Frye FONIX FP35 User manual

Quick Reference Guide
©2008 Frye Electronics, Inc. All rights reserved
P/N 010-0021-04
FONIX®FP35

Contents
Chapter 1: Introduction................................................................................1
1.1 Front Panel Layout .....................................................................................1
1.2 Key Operation .........................................................................................2
1.2.1 Navigating through the FP35 screens ............................................................2
1.2.2 Getting help .....................................................................................2
1.2.3 Using the local menus ...........................................................................3
1.3 Default Settings ........................................................................................4
1.4 User Level Mode .......................................................................................6
1.5 Printing ................................................................................................6
Chapter 2: Coupler Multicurve .......................................................................7
2.1 Leveling................................................................................................7
2.2 Frequency Response Measurements...................................................................8
2.2.1 Explaining the signals............................................................................8
2.2.2 Performing a measurement......................................................................9
2.2.3 Testing Digital Aids .............................................................................10
2.2.4 Testing Harmonic Distortion ....................................................................11
2.2.5 Testing Intermodulation Distortion .............................................................12
Chapter 3: Automated Test Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 The ANSI Sequence ...................................................................................15
3.1.1 Setting up for ANSI testing ......................................................................15
3.1.2 Running an ANSI Test ...........................................................................16
3.1.3 Testing Digital Hearing Aids.....................................................................18
3.2 IEC Testing............................................................................................18
3.2.1 Setting Up the Hearing Aid for Testing ..........................................................18
3.2.2 Running an IEC Test ............................................................................19
Chapter 4: Real-Ear Measurements.................................................................21
4.1 Introduction..........................................................................................21
4.1.1 Real-Ear Screens................................................................................21
4.1.2 Navigation ......................................................................................21
4.2 Real-Ear Setup .......................................................................................22
4.2.1 General Setup ..................................................................................22
4.2.2 Internal Speaker Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.3 External Speaker Setup.........................................................................24
4.2.4 Placing the Probe Tube .........................................................................25
4.2.5 Placing the Sound Field Speaker ...............................................................26
4.2.6 Leveling the Sound Field Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3 Audiogram Entry Screen—Creating A Target .........................................................28
4.3.1 Entering the Audiogram Screen.................................................................28
4.3.2 Entering Audiometric Information & Creating A Target..........................................28

iv FONIX FP35 Hearing Aid Analyzer
4.3.3 Creating an NAL-NL1 Target.....................................................................29
4.3.4 Measuring the Real-Ear to Coupler Difference..................................................30
4.3.4.1 Analyzer Setup for RECD ................................................................30
4.3.4.2 Client Setup for RECD ...................................................................31
4.3.4.3 Taking the RECD Measurement..........................................................32
4.4 Insertion Gain Testing ................................................................................32
4.4.1 Measuring the Unaided Response..............................................................34
4.4.2 Measuring the Aided Response ................................................................35
4.4.3 Testing Automatically...........................................................................36
4.4.4 Testing Directional Hearing Aids................................................................36
4.5 Testing in the SPL Screen .............................................................................39
4.5.1 Viewing the SPL Display ........................................................................40
4.5.2 Running an SPL Test ............................................................................40
4.5.3 Testing Automatically...........................................................................41
4.6 Live Speech Testing ...................................................................................42
4.6.1 Using Speech as a Test Signal ...................................................................42
4.6.2 Measuring the occlusion effect..................................................................43
Chapter 5: 2-CC Targets ...............................................................................45
5.1 Target Creation........................................................................................46
5.2 Coupler Target ........................................................................................46
5.3 Coupler EarSim .......................................................................................47
Index ....................................................................................................49

Chapter 1 1
Introduction
Welcome to the FP35 quick reference guide. This manual explains all the major
features of the FP35 analyzer, but is not a comprehensive guide to all of its
functions. If you require further explanation or details, see the FP35 Operator’s
Manual.
1.1 Front Panel Layout
Figure 1.1—Front panel
The following is a short explanation of the basic functions of the keys on the
FP35 front panel.
1. Print: Prints the current screen.
2. Help: Open the help window for the displayed screen.
3. Reset: Resets the analyzer, deleting measurements and returning many set-
tings to their default selections.
4. Operate: Powers the analyzer on and off.
5. Function keys: F1—F5: Perform various functions, depending upon the dis-
played screen.

