FONIX FP35 Touch Operators Manual Ver 8.11 July 2016

Table of Contents

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Contents Chapter 1: An Overview of the FP35 Touch... 1 1.1 A Guide to Using this Manual... 2 1.2 Layout, Controls, & Safety... 2 1.2.1 Power LED and LCD display... 2 1.2.2 Front panel layout... 3 1.2.3 Rear Panel Layout... 4 1.2.4 Sound Chamber Connectors... 6 1.3 Accessories... 6 1.3.1 Standard Accessories ... 6 1.3.2 Real-Ear Option Accessories... 7 1.3.3 Optional accessories... 8 1.4 Optional Features for the FP35... 12 1.5 Setup ... 13 1.6 Safety... 14 1.7 Maintenance... 16 1.7.1 Servicing the Instrument ... 17 1.7.2 Cleaning the Instrument... 17 1.7.3 Warranty... 18

Chapter 2: General Operation... 19 2.1 Operation of Keys... 19 2.1.1 Using the Function Keys... 19 2.1.2 Using the Local Menus... 21 2.1.3 Using the Help Menus... 22 2.1.4 Using the [EXIT] and [RESET] keys... 23 2.1.5 Using the Touch Screen... 23 2.2 Opening Screen... 25 2.2.1 Entering the Opening Screen... 25 2.2.2 Opening Screen Display... 25 2.2.3 Switching Between Settings... 26 2.3 The Default Settings Menu... 26 2.3.1 Customizing Your Instrument Default Settings ... 27 2.3.2 Switching between Easy and Advanced User Levels... 27 2.3.3 Changing the use of [F1] in the Opening screen... 28 2.3.4 Setting the date and time ... 28 2.3.5 Changing the external monitor colors... 28 2.3.6 Explaining the Settings in the Main Default Settings Menu... 29 2.3.7 Explaining the Settings in the Advanced Menu... 31 2.4 Aid Types and Delay Times... 35 2.5 Source Types & Measurements ... 36 2.5.1 Understanding Pure-Tone Signals... 37 2.5.1.1 Delay Settings... 37

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FONIX FP35 Hearing Aid Analyzer

2.5.1.2 Harmonic Distortion... 37 2.5.1.3 Noise Reduction ... 38 2.5.1.4 Warble Rates... 38 2.5.1.5 Adjusting the Signal Skew... 39 2.5.1.6 Three-Frequency Averages... 39 2.5.2 Understanding Composite Signals... 40 2.5.2.1 Filter Type... 40 2.5.2.2 Intermodulation Distortion... 41 2.5.2.3 Noise Reduction... 44 2.5.3 Measuring RMS... 45 2.5.4 Measuring the RMS of the reference microphone... 47 2.5.5 Using the Earphone Jack... 48 2.5.6 Using Impulse Rejection... 48 2.5.7 Using an External Speaker or Sound Chamber... 49 2.5.8 Measuring Telecoil... 50 2.5.9 Changing the Microphone Selection... 51 2.6 Printing... 52 2.6.1 Choosing the Printer... 52 2.6.2 Adding a Label... 53 2.6.3 Changing the Thermal Paper (with the old moving head printer)... 54 2.6.4 Changing the Thermal Paper (with the fixed head printer)... 55 2.6.5 Fixing Paper Jams or Misfeeds ... 57 2.6.6 Minimizing Fading... 58 2.6.7. Using an External Printer... 58 2.7 Display & Data... 58 2.7.1 Data Display... 58 2.7.2 Curve ID Box... 60

Chapter 3: Coupler Measurements... 61 3.1 Coupler Multicurve Display... 61 3.2 Leveling the Sound Chamber... 62 3.2.1 Leveling ... 63 3.2.2 Saving the Leveling Information... 64 3.2.3 Changing the Leveling Source... 64 3.3 Hearing Aid Setup... 65 3.3.1 Setting up a BTE... 65 3.3.2 Setting up an ITE ... 66 3.3.3 Setting up a Body Aid... 67 3.4 Frequency Responses... 67 3.4.1 Running a Test Curve... 68 3.4.2 Running a Single Frequency Measurement... 70 3.5 Distortion Measurements... 70 3.5.1 Measuring Harmonic Distortion ... 70 3.5.2 Measuring Intermodulation Distortion ... 72 3.5.3 Performing an IM Distortion Sweep... 73

