD Test 135 135 Appendix D: Custom RECD TestThere are two methods of getting Custom RECD measurements with the FP40 using the Probe Option

136 FONIX FP40 Hearing Aid Analyzer Part C: The RECD Calculation.On a separate sheet of paper, subtract the REAR measurements (Part B) from the 2cc c

The FONIX CIC Option 137 BackgroundZwislocki built an ear simulator coupler years ago to better approximate the real ear’s impedance vari-ation wi

138 FONIX FP40 Portable Hearing Aid Analyzer of the cavity between the hearing aid and the TM by moving the aid closer to it, we should expect to s

The FONIX CIC Option 139 dB Hz dB Hz dB Hz dB HzCIC CORRECTION FACTORS-8.7 200 -8.6 300 -8.7 400-8.75 500-9 600-8.9 700-8.8

Storage Compartments in the FP40 141 Appendix F: Storage Compartments in the FP40pull up hereAccessories are stored in three compartments located

Introduction 7 6040 Sound Chamber For control of external noises.Open Ear Coupler Non-standard coupler used for realistic testing of open ear hea

FONIX FP40 Portable Hearing Aid Analyzer 143Appendix G: Troubleshooting GuideThese are the most common problems that typically cause instrument fa

FONIX FP40 Portable Hearing Aid Analyzer 144 FONIX FP40 Portable Hearing Aid Analyzer3. A bump or peak in the low frequency response curve a.

FONIX FP40 Portable Hearing Aid Analyzer 145Appendix H: Probe SPL Mode DescriptionThe Target IG is converted to the Target SPL in the following st

FONIX FP40 Portable Hearing Aid Analyzer 146 FONIX FP40 Portable Hearing Aid AnalyzerTABLE 1 Average Real-Ear Unaided Response (REUR) FREQ GA

FONIX FP40 Portable Hearing Aid Analyzer 147TABLE 3 HL to real-ear SPL conversion table from ANSI S3.6-1989 Table G.1 FREQ (Hz) dB 250 19.0

FONIX FP40 Portable Hearing Aid Analyzer

FONIX FP40 Portable Hearing Aid Analyzer 149Appendix I: DSL Programming NotesNotes on the DSL® ProgrammingThe DSL® (Desired Sensation Level) sof

FONIX FP40 Portable Hearing Aid Analyzer 150channel instrument can meet those targets. If the compression ratio targets are very different in dif

FONIX FP40 Portable Hearing Aid Analyzer 151Appendix J: Battery Simulator ImpedancesFP40 Battery Simulator Settings Battery Size Battery Chemi

8 FONIX FP40 Portable Hearing Aid Analyzer Child Size Wedge Style Earhook Holds probe and reference microphones during real ear testing.Mounting Sl

Index 153 IndexAAccessories 6Optional 6Real-Ear 8Standard 5ACIC 55, 72Aided response 87ANSI 23, 43, 48ANSI S3.22-1987 55, 56, 58, 59, 60,

154 FONIX FP40 Portable Hearing Aid Analyzer HHarmonic distortion 45Hearing aid setup 39body aid 41eyeglass aid 41ITE/ITC/CIC 39History of cha

Index 155 Shutdown 16Single frequency response 44, 107Smoothing 107Sound chamber 7Sound level calibrator 6Source type 21, 42Speaker, swing ar

Introduction 9 Wedge Style Ear Hook Standard size Holds probe and reference microphones during real ear testing. Improved design eliminates need

10 FONIX FP40 Portable Hearing Aid Analyzer 1.5 Layout & ControlsThis section gives a short explanation of the layout of the FP40 analyzer, it

Introduction 11 1.5.2 Front Panel ButtonsThere are nine function key buttons in the top row of the FP40 front panel. The function of each of thes

12 FONIX FP40 Portable Hearing Aid Analyzer 1.5.4 Front Panel Knobs Amplitude Controls the amplitude or loudness of the test signal. Is also use

Introduction 13 1.5.6 Right Side Mounted Jack and ModuleLine input connector, IEC computer variety. Dual “snap in” fuse holder. Instrument will

14 FONIX FP40 Portable Hearing Aid Analyzer 1.6 FP40 SetupThis section describes how to set up the FP40 analyzer and prepare it for testing.1.6.1

