FONIX® 8000 - Frye Electronics

102 FONIX 8000 Hearing Aid Test System
at full-on gain in ANSI 87. This will have an effect on nearly all measurement
results in the ANSI test sequence.
• The input/output and attack & release measurements are performed at up
to five different frequencies in ANSI 96. ANSI 87 only measures those
functions at 2000 Hz.
• ANSI 96 measures the telecoil function of all aids using a telecoil device
with a stronger magnetic field than the telecoil device used by ANSI 87,
and a whole frequency sweep of measurements is performed in ANSI 96,
instead of only one measurement at a single frequency in ANSI 87.
Here are the main differences between ANSI 96 and ANSI 03:
• In ANSI 03, the frequency response curve is always measured at 60 dB
SPL. In ANSI 96, AGC aids are tested at 50 dB SPL.
• At the beginning of an ANSI 03 test, AGC aids should be set to have minimum
compression. Just before the I/O and attack and release measurements,
the analyzer will pause to let you turn on the compression controls
to maximum.
• The EIN measurement uses a 50 dB SPL input instead of a 60 dB SPL
input. This should give better results for AGC aids with knee points
between 50 and 60 dB SPL.
• In ANSI 96, full-on gain is measured at 50 or 60 dB SPL for linear aids
and 50 dB SPL for AGC aids. In ANSI 03, full-on gain is always measured
at 50 dB SPL.
• The ANSI 96 Simulated Telephone Sensitivity (STS) measurement is
called Relative Simulated Equivalent Telephone Sensitivity (RSETS) in
ANSI 03.
5.1.1 Entering/Exiting the ANSI S3.22 Screens
By factory default, the [F4] key in the Opening screen will immediately open
the ANSI 03 test screen. You can verify this operation by looking at the label for
[F4] in the Opening screen. However, the [F4] through [F7] keys are user configurable
and may have been changed. If this is the case, or if you want to enter
the ANSI 96 or ANSI 87 test screen, you may have to assign one of these keys to
your desired ANSI test.
To configure the F4-F7 keys:
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 the desired ANSI S3.22 test. You can even assign
one key to one test sequence (such as F4 to ANSI 03) and another key to
another test sequence (such as F5 to ANSI 96).