Table of Contents

3.5.4 Changing the Frequencies of an IM Distortion Sweep... 74 3.5.5 Turning on/off Impulse Rejection... 75 3.5.6 Using the Reference Microphone... 75 3.6 CIC Option... 75 3.7 OES Option... 77 3.8 Advanced Testing... 78 3.8.1 Testing Digital Hearing Aids... 78 3.8.2 Testing Directional Hearing Aids (FP35 with Real Ear option only)... 79 3.8.3 Testing with the Reference Microphone... 82 3.8.4 Reversing the Microphones... 83 3.8.5 Splitting the Microphones... 84 3.8.6 Changing the Signal Filters... 85 3.8.7 Running a Three-Frequency Average... 86 3.8.8 Measuring the Telecoil Response... 86 3.8.9 Measuring with an External Signal ... 89 3.8.10 Testing Frequency Shifting Hearing Aids... 90 3.8.11 1/3 Octave Analysis ... 91 3.9 Reference... 92 3.9.1 Defining the Function Keys... 93 3.9.2 Explaining the Menu Items ... 93

Chapter 4: Automated Test Sequences... 97 4.1 The ANSI Sequence ... 97 4.1.1 Viewing the ANSI 03 Display ... 98 4.1.2 Defining the Function Keys... 99 4.1.3 Leveling... 99 4.1.4 Switching between ANSI 96 and ANSI 03... 100 4.1.5 Setting up for ANSI testing ... 100 4.1.6 Running an ANSI Test ... 101 4.1.7 Testing Digital Hearing Aids... 102 4.1.8 Understanding Menu Items... 103 4.2 IEC Testing... 104 4.2.1 Viewing the IEC 05 Display... 104 4.2.2 Defining the Function Keys... 106 4.2.3 Setting Up the Hearing Aid for Testing with IEC 05... 106 4.2.4 Running an IEC 05 Test... 107 4.2.5 Measuring Telecoil... 107 4.2.6 Defining the Menu Items... 107 4.3 JIS Testing ... 109 4.3.1 Viewing the JIS Display... 109 4.3.2 Defining the Function Keys... 111 4.3.3 Setting Up the Hearing Aid for Testing ... 111 4.3.4 Running the JIS Test... 112 4.3.5 Defining the Menu Items... 112 4.4 ISI Testing ... 113

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FONIX FP35 Hearing Aid Analyzer

Chapter 5: Real-Ear Measurements... 117 5.1 Introduction... 117 5.1.1 Real-Ear Screens... 117 5.1.2 Navigation ... 117 5.2 Real-Ear Setup... 118 5.2.1 General Setup... 118 5.2.2 Internal Speaker Setup (for Sound Field Use)... 119 5.2.3 External Speaker Setup... 120 5.2.4 Placing the Probe Tube... 121 5.2.5 Placing the Sound Field Speaker... 122 5.2.6 Leveling the Sound Field Speaker ... 122 5.2.7 Testing Digital Aids... 124 5.2.8 Testing Body Aids... 124 5.3 Audiogram Entry Screen-Creating A Target... 124 5.3.1 Entering the Audiogram Screen... 125 5.3.2 Audiogram Display... 125 5.3.3 Entering Audiometric Information & Creating A Target... 126 5.3.4 Creating an NAL-NL1 Target... 126 5.3.5 Modifying a Target... 128 5.3.6 Measuring the Real-Ear to Coupler Difference... 128 5.3.6.1 Analyzer Setup for RECD... 128 5.3.6.2 Client Setup for RECD ... 129 5.3.6.3 Taking the RECD Measurement... 130 5.3.7 Measuring the Real-Ear to Dial Difference... 130 5.3.8 Measuring the Unaided measurement... 133 5.3.9 Starting a New Client... 135 5.3.10 Defining the Menu Items... 136 5.4 Insertion Gain Testing... 138 5.4.1 Measuring the Unaided Response... 139 5.4.2 Measuring the Aided Response... 140 5.4.3 Viewing Aided Gain as full screen ... 142 5.4.4 Automatic Testing... 143 5.4.5 Testing Directional Hearing Aids... 143 5.4.6 Testing Open Fit Hearing Aids ... 146 5.5 The Real-Ear SPL Screen... 147 5.5.1 The SPL Display... 147 5.5.2 Running an SPL Test... 148 5.5.3 Viewing Real-ear SPL Results in Full Screen... 149 5.5.4 Important Notes on SPL Testing... 150 5.5.4.1 Speech-Weighting Effects on Pure tones... 150 5.5.4.2 Target Formulas ... 150 5.5.4.3 1/3 Octave Analysis ... 151 5.5.5 Important Notes on DSL Testing... 152 5.6 Live Speech Testing... 153

