5. Position the reference microphone as close as possible to the micro-
phone of the FM transmitter, but without touching.
6. In the OTOsuite
Test Selector
select the special test
FM Transparency
& Advantage Sequence - HI outside AURICAL HIT
on the
PMM
tab.
7. Close the lid and click the
Sequence
button in the Control Panel to
measure curves 2 and 4.
8. Check the results in the
dB Gain Difference
graphs in the
Feature-2-
Benefit
view.
3.8
Body-worn hearing instruments
This procedure applies to body-worn hearing instruments.
What you need for testing
•
Coupler assembly (coupler cavity and coupler microphone) in Accessory Box
•
Adapter for body-worn hearing instrument
•
Coupler cable between Accessory Box and AURICAL HIT
1. Raise the elevation plate in AURICAL HIT.
2. Place the body-worn device on the elevation plate in the test chamber. If the device
has two or more microphones for directionality, align them along the loudspeaker
axis.
3. Remove the ear mold, if any, from the ear piece and attach the ear piece to the
adapter.
4. Connect the coupler cable from the Accessory Box to AURICAL HIT.
5. Place the ear piece setup in the top position coupler hole of the Accessory Box.
6. Close the lid. You are ready to start testing.
3.9
Testing the hearing instrument with OTOsuite HIT
When you have positioned the hearing instrument, you are ready to start testing.
•
To perform standard hearing instrument testing, see
How to perform a standard test
•
To perform coupler-based fitting, see the AURICAL FreeFit and the Probe Microphone Measurements manual.
3.9.1
How to perform a standard test
With OTOsuite you can perform standard electro-acoustic verification of hearing instruments according to the latest ANSI
and IEC standards. You can also customize the available options and save them as user tests or start-up settings.
The procedure
1. Launch the fitting software for the hearing instrument so that you can control its parameters.
2. Launch OTOsuite and select
HIT
in the
Navigation
panel.
26
Otometrics - AURICAL HIT
3 Testing hearing instruments
