Download CROS / BiCROS Fitting Guide_Layout 1

Phonak CROS / BiCROS
Fitting Guide
Reminder
1. CROS: Use in this configuration when client has one dead ear and one normal hearing ear.
2. BiCROS: Use in this configuration when client has one dead ear and one ear with aidable hearing loss.
1 Fitting CROS System (example
audiogram opposite):
■
Link up the hearing aids to the Normal side
(Right in this case) and CROS system to the dead
side (Left in this case) on Hi-Pro or NoahLink.
Alternatively iCube can be used.
■ Hit
Connect and follow the on screen prompts.
Ensure that the hearing aid and CROS are on the
correct sides. Click Continue when the opposite
screen is seen.
■ Click “Create new fitting” and continue if this is
a first fit.
Select CROS mode for this case scenario and click
Continue.
Phonak CROS / BiCROS Fitting Guide
■
Match up all the parameters in the Acoustic
parameters screen. As this is a normal hearing ear,
most likely to be slim tubes and open domes being
used. In the case of a CRT product, its most likely
to be a standard receiver and open dome
■
Run the Feedback Test.
■
Do a final save to the hearing aid and database.
CROS Note:
1. The CROS side while connected up to the
software. This only becomes available when
powered up with batteries.
2. The Phonak CROS does not have a start up
jingle. Wearers will either hear the CROS
connected alert or the CROS disconnected alert.
2
Fitting BiCROS System (example
audiogram opposite):
■
Link up the hearing aid to the aidable ears side
(Right in this case) and the CROS system to the
dead ears side (Left in this example) on Hi-Pro or
NoahLink. Alternatively iCube can be used.
■
Hit Connect and follow the on screen prompts.
Ensure that the hearing aid and CROS are on the
correct sides. Click Continue when the opposite
screens are seen.
Phonak CROS / BiCROS Fitting Guide
■
Click “Create new fitting” and continue if this is
a first fit. If the client has already been fitted with
the hearing aid you may choose “use fitting from
hearing instrument”.
■
Ensure BiCROS mode is selected.
■ Match up all the parameters (appropriate to the
hearing loss on the aidable ear) in the Acoustic
parameters screen.
■
Run the Feedback Test.
■
As this is a BiCROS fitting (microphones active
on both sides), the microphones have to be
balanced. This can be done in the Basic Tuning
Screen by selecting CROS/BiCROS Settings as seen
opposite.
■
Click Next Opposite
Phonak CROS / BiCROS Fitting Guide
■
When the opposite screen is seen, the client will
hear a jingle in the hearing aid. Shortly thereafter,
an ascending tone will be heard indicating that the
CROS unit has connected.
■ When the opposite screen is seen, the BiCROS is
active and you can ask you client to make sound
level judgments on sounds originating from the
right versus those from the left. If sounds from
one side feel louder, click adjust.
■ If adjust is clicked, the opposite screen will be
seen. This enables you to balance the two
microphones. Be aware that no audio comes
through at this point. You have to make the
adjustment and then go back to the test.
■
When the clients happy with the balance
between the 2 microphones click “Finish”.
■
Do a final save to the hearing aid and database.
Once all is saved, you can disconnect and power
the devices up with batteries.
■
Once both devices are powered up, the customer
will hear the following confirmation tones if the
CROS unit is connected or disconnect respectively.
Compiled by:
Yatesh Dayaram on behalf of the
Phonak UK Technical Support Team