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5.6.1 Using Speech as a Test Signal ... 153 5.6.2 Measuring the occlusion effect... 156 5.7 Miscellaneous Real-Ear Measurements... 157 5.7.1 Measuring a Single Frequency Response... 158 5.7.2 Measuring Harmonic Distortion... 158 5.7.3 Measuring Intermodulation Distortion... 159 5.7.3.1 To perform a static IM distortion test... 159 5.7.3.2 To perform an IM distortion sweep... 161 5.7.3.3 To change the frequencies used in the sweep... 162 5.7.4 Using the Reference Microphone... 162 5.7.5 Viewing Target Data... 163 5.7.6 Measuring the Telecoil Response... 164 5.8 Reference... 165 5.8.1 Viewing the Real-Ear Screens... 165 5.8.2 Viewing Results in Full Screen... 167 5.8.3 Defining the Menu Items... 168 5.9 CROS, and BICROS ... 172 5.9.1 Measuring the Head-Baffle Effect ... 173 5.9.2. Measuring the Overcoming of the Head-Baffle Effect ... 174 5.9.2.1 CROS... 174 5.9.2.2 BI-CROS... 174 5.9.3 Measuring Overall Insertion Gain ... 175 5.9.3.1 CROS... 175 5.9.3.2 BI-CROS... 175 5.9.4 Measuring Insertion Loss to the “Good” Ear (CROS) ... 176

Chapter 6: 2-CC Targets... 177 6.1 Target Creation... 178 6.2 The Coupler Target and Coupler EarSim Displays ... 179 6.2.1 Viewing the Coupler Target Screen... 179 6.2.2 Viewing the Coupler EarSim Screen... 181 6.2.3 Viewing Results in Full Screen... 182 6.3 Measurements & Adjustments... 183 6.3.1 Taking Basic Measurements... 184 6.3.2 Viewing Target Data ... 184 6.3.3 Tying the Target to a Measurement Curve... 185 6.4 Reference ... 186

Chapter 7: The Audiometer Option... 191 7.1 Introduction... 191 7.2 Equipment... 191 7.3 Setup... 191 7.3.1 Sound Field Speaker... 191 7.3.2 Insert Earphones... 194 7.4 Taking Audiometric Measurements ... 194

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FONIX FP35 Hearing Aid Analyzer

7.4.1 Measurements in HL ... 194 7.4.2 Measurements in SPL ... 194 7.4.3 Measurements in Gain... 195 7.5 Output Limitations... 195

Chapter 8: Spectrum Analysis... 197 8.1 Spectrum Analysis Measurements... 197 8.2 Using the Spectrum Analysis Mode... 197 8.3 Technical Details... 198

Appendix A: Specifications... 201 Appendix B: Software Upgrades... 205 Appendix C: Calibration... 211 Appendix D: Fitting Formula Tables... 223 Appendix E: SPL Conversions... 227 Appendix F: Digital Speech Technical Details... 231 Index... 233

