88 FONIX FP35 Hearing Aid Analyzer
3.9.2 Explaining the Menu Items
This section describes the menu selections available in the Coupler Multicurve
screen. When the USER LEVEL is set to EASY in the Default Settings menu (see
Section 2.3.2 for details), fewer menu items are available. The items starred (*)
below are only available when the USER LEVEL is set to ADVANCED.
The menu system in the Coupler Multicurve screen has been divided into three
different screens: the Main menu, the Advanced menu, and the Custom menu.
Main Coupler Menu
Press [MENU] from the Coupler Screen to enter the Main Coupler menu. Here
are the selections:
EAR—Chosen ear. Choose between LEFT, RIGHT, and NONE. The NONE selec-
tion will not display the ear selection on the screen.
DISPLAY—The type of display used in the Coupler Multicurve and Coupler
Target screens. Choose between GAIN and SPL.
DATA/GRAPH—The type of display. Choose between a graphical display and a
numerical display.
COUPLER TYPE—This setting will only be displayed if you have purchased
either the CIC or the OES options. It turns on the software correction factors
used with special couplers. If you have purchased the CIC Option, a coupler
type of CIC will be possible here. If you have purchased the OES Option, a cou-
pler type of MZ will be possible here. Also available: 2-cc. (Correction factors
are not used with this selection.)
AID GROUP—The type of hearing aid being tested. Select STANDARD, AGC,
or ADAPTIVE (for adaptive AGC circuits). This selection sets the various delay
times used in pure-tone tests so that they are appropriate to the aid’s circuitry.
See Section 2.4 for more information on delay times.
DISTORTION—Type of harmonic distortion measurement during a pure-tone
sweep. See Section 2.5.1.2 for more information.
NOISE RED (COMP)—Amount of noise reduction used for composite curve
measurements. See Section 2.5.2.3 for more information.
NOISE RED (TONE)—Amount of noise reduction used for pure-tone sweeps.
See Section 2.5.1.3 for more information.
REF MIC—Status of reference microphone. See Section 3.8.3 for more informa-
tion.