Introduction 15 If desired, plug in an external video monitor to the connector labeled “Video Monitor” on the back of the FP40. You can also plug

16 FONIX FP40 Portable Hearing Aid Analyzer 1.7.3 Emergency ShutdownIf you find it impossible to turn off the instrument using the OPERATE button

General Operation 17 Chapter 2: General OperationThis chapter discusses the general operation of the FP40 analyzer. You will learn how to navigate

18 FONIX FP40 Portable Hearing Aid Analyzer 2.2.1 Making selections Notice the three columns in the General Setup Menu. Move the selection indi

General Operation 19 2.3 Using Function KeysThe front panel of the FP40 analyzer contains nine function keys, F1 through F9. These keys control th

20 FONIX FP40 Portable Hearing Aid Analyzer Figure 2.3.1—The Main Coupler ScreenNotice that F1, F4, and F5 are written in large letters. They take

General Operation 21 Note: If you toggle a function with SETUP F2 or SETUP F3, that function will remain in that set-ting until you explicitly chan

Table of ContentsChapter 1: Introduction1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22 FONIX FP40 Portable Hearing Aid Analyzer 2.4.1.1 Pure-tone settingsThere are several different settings available in the General Setup Menu for

General Operation 23 In determining the length of time needed for the proper measurement, a good rule is to use twice the published attack time of

24 FONIX FP40 Portable Hearing Aid Analyzer Digital Speech ANSI uses the same speech spectrum as the Composite signal. This speech spectrum, taken

General Operation 25 This type of distortion is only apparent when a composite signal source is used because pure-tone sweeps do not present more t

26 FONIX FP40 Portable Hearing Aid Analyzer 2.5 Display ModeAlthough the FP40 comes standard with an LCD screen, it is easy to hook up an external

General Operation 27 To turn on the battery current drain measurement in the Main Coupler Screen:1. Press F1, MENU, from the Main Coupler Screen.2.

28 FONIX FP40 Portable Hearing Aid Analyzer 2.7 Using the DATA buttonAlthough it’s usually more useful to display test results in the familiar gra

General Operation 29 To use an external sound chamber or an external speaker, plug it into the jack labeled “external speaker” on the back of the F

30 FONIX FP40 Portable Hearing Aid Analyzer • If the print head is up, you will see the message PLEASE PUSH LEVER NEXT TO THE PRINTER. To correct

General Operation 31 the External Printer Package from Frye Electronics containing a custom cable (PN 119-0312-00), a series-to-parallel converter,

2.3.2 Customizing the function keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202.4 Source Types . . . . . . . . . . .

32 FONIX FP40 Portable Hearing Aid Analyzer 2.10 The Opening ScreenThe Opening Screen of the FP40 (Figure 2.10) contains some useful information i

General Operation 33 You may still be able to operate when the gauge shows empty, but you are on reserve. Battery oper-ation shuts down when the ba

Coupler Measurements 35 Chapter 3: Coupler MeasurementsThe Main Coupler Screen is the first operational screen you encounter when using the FP40.

36 FONIX FP40 Portable Hearing Aid Analyzer 3.1.2 Viewing a Composite displayFigure 3.1.2—Composite coupler screen1. Display type: dB GAIN or dB

Coupler Measurements 37 altered since the analyzer was last leveled, invalidating the leveling. When in doubt, level the sound chamber again.3.2.1

38 FONIX FP40 Portable Hearing Aid Analyzer 1. Set up the aid for testing as described in Section 3.3. If you are using a battery pill for test-in

Coupler Measurements 39 3.3.1 Setting up a BTE1. Adjust the tone and gain controls of the aid to the desired positions. If desired, insert a batt

40 FONIX FP40 Portable Hearing Aid Analyzer 3. Align the sound opening of the aid with the hole at the conical end of the coupler. Look through t

Coupler Measurements 41 6. Slowly insert the microphone into the coupler. You may feel an initial resis-tance when the mic reaches the O-ring. Co

3.4.6 Viewing harmonic distortion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453.4.7 Viewing battery current drain. .