Chapter 1

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An Overview of the FP35 Touch Welcome to the FONIX FP35 Analyzer! The FONIX FP35 provides quick, accurate information about how well a hearing aid works. It uses a graphical display or numerical table to show how much amplification the aid provides, which frequencies it amplifies, and how much distortion is creates. The FP35 analyzer uses a backlit touchscreen LCD with an adjustable contrast for its main display, and it has a thermal printer built in so that you can print hard copies of gathered data no matter where you are. The FP35 also has an external monitor option that allows the simultaneous display of the built-in LCD and an external monitor. Most computer monitors will work with this feature, although the FP35 display is only in two colors. There is also a parallel port on the back of all FP35 analyzers, allowing the use of an external printer. A microphone for performing coupler measurements is connected to the inside of the built-in sound chamber. A microphone set for perform real-ear measurements is connected to the front of the analyzer. The FP35 analyzer is meant to be used primarily by hearing health professionals who fit hearing aids on hearing-impaired adults and children throughout the world. Training in the use of the FP35 analyzer is provided by the FONIX distributor or, if purchased directly, by the Frye factory. Training materials are available on the Frye website www.frye.com. We recommend setting aside four hours for initial training on the FP35 analyzer. Indications for use The FONIX FP35 Hearing Aid Analyzer allows the user to test the characteristics of a hearing aid using coupler and optional real-ear measurements. These characteristics include: Frequency response, harmonic distortion, equivalent input noise, and compression. Coupler measurements are performed inside a sound chamber. Real-ear measurements are performed with a small probe microphone inside the patient’s ear against a choice of prescription targets. This manual provides detailed instructions on the measurement capabilities and user interface of the FONIX FP35.

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FONIX FP35 Hearing Aid Analyzer

1.1 A Guide to Using this Manual The FP35 is easy to use. You can begin testing right away, and, if you do happen to get stuck, the pop-up help menus will guide you through what to do next. In addition, this manual contains detailed instructions and information about all the different testing capabilities and options that the FP35 gives you. The FP35 Operator’s Manual follows a logical, sequential order and is meant to be read in order. If you come across a section that contains information you are already familiar with, skip to the next section. Notations are consistent throughout the manual. Key names are contained in brackets, for instance [START/STOP]. Selections and settings are written in all capitals without brackets, such as PURETONE. Screen names are capitalized, such as Coupler screen. The up-down arrow keys are represented by these symbols: [p q]. The rightleft arrow keys are represented by these symbols: [t u].

1.2 Layout, Controls, & Safety The basic layout of the FP35 analyzer and special information pertaining to safety regulations are described in this section.

1.2.1 Power LED and LCD display The FP35 uses a 1/4 VGA touchscreen LCD screen to display graphs and numerical data. An optional external monitor connection is also available. The FP35 analyzer is equipped with a screen saver that will turn off the display automatically if the FP35 is not used for a period of ten minutes or some other length of time specified by the user in the Default Settings Menu (see Section 2.3, The Default Settings Menu). To activate the screen after the screen saver has turned it off, press any key. The FP35 has only one LED. It is above the [OPERATE] key (see Figure 1.2.1). The LED can indicate several different things by its color and by how quickly it flashes. • Green (not flashing)-Normal operation • Green fast flash (every second)-Screen saver mode • Green slow flash (every three seconds)-Off, but the circuit continues to receive power • Red-Error condition; unit should not be used • Red & Green alternating-Software upload mode

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An Overview of the FP35 Touch

Figure 1.2.1-FP35 front panel

1.2.2 Front panel layout The front panel of the FP35 analyzer consists of 5 function keys, 4 arrow keys, and 9 other keys with varying operations. Together, these keys are used to control all the operations of the FP35 analyzer. Function Keys: There are five “function keys” located just below the FP35’s front panel, labeled [F1] through [F5]. The function of these keys change from screen to screen, according to the operation displayed. There are three basic uses of the function keys: • To navigate from screen to screen • To toggle a selection • To pop-up up a selection menu For example, in the Opening Screen, pressing [F3] will take you into the Coupler Multi-Curve screen where you can test an aid in the sound chamber. Other Keys: [MENU]

Enters and exits the menu relevant to the current screen.

