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FONIX FP35 Quick Reference Guide
Setting up a Linear Aid
For ANSI 96, use [F1] to select LINEAR 50 or LINEAR 60. Your selection should
be based upon manufacturer specifications. If the specifications are unavailable,
use:
•
50 dB for aids with high gain and relatively low output.
• 60 dB all other aids.
In ANSI 03, the full-on gain measurement is always taken at 50 dB SPL, so this
selection is not avialable.
Setting up an AGC Aid
Use [F1] to select AGC or ADAPTIVE AGC.
When you run the ANSI sequence on an AGC aid, you may run up to five dif-
ferent input/output curves. The frequencies that you can choose from are 250,
500, 1000, 2000, and 4000 Hz. Choosing AGC or ADAPTIVE AGC with [F1] will
result in additional selections appearing above [F2] and [F3] that let you control
the input/output settings.
Push [F2] to toggle through the frequencies. Use [F3] to turn the input/output
curve for the current frequency on or off.
Press [NEXT] to see the ANSI I/O Screen. If you haven’t yet run an ANSI test,
the I/O curve selection box will show which curves you have selected to test.
3.1.2 Running an ANSI Test
1. Press [START/STOP] to begin the test.
2. Usually the FP35 will pause during the measurement process in order to let
you adjust the gain of the hearing aid to the reference test position.
a. Lift the sound chamber lid and adjust the gain control of the aid until the
MEASURED gain matches TARGET gain.
b. Close the sound chamber lid when finished.
c. The MEASURED gain should be within 1 dB of the TARGET gain.
3. Push [START/STOP] to continue the test. If you are measuring to ANSI 03
and have set the aid type to AGC or ADAPTIVE, the analyzer will pause
again after several measurements have been taken. Adjust the AGC controls
of the aid to have maximum effect (or as specified by the manufacturer) and
press [START/STOP] again to complete the test sequence. The analyzer will
not pause if the ANSI TEST is set to S3.22-1996 or if AGC SWITCHING is
OFF in the local menu. (See Section 4.1.5)
4. Press [NEXT] to view the ANSI 96 I/O Screen for AGC aids.
5. Press [PRINT] for a hard copy of the results.