42 FONIX FP40 Portable Hearing Aid Analyzer 3.4 Frequency responsesThe Main Coupler Screen lets you take the frequency response of the hearing aid

Coupler Measurements 43 Figure 3.4.1—Selecting a pure-tone sweepTo select a Composite/Digital Speech source:1. Press F1—MENU to enter the General

44 FONIX FP40 Portable Hearing Aid Analyzer 3.4.3 Viewing multiple measurementsIt’s often useful to view several different frequencies responses t

Coupler Measurements 45 2. Press F1 to enter the General Setup Menu.3. Select SOURCE with the AMPLITUDE and FREQUENCY knobs.4. Press START/STOP

46 FONIX FP40 Portable Hearing Aid Analyzer 3. Use the FREQUENCY and AMPLITUDE knobs to select DISTORTION under PURE-TONE SETTINGS.4. Press START

Coupler Measurements 47 • You must position the reference microphone properly. If you don’t have the reference micro-phone positioned next to the

48 FONIX FP40 Portable Hearing Aid Analyzer 3.5.1 Testing with Digital SpeechTo test digital aids with noise suppression, we have taken our standa

Coupler Measurements 49 To use the Composite signal to test high end digital aids, you first need to figure out how long you can present the signal

50 FONIX FP40 Portable Hearing Aid Analyzer 3.6.1 Preparing for the measurement1. Set up your analyzer so that the speaker is in the upright pos

Coupler Measurements 51 5. Use the AMPLITUDE knob to select an appropriate source level. Typically this measurement should be done so that it is

Chapter 5: Real-Ear Measurements5.1 Preparation for Real-Ear Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 735.1.1

52 FONIX FP40 Portable Hearing Aid Analyzer 6. Press START/STOP once the measurement has stabilized. Compare the reverse measurement to the forwa

Coupler Measurements 53 6. Press F2 or F3 (selected in step 3) to turn the CIC correction factors ON.7. Test as usual. See Section 3.4.2.See Figu

54 FONIX FP40 Portable Hearing Aid Analyzer TYPE OF AID COUPLER COMMENT ITE, ITC MZ-1 BTE, or MZ-1 With custom earmold attached. (NOTE:

Automated Test Sequences 55 Chapter 4: Automated Test SequencesThere are several different automated test sequences available on the FP40 analyze

56 FONIX FP40 Portable Hearing Aid Analyzer Here are the major differences between ANSI 03 and ANSI 96:• When you set up an AGC aid for an ANSI 03

Automated Test Sequences 57 To change the ANSI 03 settings:1. From the ANSI 03 screen, press F1 to enter the General Setup Menu.2. Use the AMPLI

58 FONIX FP40 Portable Hearing Aid Analyzer 4.1.3 Running the test sequence1. Level the sound chamber if necessary. See Section 3.2 for details.2

Automated Test Sequences 59 8. SPA/HFA FOG: Three frequency average of a full-on gain measurement at 50 dB SPL9. REFTG TARGET and MEASURED: The

60 FONIX FP40 Portable Hearing Aid Analyzer • Set the aid for the widest frequency response range.• Set AGC aids to achieve greatest possible com

Automated Test Sequences 61 9. Use F5 to turn ON or OFF the telecoil measurement. The ANSI 96 telecoil measurement requires the Telewand.10. Pres

5.8 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1075.8.1 Single frequency

62 FONIX FP40 Portable Hearing Aid Analyzer 4.2.4 Viewing the resultsSee Figure 4.2.4 for an example of an ANSI 96 test sequence (including the te

Automated Test Sequences 63 4.3 ANSI S3.22-1987The ANSI S3.22-1987 standard is an older version of the ANSI S3.22-1996 standard, discussed in Sec

64 FONIX FP40 Portable Hearing Aid Analyzer 5. Press F7 to select the battery type used in the measurements.6. Press F8 to select whether or not

Automated Test Sequences 65 5. MAX: Maximum frequency response measured and the frequency at which it occurred6. SPA/HFA SSPL90: Three frequency

66 FONIX FP40 Portable Hearing Aid Analyzer 4.4.1 Setting up for the testFollow the instructions found in Section 4.2.1 for instructions on settin

Automated Test Sequences 67 4.4.3 Viewing the resultsSee Figure 4.4.3 for an an example of ANSI 92 results.1. NSPL90: RMS of Composite signal re