[EXIT]

Exits the current screen, returning you to the a measurement screen or the Opening Screen. Unlike the [RESET] key, pressing [EXIT] does not erase any data.

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FONIX FP35 Hearing Aid Analyzer [NEXT] [BACK] Moves back and forth between screens that are in a sequences. Examples include menus and the real-ear measurement screens. [p q]

Moves the cursor up and down in a menu screen and in the Audiogram Entry screen. Adjusts the level of the source amplitude in a measurement screen.

[t u]

Cycles through available menu choices, adjusts the frequency selection in a single tone measurement, and adjusts the amplitude levels in an audiogram in the Audiogram Entry screen.

[START/STOP]

Starts or stops the current selected function.

[OPERATE]

Powers up and down the analyzer. When powered down, the LCD display is turned off and all data is cleared, but the main power is not turned off. The green LED will flash once every 3 seconds.

[RESET]

Interrupts any current running measurement and returns the FP35 to the Opening Screen. [RESET] will not clear leveling or calibration, but it will clear any data you have collected.

[HELP]

Pops up a help window containing instructions for the current screen.

[PRINT/FEED]

Prints the current screen when you press and release this key. Feeds the thermal paper when you press and hold this key.

Connector: The FP35 main board was revised in late October 2008 (the “-09 revision”). This added a new microphone connector on the front of the analyzer labeled “Mic” for the integrated real-ear microphone. The coupler microphone (and the old style real-ear microphone) is connected inside the sound chamber. Touch Screen: The FP35 Touch features a touch screen LCD that allows you to perform many actions using your finger or a stylus directly on the built-in display. See Section 2.1.5 for details.

1.2.3 Rear Panel Layout The rear panel layout contains most of the external connections for the FP35 analyzer. There have been three major versions of the FP35 rear panel. For the sake of this manual, we will refer to them as the “original” rear panel, the “-08” rear panel, and the “-09” rear panel.

VIDEO LINE IN SPEAKER

EARPHONE

CONTRAST

RS232

PRINTER

POWER

Figure 1.2.3A-The newest rear-panel, manufactured starting in November 2008. This revision added a “line-in” input as a 3.5mm jack.

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An Overview of the FP35 Touch

VIDEO SPEAKER

EARPHONE

CONTRAST

RS232

PRINTER

POWER

Figure 1.2.3B-The “08” rear-panel, manufactured between February 2007 and October 2008.

VIDEO

CONTRAST

EARPHONE SPEAKER

RS232

PRINTER

KEYBOARD

POWER

Figure 1.2.3C-The “original” rear-panel, manufactured before February 2007.

Video

Connects to an external monitor (optional).

Earphone

Connects an insert earphone to the FP35 in order to perform RECD or audiometric measurements. It can also be used to connect a Telewand or telecoil board for telecoil measurements.

Speaker

Connects an external sound field speaker or external sound chamber to the FP35 analyzer. Can also be used to connect an external telecoil board or Telewand (-08 or -09 rear panel only)

Contrast

Changes the contrast of the LCD display.

RS232

Connects to a computer in order to run a computer program or to upgrade your software.

Printer

Connects the FP35 to an external printer.

Keyboard

This connector has no function (original rear panel only)

Power

Connects the FP35 to its power supply. We recommend that you attach the power supply to the FP35 before plugging it into the wall. For compliance with the IEC 60601-1:2005 electrical safety standard, use only the following power supply: MEPOS model SMDA51-T03

The following symbols can be found on the back and on the bottom of the FP35: Meaning of Symbols

Read the accompanying documents. Please read this manual before operating the FP35. A separate maintenance manual exists for the FP35. If you wish to obtain a maintenance manual please contact Frye Electronics, Inc., or your Frye representative. Reading the accompanying documents in mandatory.

