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®
FONIX 7000
Hearing Aid Test System
Operator’s Manual
Version 1.51
©2006, Frye Electronics, Inc.
All rights reserved
Oct. 23, 2006
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Contents Chapter 1: Introduction & Setup 1.1 History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Basic Test Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Options . . . . . . . . . . . . . . . . . . . . .
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2.3.1.2 Noise reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2.3.1.3 Delay times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2.3.1.4 Harmonic distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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3.4.2 Running a Test Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 3.4.3 Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 3.4.4 Deleting measurements and settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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5.1.7 Testing Digital Hearing Aids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 5.1.8 Viewing ANSI measurements in the Coupler screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 5.1.9 Explaining the Menu Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 5.2 ANS
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6.4.6 Using Semi-Auto and Fully-Auto Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 6.4.7 Testing with a single tone or three frequency average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 6.4.8 Using the reference microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 6.4.9 Viewing numerical
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Chapter 1 1 Introduction & Setup Welcome to the newest innovation in hearing aid testing! The 7000 Test System is the long-awaited successor to the 6500-CX, the analyzer that arguably has become the standard by which all other hearing aid test equipment is measured. The 7000 Test System has many design improvements, including a high-resolu- tion color display, a flexible and easy-to-use interface, and built-in help screens. Throughout the design process of the 7000 Test System, the engineers
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2 FONIX 7000 Hearing Aid Analyzer were implemented and tested on other Frye instruments. The FP40 analyzer introduced “function buttons” that adapt to handle the specific needs of each test screen and sequence. The FP35 analyzer added help screens and local menus to make the analyzer more intuitive and easier to use. The lessons learned in the FP40 and FP35 analyzers have been incorporated into the 7000 Test System. It is hoped that these improvements will make the 7000 flexible enough to a
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Introduction and Setup 3 with a probe microphone. Using real-ear measurements makes it possible to individualize the fitting of a hearing aid since a coupler measurement can sel- dom tell the operator exactly how what sound is received by the client. Many factors affect the sound on its way to the ear drum. When measuring with a probe microphone, you will know what is happening in the “real-ear.” ANSI Option The ANSI Option gives the user access to the ANSI 03, ANSI 96, ANSI 87, and ANSI 92
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4 FONIX 7000 Hearing Aid Analyzer 1.4 Accessories The following are accessories that are standard and optional on your FONIX 7000 hearing aid analyzer. 1.4.1 Standard Accessories The following accessories come standard with each 7000 test system. Coupler Microphone—M1950E 14 mm pressure-type electret instru- mentation microphone. Note: Older 7000 analyzers may use the M1750E microphone. HA-1 2-cc Coupler Dimensions per ANSI S3.7 for testing in-the-ear aids, canal aids, and aids fit- ted
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Introduction and Setup 5 Microphone Adapter 14 mm to 1" (25.4) mm adapter for coupling the M1950E microphone and reference microphone to a 1-inch device such as a sound level calibra- tor. Test Chamber Cable Connects the main module to the test chamber. Battery Substitution Pills Used to power hearing aids, measure battery drain, and estimate battery life. Standard sizes: 675/76 13 312 10A/230 Other Standard Accessories: Thermal Paper Fun-Tak RS232 Cable Dummy Microphone (for
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6 FONIX 7000 Hearing Aid Analyzer 1.4.2 Real-Ear Accessories When the Real-Ear Option is ordered, the following accessories are included. Remote Module and Microphones The remote module allows the user to control the analyzer while remaining close to the patient. The probe and ref- erence microphones, used for perform- ing real-ear measurements, are plugged into this module. Sound Field Speaker Produces the output for most real-ear measurements. The Real-Ear Option can be ordered with
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Introduction and Setup 7 Monitor Headset Plugs into the remote module, and allows the user to listen to the signal being measured by the probe micro- phone. Model of headset may differ from one shown. Wedge-style Ear Hook Standard Size. Holds probe and refer- ence microphone during real-ear test- ing. Probe Tubes Used for performing real-ear measure- ments. Probe tubes are not reusable.
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8 FONIX 7000 Hearing Aid Analyzer 1.4.3 Optional Accessories Infant/Child Headband Includes infant, child, and adult head- bands, six bendable earhooks, and two sets of “animal ears.” 6-cc Coupler Enables checking the response of stan- dard audiometer headphones. It is designed around the NBS 9A coupler specifications. MZ Couplers MZ-3, MZ-2, and MZ-1 couplers are supplied with the OES Option. CIC Coupler Non-standard (0.4 cc) coupler used for realistic testing of CIC hearing aids.
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Introduction and Setup 9 Open Ear Coupler Non-standard coupler used for realistic testing of open ear hearing aids. #5 battery pill Provides battery current measurements for many CIC hearing aids. Also available: #41 battery pill AA Sound Level Calibrator A portable, self-contained, field-type calibrator for calibrating the microphone amplifier. It operates on one nine-volt transistor battery. Use with 14 mm-to-1" adapter. Calibration is traceable to the U.S. National Institute
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10 FONIX 7000 Hearing Aid Analyzer Sound Chamber Stand A secure, steel-tube stand that improves sound isolation and brings the testing area of the test chamber to convenient table height. Color matches the electronics module. Sound Chamber Spring Damper Factory-installed.or Assembly Kit. This spring assembly fits onto the back of the sound chamber, making it easier to open the sound chamber lid. Once the sound chamber is open past a cer- tain point, the user can release the lid and l
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Introduction and Setup 11 RECD Earphone Package Consists of one ER3A earphone with a 1⁄4 inch plug, a 72 inch cable, an assortment of ear tips, a calibration certificate, and a lapel clip. This pack- age is suitable for performing an RECD measurement with the 7000 Test System. 1.5 Layout, Controls, and Safety This section describes the basic layout of the front and rear panel of the 7000 test system, and special information pertaining to safety regulations. 1.5.1 Front Panel Layout The f
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12 FONIX 7000 Hearing Aid Analyzer • To navigate from screen to screen • To toggle a selection • To pop-up up a selection menu For a more complete description of the operation of the function keys, see Section 2.1.1. [RESET]: Resets the analyzer and returns you to the opening screen. Many settings, measurements, and test conditions are erased or returned to their default conditions with the push of this button. Use [EXIT] instead of [RESET] to avoid the loss of data. [HELP]: Brings up a po