2FONIX FP35 Quick Reference Guide
6. Menu: Opens the local menu or the default settings menu.
7. Exit: Exits from a screen.
8. Back & Next: Moves to the next measurement screen or through the menu
system.
9. Arrow keys (up, down, right, left): Changes amplitude and frequency selec-
tions when in a measurement screen, and menu selections when in a local
menu.
10. Start/Stop: Starts and stops a measurement.
1.2 Key Operation
This section describes the basic operation of the keys most often used on the
FP35 analyzer. These keys are used to navigate through the different screens
and pull up useful information and settings.
1.2.1 Navigating through the FP-35 screens
Most of the navigation through the FP35’s screens are done with the function
keys, the [NEXT] and [BACK] keys, and the [EXIT] key.
From the Opening screen, the function keys will take you to different measure-
ment screens. For instance, [F3] will take you to one of the Coupler Multicurve
screens, and [F2] will take you to one of the real-ear screens. The function of
each key is displayed on the screen above the key.
The [NEXT] and [BACK] keys are used to take you to related screens. For
instance, if you are in the Audiogram Entry screen, pressing [NEXT] will take
you to the Real-ear SPL screen. [NEXT] and [BACK] are also used for navigating
through the different menu levels.
The [EXIT] key is used to exit from the current screen. Pressing [EXIT] will
never delete any measurements.
The [RESET] key can be used to return to the Opening screen. However, press-
ing [RESET] will delete measurements and reset settings that you may have
changed. Unless this is your intent, it is recommended to use the [EXIT] key
instead of [RESET].
1.2.2 Getting help
Pressing the [HELP] button will open a help window for the currently displayed
screen. For instance, if you are in the Coupler Multicurve screen, pressing
[HELP] will pop up a window containing a short explanation of all the com-
mands available in the Coupler Multicurve screen. See Figure 1.2.2.

1: Introduction 3
Figure 1.2.2—Help Screen
1.2.3 Using the local menus
Pressing the [MENU] button when in a measurement screen will open the local
menu containing selection that pertain to the current screen. For instance, press-
ing [MENU] while in the ANSI 96 screen will open a local menu containing
ANSI 96 selections. See Figure 1.2.3.
Advanced features and fine-tuning selections are often “hidden” away in an
advanced menu reachable using the [NEXT] and [BACK] keys. Look at the title
bar of the local menu to see if the [NEXT] and [BACK] keys are active in the dis-
played local menu.

4FONIX FP35 Quick Reference Guide
Figure 1.2.3—Local Menu
1.3 Default Settings
It’s possible to change the default selections of many of the FP35 analyzer’s set-
tings. For instance, you might want to select Digital Speech as your default real-
ear source type, or have the default source levels of CRV 1-4 be 50, 65, 80, and
90 dB SPL.
Three different sets of default settings can be saved into the FP35 analyzer’s per-
manent memory. This allows you to have different default settings for different
clinicians in your office or for different types of hearing aid technology.
To save a setting configuration:
1. Press [MENU] from the Opening screen. This opens the Default Settings
menu. See Figure 1.3.
2. Use [F2], if desired, to select the desired SETTINGS number you want to
save your settings to. Choose between SETTINGS 1, SETTINGS 2, and
SETTINGS 3.
3. Use the arrow keys to make any changes to the displayed selections. The
up/down arrows move between selections. The right/left arrows change the
selection. Use the [START/STOP] key to jump ahead to the next group of
selections.
4. Press [NEXT] to enter the next Default Settings menu, and repeat the process
of setting up everything just the way you like it.

1: Introduction 5
5. Press [NEXT] to enter the final Default Settings menu. Use the arrow keys to
set up your selections.
6. Press [F5] to store all three menus into the SETTINGS number displayed
above [F2].
To switch to a different saved setting configuration:
• Use[F1]fromtheOpeningscreentoswitchbetweenSETTINGS1,2,&3.
—or—
• Press[MENU]fromtheOpeningscreentoopentheDefaultSettings
menu. Use [F2] to switch between SETTINGS 1, 2, and 3. Press [EXIT] to
return to the Opening screen.
Figure 1.3—Default Settings Menu

6FONIX FP35 Quick Reference Guide
1.4 User Level Mode
The FP35 analyzer has two user levels: EASY and ADVANCED. In Easy Mode,
the measurement screens contain a little less information, but have a cleaner
look. The local menus also contain fewer settings so that the user can focus on
only the most important ones that are used in day to day testing activities. All
of the operations in this Quick Reference Manual assume the user is in EASY
mode, which is the factory default user level.
To change the USER LEVEL:
1. Press [MENU] from the Opening screen to enter the Default Settings menu.
2. Press [NEXT] to go to the Advanced Default Settings menu.
3. Use the [5, 6] keys to select USER LEVEL under General Settings.
4. Use the [4] key to select the setting. Choose between EASY and
ADVANCED.
5. Use [F5] to save the setting, if desired.
1.5 Printing
The FP35 analyzer comes equipped with an internal thermal printer so that
the ability to print a hard copy of your results is always available. The thermal
printer prints a clear, easy-to-read image of the display. You can also hook up
an external printer to print your results on normal office paper. You can use
any external printer that supports HP PCL (Hewlett Packard Printer Computer
Language) version 3.0 and above.
The general operation of the FP35 printer is easy:
• Press[PRINT/FEED]toprintanyscreen.
• Press[PRINT/FEED]againtostopprintinginthemiddleofaprintjob.
This will work even when the screen goes dark.
• Pressandholddownthe[PRINT/FEED]buttontofeedthepaper.
If you are in the middle of a test, and you want to switch between using the
internal and the external printer in the local screen, without changing the
default printer:
1. Press [MENU] from any test screen.
2. Press [NEXT] to enter the Advanced Menu.
3. Select PRINTER with the [6] key.
4. Select either INTERNAL or EXTERNAL with the [4] key.
5. Press [EXIT] to return to the test screen.