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FONIX FP35 Hearing Aid Analyzer For purposes of safety classification under IEC 60601-1, the FP35 is class 1 equipment, Type B.

0086

This symbol indicates that Frye Electronics conforms to the Medical Device Directive 93/42/EEC.

1.2.4 Sound Chamber Connectors There are three jacks in the bottom part of the sound chamber. The 3.5mm jack is for the internal sound chamber. The larger multi-pronged jack is for the coupler microphone or the M300 microphone set. The small 2.5mm jack is for battery current measurements.

1.3 Accessories 1.3.1 Standard Accessories HA-1 2-cc Coupler Dimensions per requirements of ANSI S3.7 for testing in-the-ear hearing aids

HA-2 2-cc Coupler Dimensions per requirements of ANSI S3.7 for testing ear level, eyeglass and body aids

Ear-Level (BTE) Adapter Snaps into the 1/4 in (6.35 mm) diameter cavity in the HA-2 2-cc coupler. Equipped with a 0.6 in (15 mm) length of 0.076 in (1.93 mm) ID tubing, the adapter allows ANSI S3.22 specified connection of an ear-level aid to the coupler.

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An Overview of the FP35 Touch Coupler Microphone For performing coupler measurements.

Microphone Adapter 14 mm to 1-inch diameter microphone size. Couples the coupler microphone to a calibrator.

Stylus Other Standard Accessories • Standard External Power Supply • Roll of Printer Paper • Operator’s Manual • Fun-Tak • RS232 Cable

1.3.2 Real-Ear Option Accessories Probe Microphone Integrated probe microphone with a 10 ft (3 m) cable for real-ear measurements.

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FONIX FP35 Hearing Aid Analyzer Other Real-Ear Option Accessories: • Probe Calibration Adapter-Provides a means of coupling the probe microphone to a calibrator. • Extension Pole-This extra pole (6 1/2” long), lets you use two different speaker heights when testing in the Real-ear Mode. • Probe Tubes-set of 25 • Felt Pen-Red, Dry-erase • Rectangular reference microphone adapter-Couples the rectangular reference microphone to a calibrator.

1.3.3 Optional accessories Mounting Sleeves For securing microphones to the earhook. Only used for M300 style microphone set. The newer style probe microphone with the integrated earhook does not require these sleeves.

Wedge Style Earhook Holds probe and reference microphones during real-ear testing. Only used for M300 style microphone set. The newer style probe microphone with integrated earhook does not require this part.

Soft Carrying Case An attractive, sturdy, soft carrying case that holds the FP35 and accessories.

An Overview of the FP35 Touch

9 External Monitor Option Used for the external display of the FP35 analyzer. Requires the external monitor option.

Quest QC-10 Sound Level Calibrator For calibration of microphone amplifier; operates at 1000 Hz at a level of 114 dB SPL.

Swing Arm Speaker Gives you a wide range of speakerposition angles and heights to work with when testing in real ear.

Child Size Wedge Style Earhook Holds probe and reference microphones during real-ear testing. Only used for M300 style microphone set. The newer style probe microphone with integrated earhook does not require this part.

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FONIX FP35 Hearing Aid Analyzer Infant Headband Package Used for performing real-ear measurements on infants and small children. Includes infant, child, and adult headbands, six flexible ear hooks, and two sets of “animal ears.”

Single Insert Earphone (RECD) Consists of one ER3A earphone with a phono plug, a 72-inch cable, an assortment of ear tips, a calibration certificate, and a lapel clip. This package is suitable for performing an RECD measurement with the FP35 analyzer. It can also be used for performing audiometric measurements with the Audiometer option.

Dual Insert Earphones Pair of insert earphones with special connector for performing audiometric measurements. Can also be used for RECD measurements.

Dual Insert Earphones Y Cable 3.5 mm stereo phone plug to 1/4” phone jack. Connects dual insert earphone to FP35. Included with the Dual Insert Earphone Option.