68 FONIX FP40 Portable Hearing Aid Analyzer Follow the instructions from Section 3.3 to set up the aid in the test box for testing.4.5.2 Setting u

Automated Test Sequences 69 4.5.3 Running the test sequence1. Level the sound chamber if necessary. See Section 3.2 for details.2. Set up the a

Figure 4.5.4—IEC results4.6 ProfilerThe Profiler is an automated test sequence designed to tell you all the important information about the hearing a

Automated Test Sequences 71 2. If you have chosen DSPA or DSPI in step 1, select the length of time each speech curve will be presented with F3.3

viiiIf you are located in the European Union, please report all safety-related concerns to our autho-rized representative:Siemens Hearing InstrumentsA

72 FONIX FP40 Portable Hearing Aid Analyzer Figure 4.6.3—Profiler results4.7 ACICThe ACIC test sequence is the ANSI 87 test sequence with CIC corr

Real-Ear Measurements 73 Chapter 5: Real-Ear MeasurementsThe Probe Option of the FONIX FP40 allows you to test hearing aids in the client’s ear, a

74 FONIX FP40 Portable Hearing Aid Analyzer Plug in the monitor headset if you want to be able to “listen in” on the sound received in the client’s

Real-Ear Measurements 75 speaker postrecessedchannelspeaker jackFigure 5.1.1.2B—Upright sound field speakerNote: Do not close the chamber while it

76 FONIX FP40 Portable Hearing Aid Analyzer 5.1.1.3 To set up an external sound field speakerIf you have a permanent location for your analyzer, y

Real-Ear Measurements 77 Top ViewSpeaker(45 degrees)12"Reference MicProbe Mic12"Reference MicProbe MicFront ViewSpeaker(45 degrees)Figur

78 FONIX FP40 Portable Hearing Aid Analyzer 5.1.2.3 To insert the probe tubeThere are several different methods used for properly inserting the pr

Real-Ear Measurements 79 Figure 5.1.2.3B – Unaided response with correct insertion of the probe tube5.1.2.4 To level the sound fieldLeveling is a

80 FONIX FP40 Portable Hearing Aid Analyzer Figure 5.1.2.4—Leveling the sound field speaker5.2 The Target ScreenThe Target screen is used to enter

Real-Ear Measurements 81 WARNING:Choose OUTPUT LIMITING carefully (see procedure below). You do not want to damage your client’s hearing or cause

Introduction 1 Chapter 1: Introduction1.1 Description Hearing aid analyzers are designed to give the user accurate information on how much amplif

82 FONIX FP40 Portable Hearing Aid Analyzer SANITATION NOTICEDO NOT REUSE PROBE TUBES. Use a new probe tube for each ear to prevent the pos-sible s

Real-Ear Measurements 83 Figure 5.2.1—The Target screen1. Insertion gain target graphical display.2. Fitting rule used in generation of the targ

84 FONIX FP40 Portable Hearing Aid Analyzer 6. Use the FREQUENCY and AMPLITUDE knobs to input the hearing threshold levels for the selected ear. T

Real-Ear Measurements 85 5.2.4 Creating your own targetAdvanced users may want to be able to input their own targets, without applying any partic

86 FONIX FP40 Portable Hearing Aid Analyzer 5.3.1 Viewing the Insertion Gain screenHere is an picture of the Insertion Gain screen.1. Insertion g

Real-Ear Measurements 87 4. Select the desired source with F7. Use either NORM (for a pure-tone sweep), or COMP (for a composite signal).5. Use

88 FONIX FP40 Portable Hearing Aid Analyzer 6. Press F3 to select Aided 2, and repeat steps 3-5 to perform another measurement. A third aided resp

Real-Ear Measurements 89 5.3.5 Testing Open Fit Hearing Aids Open fit hearing aids have been known to interfere with the reference microphone mea

90 FONIX FP40 Portable Hearing Aid Analyzer 5.4 SPL Measurements (including real-ear DSL)The real-ear SPL screen permits the user to view all the m

Real-Ear Measurements 91 5.4.2 Understanding the specifics of DSLThe Desired Sensation Level (DSL) method is a hearing aid selection and fitting