FONIX® 8000 - Frye Electronics
FONIX® 8000 - Frye Electronics
FONIX® 8000 - Frye Electronics
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96 FONIX <strong>8000</strong> Hearing Aid Test System<br />
4.2.2 mA/Freq<br />
The mA/Freq test shows how much battery current the hearing aid drains when<br />
exposed to different frequencies. By default, it runs a 60 dB SPL LONG pure-tone<br />
sweep. The selected amplitude is displayed below the mA/Ampl graph. This<br />
amplitude can be changed by using [, ].<br />
Press [START] to run the test.<br />
A few technical details about this test:<br />
4.2.3 mA/Ampl<br />
• The amplitude used for a test currently being displayed on the screen is<br />
shown above the mA/Freq graph.<br />
• The source type selected with [F3] does NOT affect this test; this test<br />
always uses a pure-tone sweep.<br />
• You can view the numerical data results by entering the local menu by<br />
pressing [MENU] and setting DATA/GRAPH to DATA by using the arrow<br />
keys. Close the local menu by using [EXIT] or [MENU] again. Test results<br />
will now be shown in tabular data format.<br />
• You can turn this test off by toggling the test status with [F5]. If the mA/<br />
Freq graph is not displayed, it will not be measured when [Start] is<br />
pressed.<br />
• Use [F1] to switch between left and right ear. Test results for each ear can<br />
be temporarily stored. (All data is lost when the analyzer is turned off or<br />
when the [RESET] button is pressed.)<br />
The mA/Ampl test shows how much battery current the hearing aid will drain<br />
when exposed to different input level. A test very similar to the I/O measurement<br />
in the ANSI S3.22 test sequence is run. That is, the test begins with a stimulus<br />
being presented at 50 dB SPL. This amplitude increases in 5 dB steps until the<br />
final stimulus at 90 dB SPL is presented. This shows how the battery current<br />
drain varies as the aid is exposed to different amplitudes.<br />
By default, the frequency of the stimulus is 1000 Hz. This can be changed by<br />
using [, ] buttons. The selected frequency is shown in a box below the mA/<br />
Ampl graph. You can also change the source type from Puretone to Composite by<br />
toggling [F3]. The [, ] buttons will not be active when Composite is selected.<br />
Press [START] to run the test.<br />
A few technical details about this test:<br />
• The frequency used for a test currently being displayed on the screen is<br />
shown above the mA/Ampl graph.<br />
• You can view the numerical data results by entering the local menu by<br />
pressing [MENU] and setting DATA/GRAPH to DATA by using the arrow
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