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An Overview of the FP35 Touch

Two Microphone System This two microphone setup can be ordered for sound chamber-only FP35 analyzers in order to enable testing with a reference microphone.

Earphone Calibration Adapter Connects the Insert Earphone to the HA-2 coupler. Included with the Audiometer Option.

Open Fit Coupler Non-standard coupler used for realistic testing of open fit hearing aids.

Telewand Allows the measurement of telecoil per ANSI S3.22-1996 and ANSI S3.22-2003. Also allows real-ear telecoil measurements.

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FONIX FP35 Hearing Aid Analyzer Battery Pills Allows the measurement of battery current drain. Sizes: #13, 10, 675, 312, and AA available.

Other Optional accessories • Calibration Clip-Used to couple the old style probe and reference microphones together for calibration purposes. • M311 Coupler Microphone-Used for performing coupler measurements with an external sound chamber. (See section 1.6 for EMC warning regarding this microphone.)

1.4 Optional Features for the FP35 Real-Ear Option You can order the FP35 with the Real-Ear Option so that you can do tests on the hearing aid while it is in the client’s ear. It is then possible to individualize the fitting of a hearing aid-a necessary step since a coupler measurement can seldom tell the operator exactly what sound is received by the client. Many factors affect sound on its way to the eardrum. By measuring with a probe microphone, you will know what is really happening in your client’s ear. External Monitor Option This hardware option allows the connection of the FP35 analyzer to an external monitor. When connected, the FP35 displays on both its internal LCD monitor and the connected external monitor. Although the display is always only in two colors, most standard flat screen and VGA computer monitors can be used. IEC You can add the IEC (International Electrotechnical Commission) test sequence to your FP35 analyzer. This automated sequence lets you test the performance of hearing aids in accordance with the IEC 118-7 standard. Both the 1994 and 2005 versions of the standard are available. JIS An automated test sequence that follows the JIS standard, widely used in Japan. ANSI The ANSI 96 and ANSI 03 automated test sequences are available as an option on your FP35. They provide you with the means to quickly and accurately test a hearing aid in accordance with the ANSI S3.22 standard.

An Overview of the FP35 Touch

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CIC Option This option consists of a 0.4 cc CIC coupler and software correction factors. The CIC correction factors are available in the Coupler Mode by selecting the CIC coupler in the Coupler Menu. Audiometer Option This adds pure-tone air audiometric measurements to your FP35 hearing aid analyzer. You can either take the measurements with insert earphones or with a sound field speaker. See Chapter 7 for more details. ISI An automated test sequence conforming to the Indian ISI IS-10775-1984 standard. Note: The FP35 is fully upgradeable. These options can be added to an existing unit.

1.5 Setup Unpack the instrument and all of the accessories, some of which can be found in a card box. If you ordered the soft carry case as an optional accessory, it will be shipped in a separate box. Keep the shipping box for when you need to send the unit in to us for calibration, upgrade or repair. Choose a location for your FP35 that is relatively free of ambient noise. Begin by plugging in the power supply to the back panel. See Figure 1.2.3 for an illustration of the back panel. Measurements can be considered reliable only when performed with the noise floor of the test environment 10 dB below the input level of the test signal. If you have ordered the Real-ear Option on your FP35, remove the integrated probe microphone from its packing material and plug it into the front of the analyzer after removing the warning sticker covering the mic port. This connection can also be made when the analyzer is powered on, but make sure you press the [RESET] button after plugging in the probe mic cable. The FP35 will power up as soon as you plug the power cord into the wall. To power it down again, either unplug it, or push the [OPERATE] key. Unplugging the FP35 turns it completely off; pushing the [OPERATE] key powers the unit down, but the internal circuit board continues to receive power. For safety reasons, the appliance inlet of the FP35 (the power cord connection to the power supply) should be kept accessible at all times. Once you have power to the unit, you are ready to proceed. Warning: Do not modify this equipment without authorization of the menufacturer.