Affinity
2.0
Additional Information Page 328
1) Custom defined batteries:
You have the option to create own custom batteries for the testing.
Battery name: To create a new battery, write a name under Battery name.
Voltage: Set the desired voltage for the custom defined battery using the slider (expressed
in mV).
Impedance: Set the desired impedance for the custom defined battery using the slider
(expressed in Ohm).
New/Update: Click New/Update to save the battery. The new custom battery will then be
listed in the Selected battery dropdown list.
Remove: Click Remove to delete a custom battery.
2) Sound File Folder:
If you prefer to use a stimulus not found in the HIT440 stimulus selection you can use other
sound files saved on your PC via the Sound File Folder. Press the button to browse for the
files on the PC. Note that the files need to be in .wav format, have a sample frequency of
44100 Hz, and a resolution of 16 bit. Both mono and stereo files can be used.
3) Warble Adjustment:
Modulation Rate: Select a modulation rate for Warble Tone stimuli (in Hz) using the slider.
Frequency Deviation: Select a frequency deviation for Warble Tone stimuli (in %) using
the slider.
4) Ref and Coupler:
Specify which reference microphone and couplers are used. If using the ones provided
by Interacoustics tick Normal and if using Brüel & Kjær tick B_K type.
5) Test box:
Select the preferred test box:
Internal: This option refers to the Affinity
2.0
built-in testbox.
External: This refers to an external testbox such as TBS25 which can be used with the
Affinity
2.0
and Equinox
2.0
. Note that the external test box needs to include a 3.5 mm stereo
jack.
6) Enviromental Noise
Show warning: Ticking this option will prompt the software to show a warning screen if the
ambient noise in the environment reach a level which can affect the measurement.
7) Outside Limits:
Tick this option to show a warning when curves are outside tolerance limits. This is, however,
only relevant if the professional has setup tolerance limits for the individual tests in the
HIT440.
8) Auto Color:
Auto colour: Tick this option to have the system automatically pick a new colour for each
measured curve.
Show detailed gridlines: Tick this option to have detailed gridlines on the graph as
illustrated below:
9) Launch via IMC server : insert a checkmark in this box to enable the HIT module to be launched
from another module, such as a hearing aid manufacturer’s software
10) Skull Coupler Setup Guide: Remove the checkmark from the checkbox to disable the skull
simulator setup guide
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