FONIX® 8000 - Frye Electronics

32 FONIX 8000 Hearing Aid Test System
DISTORTION: Type of harmonic distortion used in a pure-tone measurement.
Choose between 2nd, 3rd and TOTAL. See Section 2.3.1.3.
COMPOSITE FILTER: Filter used in Composite and Digital Speech measurements.
Choose between ANSI, ICRA and FLAT.
AUTO MODE: Status of Auto Mode in the Coupler Multicurve screen. Choose
between OFF, SEMI-AUTOMATIC and FULLY AUTOMATIC. See Section 3.8 for
more details.
CURVE GROUP LOADED: Choose which curve group to load upon entry into
the Coupler Multicurve screen. See Section 3.8 for details.
F7 and F8: Change the function of the F7 and F8 function keys in the Coupler
Multicurve screen. This allows the user to create a shortcut to commonly used
menu settings. Choose from: DISPLAY, COUPLER, BIAS AMPL, STATIC, BATT
SIZE, AID TYPE, OFF/PREV, DATA/GRAPH. See Section 3.9.
EQUIV NOISE TEST: Status of the equivalent input noise measurement in the
automated test sequences such as ANSI, JIS and IEC. Turns it ON or OFF.
TELECOIL: Status of the telecoil measurement in the ANSI, JIS and IEC automated
test sequences. Turn it ON or OFF.
12 dB DIST: The status of the 12 dB harmonic distortion rule. When measuring
harmonic distortion, if the amplitude of the response at the second harmonic
of the frequency being measured is 12 dB greater than the amplitude of the
primary frequency, the harmonic distortion measurement is ignored at the primary
frequency. Turn this rule ON or OFF in the ANSI and IEC automated test
sequences.
VA CORFIG: Software correction factors designed by the VA to produce a more
realistic response curve than the normal ANSI response curve. This setting
comes with the VA-CORFIG Option.
AGC 250, 500, 1000, 2000 and 4000: Turn ON or OFF the I/O and attack–and–
release measurements at the indicated frequencies in ANSI S3.22-1996, ANSI
S3.22-2003, IEC 60118-7 2005. Other automated test sequences do not offer this
choice. Note that 2000 Hz is always measured in IEC 60118-7:2005 regardless of
the AGC 2000 Hz setting here.
AGC SWITCHING: Status of compression switching during the ANSI S3.22-
2003 and IEC 60118-7 2005 automated test sequences. These standards call for
the hearing aid to be set with a high compression kneepoint during most of the
test sequence, but for the compression kneepoint to be set to minimum (or as
specified by the hearing aid manufacturer) during the I/O and attack and release
measurements. Turning this setting ON allows the compression to be changed
during the test sequence. Turning this setting OFF ignores this requirement and
continues with the test sequence.