FONIX® 8000 - Frye Electronics

104 FONIX 8000 Hearing Aid Test System
5. Close the lid of the sound chamber.
6. Press the [LEVEL] button. The sound chamber will level.
7. Exchange the position of the dummy microphone and the test microphone
and plug the battery pill into the battery voltage supply. See Figure 5.1.2B.
Figure 5.1.2B—Setup for aid testing/ equivalent substitution method
5.1.3 Setting up the hearing aid for ANSI
The hearing aid controls must be set to conform with ANSI requirements for
the test results to be valid.
1. Set the controls on the aid (except for the compression controls) to give the
greatest possible output and gain.
2. Set the aid for the widest frequency response range.
3. For ANSI 87 and ANSI 96, set AGC aids to achieve the greatest possible
compression or as otherwise specified by the manufacturer. For ANSI 03, set
AGC aids to have the minimum compression possible or as otherwise specified
by the manufacturer.
4. Put the hearing aid in “test mode,” if applicable. All noise suppression and
feedback cancellation features should be turned off.
5. Set the gain control of the aid to the full-on position.
6. Set the aid up in the sound chamber as described in Section 3.3.
5.1.4 Setting up the analyzer for ANSI
1. Enter the ANSI test screen as described in Section 5.1.1.
2. Use [F1] to select LEFT or RIGHT ear.
3. Use [F2] to select the aid type: LINEAR, AGC or ADAPTIVE AGC. (Press
[F2]. Use [,] to choose the selection. Press [] to complete the selection
and close the pop-up menu.)