Frye FONIX 7000 - Manual (Page 110)

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FONIX 7000 Hearing Aid Analyzer
4.2.2 mA/Freq
The mA/Freq test shows how much battery current the hearing aid drains when
exposed to different frequencies. By default, it runs a 60 dB SPL LONG pure-
tone sweep. The selected amplitude is displayed below the mA/Ampl graph.
This amplitude can be changed by using [∨, ∧].
Press [START] to run the test.
A few technical details about this test:
• The amplitude used for a test currently being displayed on the screen is
shown above the mA/Freq graph.
• The source type selected with [F3] does NOT affect this test; this test
always uses a pure-tone sweep.
• You can view the numerical data results by entering the local menu by
pressing [MENU] and setting DATA/GRAPH to DATA by using the arrow
keys. Close the local menu by using [EXIT] or [MENU] again. Test results
will now be shown in tabular data format.
• You can turn this test off by toggling the test status with [F5]. If the
mA/Freq graph is not displayed, it will not be measured when [Start] is
pressed.
• Use [F1] to switch between left and right ear. Test results for each ear can
be temporarily stored. (All data is lost when the analyzer is turned off or
when the [RESET] button is pressed.)
4.2.3 mA/Ampl
The mA/Ampl test shows how much battery current the hearing aid will drain
when exposed to different input level. A test very similar to the I/O measure-
ment in the ANSI S3.22 test sequence is run. That is, the test begins with a
stimulus being presented at 50 dB SPL. This amplitude increases in 5 dB steps
until the final stimulus at 90 dB SPL is presented. This shows how the battery
current drain varies as the aid is exposed to different amplitudes.
By default, the frequency of the stimulus is 1000 Hz. This can be changed by
using [<, >] buttons. The selected frequency is shown in a box below the mA/
Ampl graph. You can also change the source type from Puretone to Composite
by toggling [F3]. The [<, >] buttons will not be active when Composite is selected.
Press [START] to run the test.
A few technical details about this test:
• The frequency used for a test currently being displayed on the screen is
shown above the mA/Ampl graph.