Radio Shack Telephone Listener User Manual download pdf (Page 9)

Nucleus Freedom Cochlear

Required Parts:

1. Nucleus Freedom

2. MicroLink Freedom

Note: Mapping change

may be necessary

Select button

Pressed together: Input toggle (between EA, M and T)

Separate short Presses: Sensitivity

Separate long presses: Volume (optional)

MicroLink Freedom

Fitting

1. Remove the Freedom battery rack by pulling it out of the

controller.

2. Insert three 675 batteries designed for use with cochlear

implants into the MicroLink Freedom battery rack.

3. Plug the MicroLink Freedom into the controller.

4. Press the round power button to power up the speech

processor.

5. Use a program that is set to normal signal processing (rather

than beam, auto sensitivity or ADRO)

6. The Freedom processor will automatically detect the presence

of the MicroLink Freedom. The recipient will hear the environ-

ment through the headpiece microphone and the FM com-

bined.

7. Test the patient’s speech recognition in quiet at normal sensi-

tivity with the CI alone and then through the FM system only

(out of range of the headpiece microphone). Performance

should be similar between these two conditions. It is not rec-

ommended to change the FM level of MicroLink Freedom with

the FM Successware.

8. Repeat speech recognition testing in noise. Performance with

the FM should be significantly improved over the implant

only condition. Cochlear recommends using a sensitivity level

of around 12 for normal use. If FM benefit is not documented

in the noise test, it may be necessary to reduce the sensitivity

by pressing the left side of the button. The sensitivity

level will be displayed in the LCD panel with the letter S.

9. A default mixing ratio of 3:1 is used with the Nucleus

Freedom. This reduces the headpiece microphone by 9dB

when the MicroLink Freedom is in use. This ratio can be

adjusted in the implant audiologist's programming software.

In some cases the 2:1 or 1:1 ratios may be preferred for more

normal environmental audibility, or higher ratios up to 10:1

for an "FM only" setting. The headpiece microphone reduction

is maintained when the FM transmitter is switched off and

MicroLink Freedom goes into squelch.

10. When FM is not in use, press both sides of the

increase/decrease button to toggle back to M only. This

will resume normal head piece microphone function. To re-

engage the FM, toggle with the button until "EA" flashes

on the display and the M remains active.

Freedom Listening Check:

1. Attach the Cochlear monitoring phones to the receptacle in

the bottom of the MicroLink Freedom. Turn the system on by

pressing the select button on the Nucleus Freedom. Ensure

that the MicroLink Freedom is plugged into the speech

processor, it has been recognized by the processor (EA), and

normal FM settings are being used.

2. While speaking into the transmitter, listen to the signals from

the headpiece mic and FM system.

Note: The signal quality of the monitoring phones does not

necessarily reflect the sound quality experienced by the

implant user.

Speech Processor

Controller

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Radio Shack Telephone Listener User Manual Page 9

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