FONIX® 8000 - Frye Electronics

112 FONIX 8000 Hearing Aid Test System
In order to produce a signal that met with the provisions of the S3.42 standard,
Frye Electronics decided to slightly modify the Composite signal for use in this
ANSI 1992 test sequence. This modified signal is not used in the normal composite
operation of the 8000 test system.
Only the most observant operator will see any significant difference in the hearing
aid performance between the two signals. The ANSI S3.42 signal may result
in an increase in noise gain by about 1 dB.
5.2.2 Entering the ANSI 92 Screen
To enter the ANSI 92 test screen, you must configure one of the function keys
in the Opening screen to point to that test screen.
To configure the F4-F7 keys in the Opening screen:
1. Press [MENU] in the Opening screen.
2. Change one of the F4-F7 selections in the General Default Settings window
under Opening Screen to ANSI S3.42.
3. Use [F8] to save the setting (and all other settings in the Setup Menus) as
default selections. See Sections 2.2.1 and 2.2.4 for details.
4. Press [EXIT] to return to the Opening screen. Your new selection for the
F4-F7 keys should be displayed in the function key list at the bottom of the
screen.
5. Press the function key you selected in Step 2 to enter the ANSI 92 screen.
5.2.3 Running ANSI 92.
1. Level the sound chamber and set up the hearing aid to full on gain as specified
in Section 5.1.2 and 5.1.3.
2. Press [F4] in the Opening screen to enter the ANSI 92 screen.
3. Use [F1] to select the desired ear.
4. Use [F2] to select the settle time used for the test.
5. Use [F3] to set the noise reduction used for the test. See Section 2.3.2.1 for
more information on composite noise reduction.
6. Press [START] to begin the test sequence.
For some aids, the analyzer will pause the test and tell you to turn the aid down
to reference test gain. Adjust the volume of the aid until it comes within 1 dB
of the target gain. Take care not to move the aid from its position. If you must
move it in order to adjust the gain control, replace the aid as close as possible
to its original position. Push [START] to complete the test.
To delete the displayed results, press [F4] and use [, ] to select DELETE ALL
CRVS. Press [] to perform the deletion.